CN109546730B - Transient wave recording type fault indicator and power supply method thereof - Google Patents
Transient wave recording type fault indicator and power supply method thereof Download PDFInfo
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- CN109546730B CN109546730B CN201910064413.9A CN201910064413A CN109546730B CN 109546730 B CN109546730 B CN 109546730B CN 201910064413 A CN201910064413 A CN 201910064413A CN 109546730 B CN109546730 B CN 109546730B
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- 230000001052 transient effect Effects 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims abstract description 90
- 230000005611 electricity Effects 0.000 claims abstract description 30
- 239000003381 stabilizer Substances 0.000 claims description 33
- 238000007599 discharging Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 230000006698 induction Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a transient wave recording type fault indicator and a power supply method thereof, and belongs to the field of transient wave recording type fault indicators. The transient wave recording type fault indicator comprises a shell, a lower cover, a CT electricity taking module, a power supply management circuit and a solar panel bracket; the CT electricity taking module is arranged at the upper end of the shell, and the lower cover is fixed at the lower end of the shell; the power supply management circuit is arranged in a space between the shell and the lower cover; the solar panel bracket is arranged on the shell; the power supply management circuit comprises a control chip, a dry battery power supply module, a rechargeable battery power supply module, a super capacitor power supply module and a solar power supply module; the solar panel is arranged on the solar panel bracket; the problem that the CT electricity taking mode is difficult to obtain enough electric quantity for the equipment end to use when the load current is less than 3A is solved; the power supply effect of the transient wave recording type fault indicator is ensured in multiple ways.
Description
Technical Field
The embodiment of the invention relates to the field of transient filtering type fault indicators, in particular to a transient recording type fault indicator and a power supply method thereof.
Background
With the development of technology, transient wave recording fault indicators are widely used in 35KV and below medium voltage transmission lines to monitor and judge various faults in the transmission lines.
Each set of transient wave recording fault indicator consists of three acquisition units and one set of collection unit, wherein the three acquisition units are correspondingly arranged on an A phase, a B phase and a C phase of a power transmission line according to the A phase, the B phase and the C phase, the collection units are arranged on a telegraph pole, the collection units are in communication connection with a monitoring main station system, the acquired data are sent to the collection units through the acquisition units, and then the collection units are used for sending the data to the monitoring main station system, so that the remote measurement and fault judgment of a circuit electric field and a current value are realized.
At present, most acquisition units adopt CT (mutual inductor) electricity taking design, namely induction electricity taking from an alternating current transmission line by utilizing the mutual inductance effect. The power taking mode can obtain more sufficient electric quantity for the acquisition unit to use when aiming at the power transmission line with the load current of more than 3A-5A, but the obtained electric quantity is insufficient for the acquisition unit to use when aiming at the power transmission line with the load current of less than 3A. In the actual transmission line, the load current of the transmission line with a few special types is below 3A.
Disclosure of Invention
In order to solve the problems in the prior art, the embodiment of the invention provides a transient wave recording type fault indicator and a power supply method thereof. The technical scheme is as follows:
in a first aspect, a transient wave recording type fault indicator is provided, including a housing, a lower cover, a CT power taking module, a power supply management circuit, and a solar panel bracket;
the CT electricity taking module is arranged at the upper end of the shell, and the lower cover is fixed at the lower end of the shell;
the power supply management circuit is arranged in a space between the shell and the lower cover;
The solar panel bracket is arranged on the shell;
The power supply management circuit comprises a control chip, a dry battery power supply module, a rechargeable battery power supply module, a super capacitor power supply module and a solar power supply module, wherein the dry battery power supply module, the rechargeable battery power supply module, the super capacitor power supply module and the solar power supply module are respectively connected with the control chip;
the rechargeable battery power supply module and the super capacitor power supply module are respectively connected with the solar power supply module;
The CT electricity taking module is connected with a control chip in the power supply management circuit;
The dry battery power supply module comprises a dry battery and a dry battery power supply circuit;
The rechargeable battery power supply module comprises a rechargeable battery, a rechargeable battery power supply circuit and a rechargeable battery voltage detection circuit;
The super capacitor power supply module comprises a super capacitor and a super capacitor charging and discharging circuit;
The solar power supply module comprises a solar panel and a solar charge-discharge circuit;
The solar panel is arranged on the solar panel bracket.
Optionally, the solar panel bracket is composed of two support plates;
The first backup pad sets up on the shell, and the one end of second backup pad is fixed with the one end of first backup pad, and the contained angle between first backup pad and the second backup pad is the obtuse angle.
Optionally, the CT electricity taking module comprises a current transformer, a voltage stabilizer, a DC-DC power module, a full-bridge converter, a TVS diode, a plurality of capacitors and resistors;
the current transformer is connected with a DC-DC power supply module through a full-bridge converter, and the DC-DC power supply module is connected with a power end of the control chip through a voltage stabilizer;
a TVS diode and a capacitor are connected in parallel between the current transformer and the full-bridge converter, and a TVS diode and a capacitor are connected in parallel between the full-bridge converter and the DC-DC power module.
Optionally, in the dry battery power supply module, the dry battery power supply circuit includes a triode, a voltage stabilizer, a MOS tube, and a plurality of capacitors and resistors;
The base electrode of the triode is connected with the control chip, the collector electrode of the triode is connected with the grid electrode of the MOS tube, the source electrode of the MOS tube is connected with the dry battery, the drain electrode of the MOS tube is connected with the voltage stabilizer, and the output end of the voltage stabilizer is powered.
Optionally, in the rechargeable battery power supply module, the rechargeable battery power supply circuit includes a voltage stabilizer, an input end of the voltage stabilizer is connected with the rechargeable battery, and an output end of the voltage stabilizer supplies power;
The rechargeable battery voltage detection circuit comprises a first resistor and a second resistor, wherein the common end of the first resistor and the common end of the second resistor are connected with the control chip, and the first resistor is connected with the rechargeable battery;
the rechargeable battery is connected with the solar charge-discharge circuit.
Optionally, in the super capacitor power supply module, the super capacitor charging and discharging circuit comprises a triode, a MOS tube, a voltage stabilizer and a diode;
The base electrode of the triode is connected with the control chip, the collector electrode of the triode is connected with the grid electrode of the MOS tube, and the MOS tube is connected with the solar charge-discharge circuit in the solar power supply module;
The source electrode of the MOS tube is connected with the super capacitor, the drain electrode of the MOS tube is connected with the voltage stabilizer, and the output end of the voltage stabilizer supplies power.
Optionally, in the solar power supply module, the solar charging and discharging circuit comprises a battery charging management chip, a triode and an MOS tube;
The base electrode of the triode is connected with the control chip, the collector electrode of the triode is connected with the grid electrode of the MOS tube, and the solar panel is connected with the collector electrode of the triode;
the MOS tube is connected with the charge management chip, the output end of the charge management chip supplies power, and the charge management chip is respectively connected with the super capacitor charge and discharge circuit and the rechargeable battery.
In a second aspect, a power supply method for a transient wave recording type fault indicator is provided, and the power supply method is applied to the transient wave recording type fault indicator shown in the first aspect, and the method includes:
detecting whether the power supply current acquired by the CT power acquisition module is larger than a first current value or not;
If the power supply current acquired by the CT power acquisition module is detected to be larger than the first current value, controlling the power supply current acquired by the CT power acquisition module to supply power for the transient wave recording type fault indicator, and detecting whether the electric quantity of the rechargeable battery is sufficient; if the electric quantity of the rechargeable battery is detected to be insufficient, the solar power supply module is controlled to charge the rechargeable battery;
if the power supply current acquired by the CT power acquisition module is smaller than the first current value, detecting whether the power supply current acquired by the CT power acquisition module is larger than the second current value;
If the power supply current acquired by the CT power acquisition module is detected to be larger than a second current value, detecting whether the super capacitor is electrified or not; if the super capacitor is detected to be electrified, controlling the power supply current acquired by the CT power taking module and the super capacitor to supply power for the transient wave recording fault indicator, detecting whether the electric quantity of the rechargeable battery is sufficient, and if the electric quantity of the rechargeable battery is detected to be insufficient, controlling the solar power supply module to charge the rechargeable battery; if the electric quantity of the super capacitor is detected to be exhausted, controlling the power supply current acquired by the CT power taking module and the solar power supply module to supply power for the transient wave recording type fault indicator, detecting whether the electric quantity of the rechargeable battery is sufficient, and if the electric quantity of the rechargeable battery is detected to be insufficient, controlling the solar power supply module to charge the rechargeable battery;
if the power supply current acquired by the CT power taking module is smaller than the second current value, detecting whether the power supply current acquired by the solar power supply module is larger than the first current value or not;
If the power supply current acquired by the solar power supply module is detected to be larger than the first current value, the solar power supply module is controlled to supply power to the transient wave recording fault indicator, whether the electric quantity of the rechargeable battery is sufficient or not is detected, and if the electric quantity of the rechargeable battery is detected to be insufficient, the solar power supply module is controlled to charge the rechargeable battery;
If the power supply current acquired by the solar power supply module is detected to be smaller than a first current value, detecting whether the voltage of the rechargeable battery is smaller than a preset voltage, and if the voltage of the rechargeable battery is detected to be not smaller than the preset voltage, controlling the solar power supply module and the rechargeable battery power supply module to supply power for the transient wave recording type fault indicator; and if the voltage of the rechargeable battery is detected to be smaller than the preset voltage, controlling the solar power supply module and the dry battery power supply module to supply power for the transient wave recording type fault indicator.
Alternatively, the first current value is 5mA, the second current value is 2mA, and the predetermined voltage is 3.2V.
Optionally, the method further comprises:
and if the electric quantity of the rechargeable battery is detected to be sufficient, controlling the solar power supply module to charge the super capacitor.
The technical scheme provided by the embodiment of the invention has the beneficial effects that:
The solar panel, the super capacitor, the rechargeable battery and the dry battery are arranged on the acquisition unit of the transient wave recording type fault indicator, and the power supply management circuit is correspondingly arranged, a solar panel bracket is fixed on the shell of the acquisition unit, the solar panel is fixed on the solar panel bracket, the control chip, the solar power supply module, the super capacitor power supply module, the rechargeable battery power supply module and the dry battery power supply module are utilized, when the power supply current obtained by the CT power supply module does not meet the power consumption current requirement, the control chip controls at least one of the solar panel, the super capacitor, the rechargeable battery and the dry battery to supply power to the transient wave recording type fault indicator according to the states of other power supply modules, so that the problem that the CT power supply mode is difficult to obtain enough electric quantity for the equipment end to use when the load current is less than 3A is solved; the effect of multiple guarantee of power supply of the transient wave recording type fault indicator is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a transient recording type fault indicator, according to an exemplary embodiment;
FIG. 2 is a front view of a transient recording type fault indicator, according to an exemplary embodiment;
FIG. 3 is a top view of a transient recording type fault indicator shown according to an exemplary embodiment;
FIG. 4 is a left side view of a transient recording mode fault indicator shown according to an exemplary embodiment;
FIG. 5 is a partial cross-sectional view of a transient wave recording type fault indicator shown according to an exemplary embodiment;
FIG. 6 is a schematic diagram of a solar panel rack according to an exemplary embodiment;
FIG. 7 is a front view of a solar panel bracket according to an exemplary embodiment;
FIG. 8 is a top view of a solar panel bracket according to an exemplary embodiment;
FIG. 9 is a block diagram of a power management circuit, according to an exemplary embodiment;
FIG. 10 is a circuit schematic diagram of a circuit in which a control chip is shown according to an exemplary embodiment;
FIG. 11 is a circuit schematic of a CT power module shown in accordance with an exemplary embodiment;
FIG. 12 is a schematic circuit diagram of a solar powered module shown according to an exemplary embodiment;
FIG. 13 is a schematic circuit diagram of a rechargeable battery powered module shown according to an exemplary embodiment;
FIG. 14 is a circuit schematic of a super capacitor power module shown according to an example embodiment;
FIG. 15 is a circuit schematic of a dry cell power module shown according to an exemplary embodiment;
Fig. 16 is a flowchart of a method of powering a transient recording mode fault indicator in accordance with an example embodiment.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
The transient wave recording type fault indicator related in the embodiment of the invention refers to a collecting unit in the transient wave recording type fault indicator, namely, the structure is the structure of the collecting unit in the transient wave recording type fault indicator, and the power supply method is also used for the collecting unit in the transient wave recording type fault indicator.
As shown in fig. 1 to 5, the transient wave recording type fault indicator comprises a housing 1, a lower cover 2, a CT electricity taking module, a power supply management circuit and a solar panel bracket.
The CT electricity taking module 5 is arranged at the upper end of the shell 1, and the CT electricity taking module 5 is arranged in an annular area at the upper end of the shell 1. The annular area of shell 1 upper end can be pulled open along the S1 direction, and circular hole 4 can be put into to the power transmission line, and CT gets the electricity module and can realize getting electricity from the induction on the power transmission line.
Optionally, a current transformer CT in the CT power taking module is disposed at the upper end of the housing 1.
The lower cover 2 is fixed to the lower end of the housing 1. Optionally, the inner side of the lower cover 2 and the bottom of the housing 1 are provided with mating threads, and the lower cover 2 may be fixed to the bottom of the housing 1 by the threads.
The power supply management circuit 6 is disposed in a space between the housing 2 and the lower cover.
The power supply management circuit 6 comprises a control chip, a dry battery power supply module, a rechargeable battery power supply module, a super capacitor power supply module and a solar power supply module. The dry battery power supply module comprises a dry battery and a dry battery power supply circuit; the rechargeable battery power supply module comprises a rechargeable battery, a rechargeable battery power supply circuit and a rechargeable battery voltage detection circuit; the super capacitor power supply module comprises a super capacitor and a super capacitor charging and discharging circuit; the solar power supply module comprises a solar panel and a solar charge-discharge circuit.
The CT power taking module, the dry battery power supply module, the rechargeable battery power supply module, the super capacitor power supply module and the solar power supply module are all used for supplying power for the transient wave recording type fault indicator. The control chip is used for controlling at least one of the CT electricity taking module, the dry battery power supply module, the rechargeable battery power supply module, the super capacitor power supply module and the solar power supply module to supply power for the transient wave recording type fault indicator according to the current condition obtained by the CT electricity taking module and the voltage conditions of different power supply modules.
It should be noted that, specific positions of the dry cell, the rechargeable battery and the super capacitor are not shown in fig. 5, and the specific positions of the dry cell, the rechargeable battery and the super capacitor may be determined according to actual needs, which is not limited in the embodiment of the present invention.
The solar panel is arranged on the solar panel bracket.
The solar panel support is composed of two support plates, namely a first support plate 31 and a second support plate 32. The solar cell panels are arranged on the first supporting plate and the second supporting plate, and the two solar cell panels are connected in parallel. Alternatively, the solar panel is a monocrystalline silicon panel. Optionally, the rated power of the single solar panel is 0.2W, under the condition that the sunlight is sufficient in the actual test, the power current can reach 50mA (3.3V), the average power current under the general condition of the sunlight can reach 20mA (3.3V), and the power current is smaller and smaller than 20mA (3.3V) under the condition that the sunlight is insufficient.
The first support plate 31 is provided on the housing 1 as shown in fig. 1; the solar cell panel is mounted on the front surface of the first support plate 31, i.e., the surface of the first support plate 31 that is not in contact with the housing 1.
One end of the second support plate 32 is fixed to the first support plate 31, and an included angle between the first support plate 31 and the second support plate 32 is an obtuse angle. The solar cell panel is installed at an upward side of the second support plate 32.
As shown in fig. 6, the first support plate 31 is provided with a screw through hole 35, and the first support plate 31 is fixed to the housing 1 by the screw through hole 35 and a screw. The first support plate 31 and the second support plate 32 are each provided with a wiring hole 34.
Alternatively, perforations may be provided on the housing 1 at corresponding locations of the first support plate 31, and the electrical wires on the solar panel may pass through the wiring holes 34 and connect to the electrical circuit within the housing 1 through the perforations on the housing 1.
In the power supply management circuit, the control chip 200 is respectively connected with the CT power taking module 210, the dry battery power supply module 220, the rechargeable battery power supply 230, the solar power supply module 240 and the super capacitor power supply module 250.
Fig. 10 schematically shows a circuit of the power management circuit where the control chip is located. Optionally, the model of the control chip U7 is STM8S105K6.
The solar power supply module comprises a solar panel and a solar charge-discharge circuit, and the solar charge-discharge circuit is connected with the solar panel and the control chip U7. As shown in fig. 12, the solar charge-discharge circuit includes a battery charge management chip U2, a transistor Q16, a MOS transistor Q2, and a plurality of capacitors and resistors.
The base of the triode Q16 is connected with the control chip U7, the collector of the triode Q16 is connected with the grid electrode of the MOS tube Q2, and the solar cell panel BT1 is connected with the collector of the triode Q16.
The MOS tube Q2 is connected with the charging management chip U2, the output end of the charging management chip U2 supplies power, and the charging management chip U2 is respectively connected with the super capacitor charging and discharging circuit and the rechargeable battery.
The charge_en pin in the solar power supply module is connected with the charge_en pin in the control chip; in the Solar charging module, a Solar Power pin of the Solar cell panel BT1 is connected with a Solar Power pin of a Solar charging and discharging circuit, and a Chargeable Power pin of the charging management chip U2 is used for supplying Power.
The specific connection manner of the capacitor and the resistor in the solar power supply module is shown in fig. 12, and will not be described herein.
Optionally, the model of the charge management chip U2 is TP4067.
Fig. 11 schematically illustrates a circuit diagram of a CT power module, which includes a current transformer CT, a voltage regulator U6, a DC-DC power module U5, a full-bridge converter D10, TVS diodes TVS1 and TVS2, and a number of capacitors and resistors.
The current transformer CT is connected with a DC-DC power supply module U5 through a full-bridge converter D10, and the DC-DC power supply module U5 is connected with a power end of a control chip U7 through a voltage stabilizer U6. The VCC3V3 pin in the CT electricity taking module is connected with the VCC3V3 pin of the control chip U7.
A TVS1 and a capacitor C31 are connected in parallel between the current transformer CT and the full-bridge converter D10, and a TVS2 and capacitors C2, C32, C33, C34 and C36 are connected in parallel between the full-bridge converter D10 and the DC-DC power supply module U5.
The specific connection manner of the capacitor and the resistor in the CT power taking module is shown in fig. 11, and will not be described herein.
Optionally, the DC-DC power module U5 is PI-05V-B4.
Optionally, the voltage regulator U6 is of the type S1206 or XC6206 or BL8064CB3TR33.
Optionally, the CT electricity taking module takes electricity by adopting permalloy material, and when the current of the transmission line is above 5A, the power supply current not lower than 5mA can be obtained.
Fig. 13 exemplarily shows a circuit schematic diagram of a rechargeable battery power supply module, which includes a rechargeable battery BT2, a rechargeable battery power supply circuit, and a rechargeable battery voltage detection circuit, the rechargeable battery power supply circuit is connected to the control chip U7, and the rechargeable battery voltage detection circuit is connected to the control chip U7.
The rechargeable battery power supply circuit comprises a voltage stabilizer U1 and a diode D8, wherein the input end of the voltage stabilizer U1 is connected with the rechargeable battery BT2, and the output end of the voltage stabilizer U1 is used for supplying power. Specifically, the ChargeablePower pin of the voltage regulator U1 is connected to the Chargeable Power pin of the rechargeable battery BT 2.
The rechargeable battery voltage detection circuit comprises a first resistor R39 and a second resistor R40, wherein a common terminal ADC_BAT_charge of the first resistor R39 and the second resistor R40 is connected with an ADC_BAT_charge pin of the control chip U7, and the first resistor R39 is connected with the rechargeable battery BT 2.
The rechargeable battery BT2 is connected with a solar charging and discharging circuit, and particularly, a Chargeable Power pin of a charging management chip U2 in the solar charging and discharging circuit is connected with a Chargeable Power pin of the rechargeable battery BT2 in the rechargeable battery supply module, so that the rechargeable battery is charged by the solar charging battery.
Optionally, the rechargeable battery is a lithium battery, and the working temperature is in a range of-30 ℃ to 60 ℃. Alternatively, the capacity of the rechargeable battery may be up to 7Ah.
Fig. 14 schematically illustrates a circuit diagram of a supercapacitor power module including a supercapacitor C4 and a supercapacitor charge-discharge circuit.
The super capacitor charging and discharging circuit comprises a triode Q4, a MOS tube Q5, a voltage stabilizer U4, diodes D3 and D9, and a plurality of capacitors and resistors.
The base of the triode Q4 is connected with the control chip U7, and the collector of the triode Q4 is connected with the grid electrode of the MOS tube Q5.
The MOS tube Q5 is connected with a solar charge-discharge circuit in the solar power supply module; the Chargeable Power pin of the charging management chip U2 in the solar charging and discharging circuit is connected with the Chargeable Power pin in the super capacitor charging and discharging circuit in the super capacitor power supply module, so that the solar rechargeable battery can charge the super capacitor C4.
The source electrode of the MOS tube Q5 is connected with the super capacitor C4, the drain electrode of the MOS tube Q5 is connected with the input end of the voltage stabilizer U4, and the output end of the voltage stabilizer U4 supplies power.
The specific connection manner of the capacitor and the resistor in the super capacitor charge-discharge circuit is shown in fig. 14, and will not be described here again.
Optionally, the model of the voltage stabilizer U4 in the super capacitor power supply module is S1206, XC6206 or BL8064CB3TR33.
Alternatively, the super capacitor C4 may be used for the transient recording fault indicator to run at full speed for about 1 hour, and the average power consumption of the device host of the transient recording fault indicator is about 5mA (3.3V).
Fig. 15 exemplarily shows a circuit schematic of a dry battery power supply module including a dry battery BT3 and a dry battery power supply circuit.
The dry battery power supply circuit comprises a triode Q3, a MOS tube Q1 voltage stabilizer U3, a diode D7, and a plurality of capacitors and resistors. The base of the triode Q3 is connected with the control chip U7, namely the DRY_BAT_EN pin of the triode Q3 connected with the resistor R6 is connected with the DRY_BAT_EN pin of the control chip U7.
The collector of the triode Q3 is connected with the grid of the MOS tube Q1, the source of the MOS tube Q1 is connected with the dry battery BT3, the drain of the MOS tube Q1 is connected with the input end of the voltage stabilizer U3, and the output end of the voltage stabilizer U3 supplies power.
The specific connection manner of the capacitor and the resistor in the dry battery power supply circuit is shown in fig. 15, and will not be described here again.
Optionally, the voltage regulator U3 is of the type S1206 or XC6206 or BL8064CB3TR33.
Alternatively, the dry cell is a standby dry cell, is a disposable cell, and has a battery capacity of 14Ah.
In the circuit diagrams shown in fig. 10 to 15, any two pins with the same reference numerals are connected.
Considering that the rechargeable battery has the limitation of service life, the dry battery is a standby disposable battery, and the power supply priority is as follows: CT electricity taking > CT electricity taking + super capacitor power supply > CT electricity taking + solar power supply > solar power supply + rechargeable battery power supply > solar power supply + dry battery power supply.
Referring to fig. 16, a flowchart of a power supply method of a transient recording mode fault indicator according to an embodiment of the invention is shown. The power supply method of the transient wave recording type fault indicator is suitable for the transient wave recording type fault indicator shown in fig. 1 to 15. As shown in fig. 16, the power supply method of the transient wave recording type fault indicator may include the following steps:
step 1, detecting whether the power supply current acquired by the CT power taking module is larger than a first current value.
Optionally, the first current value is 5mA.
The control chip detects whether the power supply current acquired by the CT power taking module is larger than a first current value.
And if the power supply current acquired by the CT power taking module is detected to be larger than the first current value, adopting a CT power taking mode, namely executing the step 2.
And if the power supply current acquired by the CT power taking module is detected to be smaller than the first current value, executing the step 3.
And 2, controlling the power supply current obtained by the CT power taking module to supply power for the transient wave recording type fault indicator, and detecting whether the electric quantity of the rechargeable battery is sufficient.
When the power supply current acquired by the CT power taking module is larger than the first current value, the control chip controls the power supply current acquired by the CT power taking module to supply power for the transient wave recording type fault indicator, and whether the rechargeable battery is in a full-power state is detected.
If the electric quantity of the rechargeable battery is detected to be insufficient, namely the rechargeable battery is not in a full-charge state, the control chip controls the solar power supply module to charge the rechargeable battery; if the electric quantity of the rechargeable battery is detected to be sufficient, namely the rechargeable battery is in a full-charge state, the rechargeable battery is not charged, and the control chip controls the solar power supply module to charge the super capacitor.
Optionally, the redundant electric quantity obtained by the CT electricity taking module is also used for charging the super capacitor.
And step 3, detecting whether the power supply current acquired by the CT power taking module is larger than a second current value.
Optionally, the second current value is 2mA.
When the power supply current acquired by the CT power taking module is smaller than the first current value, the control chip detects whether the power supply current acquired by the CT power taking module is larger than the second current value.
And if the control chip detects that the power supply current acquired by the CT power taking module is larger than the second current value, executing the step 4.
And if the control chip detects that the power supply current acquired by the CT power taking module is smaller than the second current value, executing the step 7.
The second current value is less than the first current value.
And step 4, detecting whether the super capacitor is electrified.
When the power supply current acquired by the CT power taking module is smaller than the first current value and the power supply current acquired by the CT power taking module is larger than the second current value, the control chip detects whether the super capacitor is electrified or not.
And if the control chip detects that the super capacitor is electrified, adopting a CT electricity taking and super capacitor power supply mode to execute the step 5.
If the control chip detects that the super capacitor is exhausted, a CT electricity taking and solar power supplying mode is adopted, and step 6 is executed.
And 5, controlling the power supply current and the super capacitor obtained by the CT power taking module to supply power for the transient wave recording type fault indicator, and detecting whether the rechargeable battery is sufficient or not.
When the power supply current acquired by the CT power taking module is larger than the second current value and the super capacitor is electrified, the control chip controls the power supply current acquired by the CT power taking module and the super capacitor to supply power for the transient wave recording fault indicator.
If the electric quantity of the rechargeable battery is detected to be insufficient, namely the rechargeable battery is not in a full-charge state, the control chip controls the solar power supply module to charge the rechargeable battery; if the electric quantity of the rechargeable battery is detected to be sufficient, namely the rechargeable battery is in a full-charge state, the rechargeable battery is not charged.
And 6, controlling the power supply current acquired by the CT power taking module and the solar power supply module to supply power for the transient wave recording type fault indicator, and detecting whether the electric quantity of the solar battery is sufficient.
When the power supply current acquired by the CT power taking module is larger than the second current value and the electric quantity of the super capacitor is exhausted, the control chip controls the power supply current acquired by the CT power taking module and the solar power supply module to supply power for the transient wave recording type fault indicator at the same time.
If the electric quantity of the rechargeable battery is detected to be insufficient, namely the rechargeable battery is not in a full-charge state, the control chip controls the solar power supply module to charge the rechargeable battery; if the electric quantity of the rechargeable battery is detected to be sufficient, namely the rechargeable battery is in a full-charge state, the rechargeable battery is not charged.
If the control chip detects that the sum of the power supply current obtained by CT power taking and the power supply current obtained by the solar power supply module is smaller than the first current value, the step 11 is directly skipped.
And 7, detecting whether the power supply current acquired by the solar power supply module is larger than a first current value.
When the power supply current acquired by the CT power taking module is smaller than the second current value, the control chip detects whether the power supply current acquired by the solar power supply module is larger than the first current value.
And if the control chip detects that the power supply current acquired by the solar power supply module is larger than the first current value, adopting a solar power supply mode to execute the step 8.
And if the control chip detects that the power supply current acquired by the solar power supply module is smaller than the first current value, executing the step 9.
And 8, controlling the solar power supply module to supply power for the transient wave recording type fault indicator, and detecting whether the electric quantity of the rechargeable battery is sufficient.
When the power supply current acquired by the CT power taking module is smaller than the second current value and the power supply current acquired by the solar power supply module is larger than the first current value, the control chip controls the solar power supply module to supply power for the transient wave recording type fault indicator, and the control chip detects whether the electric quantity of the rechargeable battery is sufficient.
If the electric quantity of the rechargeable battery is detected to be insufficient, namely the rechargeable battery is not in a full-charge state, the control chip controls the redundant electric quantity obtained by the solar power supply module to charge the rechargeable battery; if the electric quantity of the rechargeable battery is detected to be sufficient, namely the rechargeable battery is in a full-charge state, the rechargeable battery is not charged, and the redundant electric quantity obtained by the solar power supply module is controlled to charge the super capacitor.
Optionally, the electric quantity obtained by the CT electricity obtaining module is used for charging the super capacitor.
Step 9, detecting whether the voltage of the rechargeable battery is less than a predetermined voltage.
When the power supply current acquired by the CT power taking module is smaller than the second current value and the power supply current acquired by the solar power supply module is smaller than the first current value, the control chip detects whether the voltage of the rechargeable battery is smaller than a preset voltage.
Alternatively, the predetermined voltage is 3.2V.
If the voltage of the rechargeable battery is not less than the preset voltage, the step 10 is executed by adopting a solar power supply and rechargeable battery power supply module.
If the voltage of the rechargeable battery is detected to be smaller than the preset voltage, the step 11 is executed by adopting a solar power supply and dry battery power supply module.
And step 10, controlling the solar power supply module and the rechargeable battery power supply module to supply power for the transient wave recording fault indicator.
When the power supply current acquired by the CT power taking module is smaller than the second current value, the power supply current acquired by the solar power supply module is smaller than the first current value, and the voltage of the rechargeable battery is not smaller than the preset voltage, the control chip controls the solar power supply module and the rechargeable battery power supply module to supply power for the transient wave recording type fault indicator.
Or the power supply current obtained by the CT power taking module is larger than the second current value and smaller than the first current value, and when the sum of the power supply current obtained by the CT power taking module and the power supply current obtained by the solar power supply module is smaller than the first current value, the control chip controls the solar power supply module and the rechargeable battery power supply module to supply power for the transient recording type fault indicator.
The control chip controls the electric quantity obtained by the CT electricity taking module to charge the super capacitor.
And 11, controlling the solar power supply module and the dry battery power supply module to supply power for the transient wave recording type fault indicator.
When the power supply current obtained by the CT power taking module is smaller than the second current value, the current obtained by the solar power supply module is smaller than the first current value, and the voltage of the rechargeable battery is smaller than the preset voltage, the control chip controls the solar power supply module and the dry battery power supply module to supply power for the transient wave recording type fault indicator.
Optionally, the control chip controls the electric quantity obtained by the CT electricity taking module to charge the super capacitor.
In summary, according to the embodiment of the invention, the solar panel, the super capacitor, the rechargeable battery and the dry battery are arranged on the acquisition unit of the transient wave recording type fault indicator, and the power supply management circuit is correspondingly arranged, the solar panel bracket is fixed on the shell of the acquisition unit, the solar panel is fixed on the solar panel bracket, the control chip, the solar power supply module, the super capacitor power supply module, the rechargeable battery power supply module and the dry battery power supply module are utilized, when the power supply current obtained by the CT power supply module does not meet the power consumption current requirement, the control chip controls at least one of the solar panel, the super capacitor, the rechargeable battery and the dry battery to supply power to the transient wave recording type fault indicator according to the states of other power supply modules, so that the problem that the CT power supply mode is difficult to obtain enough electric quantity for equipment ends to use when the load current is less than 3A is solved; the effect of multiple guarantee of power supply of the transient wave recording type fault indicator is achieved.
It should be noted that: the foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (4)
1. The power supply method of the transient wave recording type fault indicator is characterized by being applied to the transient wave recording type fault indicator, wherein the transient wave recording type fault indicator comprises a shell, a lower cover, a CT power taking module, a power supply management circuit and a solar panel bracket; the CT electricity taking module is arranged at the upper end of the shell, and the lower cover is fixed at the lower end of the shell; the power supply management circuit is arranged in a space between the shell and the lower cover; the solar panel bracket is arranged on the shell; the power supply management circuit comprises a control chip, a dry battery power supply module, a rechargeable battery power supply module, a super capacitor power supply module and a solar power supply module, wherein the dry battery power supply module, the rechargeable battery power supply module, the super capacitor power supply module and the solar power supply module are respectively connected with the control chip; the rechargeable battery power supply module and the super capacitor power supply module are respectively connected with the solar power supply module; the CT electricity taking module is connected with a control chip in the power supply management circuit; the dry battery power supply module comprises a dry battery and a dry battery power supply circuit; the rechargeable battery power supply module comprises a rechargeable battery, a rechargeable battery power supply circuit and a rechargeable battery voltage detection circuit; the super capacitor power supply module comprises a super capacitor and a super capacitor charging and discharging circuit; the solar power supply module comprises a solar cell panel and a solar charge-discharge circuit; the solar panel is arranged on the solar panel bracket; the power supply method comprises the following steps:
detecting whether the power supply current acquired by the CT power acquisition module is larger than a first current value or not;
If the power supply current acquired by the CT power acquisition module is detected to be larger than the first current value, controlling the power supply current acquired by the CT power acquisition module to supply power for the transient wave recording type fault indicator, and detecting whether the electric quantity of the rechargeable battery is sufficient; if the electric quantity of the rechargeable battery is detected to be insufficient, the solar power supply module is controlled to charge the rechargeable battery;
if the power supply current acquired by the CT power acquisition module is smaller than the first current value, detecting whether the power supply current acquired by the CT power acquisition module is larger than the second current value;
If the power supply current acquired by the CT power acquisition module is detected to be larger than a second current value, detecting whether the super capacitor is electrified or not; if the super capacitor is detected to be electrified, controlling the power supply current acquired by the CT power taking module and the super capacitor to supply power for the transient wave recording fault indicator, detecting whether the electric quantity of the rechargeable battery is sufficient, and if the electric quantity of the rechargeable battery is detected to be insufficient, controlling the solar power supply module to charge the rechargeable battery; if the electric quantity of the super capacitor is detected to be exhausted, controlling the power supply current acquired by the CT power taking module and the solar power supply module to supply power for the transient wave recording type fault indicator, detecting whether the electric quantity of the rechargeable battery is sufficient, and if the electric quantity of the rechargeable battery is detected to be insufficient, controlling the solar power supply module to charge the rechargeable battery;
if the power supply current acquired by the CT power taking module is smaller than the second current value, detecting whether the power supply current acquired by the solar power supply module is larger than the first current value or not;
If the power supply current acquired by the solar power supply module is detected to be larger than the first current value, the solar power supply module is controlled to supply power to the transient wave recording fault indicator, whether the electric quantity of the rechargeable battery is sufficient or not is detected, and if the electric quantity of the rechargeable battery is detected to be insufficient, the solar power supply module is controlled to charge the rechargeable battery;
If the power supply current acquired by the solar power supply module is detected to be smaller than a first current value, detecting whether the voltage of the rechargeable battery is smaller than a preset voltage, and if the voltage of the rechargeable battery is detected to be not smaller than the preset voltage, controlling the solar power supply module and the rechargeable battery power supply module to supply power for the transient wave recording type fault indicator; if the voltage of the rechargeable battery is detected to be smaller than the preset voltage, the solar power supply module and the dry battery power supply module are controlled to supply power for the transient wave recording type fault indicator;
The CT electricity taking module comprises a current transformer, a first voltage stabilizer, a DC-DC power module, a full-bridge converter, a TVS diode, a plurality of capacitors and resistors; the current transformer is connected with the DC-DC power supply module through the full-bridge converter, and the DC-DC power supply module is connected with a power end of the control chip through the first voltage stabilizer; a TVS diode and a capacitor are connected in parallel between the current transformer and the full-bridge converter, and a TVS diode and a capacitor are connected in parallel between the full-bridge converter and the DC-DC power module;
in the dry battery power supply module, the dry battery power supply circuit comprises a first triode, a second voltage stabilizer, a first MOS tube, a plurality of capacitors and resistors; the base electrode of the first triode is connected with the control chip, the collector electrode of the first triode is connected with the grid electrode of the first MOS tube, the source electrode of the first MOS tube is connected with the dry battery, the drain electrode of the first MOS tube is connected with the second voltage stabilizer, and the output end of the second voltage stabilizer is powered;
In the rechargeable battery power supply module, the rechargeable battery power supply circuit comprises a third voltage stabilizer, the input end of the third voltage stabilizer is connected with the rechargeable battery, and the output end of the third voltage stabilizer supplies power; the rechargeable battery voltage detection circuit comprises a first resistor and a second resistor, wherein the common end of the first resistor and the common end of the second resistor are connected with the control chip, and the first resistor is connected with the rechargeable battery; the rechargeable battery is connected with the solar charging and discharging circuit;
In the super capacitor power supply module, the super capacitor charge-discharge circuit comprises a second triode, a second MOS tube, a fourth voltage stabilizer and a diode; the base electrode of the second triode is connected with the control chip, the collector electrode of the second triode is connected with the grid electrode of the second MOS tube, and the second MOS tube is connected with a solar charge-discharge circuit in the solar power supply module; the source electrode of the second MOS tube is connected with the super capacitor, the drain electrode of the second MOS tube is connected with the fourth voltage stabilizer, and the output end of the fourth voltage stabilizer is powered;
In the solar power supply module, the solar charge-discharge circuit comprises a battery charge management chip, a third triode and a third MOS tube; the base electrode of the third triode is connected with the control chip, the collector electrode of the third triode is connected with the grid electrode of the third MOS tube, and the solar panel is connected with the collector electrode of the third triode; the third MOS tube is connected with the charging management chip, the output end of the charging management chip supplies power, and the charging management chip is respectively connected with the super capacitor charging and discharging circuit and the rechargeable battery.
2. The method of claim 1, wherein the first current value is 5mA, the second current value is 2mA, and the predetermined voltage is 3.2V.
3. The method according to claim 1, wherein the method further comprises:
and if the electric quantity of the rechargeable battery is detected to be sufficient, controlling the solar power supply module to charge the super capacitor.
4. The method of claim 1, wherein the solar panel support is comprised of two support plates;
the first backup pad sets up on the shell, the one end of second backup pad is fixed with the one end of first backup pad, and the contained angle between first backup pad and the second backup pad is the obtuse angle.
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| CN112436586A (en) * | 2020-11-26 | 2021-03-02 | 石家庄科林电气股份有限公司 | Power supply system based on double super capacitor sets |
| CN114530926A (en) * | 2021-11-12 | 2022-05-24 | 国网浙江省电力有限公司平湖市供电公司 | Power supply equipment and method capable of automatically switching power supply mode |
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