CN109239438B - Heating control detection equipment and detection control method for multi-strand insulating self-heating wire - Google Patents

Heating control detection equipment and detection control method for multi-strand insulating self-heating wire Download PDF

Info

Publication number
CN109239438B
CN109239438B CN201811195033.0A CN201811195033A CN109239438B CN 109239438 B CN109239438 B CN 109239438B CN 201811195033 A CN201811195033 A CN 201811195033A CN 109239438 B CN109239438 B CN 109239438B
Authority
CN
China
Prior art keywords
switch
wire
heating
resistance
insulated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201811195033.0A
Other languages
Chinese (zh)
Other versions
CN109239438A (en
Inventor
李碧雄
刘天琪
莫思特
黄婉霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan University
Original Assignee
Sichuan University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sichuan University filed Critical Sichuan University
Priority to CN201811195033.0A priority Critical patent/CN109239438B/en
Publication of CN109239438A publication Critical patent/CN109239438A/en
Application granted granted Critical
Publication of CN109239438B publication Critical patent/CN109239438B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/16—Devices for removing snow or ice from lines or cables

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Resistance Heating (AREA)

Abstract

Heating control detection equipment and detection control method for multi-strand insulating self-heating wires. The multi-strand insulating self-heating wire comprises an outer conductor, a protective metal ring, an insulating heat-conducting ring and an inner heating ring. The outer conductor and the inner heating ring are provided with a plurality of strands. Two ends of the lead are connected to the same phase of transmission line, and heating control detection equipment with the same structure is respectively arranged on the connecting ends. The heating control detection equipment consists of a voltage measurement module, a variable resistance module, a wire connecting end, a switch, a microprocessor and a wireless communication module, and has different control modes according to three different structures of the inner heating ring. The microprocessor receives the control command of the control center through the wireless communication module, transmits the data of the voltage measurement module to the control center, and simultaneously carries out automatic measurement and detection of the lead. The invention precisely controls the current flowing through the internal heating structure and the external conductor, controls the voltage difference of the heating structure, reduces the insulation requirement of the insulating layer, and automatically measures whether the self-heating wire is normal or not.

Description

Heating control detection equipment and detection control method for multi-strand insulating self-heating wire
Field of the art
The invention relates to an anti-icing and deicing technology of an electric power transmission line, in particular to heating control detection equipment and a detection control method of a multi-strand insulating self-heating wire.
(II) background art
With the development of social economy, the requirements on exposed power lines are increasingly higher under the environment of continuously increasing power load application. In cold winter, the lines in many areas can be frozen, so that the lines are damaged. When icing exceeds the tolerance of the line, serious accidents such as broken lines and the like can occur. Therefore, deicing of the electric power transmission line in winter is indispensable and very important. In the prior art, the ice melting technology is continuously improved. Application number CN201610867150.1, "a self-deicing conductor and deicing equipment", discloses an online deicing method for a power transmission line. The method is used for melting ice under the control of the control center, so that the situation that power is required to be cut off when the high-voltage transmission line is melted and serious faults of the line can be avoided, and the existing ice melting technology is greatly improved. Application number CN201810370549.8, self-made heat conductor and heating equipment embedded with insulating heat conducting material and implementation method thereof, discloses another online ice melting method for different types of power transmission lines. The method utilizes the insulating heat-conducting material to replace the heating material, effectively utilizes the heat of the self steel core resistor, and has low cost and good effect. The anti-icing device can melt ice and prevent ice under the control of the control center, can prevent ice and melt ice online when the high-voltage transmission line works, and ensures the safety of electric equipment. However, the above two methods do not give a precise control method of the current. In addition, in the patent disclosed in the application number CN201810370549.8, the inner conductor has only one strand of conductor, and the heat generation may be insufficient. In addition, the voltage difference of the outer conductor of the inner conductor is not well controlled, so that the insulation requirement is high.
(III) summary of the invention
The invention aims at overcoming the defects of the prior art, adopts the increase of the length of the heating wire and the resistance control heating of the heating wire, controls the current of the internal heating structure and the current flowing through the external conductor by controlling the internal heating structure and the resistance, so as to precisely control the heating, control the pressure difference between the external conductor and the internal heating structure and reduce the insulation requirement on an insulating layer. Meanwhile, the acting force of the stranded wire is improved, and the production quality is improved.
The aim of the invention is achieved in that: the multi-strand insulating self-heating wire consists of an outer conductor, a protective metal ring, an insulating heat-conducting ring and an inner heating ring from outside to inside in sequence, wherein two ends of the multi-strand insulating self-heating wire are called an end A and an end B, the end A is provided with a wire connecting end A, the end B is provided with a wire connecting end B, and the wire connecting ends at the two ends are connected to the same phase transmission line at the two ends of the wire; heating control detection equipment of multi-strand insulating self-heating wires with the same structure is respectively arranged at the connecting ends of the two wires.
The outer conductor is metal or alloy, surrounds outside the protection metal ring, and the protection metal ring is the metal ring, surrounds outside insulating heat conduction material, and insulating heat conduction ring comprises insulating heat conduction material, surrounds outside the inboard heating circle, surrounds inboard heating circle periphery completely for inboard heating circle and outer conductor keep apart completely. The inner surface of the insulating heat conducting ring is completely contacted with the outer surface of the inner heating ring, and the outer surface of the insulating heat conducting ring is completely contacted with the inner surface of the protective metal ring.
The inside heating circle has three kinds of structures, adopts any one of them structure, and three kinds of structures are respectively: an uninsulated wire structure, an insulated wire structure, and an insulated fiber optic tube structure; the non-insulated wire is a wire which is not added with insulating materials on the outer side of the wire; the insulated wire is a wire with an insulating material layer at the outer side of the wire, the insulating material layer is an insulating heat conducting material, and the wire is made of a metal material with larger resistivity and larger stress; the insulating optical fiber tube is an optical fiber metal tube with an insulating material layer on the outer side, and the insulating material layer is an insulating heat-conducting material.
The heating ring at the inner side of the non-insulated wire structure is composed of one or more strands of non-insulated wires; when the insulating wire is formed by a plurality of non-insulating wires, the non-insulating wires are mutually short-circuited, and the non-insulating wires are made of metal materials with larger resistivity and larger stress.
The heating ring at the inner side of the insulated wire structure is composed of a plurality of insulated wires.
The inner side heating ring of the insulating optical fiber tube structure consists of a plurality of insulating wires and a plurality of insulating optical fiber tubes.
The heating control detection equipment of the multi-strand insulating self-heating wire is identical in structure and control mode and symmetrically arranged on the wire connecting end A and the wire connecting end B, and the heating control detection equipment of the multi-strand insulating self-heating wire is of two different structures according to the difference of the inner heating ring structures:
When the inner heating ring is of a non-insulated wire structure, the inner heating ring control systems of the end A and the end B are respectively composed of a voltage measurement module, a variable resistance module, a wire connecting end, two switches, a microprocessor and a wireless communication module; the voltage measuring module measures the voltage between the outer conductor and the inner heating ring, and when the resistance of the variable resistance module is not 0, the voltage between the outer conductor and the inner heating ring has an analytic relationship with the resistance of the variable resistance module. The variable resistance module is connected between the outer conductor and the inner heating ring and used for generating controllable resistance between the outer conductor and the inner heating ring; the two switches and the variable resistance module are connected to the microprocessor and are controlled by the microprocessor; the microprocessor is connected with the wireless communication module, receives the control command of the control center through the wireless communication module, and transmits the data measured by the voltage measurement module to the control center.
When the inner side heating ring is of an insulated wire structure or an insulated optical fiber tube structure, the heating control detection equipment of the multi-strand insulated self-heating wires of the same structure consists of a voltage measurement module, a variable resistance module, a wire connecting end, a plurality of switches, a microprocessor and a wireless communication module.
When the inner heating ring is of an insulated wire structure or an insulated optical fiber tube structure, the inner heating ring is provided with 4k+1 insulated wires with the same section in total, and the resistance of each insulated wire is the same and is RN; one of the insulated wires is connected with the wire connecting end A through the switch 1B and is connected with the wire connecting end B through the switch 2B, and the insulated wire is called a parallel insulated wire; in addition, 4k wires are divided into two groups, each group is 2k wires, each group of 2k wires are connected in series to form a resistor of 2kRN times, and the wires formed in the connection mode are called as insulating resistance wires of 2k times; two ends of one group of 2k times of insulating resistance wires are connected to the parallel insulating wires and the outer conductors at the wire connecting end A, and two ends of the other group of 2k times of insulating resistance wires are connected to the parallel insulating wires and the outer conductors at the wire connecting end B, so that two 2k times of insulating resistance wires are connected in series with the outer conductors and then connected in parallel with the parallel insulating wires; one end of the 2k times insulated resistance wire connected to the parallel insulated wire and the outer conductor is referred to as a 2k times insulated resistance wire series end, and the other end is referred to as a 2k times insulated resistance wire terminal.
The voltage measurement module is used for measuring the voltage between the outer conductor and the parallel insulated wire, and when the resistance of the variable resistance module is not 0, the voltage between the outer conductor and the parallel insulated wire of the wire has an analytic relationship with the resistance of the variable resistance module; the variable resistance module is connected between the outer conductor and the parallel insulated wire for generating resistance between the outer conductor and the parallel insulated wire.
Each switch and the variable resistance module are connected to the microprocessor and are controlled by the microprocessor; the microprocessor is connected with the wireless communication module, receives the control command of the control center through the wireless communication module, and transmits the data of the voltage measurement module to the control center.
When the inner heating ring is of an uninsulated wire structure, the inner heating ring control system of the end A and the end B comprises:
switch 1a and switch 2a are simultaneously shorted or simultaneously opened, and switch 1b and switch 2b are simultaneously shorted or simultaneously opened; when the switch 1a is short-circuited with the switch 2a, the switch 1b is open-circuited with the switch 2 b; when the switch 1a and the switch 2a are opened, the switch 1b and the switch 2b are short-circuited; when the switch 1a and the switch 2a are short-circuited, the outer conductor is short-circuited with the wire connecting ends at the two ends; when the switch 1b is short-circuited with the switch 2b, the inner heating ring is short-circuited with the wire connection ends of both ends.
When the inner heating ring is of an insulated wire structure or an insulated optical fiber tube structure, in the inner heating ring control system of the end A and the end B:
switch 1a is shorted or opened simultaneously with switch 2a, and switch 1b is shorted or opened simultaneously with switch 2 b. When the switch 1a is short-circuited with the switch 2a, the switch 1b is open-circuited with the switch 2 b; when the switch 1a and the switch 2a are opened, the switch 1b and the switch 2b are short-circuited; when the switch 1a and the switch 2a are short-circuited, the outer conductor is short-circuited with the wire connecting ends at the two ends; when the switch 1b is short-circuited with the switch 2b, the parallel insulated wire is short-circuited with the wire connection ends of both ends.
When the inner side heating ring of the multi-strand self-heating wire is of an insulating structure or an insulating optical fiber structure, the multi-strand self-heating wire sequentially comprises an outer conductor, a protective metal ring and the inner side heating ring from outside to inside.
When the inner side heating ring is of an insulating wire structure or an insulating optical fiber tube structure, 4k+1 insulated conductors with the same section in the inner side heating ring control system of the same structure are respectively of RN, and the resistances of the 4k+1 insulated conductors with the same section are divided into two groups of 2k times insulated resistance wires, wherein the connection relation between each group of 2k times insulated resistance wires and each switch is as follows: for a 2k times insulated resistance wire connected to the outer conductor and parallel insulated wire at the a-terminal, let switch ANk-1 be the switch closest to the outer conductor at the a-terminal, switch AN1 be the switch furthest from the outer conductor at the a-terminal; the switches AN1, AN, … …, ANk-1 are connected to the connection point of the a ends of the adjacent two wires and the a ends of the parallel insulated wires in sequence.
When switch ANk-1 is open; ANk-2 to AN1 switches short circuit, and the resistance value of the insulating resistance wire is 2RN which is 2k times of the resistance value of the insulating resistance wire;
when the switches ANk-1, ANk-2 are open; ANk-3 to AN1 switches short circuit, and the resistance value of the insulating resistance wire is 4RN, wherein the resistance value is 2k times;
……
when the switches ANk-1, ANk-2, …, AN3 open AN2 to AN1 switch short circuit, the 2k times the insulation resistance wire resistance value is 2 (k-2) RN;
When the switches ANk-1, ANk-2, …, AN3, AN2 are open and AN1 is short-circuited, the resistance value of the insulation resistance wire is 2 (k-1) RN which is 2k times;
when the switches ANk-1, ANk-2, … and AN1 are open, the resistance of the 2k times the insulation resistance wire is 2kRN.
The connection mode of the 2k times insulated resistance wire and the switch at the end B and the end A is similar.
When the inner side heating ring is of an insulating wire structure or an insulating optical fiber wire, the inner side heating ring is provided with 13 insulated wires with the same cross section of 4k+1, the parallel insulated wires are 13 wires, and the connection between each wire and the switch is as follows:
the lead 1 is in short circuit connection with the outer conductor at the end B; the end A is connected with a No. 2 lead in a short circuit way;
the wire No. 2 is in short circuit connection with the wire No. 3 at the end B; the end A is connected with a No. 1 lead in a short circuit manner;
the wire 3 is in short circuit connection with the wire 2 at the end B; the end A is in short circuit connection with a No. 4 lead;
the wire No. 4 is in short circuit connection with the wire No. 5 at the end B; the end A is in short circuit connection with a wire No. 3;
the wire No. 5 is in short circuit connection with the wire No. 4 at the end B; the end A is connected with a No. 6 lead in a short circuit way;
the wire No. 6 is in short circuit connection with the wire No. 13 at the end B; the end A is in short circuit connection with a No. 5 wire;
the wire 7 is in short circuit connection with the wire 8 at the end B; the end A is in short circuit connection with the outer conductor;
The wire No. 8 is in short circuit connection with the wire No. 7 at the end B; the end A is connected with a No. 9 lead in a short circuit manner;
the wire No. 9 is in short circuit connection with the wire No. 10 at the end B; the end A is connected with a No. 8 lead in a short circuit manner;
the wire 10 is in short circuit connection with the wire 9 at the end B; the end A is in short circuit connection with the No. 11 wire;
the wire 11 is in short circuit connection with the wire 12 at the end B; the end A is in short circuit connection with a No. 10 wire;
the wire No. 12 is in short circuit connection with the wire No. 11 at the end B; the end A is connected with a No. 13 lead in a short circuit manner;
one end of the switch A1 is connected to the A end of the No. 5 wire and the A end of the No. 6 wire in a short circuit way, and the other end of the switch A1 is connected to the A end of the outer conductor;
one end of the switch A2 is connected to the A end of the No. 3 wire and the A end of the No. 4 wire in a short circuit way, and the other end of the switch A2 is connected to the A end of the outer conductor:
one end of the switch A3 is connected to the A end of the No. 1 wire and the A end of the No. 2 wire in a short circuit way, and the other end of the switch A3 is connected to the A end of the outer conductor;
one end of the switch AW2 is connected to the A end of the No. 8 wire and the A end of the No. 9 wire in a short circuit way, and the other end of the switch AW2 is connected to the A end of the outer conductor; one end of the switch AW1 is connected to the A end of the No. 10 wire and the A end of the No. 11 wire in a short circuit way, and the other end of the switch AW1 is connected to the A end of the outer conductor; one end of the switch AN2 is connected to the A end of the No. 8 wire and the A end of the No. 9 wire in a short circuit way, and the other end of the switch AN2 is connected to the A end of the No. 13 wire;
one end of the switch AN1 is connected to the A end of the No. 10 wire and the A end of the No. 11 wire in a short circuit way, and the other end of the switch AN1 is connected to the A end of the No. 13 wire;
One end of the switch B1 is connected to the B ends of the 11 # wire and the 12 # wire in a short circuit way, and the other end of the switch B1 is connected to the B end of the outer conductor;
one end of the switch B2 is connected to the B ends of the No. 9 wire and the No. 10 wire in a short circuit way, and the other end of the switch B2 is connected to the B end of the outer conductor;
one end of the switch B3 is connected to the B ends of the wire 7 and the wire 8 in a short circuit way, and the other end of the switch B3 is connected to the B end of the outer conductor;
one end of the switch BW1 is connected to the B end of the No. 4 wire and the B end of the No. 5 wire in a short circuit way, and the other end of the switch BW1 is connected to the B end of the outer conductor;
one end of the switch BW2 is connected to the B end of the No. 2 wire and the B end of the No. 3 wire in a short circuit way, and the other end of the switch BW2 is connected to the B end of the outer conductor;
one end of the switch BN1 is connected to the B end of the No. 4 wire and the B end of the No. 5 wire in a short circuit way, and the other end of the switch BN1 is connected to the B end of the No. 13 wire;
one end of the switch BN2 is connected to the B end of the No. 2 wire and the B end of the No. 3 wire in a short circuit way, and the other end of the switch BN2 is connected to the B end of the No. 13 wire;
the switch A1, the switch A2, the switch A3, the switch AW1, the switch AW2, the switch AN1, the switch AN2, the switch B1, the switch B2, the switch B3, the switch BW1, the switch BW2, the switch BN1 and the switch BN2 are all connected with the microprocessors at the same end and are controlled by the microprocessors at the same end.
When the inner side heating ring is of a non-insulated conductor structure, 7 strands of non-insulated steel wires are adopted as the non-insulated conductor; when the inner heating ring is of an insulating optical fiber structure, the insulating optical fiber structure consists of 9 insulating wires and 3 insulating light tubes.
The heating control detection equipment variable resistance module comprises a variable resistance module A end, a variable resistance module B end, a short circuit resistor, a binary resistor, a quarter resistor, an eighth resistor, a single resistor, a double resistor, a quadruple resistor, an eighth resistor and a sixteen resistor; a short-circuit switch, a two-way switch, a four-way switch, an eight-way switch, a single-way switch, a two-way switch, a four-way switch, an eight-way switch and a sixteen-way switch. One end of the short-circuit resistor is connected with the short-circuit switch, and the other end of the short-circuit resistor is connected to the end A of the variable resistor module; one end of the bipartite resistor is connected with the bipartite switch, and the other end of the bipartite resistor is connected to the end A of the variable resistor module; one end of the quarter resistor is connected with the quarter switch, and the other end of the quarter resistor is connected to the end A of the variable resistor module. One end of the eighth resistor is connected with the eighth switch, and the other end of the eighth resistor is connected to the end A of the variable resistor module; one end of the single resistor is connected with the single switch, and the other end of the single resistor is connected with the end A of the variable resistor module; one end of the double resistor is connected with the double switch, and the other end of the double resistor is connected with the end A of the variable resistor module; one end of the quadruple resistor is connected with the quadruple switch, and the other end of the quadruple resistor is connected to the end A of the variable resistor module; one end of the eight-time resistor is connected with the eight-time switch, and the other end of the eight-time resistor is connected to the end A of the variable resistor module; one end of the sixteen-time resistor is connected with the sixteen-time switch, and the other end of the sixteen-time resistor is connected to the end A of the variable resistor module.
One end of the short-circuit switch is connected with the short-circuit resistor, and the other end of the short-circuit switch is connected with the end B of the variable resistor module; one end of the binary switch is connected with the binary resistor, and the other end is connected with the B end of the variable resistor module; one end of the fourth switch is connected with the quarter resistor, and the other end is connected with the B end of the variable resistor module; one end of the eighth switch is connected with the eighth resistor, and the other end is connected with the B end of the variable resistor module; one end of the single-time switch is connected with the single-time resistor, and the other end of the single-time switch is connected with the B end of the variable resistor module; one end of the double switch is connected with the double resistor, and the other end of the double switch is connected with the B end of the variable resistor module; one end of the quadruple switch is connected with the quadruple resistor, and the other end of the quadruple switch is connected with the B end of the variable resistor module; one end of the eight-time switch is connected with the eight-time resistor, and the other end of the eight-time switch is connected with the B end of the variable resistor module; one end of the sixteen-time switch is connected with sixteen-time resistor, and the other end of the sixteen-time switch is connected with the end B of the variable resistor module.
When the heating equipment is short-circuited by the switches, the resistance value of the variable resistance module is the resistance value connected by each short-circuit switch in parallel; when all switches are open, the variable resistance module resistance value is infinite.
When the inner heating ring is of an insulating structure or an insulating optical fiber structure, the resistance of each insulating wire is RN, and in the variable resistance module: the short-circuit resistance is represented by R0; the bipartite resistor is denoted by RF 2; the quarter resistors are denoted by RF 4; the eighth resistor is denoted by RF 8; the single-time resistance is represented by RB 1; the double resistance is represented by RB 2; the quadruple resistance is represented by RB 4; the eight times resistance is represented by RB 8; sixteen times the resistance is represented by RB 16:
RB1＝RN；
R0＝0；RF2＝0.5RB1；RF4＝0.25RB1；RF8＝0.125RB1；
RB2＝2RB1；RB4＝4RB1；RB8＝8RB1；RB16＝16RB1；
When the inner heating ring is of an uninsulated wire structure, if the resistances at the a end and the B end of the inner heating ring are Rab, rb1=rab.
The automatic measurement and detection method comprises the steps of shunt control, heating state power control and calculation and automatic detection of the self-heating wire state; different measurement detection and control are respectively carried out according to different structures of the inner heating ring:
automatic measurement detection and control of heating control detection equipment when the inner heating ring is of an uninsulated wire structure:
the shunt control method comprises the following steps:
normal power transmission:
the switch 1a and the switch 2a are short-circuited, the switch 1b and the switch 2b are open-circuited, and the resistance of the variable resistance module is 0;
heating state power control and calculation:
the switch 1a and the switch 2a are opened, and the switch 1b and the switch 2b are short-circuited; let the resistances of the A end and the B end of the inner heating ring be Rab, and the resistance of the variable resistance module be R out ,
Assuming that the current flowing through the power transmission line is I, the current In the inner heating ring is:
heating power W of inner heating ring:
automatic detection and control of the state of the insulated self-heating wire:
the switches 1a and 2a are opened, the switches 1B and 2B are short-circuited, the resistance values of the end A and the end B of the variable resistor are Rout, and rout=0.5 Rab;
when the voltage measurement module measures that the voltage is equal to 0.25Rab multiplied by I, the self-heating wire is considered to be normal, otherwise, the self-heating wire is considered to be abnormal;
The inner heating ring is of an insulated wire structure, and automatic measurement detection and control of heating equipment are performed when the number of the insulated wires is 1+4k=13:
normal power transmission:
the switches 1a and 2a are short-circuited, the switches 1b and 2b are open-circuited, the resistance of the variable resistance module is 0,
switch A1, switch A2, switch A3, switch B1, switch B2, switch B3, switch AW1, switch AW2, switch BW1, switch BW2 are shorted; switch AN1, switch AN2, switch BN1, switch BN2 open;
heating state power control and calculation:
the switch 1a and the switch 2a are opened, the switch 1B and the switch 2B are short-circuited, and the resistance values of the end A and the end B of the variable resistance module are Rout;
switch A1, switch A2, switch A3, switch B1, switch B2, switch B3, switch AW1, switch AW2, switch BW1, switch BW2 are open;
(1) Switch AN1, switch AN2, switch BN1, switch BN2 open
Is provided withR p Representing parallel resistors at two ends
If the current flowing through the transmission line is I, the current I of the No. 13 wire n The method comprises the following steps:
heating power W of inner heating ring:
(2) Switch AN1, switch BN1 is shorted; switch AN2, switch BN2 open;
is provided with
Assuming that the current flowing through the transmission line is I, the current In at the wire No. 13 is:
heating power W of inner heating ring:
switch AN1, switch AN2, switch BN1, switch BN2 are shorted;
Is provided with
Assuming that the current flowing through the transmission line is I, the current In at the wire No. 13 is:
heating power W of inner heating ring:
automatic detection of self-heating wire state:
the switch 1a and the switch 2a are opened, the switch 1b and the switch 2b are short-circuited, and the resistance of the variable resistance module is infinite;
switch A1, switch A2, switch A3, switch B1, switch B2, switch B3, switch AW1, switch AW2, switch BW1, switch BW2 are open; switch AN1, switch AN2, switch BN1, switch BN2 open when the voltage measurement module measures voltage equal toAnd when the self-heating wire is in the normal state, the self-heating wire is considered to be abnormal.
The invention has the positive effects that:
1. the invention controls heating by increasing the length of the heating wire and the resistance of the heating wire, controls the current flowing through the internal heating structure and controls the resistance, and further precisely controls the current flowing through the internal heating structure and the current flowing through the external conductor.
2. And the pressure difference between the outer conductor and the internal heating structure is controlled, so that the insulation requirement of the insulating layer is reduced.
3. And the heating value of the wire is increased, so that the anti-icing and ice-melting are simpler.
4. The multi-strand self-heating wire is manufactured, and meanwhile, the inner structure protection ring is arranged, so that in the production process, the stranded wires can bear larger acting force when being wrapped, the damage of the insulating layer is reduced, and the quality of the power transmission wire can be improved.
5. And automatically measuring whether the self-heating wire is normal.
(IV) description of the drawings
Fig. 1 is a schematic view of the self-made heat conductive wire outer shape structure of the present invention.
Fig. 2 is a cross-section of a self-made thermally conductive wire structure.
Fig. 3 is a schematic diagram of a 7-strand uninsulated wire structure.
Fig. 4 is a schematic view of an insulated wire with a steel wire.
FIG. 5 is a schematic view of a fiber optic metal tube with an insulating material layer on the outside.
Fig. 6 shows an inner heating coil with 13 insulated wire structures.
Fig. 7 shows an inner heating ring of an insulated optical fiber structure using 9 insulated wires and 3 insulated optical wires.
Fig. 8 is a schematic view of the outer conductor structure of a layer of metal strands.
Fig. 9 is a schematic view of the outer conductor structure of the two-layer metal stranded wire.
FIG. 10 is a schematic diagram of a heating control detecting device of a heating ring on the inner side of a non-insulating structure.
Fig. 11 is a schematic diagram showing connection between parallel insulated wires and wire connection ends of a heating control detection device of a heating ring inside an insulating structure.
FIG. 12 is a schematic view of a portion of the heating coil control system inside the insulating structure.
Fig. 13 is a schematic diagram of an insulation structure inner heating coil control system composed of 13 insulated wires.
Fig. 14 is a schematic diagram of a variable resistance module structure.
Fig. 15 is a schematic circuit diagram of a microprocessor structure.
Fig. 16 is a schematic diagram of the microprocessor RS232 interface.
Fig. 17 is a circuit diagram of a five volt to three volt power conversion.
Fig. 18 is a circuit diagram of a three volt to two volt power conversion.
Fig. 19 is a JTAG circuit diagram.
Fig. 20 is a schematic diagram of a switching circuit.
Fig. 21 is a block diagram of a control center.
In the figure, 1 outer conductor, 2 protective metal ring, 3 insulating heat conducting ring, 4 inner heating ring, 5-1 to 5-7 non-insulating conductor, 6 conductor insulating layer, 7 conductor layer, 8 optical fiber tube insulating layer, 9 metal tube, 10-1 to 10-4 optical fiber, 11-B1 to 11-B9 insulating conductor, 2-1 to 12-3 insulating optical fiber tube, 13-A1 to 13-AN conductive metal wire 13-B to 13-bm conductive metal wire, 11-n1 to 11-n13 insulating conductor, 14 conductor connection end A,15 conductor connection end B,16 switch 1a,17 switch 1B,18 switch 2a,19 switch 2B,20-1, 20-2, 20-3 variable resistance module, 21-1, 21-2 voltage measurement module, 22-1 to 22-2 microprocessor, 23-3 wireless communication module, 24 switch A3, 25 switch A2, 26 switch A1, 27 switch AW2, 28 switch AW1, 29 switch AN2, 30 switch AN1, 31 switch B1, 32 switch B2, 33 switch B3, 34 switch BW2, 35 switch BW1, 36 switch BN2, 37 switch BN1, 38 variable resistor A terminal, 39 variable resistor B terminal, 40 shorting resistor, 41 bisecting resistor, 42 quarter resistor, 43 eighth resistor, 44 single-time resistor, 45 double-time resistor, 46 quadrupling resistor, 47 eighth resistor, 48 sixteen times resistor, 49 shorting switch, 50 double-time switch, 51 quarter switch, 52 eighth switch, 53 single-time switch, 54 double-time switch, 55 quadruple switch, 56 eighth switch, 57 sixteen times switch, 58 control server, 60 parallel insulated conductors, 61-1 conductor connection A2 k times insulated resistor conductor, 61-2 conductor connection B2 k times insulated resistor conductor, u11 is MSP430F5438 is a singlechip, UP18 is LM26400Y is a power supply conversion chip.
(fifth) detailed description of the invention
The multi-strand insulating self-heating wire sequentially comprises an outer conductor 1, a protective metal ring 2, an insulating heat conducting ring 3 and an inner heating ring 4 from outside to inside, wherein two ends of the multi-strand insulating self-heating wire are called an end A and an end B, the end A is provided with a wire connecting end A14, the end B is provided with a wire connecting end B15, and the wire connecting end A is arranged at the end A of the self-heating wire; the wire connecting end B is arranged at the self-heating wire B end. The wire connecting ends at the two ends are connected to the same-phase transmission lines at the two ends; and the two wire connecting ends are respectively provided with a control system with the same structure to control the transmission, heating and self-checking of the wires.
See fig. 1 and 2.
When the inner side heating ring 4 of the multi-strand self-heating wire is of an insulating structure or an insulating optical fiber structure, the multi-strand self-heating wire sequentially comprises an outer conductor 1, a protective metal ring 2 and the inner side heating ring 4 from outside to inside.
The outer conductor 1 is metal or alloy, surrounds outside the protection metal ring, and is a metal stranded wire or alloy stranded wire. The stranded wire comprises one or more metal tubes with optical fibers embedded therein. The examples use aluminum.
The protective metal ring 2 is a metal ring and surrounds the outer side of the insulating heat conducting material 3, and aluminum is adopted in the embodiment. When the insulating heat conducting ring exists, the inner surface of the protective metal ring is completely contacted with the outer surface of the insulating heat conducting material; when the insulating heat conducting ring is not arranged, the inner surface of the protective metal ring is completely contacted with the outer surface of the inner heating ring. Protection of the metal ring: when the outer conductor is a metal stranded wire, in the production process, the metal stranded wire is enabled to have uniform pressure on the insulating heat conducting ring and the inner side heating ring, and the insulating heat conducting ring and the inner side heating ring are prevented from being damaged due to nonuniform pressure.
The insulating heat conducting ring 3 is made of insulating heat conducting material, surrounds the outer side of the inner heating ring 4, and completely surrounds the outer periphery of the inner heating ring, so that the inner heating ring 4 is completely isolated from the outer conductor 1. The inner surface of the insulating heat conducting ring 3 is completely contacted with the outer surface of the inner heating ring 4, and the outer surface of the inner heating ring 4 is completely contacted with the inner surface of the protective metal ring 3. When the inner heating ring is of an uninsulated wire structure, an insulated heat conducting ring 3 is necessary. The heat conducting material of the insulating heat conducting ring in the embodiment is selected from heat conducting insulating materials produced by aviation nano technology development limited company in combined fertilizer: model: ZH-HCM-A.
For the transmission wire, the metal conductor of the inner heating ring is designed according to the regulations of the national standard aluminum stranded wire and the steel-cored aluminum stranded wire (GB 1179) of the people's republic of China, or the innermost steel core of the steel-cored aluminum stranded wire, or the doped steel core material with higher resistivity and higher strength than the steel core. The outer conductor is an aluminum stranded wire designed according to the national standard of the people's republic of China and the regulation of a steel-cored aluminum stranded wire (GB 1179), or an aluminum stranded wire at the outer layer of the steel-cored aluminum stranded wire, or other wires with lower resistivity than the aluminum stranded wire.
The inner side heating ring 4 has three structures, and any one of the structures is adopted, and the three structures are respectively: non-insulated wire structure, insulated fiber tube structure.
The non-insulated wire is a wire which is not added with insulating materials on the outer side of the wire; refers to an inner side heating ring formed by one or more strands of non-insulated wires; when formed of a plurality of uninsulated wires, the uninsulated wires are shorted to each other. The uninsulated wire is made of a material having a relatively high resistivity. This example uses a 7-strand steel wire structure. Referring to fig. 3, 5-1,5-2,5-3,5-4,5-5,5-6,5-7 are non-insulated conductors.
See fig. 4. The insulated wire is a wire with an insulated material layer at the outer side of the wire, the insulated material layer is made of an insulated heat-conducting material, and the wire is made of a material with higher resistivity. The wire is made of a material with higher resistivity, and in the embodiment, the wire is made of steel wires. In fig. 4, 6 is a conductive line insulating layer, and 7 is a conductive line layer.
See fig. 6. The heating ring at the inner side of the insulated wire structure is composed of 13 insulated wires, and the 11-a1, 11-a2, … … and 11-a13 insulated wires are distributed in the insulated heat conducting ring 3.
See fig. 5. The insulating optical fiber tube is an optical fiber metal tube with an insulating material layer on the outer side, and the insulating material layer is an insulating heat-conducting material. In the figure, 8 is an optical fiber tube insulating layer, 9 is a metal tube, and 10-1, 10-2, 10-3 and 10-4 are optical fiber tubes.
See fig. 7. The inner side heating ring of the insulated optical fiber tube structure consists of 9 insulated wires 11-b1, 11-b2, … …, 11-b9 and 3 insulated optical fiber tubes 12-1, 12-2 and 12-3. The optical fibers in the insulated fiber optic tube are used for communications.
See fig. 8, 9. The outer conductor is a conductive metal ring or is formed by a conductive metal wire. When the conductive metal wires are formed, the conductive metal wires are a plurality of conductive metal wires, and are one layer or a plurality of layers. The conductive metal line is made of a material with lower resistivity, and aluminum is adopted in the embodiment. 13-a1, 13-a2, 13-a3, … …, 13-an-1, 13-an are conductive metal lines when one layer is formed. 13-b1, 13-b2, 13-b3, … …, 13-bm-1, 13-bm are conductive metal lines when two layers are used.
The inner heating ring control systems arranged on the two wire connecting ends have the same structure and the same control mode, are symmetrically arranged on the wire connecting end A14 and the wire connecting end B15, and have two different structures according to the different structures of the inner heating ring 4.
See fig. 10. When the inner heating ring is of an uninsulated wire structure, the control system structures of the wire connecting end A14 and the wire connecting end B15 are the same, and the control system on the wire connecting end A consists of a voltage measuring module 21-1, a variable resistance module 20-1, the wire connecting end A14, two switch switches 1a 16 and 1B 17, a microprocessor 22-1 and a wireless communication module 23-1. The control system controls the power transmission, heating and self-checking of the lead. The voltage measurement module measures the voltage between the outer conductor and the inner heating ring, and when the resistance of the variable resistance module is not 0, the voltage between the outer conductor and the inner heating ring has an analytic relationship with the resistance of the variable resistance module; the variable resistance module is connected between the outer conductor and the inner heating ring and is used for generating resistance between the outer conductor and the inner heating ring; the two switches and the variable resistance module are connected to the microprocessor and are controlled by the microprocessor; the microprocessor is connected with the wireless communication module, receives the control command of the control center through the wireless communication module, and transmits the data of the voltage measurement module to the control center.
Switch 1a is shorted or opened simultaneously with switch 2a, and switch 1b is shorted or opened simultaneously with switch 2 b. When the switch 1a is short-circuited with the switch 2a, the switch 1b is open-circuited with the switch 2 b; when the switch 1a and the switch 2a are opened, the switch 1b and the switch 2b are short-circuited; when the switch 1a and the switch 2a are short-circuited, the outer conductor is short-circuited with the wire connecting ends at the two ends; when the switch 1b is short-circuited with the switch 2b, the inner heating ring is short-circuited with the wire connection ends of both ends.
The wire connecting ends at the two ends are connected to the same phase transmission line at the two ends.
The switch 1a, the switch 2a, the switch 1b, the switch 2b and the variable resistance module are connected to the microprocessor and receive control of the microprocessor.
The microprocessor is connected with the wireless communication module, receives the control command of the control center through the wireless communication module, and transmits the data of the voltage measurement module to the control center.
See fig. 11, 12. When the inner heating ring is of an insulated wire structure or an insulated optical fiber tube structure, the two control systems of the same structure are composed of a voltage measuring module, a variable resistance module, a wire connecting end, a plurality of switches, a microprocessor and a wireless communication module. The wire connecting ends at the two ends are connected to the same phase transmission line at the two ends.
The inner side heating ring is provided with 4k+1 insulated wires with the same section in total, and the resistance of each insulated wire is the same and is RN; one of the insulated wires is connected to the wire connection terminal a through the switch 1B 17, and is connected to the wire connection terminal B through the switch 2B 19, and this insulated wire is called a parallel insulated wire 60; in addition, 4k wires are divided into two groups, each group is 2k wires, each group of 2k wires are connected in series to form a resistor of 2kRN times, and the wires formed in the connection mode are called as insulating resistance wires of 2k times; two ends of one group of 2k times of insulating resistance wires are connected to the parallel insulating wires 60 and the outer conductor 1 at the wire connecting end A, and two ends of the other group of 2k times of insulating resistance wires are connected to the parallel insulating wires 60 and the outer conductor 1 at the wire connecting end B, so that two 2k times of insulating resistance wires are connected in series with the outer conductor and then connected in parallel with the parallel insulating wires 60; one end of the 2k times insulated resistance wire connected to the parallel insulated wire 60 and the outer conductor is referred to as a 2k times insulated resistance wire series end, and the other end is referred to as a 2k times insulated resistance wire terminal.
The voltage measurement module is used for measuring the voltage between the outer conductor and the parallel insulated wire 60, and when the resistance of the variable resistance module is not 0, the voltage between the outer conductor and the parallel insulated wire of the wire has an analytic relationship with the resistance of the variable resistance module; the variable resistance module is connected between the outer conductor and the parallel insulated wire for generating a resistance between the outer conductor 1 and the parallel insulation of the wire.
Each switch and the variable resistance module are connected to the microprocessor and are controlled by the microprocessor; the microprocessor is connected with the wireless communication module, receives the control command of the control center through the wireless communication module, and transmits the data of the voltage measurement module to the control center.
The resistances of 4k+1 insulated conductors with the same section are RN, and the insulated conductors are divided into two groups of 2k times insulated resistance wires, and each group of 2k times insulated resistance wires;
for a 2k times insulated resistance wire connected to the outer conductor and parallel insulated wire at the a terminal, let switch ANk-1 be the switch with the a terminal closest to outer conductor 1, switch AN1 be the switch with the a terminal furthest from the outer conductor; the switches AN1, AN, … …, ANk-1 are connected to the connection point of the a ends of the adjacent two wires and the a ends of the parallel insulated wires in sequence.
When switch ANk-1 is open; ANk-2 to AN1 switches short circuit, and the resistance value of the insulating resistance wire is 2RN which is 2k times of the resistance value of the insulating resistance wire;
when the switches ANk-1, ANk-2 are open; ANk-3 to AN1 switches short circuit, and the resistance value of the insulating resistance wire is 4RN, wherein the resistance value is 2k times;
……
when the switches ANk-1, ANk-2, …, AN3 open AN2 to AN1 switch short circuit, the 2k times the insulation resistance wire resistance value is 2 (k-2) RN;
when the switches ANk-1, ANk-2, …, AN3, AN2 are open and AN1 is short-circuited, the resistance value of the insulation resistance wire is 2 (k-1) RN which is 2k times;
When the switches ANk-1, ANk-2, … and AN1 are open, the resistance of the 2k times the insulation resistance wire is 2kRN.
The connection mode of the 2k times insulated resistance wire and the switch at the end B and the end A is similar.
See fig. 13.
When 13 insulated wires are arranged in the inner heating ring control system, the number of the parallel insulated wires is 13; the voltage measurement module is used for measuring the voltage between the outer conductor and the No. 13 wire. When the resistance of the variable resistance module is not 0, the voltage between the outer conductor and the No. 13 wire has an analytic relationship with the resistance of the variable resistance module. The variable resistance module is connected between the outer conductor and the No. 13 wire for generating resistance between the outer conductor and the No. 13 wire.
Switch 1a is shorted or opened simultaneously with switch 2a, and switch 1b is shorted or opened simultaneously with switch 2 b. When the switch 1a is short-circuited with the switch 2a, the switch 1b is open-circuited with the switch 2 b; when the switch 1a and the switch 2a are opened, the switch 1b and the switch 2b are short-circuited; when the switch 1a and the switch 2a are short-circuited, the outer conductor is short-circuited with the wire connecting ends at the two ends; when the switch 1b is short-circuited with the switch 2b, the No. 13 wire is short-circuited with the wire connection ends of both ends.
The wire connecting ends at the two ends are connected to the same phase transmission line at the two ends.
The switch 1a, the switch 2a, the switch 1b, the switch 2b and the variable resistance module are connected to the microprocessor and are controlled by the microprocessor; the microprocessor is connected with the wireless communication module, receives the control command of the control center through the wireless communication module, and transmits the data of the voltage measurement module to the control center.
The insulated wires 11-n1 are wires 1, the insulated wires 11-n2 are wires 2, … …, the insulated wires 11-n12 are wires 12, and the insulated wires 11-n13 are wires 13. The resistances of the wire 1, the wire 2, the wire … … and the wire 13 are equal, and the resistances are RN. The parallel insulated wires are 13 wires, and the connection between each wire and the switch is as follows:
the lead 1 is in short circuit connection with the outer conductor at the end B; the end A is connected with a No. 2 lead in a short circuit way;
the wire No. 2 is in short circuit connection with the wire No. 3 at the end B; the end A is connected with a No. 1 lead in a short circuit manner;
the wire 3 is in short circuit connection with the wire 2 at the end B; the end A is in short circuit connection with a No. 4 lead;
the wire No. 4 is in short circuit connection with the wire No. 5 at the end B; the end A is in short circuit connection with a wire No. 3;
the wire No. 5 is in short circuit connection with the wire No. 4 at the end B; the end A is connected with a No. 6 lead in a short circuit way;
the wire No. 6 is in short circuit connection with the wire No. 13 at the end B; the end A is in short circuit connection with a No. 5 wire;
The wire 7 is in short circuit connection with the wire 8 at the end B; the end A is in short circuit connection with the outer conductor;
the wire No. 8 is in short circuit connection with the wire No. 7 at the end B; the end A is connected with a No. 9 lead in a short circuit manner;
the wire No. 9 is in short circuit connection with the wire No. 10 at the end B; the end A is connected with a No. 8 lead in a short circuit manner;
the wire 10 is in short circuit connection with the wire 9 at the end B; the end A is in short circuit connection with the No. 11 wire;
the wire 11 is in short circuit connection with the wire 12 at the end B; the end A is in short circuit connection with a No. 10 wire;
the wire No. 12 is in short circuit connection with the wire No. 11 at the end B; the end A is connected with a No. 13 lead in a short circuit manner;
one end of the switch A1 is connected to the A end of the No. 5 wire and the A end of the No. 6 wire in a short circuit way, and the other end of the switch A1 is connected to the A end of the outer conductor;
one end of the switch A2 is connected to the A end of the No. 3 wire and the A end of the No. 4 wire in a short circuit way, and the other end of the switch A2 is connected to the A end of the outer conductor:
one end of the switch A3 is connected to the A end of the No. 1 wire and the A end of the No. 2 wire in a short circuit way, and the other end of the switch A3 is connected to the A end of the outer conductor;
one end of the switch AW2 is connected to the A end of the No. 8 wire and the A end of the No. 9 wire in a short circuit way, and the other end of the switch AW2 is connected to the A end of the outer conductor; one end of the switch AW1 is connected to the A end of the No. 10 wire and the A end of the No. 11 wire in a short circuit way, and the other end of the switch AW1 is connected to the A end of the outer conductor; one end of the switch AN2 is connected to the A end of the No. 8 wire and the A end of the No. 9 wire in a short circuit way, and the other end of the switch AN2 is connected to the A end of the No. 13 wire;
One end of the switch AN1 is connected to the A end of the No. 10 wire and the A end of the No. 11 wire in a short circuit way, and the other end of the switch AN1 is connected to the A end of the No. 13 wire;
one end of the switch B1 is connected to the B ends of the 11 # wire and the 12 # wire in a short circuit way, and the other end of the switch B1 is connected to the B end of the outer conductor;
one end of the switch B2 is connected to the B ends of the No. 9 wire and the No. 10 wire in a short circuit way, and the other end of the switch B2 is connected to the B end of the outer conductor;
one end of the switch B3 is connected to the B ends of the wire 7 and the wire 8 in a short circuit way, and the other end of the switch B3 is connected to the B end of the outer conductor;
one end of the switch BW1 is connected to the B end of the No. 4 wire and the B end of the No. 5 wire in a short circuit way, and the other end of the switch BW1 is connected to the B end of the outer conductor;
one end of the switch BW2 is connected to the B end of the No. 2 wire and the B end of the No. 3 wire in a short circuit way, and the other end of the switch BW2 is connected to the B end of the outer conductor;
one end of the switch BN1 is connected to the B end of the No. 4 wire and the B end of the No. 5 wire in a short circuit way, and the other end of the switch BN1 is connected to the B end of the No. 13 wire;
one end of the switch BN2 is connected to the B end of the No. 2 wire and the B end of the No. 3 wire in a short circuit way, and the other end of the switch BN2 is connected to the B end of the No. 13 wire;
the switch A1, the switch A2, the switch A3, the switch AW1, the switch AW2, the switch AN1, the switch AN2, the switch B1, the switch B2, the switch B3, the switch BW1, the switch BW2, the switch BN1 and the switch BN2 are all connected with the microprocessors at the same end and are controlled by the microprocessors at the same end.
Switch 1a is shorted or opened simultaneously with switch 2a, and switch 1b is shorted or opened simultaneously with switch 2 b. When the switch 1a is short-circuited with the switch 2a, the switch 1b is open-circuited with the switch 2 b; when the switch 1a and the switch 2a are opened, the switch 1b and the switch 2b are short-circuited; when the switch 1a and the switch 2a are short-circuited, the outer conductor is short-circuited with the wire connecting ends at the two ends; when the switch 1b is short-circuited with the switch 2b, the No. 13 wire is short-circuited with the wire connection ends of both ends.
The switch 1a, the switch 2a, the switch 1b, the switch 2b and the variable resistance module are connected to the microprocessor and are controlled by the microprocessor; the microprocessor is connected with the wireless communication module, receives a control command of the control center through the wireless communication module, and transmits data of the voltage measurement module to the control center;
FIG. 14.
The heating control detection equipment variable resistance module comprises a variable resistance module A end, a variable resistance module B end, a short circuit resistor 40, a binary resistor 41, a quarter resistor 42, an eighth resistor 43, a single resistor 44, a double resistor 45, a quadruple resistor 46, an eighth resistor 47 and a sixteen resistor 48; short-circuit switch 49, two-way switch 50, four-way switch 51, eight-way switch 52, one-way switch 53, two-way switch 54, four-way switch 55, eight-way switch 56, sixteen-way switch 57.
One end of the short-circuit resistor 40 is connected with the short-circuit switch 49, and the other end is connected with the A end 38 of the variable resistor module; one end of the bipartite resistor 41 is connected with the bipartite switch 50, and the other end is connected with the A end 38 of the variable resistor module; one end of the quarter resistor 42 is connected with the quarter switch 51, and the other end is connected with the A end 38 of the variable resistor module; one end of the eighth resistor 43 is connected with the eighth switch 52, and the other end is connected with the A end 38 of the variable resistor module; one end of the single-time resistor 44 is connected with the single-time switch 53, and the other end is connected with the A end 38 of the variable resistor module; one end of the double resistor 45 is connected with the double switch 54, and the other end is connected with the A end 38 of the variable resistor module; the quadruple resistor 46 has one end connected to the quadruple switch 55 and one end connected to the variable resistor module a end 38; one end of the eighth-time resistor 47 is connected with the eighth-time switch 56, and the other end is connected with the A end 38 of the variable resistor module; sixteen-times resistor 48 has one end connected to sixteen-times switch 57 and one end connected to variable resistor module a end 38.
One end of the short-circuit switch 49 is connected with the short-circuit resistor 40, and the other end is connected with the variable resistor module B end 39; one end of the binary switch 50 is connected with the binary resistor 41, and the other end is connected with the variable resistor module B end 39; one end of the quarter switch 51 is connected with the quarter resistor 42, and the other end is connected with the variable resistor module B end 39; one end of the eighth switch 52 is connected with the eighth resistor 43, and the other end is connected with the variable resistor module B end 39; one end of the single-time switch 53 is connected with the single-time resistor 44, and the other end is connected with the variable resistor module B end 39; one end of the double switch 54 is connected with the double resistor 45, and the other end is connected with the variable resistor module B end 39; the quadruple switch 55 has one end connected to the quadruple resistor 46 and one end connected to the variable resistor module B end 39; one end of the eighth switch 56 is connected with the eighth resistor 47, and the other end is connected with the B end 39 of the variable resistor module; sixteen-times switch 57 has one end connected to sixteen-times resistor 48 and one end connected to variable resistor module B end 39.
When the heating equipment is short-circuited by the switches, the resistance value of the variable resistance module is the resistance value connected by each short-circuit switch in parallel; when all switches are open, the variable resistance module resistance value is infinite.
When the inner heating ring 4 is of an insulating structure or an insulating fiber structure, the resistances of the insulated wires are RN, and the variable resistance modules 20-1 and 20-2 are as follows: the short-circuit resistance is represented by R0; the bipartite resistor is denoted by RF 2; the quarter resistors are denoted by RF 4; the eighth resistor is denoted by RF 8; the single-time resistance is represented by RB 1; the double resistance is represented by RB 2; the quadruple resistance is represented by RB 4; the eight times resistance is represented by RB 8; sixteen times the resistance is represented by RB 16:
RB1＝RN；
R0＝0；RF2＝0.5RB1；RF4＝0.25RB1；RF8＝0.125RB1；
RB2＝2RB1；RB4＝4RB1；RB8＝8RB1；RB16＝16RB1；
for an inner heating ring control system connected with an inner heating ring 4 of a non-insulated wire structure, the resistance of the end A and the end B of the inner heating ring is Rab; rb1=rab.
All switches in the variable resistance module are connected with the microprocessor and are controlled by the microprocessor; when a switch is short-circuited, the resistor connected to the switch is connected to the variable resistor A terminal and the variable resistor B terminal. The microprocessor can control the number of resistors connected to the end A and the end B of the variable resistor by controlling the short circuit and the open circuit of the switch, and the resistors of the end A and the end B of the variable resistor are connected in parallel with the short circuit resistor of the switch. By controlling the combination of the switch short circuits, the resistance values of the variable resistor A end and the variable resistor B end can be adjusted from 0 to RB16, or the resistance values of the variable resistor A end and the variable resistor B end are infinite. The resistance values of the varistor a end and the varistor B end are Rout.
In this embodiment, the microprocessor selects a single-chip microcomputer, and in FIG. 15, U11 is MSP430F5438 is single-chip microcomputer/company TEXAS INSTRUMENTS in the United states. The microprocessor RS232 interface schematic is shown in fig. 16. U8: MAX232 RS232 interface chip/maxim company. The CH3 LOOPa and the CH3 LOOPb are connected with a communication interface connecting wire of the terminal power line carrier communication module. The CH4LOOPa and the CH4LOOPb are connected with a communication interface connecting line of the terminal electric parameter acquisition module. In the five-volt to three-volt power conversion circuit, UP18 is LM26400Y is power conversion chip/NATIONAL SEMICONDUCTOTR company in the United states. See fig. 18 for jtag circuitry between three volt to two volt power conversion circuits and fig. 19. In this embodiment, the switches used all use the same circuit. KT; LY1-J, UT1, manufactured by Toshiba corporation, japan, TLP521; QT4, US Fairchild Semiconductor Corporation company SS9013; QT1, company Fairchild Semiconductor Corporation usa: IN4148. Switch port a and switch port B are connected to the connection terminals that need to control the short circuit and the open circuit. RELAYIN1 is connected with the IO pin of the microprocessor.
The wireless communication module adopts a wireless transmission communication module: beijing Mi communications equipment Co., ltd: g300 type GSM data transmission module. The G300 type GSM data transmission module interface is connected with the microprocessor RS232 interface.
Voltage measuring module, product of zhen market, developing intelligent science and technology limited: model: ZH-40031.
The control center communicates with the control server 58 via the wireless communication module 23-3. The control server is a computer and sends control information to the microprocessors at the end A and the end B of the self-heating wire through the wireless communication module. The current of the inner heating ring is controlled by controlling the switches at the end A and the end B of the self-heating wire, so that the heating value is controlled.
The heating equipment of the multi-strand insulating self-heating wire has an automatic measurement and detection function. And (3) respectively performing shunt control, heating state power control and calculation and automatic detection of the self-heating wire state:
different detection methods are respectively arranged according to the different structures of the inner heating ring 4.
When the inner heating ring is of a non-insulated wire structure:
the shunt control method comprises the following steps:
normal power transmission:
the switch 1a and the switch 2a are short-circuited, the switch 1b and the switch 2b are open-circuited, and the resistance of the variable resistance module is 0; heating state power control and calculation:
the switch 1a and the switch 2a are opened, and the switch 1b and the switch 2b are short-circuited; the resistance of the inner heating ring A end and the resistance of the inner heating ring B end are Rab, the resistance of the variable resistance module is Rout,
assuming that the current flowing through the power transmission line is I, the current In the inner heating ring is:
Heating power W of inner heating ring:
automatic detection and control of self-made insulated heat conducting wire state:
the switches 1a and 2a are opened, the switches 1B and 2B are short-circuited, and the resistance values of the variable resistor A end and the variable resistor B end are Rout, rout=0.5 Rab;
when the voltage measurement module measures that the voltage is equal to 0.25Rab multiplied by I, the self-heating wire is considered to be normal, otherwise, the self-heating wire is considered to be abnormal;
when the inner heating ring is of an insulated wire structure and the number of the insulated wires is 1+4k=13:
normal power transmission:
the switches 1a and 2a are short-circuited, the switches 1b and 2b are open-circuited, the resistance of the variable resistance module is 0,
switch A1, switch A2, switch A3, switch B1, switch B2, switch B3, switch AW1, switch AW2, switch BW1, switch BW2 are shorted; switch AN1, switch AN2, switch BN1, switch BN2 open;
heating state power control and calculation:
the switch 1a and the switch 2a are opened, the switch 1B and the switch 2B are short-circuited, and the resistance values of the end A and the end B of the variable resistance module are Rout;
switch A1, switch A2, switch A3, switch B1, switch B2, switch B3, switch AW1, switch AW2, switch BW1, switch BW2 are open;
(1) Switch AN1, switch AN2, switch BN1, switch BN2 open
Is provided withR p Representing the parallel resistances at two ends;
Assuming that the current flowing through the transmission line is I, the current In at the wire No. 13 is:
heating power W of inner heating ring:
(2) Switch AN1, switch BN1 is shorted; switch AN2, switch BN2 open;
is provided with
Assuming that the current flowing through the transmission line is I, the current In at the wire No. 13 is:
heating power W of inner heating ring:
switch AN1, switch AN2, switch BN1, switch BN2 are shorted;
is provided with
Assuming that the current flowing through the transmission line is I, the current In at the wire No. 13 is:
heating power W of inner heating ring:
automatic detection of self-heating wire state:
the switch 1a and the switch 2a are opened, the switch 1b and the switch 2b are short-circuited, and the resistance of the variable resistance module is infinite;
switch A1, switch A2, switch A3, switch B1, switch B2, switch B3, switch AW1, switch AW2, switch BW1, switch BW2 are open; switch AN1, switch AN2, switch BN1, switch BN2 are open.
When the voltage measuring module measures voltage equal toAnd when the self-heating wire is in the normal state, the self-heating wire is considered to be abnormal. />

Claims (7)

1. Heating control detection equipment of multi-strand insulation self-heating wire, its characterized in that: the multi-strand insulating self-heating wire sequentially comprises an outer conductor (1), a protective metal ring (2), an insulating heat conducting ring (3) and an inner heating ring (4) from outside to inside, wherein two ends of the multi-strand insulating self-heating wire are called an end A and an end B, the end A is provided with a wire connecting end A (14), the end B is provided with a wire connecting end B (15), and the wire connecting ends at the two ends are connected to the same phase transmission line at the two ends of the wire; heating control detection equipment of multi-strand insulating self-heating wires with the same structure is respectively arranged at the connecting ends of the two wires;
The outer conductor (1) is made of metal or alloy, and surrounds the outer side of the protective metal ring, the protective metal ring (2) is made of metal ring, surrounds the outer side of the insulating heat conducting ring (3), and the insulating heat conducting ring (3) is made of insulating heat conducting material and surrounds the outer side of the inner side heating ring (4), so that the outer periphery of the inner side heating ring is completely surrounded, and the inner side heating ring (4) is completely isolated from the outer conductor (1); the inner surface of the insulating heat conducting ring (3) is completely contacted with the outer surface of the inner side heating ring (4), and the outer surface of the insulating heat conducting ring (3) is completely contacted with the inner surface of the protective metal ring (2);
the inner side heating ring (4) has three structures, and any one of the structures is adopted, and the three structures are respectively: an uninsulated wire structure, an insulated wire structure, and an insulated fiber optic tube structure; the non-insulated wire is a wire which is not added with insulating materials on the outer side of the wire; the insulated wire is a wire with an insulating material layer at the outer side of the wire, the insulating material layer is an insulating heat conducting material, and the wire is made of a metal material with larger resistivity and larger stress; the insulating optical fiber pipe is an optical fiber metal pipe with an insulating material layer on the outer side, and the insulating material layer is an insulating heat-conducting material;
the heating ring (4) at the inner side of the non-insulated wire structure is composed of one or more strands of non-insulated wires; when the insulating wire consists of a plurality of non-insulated wires, the non-insulated wires are mutually short-circuited, the non-insulated wires are made of metal materials with larger resistivity and larger stress,
The heating ring (4) at the inner side of the insulated wire structure is composed of a plurality of insulated wires;
the heating ring (4) at the inner side of the insulating optical fiber tube structure consists of a plurality of insulating wires and a plurality of insulating optical fiber tubes;
the heating control detection equipment of the multi-strand insulating self-heating wire arranged on the two wire connecting ends has the same structure and the same control mode, is symmetrically arranged on the wire connecting end A (14) and the wire connecting end B (15), and has two different structures according to the difference of the structures of the inner heating rings (4):
when the inner heating ring is of a non-insulated wire structure, the inner heating ring control systems of the end A and the end B are respectively composed of a voltage measurement module, a variable resistance module, a wire connecting end, two switches, a microprocessor and a wireless communication module; the voltage measurement module measures the voltage between the outer conductor and the inner heating ring, and when the resistance of the variable resistance module is not 0, the voltage between the outer conductor and the inner heating ring has an analytic relationship with the resistance of the variable resistance module; the variable resistance module is connected between the outer conductor and the inner heating ring and used for generating controllable resistance between the outer conductor and the inner heating ring; the two switches and the variable resistance module are connected to the microprocessor and are controlled by the microprocessor; the microprocessor is connected with the wireless communication module, receives a control command of the control center through the wireless communication module, and transmits data measured by the voltage measurement module to the control center;
When the inner side heating ring is of an insulated wire structure or an insulated optical fiber tube structure, the heating control detection equipment of the multi-strand insulated self-heating wires of the two same structures consists of a voltage measurement module, a variable resistance module, a wire connecting end, a plurality of switches, a microprocessor and a wireless communication module:
when the inner heating ring is of an insulated wire structure or an insulated optical fiber tube structure, the inner heating ring is provided with 4k+1 insulated wires with the same section in total, and the resistance of each insulated wire is the same and is RN; one of the insulated wires is connected with the wire connecting end A through a switch 1B (17) and is connected with the wire connecting end B through a switch 2B (19), and the insulated wire is called a parallel insulated wire (60); in addition, 4k wires are divided into two groups, each group is 2k wires, each group of 2k wires are connected in series to form 2kRN times of resistance, and the wires formed in the connection mode are 2k times of insulation resistance wires (61-1 and 61-2); two ends of one group of 2k times of insulating resistance wires (61-1) are connected to the parallel insulating wires (60) and the outer conductor (1) at the wire connecting end A, and two ends of the other group of 2k times of insulating resistance wires (61-2) are connected to the parallel insulating wires (60) and the outer conductor (1) at the wire connecting end B, so that two 2k times of insulating resistance wires are connected in series with the outer conductor and then connected in parallel with the parallel insulating wires (60); one end of the 2k times insulated resistance wire connected to the parallel insulated wire (60) and the outer conductor is called a 2k times insulated resistance wire series end, and the other end is called a 2k times insulated resistance wire end;
The voltage measurement module is used for measuring the voltage between the outer conductor and the parallel insulated wire (60), and when the resistance of the variable resistance module is not 0, the voltage between the outer conductor and the parallel insulated wire of the wire has an analytic relationship with the resistance of the variable resistance module; the variable resistance module is connected between the outer conductor and the parallel insulated wire and is used for generating resistance between the outer conductor (1) and the parallel insulated wire;
each switch and the variable resistance module are connected to the microprocessor and are controlled by the microprocessor; the microprocessor is connected with the wireless communication module, receives a control command of the control center through the wireless communication module, and transmits data of the voltage measurement module to the control center;
when the inner heating ring is of an uninsulated wire structure, the inner heating ring control system of the end A and the end B comprises:
switch 1a and switch 2a are simultaneously shorted or simultaneously opened, and switch 1b and switch 2b are simultaneously shorted or simultaneously opened; when the switch 1a is short-circuited with the switch 2a, the switch 1b is open-circuited with the switch 2 b; when the switch 1a and the switch 2a are opened, the switch 1b and the switch 2b are short-circuited; when the switch 1a and the switch 2a are short-circuited, the outer conductor is short-circuited with the wire connecting ends at the two ends; when the switch 1b is short-circuited with the switch 2b, the inner heating ring is short-circuited with the wire connecting ends at the two ends;
When the inner heating ring is of an insulated wire structure or an insulated optical fiber tube structure, in the inner heating ring control system of the end A and the end B:
switch 1a and switch 2a are simultaneously shorted or simultaneously opened, and switch 1b and switch 2b are simultaneously shorted or simultaneously opened;
when the switch 1a is short-circuited with the switch 2a, the switch 1b is open-circuited with the switch 2 b; when the switch 1a and the switch 2a are opened, the switch 1b and the switch 2b are short-circuited; when the switch 1a and the switch 2a are short-circuited, the outer conductor is short-circuited with the wire connecting ends at the two ends; when the switch 1b is short-circuited with the switch 2b, the parallel insulated wires are short-circuited with the wire connection ends at both ends;
when the multi-strand self-made heat conducting wire inner side heating ring (4) is of an insulating structure or an insulating optical fiber structure, the multi-strand self-made heat conducting wire sequentially comprises an outer conductor (1), a protective metal ring (2) and the inner side heating ring (4) from outside to inside.
2. The heating control detection apparatus for a multi-strand insulated self-heating wire as claimed in claim 1, wherein: when the inner side heating ring is of an insulating wire structure or an insulating optical fiber tube structure, 4k+1 insulated conductors with the same section in the inner side heating ring control system of the same structure are respectively of RN, and the resistances of the 4k+1 insulated conductors with the same section are divided into two groups of 2k times insulated resistance wires, wherein the connection relation between each group of 2k times insulated resistance wires and each switch is as follows:
For a 2k times insulated resistance wire connected to the outer conductor and parallel insulated wire at the a terminal, let switch ANk-1 be the switch with the a terminal closest to the outer conductor (1), switch AN1 be the switch with the a terminal furthest from the outer conductor; the switches AN1, AN, … … and ANk-1 are sequentially connected to the connection point of the A ends of two adjacent wires and the A end of the parallel insulated wire;
when switch ANk-1 is open; ANk-2 to AN1 switches short circuit, and the resistance value of the insulating resistance wire is 2RN which is 2k times of the resistance value of the insulating resistance wire;
when the switches ANk-1, ANk-2 are open; ANk-3 to AN1 switches short circuit, and the resistance value of the insulating resistance wire is 4RN, wherein the resistance value is 2k times;
……
when the switches ANk-1, ANk-2, …, AN3 open AN2 to AN1 switch short circuit, the 2k times the insulation resistance wire resistance value is 2 (k-2) RN;
when the switches ANk-1, ANk-2, …, AN3, AN2 are open and AN1 is short-circuited, the resistance value of the insulation resistance wire is 2 (k-1) RN which is 2k times;
when the switches ANk-1, ANk-2, … and AN1 are opened, the resistance value of the insulation resistance wire is 2kRN, which is 2k times that of the insulation resistance wire;
the connection mode of the 2k times insulated resistance wire and the switch at the end B and the end A is similar.
3. The heating control detection apparatus for a multi-strand insulated self-heating wire as claimed in claim 1, wherein: when the inner side heating ring is of an insulating wire structure or an insulating optical fiber wire, the inner side heating ring is provided with 13 insulated wires with the same cross section of 4k+1, the parallel insulated wires are 13 wires, and the connection between each wire and the switch is as follows: the lead 1 is in short circuit connection with the outer conductor at the end B; the end A is connected with a No. 2 lead in a short circuit way;
The wire No. 2 is in short circuit connection with the wire No. 3 at the end B; the end A is connected with a No. 1 lead in a short circuit manner;
the wire 3 is in short circuit connection with the wire 2 at the end B; the end A is in short circuit connection with a No. 4 lead;
the wire No. 4 is in short circuit connection with the wire No. 5 at the end B; the end A is in short circuit connection with a wire No. 3;
the wire No. 5 is in short circuit connection with the wire No. 4 at the end B; the end A is connected with a No. 6 lead in a short circuit way;
the wire No. 6 is in short circuit connection with the wire No. 13 at the end B; the end A is in short circuit connection with a No. 5 wire;
the wire 7 is in short circuit connection with the wire 8 at the end B; the end A is in short circuit connection with the outer conductor;
the wire No. 8 is in short circuit connection with the wire No. 7 at the end B; the end A is connected with a No. 9 lead in a short circuit manner;
the wire No. 9 is in short circuit connection with the wire No. 10 at the end B; the end A is connected with a No. 8 lead in a short circuit manner;
the wire 10 is in short circuit connection with the wire 9 at the end B; the end A is in short circuit connection with the No. 11 wire;
the wire 11 is in short circuit connection with the wire 12 at the end B; the end A is in short circuit connection with a No. 10 wire;
the wire No. 12 is in short circuit connection with the wire No. 11 at the end B; the end A is connected with a No. 13 lead in a short circuit manner;
one end of the switch A1 is connected to the A end of the No. 5 wire and the A end of the No. 6 wire in a short circuit way, and the other end of the switch A1 is connected to the A end of the outer conductor;
one end of the switch A2 is connected to the A end of the No. 3 wire and the A end of the No. 4 wire in a short circuit way, and the other end of the switch A2 is connected to the A end of the outer conductor: one end of the switch A3 is connected to the A end of the No. 1 wire and the A end of the No. 2 wire in a short circuit way, and the other end of the switch A3 is connected to the A end of the outer conductor;
One end of the switch AW2 is connected to the A end of the No. 8 wire and the A end of the No. 9 wire in a short circuit way, and the other end of the switch AW2 is connected to the A end of the outer conductor; one end of the switch AW1 is connected to the A end of the No. 10 wire and the A end of the No. 11 wire in a short circuit way, and the other end of the switch AW1 is connected to the A end of the outer conductor; one end of the switch AN2 is connected to the A end of the No. 8 wire and the A end of the No. 9 wire in a short circuit way, and the other end of the switch AN2 is connected to the A end of the No. 13 wire; one end of the switch AN1 is connected to the A end of the No. 10 wire and the A end of the No. 11 wire in a short circuit way, and the other end of the switch AN1 is connected to the A end of the No. 13 wire; one end of the switch B1 is connected to the B ends of the 11 # wire and the 12 # wire in a short circuit way, and the other end of the switch B1 is connected to the B end of the outer conductor; one end of the switch B2 is connected to the B ends of the No. 9 wire and the No. 10 wire in a short circuit way, and the other end of the switch B2 is connected to the B end of the outer conductor; one end of the switch B3 is connected to the B ends of the wire 7 and the wire 8 in a short circuit way, and the other end of the switch B3 is connected to the B end of the outer conductor;
one end of the switch BW1 is connected to the B end of the No. 4 wire and the B end of the No. 5 wire in a short circuit way, and the other end of the switch BW1 is connected to the B end of the outer conductor; one end of the switch BW2 is connected to the B end of the No. 2 wire and the B end of the No. 3 wire in a short circuit way, and the other end of the switch BW2 is connected to the B end of the outer conductor; one end of the switch BN1 is connected to the B end of the No. 4 wire and the B end of the No. 5 wire in a short circuit way, and the other end of the switch BN1 is connected to the B end of the No. 13 wire; one end of the switch BN2 is connected to the B end of the No. 2 wire and the B end of the No. 3 wire in a short circuit way, and the other end of the switch BN2 is connected to the B end of the No. 13 wire; the switch A1, the switch A2, the switch A3, the switch AW1, the switch AW2, the switch AN1, the switch AN2, the switch B1, the switch B2, the switch B3, the switch BW1, the switch BW2, the switch BN1 and the switch BN2 are all connected with the microprocessors at the same end and are controlled by the microprocessors at the same end.
4. The heating control detection apparatus for a multi-strand insulated self-heating wire as claimed in claim 1, wherein: when the inner side heating ring is of a non-insulated conductor structure, 7 strands of non-insulated steel wires are adopted as the non-insulated conductor; when the inner heating ring is of an insulating optical fiber structure, the insulating optical fiber structure consists of 9 insulating wires and 3 insulating light tubes.
5. The heating control detection apparatus for a multi-strand insulated self-heating wire as claimed in claim 1, wherein: the heating control detection equipment variable resistance module comprises a variable resistance module A end (38), a variable resistance module B end (39), a short circuit resistor (40), a binary resistor (41), a quarter resistor (42), an eighth resistor (43), a single resistor (44), a double resistor (45), a quadruple resistor (46), an eighth resistor (47) and a sixteen resistor (48); a short-circuit switch (49), a two-way switch (50), a four-way switch (51), an eight-way switch (52), a one-way switch (53), a two-way switch (54), a four-way switch (55), an eight-way switch (56) and a sixteen-way switch (57); one end of the short-circuit resistor (40) is connected with the short-circuit switch (49), and the other end is connected with the end A (38) of the variable resistor module; one end of the bipartite resistor (41) is connected with the bipartite switch (50), and the other end is connected with the end A (38) of the variable resistor module; one end of the quarter resistor (42) is connected with the quarter switch (51), and the other end is connected with the end A (38) of the variable resistor module; one end of the eighth resistor (43) is connected with the eighth switch (52), and the other end is connected with the end A (38) of the variable resistor module; one end of the single resistor (44) is connected with the single switch (53), and the other end is connected with the end A (38) of the variable resistor module; one end of the double resistor (45) is connected with the double switch (54), and the other end is connected with the end A (38) of the variable resistor module; one end of the quadruple resistor (46) is connected with the quadruple switch (55), and the other end is connected with the end A (38) of the variable resistor module; one end of the eight-time resistor (47) is connected with the eight-time switch (56), and the other end is connected with the end A (38) of the variable resistor module; one end of the sixteen-time resistor (48) is connected with the sixteen-time switch (57), and the other end is connected with the end A (38) of the variable resistor module;
One end of a short-circuit switch (49) is connected with the short-circuit resistor (40), and the other end is connected with the end (39) of the variable resistor module B; one end of the bipartite switch (50) is connected with the bipartite resistor (41), and the other end is connected with the end (39) of the variable resistor module B; one end of the quarter switch (51) is connected with the quarter resistor (42), and the other end is connected with the variable resistor module B end (39); one end of the eighth switch (52) is connected with the eighth resistor (43), and the other end is connected with the B end (39) of the variable resistor module; one end of the single-time switch (53) is connected with the single-time resistor (44), and the other end is connected with the B end (39) of the variable resistor module; one end of the double switch (54) is connected with the double resistor (45), and the other end is connected with the variable resistor module B end (39); one end of the quadruple switch (55) is connected with the quadruple resistor (46), and the other end is connected with the B end (39) of the variable resistor module; one end of the eight-time switch (56) is connected with the eight-time resistor (47), and the other end is connected with the B end (39) of the variable resistor module; one end of the sixteen-time switch (57) is connected with the sixteen-time resistor (48), and the other end is connected with the B end (39) of the variable resistor module;
when the heating equipment is short-circuited by the switches, the resistance value of the variable resistance module is the resistance value connected by each short-circuit switch in parallel; when all switches are open, the variable resistance module resistance value is infinite.
6. The heating control detection apparatus for a multi-strand insulated self-heating wire as claimed in claim 1, wherein: when the inner heating ring (4) is of an insulating structure or an insulating optical fiber structure, the resistance of each insulating wire is RN, and in the variable resistance modules (20-1, 20-2): the short-circuit resistance is represented by R0; the bipartite resistor is denoted by RF 2; the quarter resistors are denoted by RF 4; the eighth resistor is denoted by RF 8; the single-time resistance is represented by RB 1; the double resistance is represented by RB 2; the quadruple resistance is represented by RB 4; the eight times resistance is represented by RB 8; sixteen times the resistance is represented by RB 16:
RB1＝RN；
R0＝0；RF2＝0.5RB1；RF4＝0.25RB1；RF8＝0.125RB1；
RB2＝2RB1；RB4＝4RB1；RB8＝8RB1；RB16＝16RB1；
when the inner heating ring is of an uninsulated wire structure, if the resistances at the a end and the B end of the inner heating ring are Rab, rb1=rab.
7. An automatic measurement and detection control method of a heating control detection device for multi-strand insulated self-heating wires according to claim 1, wherein: the automatic measurement and detection method comprises the steps of shunt control, heating state power control and calculation and automatic detection of the self-heating wire state; different measurement detection and control are respectively carried out according to the different structures of the inner heating ring (4):
automatic measurement detection and control of heating control detection equipment when the inner heating ring is of an uninsulated wire structure:
The shunt control method comprises the following steps:
normal power transmission:
the switch 1a and the switch 2a are short-circuited, the switch 1b and the switch 2b are open-circuited, and the resistance of the variable resistance module is 0;
heating state power control and calculation:
the switch 1a and the switch 2a are opened, and the switch 1b and the switch 2b are short-circuited; an inner heating ring A end and an inner heating ring B are arranged
The resistance of the end is Rab, and the resistance of the variable resistance module is R out ,
Assuming that the current flowing through the power transmission line is I, the current In the inner heating ring is:
heating power W of inner heating ring:
automatic detection and control of the state of the insulated self-heating wire:
the switches 1a and 2a are opened, the switches 1B and 2B are short-circuited, the resistance values of the end A and the end B of the variable resistor are Rout, and rout=0.5 Rab;
when the voltage measurement module measures that the voltage is equal to 0.25Rab multiplied by I, the self-heating wire is considered to be normal, otherwise, the self-heating wire is considered to be abnormal;
the inner heating ring is of an insulated wire structure, and automatic measurement detection and control of heating equipment are performed when the number of the insulated wires is 1+4k=13:
normal power transmission:
the switches 1a and 2a are short-circuited, the switches 1b and 2b are open-circuited, the resistance of the variable resistance module is 0,
switch A1, switch A2, switch A3, switch B1, switch B2, switch B3, switch AW1, switch AW2, switch BW1, switch BW2 are shorted; switch AN1, switch AN2, switch BN1, switch BN2 open;
Heating state power control and calculation:
the switch 1a and the switch 2a are opened, the switch 1B and the switch 2B are short-circuited, and the resistance values of the end A and the end B of the variable resistance module are Rout;
switch A1, switch A2, switch A3, switch B1, switch B2, switch B3, switch AW1, switch AW2, switch BW1, switch BW2 are open;
(1) Switch AN1, switch AN2, switch BN1, switch BN2 open
Is provided withR p Representing parallel resistors at two ends
If the current flowing through the transmission line is I, the current I of the No. 13 wire n The method comprises the following steps:
heating power W of inner heating ring:
(2) Switch AN1, switch BN1 is shorted; switch AN2, switch BN2 open;
is provided with
Assuming that the current flowing through the transmission line is I, the current In at the wire No. 13 is:
heating power W of inner heating ring:
switch AN1, switch AN2, switch BN1, switch BN2 are shorted;
is provided with
Assuming that the current flowing through the transmission line is I, the current In at the wire No. 13 is:
heating power W of inner heating ring:
automatic detection of self-heating wire state:
the switch 1a and the switch 2a are opened, the switch 1b and the switch 2b are short-circuited, and the resistance of the variable resistance module is infinite; switch A1, switch A2, switch A3, switch B1, switch B2, switch B3, switch AW1, switch AW2, switch BW1, switch BW2 are open; switch AN1, switch AN2, switch BN1, switch BN2 open when the voltage measurement module measures voltage equal to And when the self-heating wire is in the normal state, the self-heating wire is considered to be abnormal.
CN201811195033.0A 2018-10-12 2018-10-12 Heating control detection equipment and detection control method for multi-strand insulating self-heating wire Active CN109239438B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811195033.0A CN109239438B (en) 2018-10-12 2018-10-12 Heating control detection equipment and detection control method for multi-strand insulating self-heating wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811195033.0A CN109239438B (en) 2018-10-12 2018-10-12 Heating control detection equipment and detection control method for multi-strand insulating self-heating wire

Publications (2)

Publication Number Publication Date
CN109239438A CN109239438A (en) 2019-01-18
CN109239438B true CN109239438B (en) 2023-09-12

Family

ID=65052977

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811195033.0A Active CN109239438B (en) 2018-10-12 2018-10-12 Heating control detection equipment and detection control method for multi-strand insulating self-heating wire

Country Status (1)

Country Link
CN (1) CN109239438B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021088513A1 (en) * 2019-11-08 2021-05-14 四川大学 Intelligent ice melting device based on self-heating wire and ice melting method thereof

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9120742D0 (en) * 1990-10-12 1991-11-13 Boston Edison Company Non-destructive status determination for electric power cables
JP2003004244A (en) * 2001-06-22 2003-01-08 Izena:Kk Water leakage detecting apparatus and water leakage detecting method for water container for floor cooling and heating structure
CN103852613A (en) * 2012-11-29 2014-06-11 沈阳工业大学 Radiation current sensing method and special sensor
CA2834541A1 (en) * 2012-12-21 2014-06-21 Murray W. Davis Portable self powered line mountable device for measuring and transmitting solar radiation
WO2014123139A1 (en) * 2013-02-05 2014-08-14 デクセリアルズ株式会社 Short-circuit element and circuit using same
CN106229059A (en) * 2016-09-30 2016-12-14 四川大学 A kind of from ice melting electric cable and ice-melting device thereof
CN206225052U (en) * 2016-09-30 2017-06-06 四川大学 It is a kind of from ice melting electric cable and its ice-melting device
CN108306253A (en) * 2018-04-04 2018-07-20 广州天河高新技术产业开发区中盛电气有限公司 Detect the method that current carrying conductor rate of temperature change realizes overcurrent protection
CN108366442A (en) * 2018-04-23 2018-08-03 四川大学 The self-control heat conductor and heating equipment and its implementation of embedded insulating heat-conduction material
CN209296795U (en) * 2018-10-12 2019-08-23 四川大学 The heating of multiply insulation self-control thermal wire controls detection device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9120742D0 (en) * 1990-10-12 1991-11-13 Boston Edison Company Non-destructive status determination for electric power cables
JP2003004244A (en) * 2001-06-22 2003-01-08 Izena:Kk Water leakage detecting apparatus and water leakage detecting method for water container for floor cooling and heating structure
CN103852613A (en) * 2012-11-29 2014-06-11 沈阳工业大学 Radiation current sensing method and special sensor
CA2834541A1 (en) * 2012-12-21 2014-06-21 Murray W. Davis Portable self powered line mountable device for measuring and transmitting solar radiation
WO2014123139A1 (en) * 2013-02-05 2014-08-14 デクセリアルズ株式会社 Short-circuit element and circuit using same
CN106229059A (en) * 2016-09-30 2016-12-14 四川大学 A kind of from ice melting electric cable and ice-melting device thereof
CN206225052U (en) * 2016-09-30 2017-06-06 四川大学 It is a kind of from ice melting electric cable and its ice-melting device
CN108306253A (en) * 2018-04-04 2018-07-20 广州天河高新技术产业开发区中盛电气有限公司 Detect the method that current carrying conductor rate of temperature change realizes overcurrent protection
CN108366442A (en) * 2018-04-23 2018-08-03 四川大学 The self-control heat conductor and heating equipment and its implementation of embedded insulating heat-conduction material
CN209296795U (en) * 2018-10-12 2019-08-23 四川大学 The heating of multiply insulation self-control thermal wire controls detection device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
传感技术在船舶上的应用;苏文业;;科技信息(第23期);23-24 *

Also Published As

Publication number Publication date
CN109239438A (en) 2019-01-18

Similar Documents

Publication Publication Date Title
CN108366442B (en) Self-made heat conductor heating equipment embedded with insulating heat conducting material and implementation method thereof
US10186858B2 (en) Device for a current limiter and a current limiter comprising said device
CN106229059B (en) A kind of ice-melting device from ice melting electric cable
CN206225052U (en) It is a kind of from ice melting electric cable and its ice-melting device
CN201181607Y (en) Aerial snow-melting and deicing optical/electrical cable
JP2011517267A (en) System and method for deicing power line cables
CN109449854B (en) Station-used lossless three-phase current divider for preventing ice and melting ice and design and control method
CN109239438B (en) Heating control detection equipment and detection control method for multi-strand insulating self-heating wire
CN109361187B (en) Line-to-line lossless single-phase shunt and design and control method
CN206433205U (en) It is a kind of from ice-melt conductor and its ice-melting device
CN112133482A (en) Cold-resistant flexible cable and preparation process thereof
CN110112694A (en) A kind of high-tension cable, cable connection methods, de-icing method and deicing system
CN103956719B (en) A kind of column combined type superconduction resistance sense type current limiter
CN102495328A (en) Differential power reactor fault on-line monitoring instrument
CN201302835Y (en) Overhead wire for current-uninterrupted automatic ice-melting
CN109361186A (en) Station lossless single-phase current divider and design and control method for anti-icing ice-melt
CN209298845U (en) Lossless single-phase current divider between line
CN105761837A (en) Optical fiber composite overhead ground wire with fast ice melting function
EP3121860B1 (en) System for limiting energy in a power supply network
CN208175017U (en) It is embedded in the heating equipment of the self-control heat conductor of insulating heat-conduction material
CN203689973U (en) High-resistance steel core ice-melting lead
CN109149493B (en) Heating control equipment and control method for multi-strand insulation self-heating overhead ground wire
CN109347041B (en) Interline lossless three-phase current divider and design and control method
CN208904612U (en) Processed thermal control equipment of the multiply insulation from heating aerial earth wire
CN201251941Y (en) Outer layer insulating single-line insulating round-line concentric stranded wire overhead line conductor and an automatic thawing apparatus

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant