CN108710005A - Dielectric loss partial discharge sensor structure and capacitive high-voltage electrical equipment testing agency - Google Patents
Dielectric loss partial discharge sensor structure and capacitive high-voltage electrical equipment testing agency Download PDFInfo
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- CN108710005A CN108710005A CN201810601087.6A CN201810601087A CN108710005A CN 108710005 A CN108710005 A CN 108710005A CN 201810601087 A CN201810601087 A CN 201810601087A CN 108710005 A CN108710005 A CN 108710005A
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- partial discharge
- dielectric loss
- discharge sensor
- end shield
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- Testing Relating To Insulation (AREA)
Abstract
The present invention relates to a kind of dielectric loss partial discharge sensor structure and capacitive high-voltage electrical equipment testing agencies.The dielectric loss partial discharge sensor structure, including understructure, the shell structure being connected on the understructure, dielectric loss sensing module, high frequency partial discharge sensing module, the superfrequency partial discharge sensing module being set to independently of each other in the shell structure, and the conductor rods in the shell structure are arranged in, and the conductor rods pass through the dielectric loss sensing module, the high frequency partial discharge sensing module, the superfrequency partial discharge sensing module.Technical solution proposed by the present invention can carry out the installation of test equipment and be detected under the premise of not having a power failure, it is also ensured that the reliability of equipment.
Description
Technical field
The present invention relates to power supply unit Test And Check Technology field, more particularly to a kind of dielectric loss partial discharge sensor structure and appearance
Property high-voltage electrical equipment testing agency.
Background technology
In order to which the capacitive high-voltage electrical equipment to operation is not had a power failure verification test, using compared with method as the electricity of principle
Appearance type capacitive high-voltage electrical equipment dielectric loss live testing technology and the electrification shelf depreciation inspection of high-frequency method capacitive high-voltage electrical equipment
Survey technology is in power grid pilot conversion and obtains certain effect.But these measuring technologies, which fail realization, to be widely applied, reason
When being to carry out live testing using above equipment, need to access dielectric loss measuring instrument, partial discharge detection instrument or ultrahigh frequency partial discharge detection
The detection devices such as instrument, but power failure operation is needed when installing these detection devices, to bring inconvenience to installation, but also
Certain economic loss can be brought.In addition, equipment can be influenced by carrying out terminal box installation or sensor access in existing equipment
Reliability will produce potential security risk.
Invention content
Based on this, to solve the above problems, a kind of dielectric loss partial discharge sensor structure of present invention proposition and capacitive High-Voltage Electrical Appliances
Equipment testing agency can carry out the installation of test equipment and is detected under the premise of not having a power failure, it is also ensured that equipment can
By property.
Its technical solution is as follows：
A kind of dielectric loss partial discharge sensor structure, including understructure, the shell structure being connected on the understructure, phase
Dielectric loss sensing module, high frequency partial discharge sensing module, the superfrequency partial discharge sensing module being mutually independently set in the shell structure,
And the conductor rods in the shell structure are arranged in, and the conductor rods pass through the dielectric loss sensing module, the high frequency office
Put sensing module, the superfrequency partial discharge sensing module；
The shell structure includes the metal shell being set on the understructure, and is formed in the metal shell
Closed cavity；
The dielectric loss sensing module include be set to the closed cavity in dielectric loss sensor main body, and with the dielectric loss
Sensor main body connects and protrudes from the dielectric loss sensor connector outside the metal shell；
The high frequency partial discharge sensing module includes the high frequency partial discharge sensor main body being set in the closed cavity, Yi Jiyu
The high frequency partial discharge sensor main body connects and protrudes from the high frequency partial discharge sensor connector outside the metal shell；
The superfrequency partial discharge sensing module includes the superfrequency partial discharge sensor main body being set in the closed cavity, with
And it is connect with the superfrequency partial discharge sensor main body and protrudes from the superfrequency partial discharge sensor outside the metal shell and connect
Head；The dielectric loss sensor main body, the high frequency partial discharge sensor main body, the superfrequency partial discharge sensor main body are mutually only
It erects and sets, and the conductor rods are each passed through the dielectric loss sensor main body, the high frequency partial discharge sensor main body and the spy
High frequency partial discharge sensor main body and one end protrude from outside the shell structure.
Its further technical solution is illustrated below：
Further, the dielectric loss sensor main body, the high frequency partial discharge sensor main body, superfrequency partial discharge sensing
Device main body is gone here and there successively in the closed cavity, and the dielectric loss sensor connector, the high frequency partial discharge sensor connector, institute
It states superfrequency partial discharge sensor connector and is sequentially arranged in the metal shell peripheral side.
Further, the dielectric loss sensor connector is set as six core modular connections, the high frequency partial discharge sensor connector and
The superfrequency partial discharge sensor connector is disposed as TNC modular connections.
Further, the shell structure further include connect the connector of the understructure and the metal shell, and
The connector passes through and fixes the dielectric loss sensor main body, the high frequency partial discharge sensor main body and the superfrequency partial discharge
Sensor main body.
Further, the shell structure further includes being respectively arranged at first insulation sleeve and at the metal shell both ends
Two insulation sleeves, described conductor rods one end is arranged in first insulation sleeve, the other end is arranged in second insulation sleeve.
Further, the conductor rods include the conductor head protruded from outside the metal shell, the dielectric loss partial discharge sensing
Device structure further includes the ground connection cap being removably connected on the conductor head, and the ground connection cap is contacted and covered with metal shell
The conductor head.
In addition, the present invention also proposes a kind of capacitive high-voltage electrical equipment testing agency, including dielectric loss partial discharge as described above
Sensor structure, and the end shield device that is detachably connected with the dielectric loss partial discharge sensor structure.
Further, the end shield device includes end shield pedestal, the end shield guide rod being set on the end shield pedestal, Yi Jilian
It is connected to the end shield lead of the end shield guide rod, and the end shield guide rod other end is detachably connected with the conductor rods.
Further, the understructure includes the base body being connect with the metal shell, and is opened in described
Base plate through holes in base body, the conductor rods further include end shield connector corresponding with the base plate through holes, the end shield
Guide rod passes through the base plate through holes and is detachably connected with the end shield connector.
Further, the end shield device further includes being set on the end shield pedestal and enclosing set on end shield guide rod week
The end shield connector sleeve enclosed, the end shield connector sleeve are removably connected in the base body.
The present invention has the advantages that：Realize capacitive high-voltage electrical equipment do not have a power failure carry out dielectric loss, partial discharge test,
It realizes that the manufacture of capacitive high-voltage electrical equipment, handing-over prevent and power failure experiment is unified with charging test mode, it is reliable to realize end shield
Ground connection realizes safe and convenient removal when sensor does not need and is reduced to traditional capacitive high-voltage electrical equipment structure.
Description of the drawings
Fig. 1 is the forward sight structural schematic diagram of the sensor structure of dielectric loss partial discharge described in the embodiment of the present invention；
Fig. 2 is the schematic cross-sectional view of the sensor structure of dielectric loss partial discharge described in the embodiment of the present invention；
Fig. 3 is the schematic cross-sectional view of end shield device described in the embodiment of the present invention (when installation ground connection cap)；
Fig. 4 is the schematic cross-sectional view of end shield device described in the embodiment of the present invention (when unloading ground connection cap)；
Fig. 5 is the section view knot of the testing agency of capacitive high-voltage electrical equipment described in the embodiment of the present invention (when installation ground connection cap)
Structure schematic diagram；
Fig. 6 is the section view knot of the testing agency of capacitive high-voltage electrical equipment described in the embodiment of the present invention (when unloading ground connection cap)
Structure schematic diagram.
Reference sign：
10- wire clamps, 100- dielectric loss partial discharge sensor structures, 110- understructures, 120- metal shells, 122- connectors,
The first insulation sleeves of 124-, the second insulation sleeves of 126-, 130- ground connection caps, 140- dielectric loss sensing modules, 142- dielectric loss sensor main bodies,
144- dielectric loss sensor connectors, 150- high frequency partial discharge sensing modules, 152- high frequency partial discharge sensor main bodies, 154- high frequency partial discharges pass
Sensor connector, 160- superfrequency partial discharge sensing modules, 162- superfrequency partial discharge sensor main bodies, 164- superfrequency partial discharge sensors
Connector, 170- conductor rods, 172- conductor heads, 174- end shield connectors, 200- end shield devices, 210- end shield pedestals, 220- end shields
Connector sleeve, 222- connection bolts, 230- end shield guide rods, 240- end shield leads, 250- screws, 260- end shield insulation sleeves.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein phase in each figure
Same label indicates identical part.The embodiments described below with reference to the accompanying drawings are exemplary, is only used for explaining this hair
It is bright, and it is not understood to limitation of the present invention.
As shown in Figure 1 to Figure 2, the present invention proposes a kind of dielectric loss partial discharge sensor structure, including understructure 110, connection
Shell structure on the understructure 110, dielectric loss sensing module 140, the high frequency being set to independently of each other in the shell structure
Partial discharge sensing module 150, superfrequency partial discharge sensing module 160, and the conductor rods 170 that are arranged in the shell structure, and should
Conductor rods 170 pass through above-mentioned dielectric loss sensing module 140, high frequency partial discharge sensing module 150, superfrequency partial discharge sensing module 160.On
It gives an account of 160 3 damage sensing module 140, high frequency partial discharge sensing module 150, superfrequency partial discharge sensing module function modules and passes through shell
Body structure is combined as an entirety, becomes combination intelligent sensor.Moreover, above-mentioned dielectric loss sensing module 140, high frequency partial discharge sense
Module 150, superfrequency partial discharge sensing module 160 are three independent modules, can be any with these three function modules when needing
Combination forms the product of different function.Using the combination intelligent sensor, can carry out respectively dielectric loss test and partial discharge test or
Person is carried out at the same time dielectric loss test and partial discharge test.
Specifically, above-mentioned shell structure includes the metal shell 120 being set on understructure 110, and is formed in metal
Closed cavity in shell 120.Moreover, above-mentioned dielectric loss sensing module 140 includes the dielectric loss sensor being set in the closed cavity
Main body 142, and connect with the dielectric loss sensor main body 142 and protrude from the dielectric loss sensor connector outside metal shell 120
144, and above-mentioned conductor rods 170 pass through the dielectric loss sensor main body 142.In measurement process, make 170 one end of conductor rods and quilt
Object connection is surveyed, dielectric loss, which may be implemented, using the dielectric loss sensor main body 142 being threaded through on conductor rods 170 detects, and utilizes protrusion
The dielectric loss data that dielectric loss sensor main body 142 measures can be exported in the dielectric loss sensor connector 144 outside metal shell 120.This
Outside, above-mentioned high frequency partial discharge sensing module 150 include be set to closed cavity in high frequency partial discharge sensor main body 152, and with this
High frequency partial discharge sensor main body 152 connects and protrudes from the high frequency partial discharge sensor connector 154 outside the metal shell 120, and
Above-mentioned conductor rods 170 pass through the high frequency partial discharge sensor main body 152.Similarly, in measurement process, make 170 one end of conductor rods with
Measured object connects, and high frequency partial discharge detection may be implemented using the high frequency partial discharge sensor main body 152 being threaded through on conductor rods 170,
And high frequency partial discharge sensor main body 152 can be measured using the high frequency partial discharge sensor connector 154 protruded from outside metal shell 120
High frequency partial discharge data output.In addition, above-mentioned superfrequency partial discharge sensing module 160 includes the superfrequency office being set in closed cavity
Sensor main body 162 is put, and is connect with the superfrequency partial discharge sensor main body 162 and protrudes from the spy outside metal shell 120
High frequency partial discharge sensor connector 164, and above-mentioned conductor rods 170 pass through the superfrequency partial discharge sensor main body 162.Similarly, exist
In measurement process, 170 one end of conductor rods is made to be connect with measured object, is sensed using the superfrequency partial discharge being threaded through on conductor rods 170
Superfrequency partial discharge detection may be implemented in device main body 162, and is connect using the superfrequency partial discharge sensor protruded from outside metal shell 120
First 164 can export the superfrequency partial discharge data that superfrequency partial discharge sensor main body 162 measures.
Moreover, above-mentioned dielectric loss sensor main body 142, high frequency partial discharge sensor main body 152, superfrequency partial discharge sensor main body
162 are mutually independently arranged, and three is arranged in the closed cavity of metal shell 120.Moreover, above-mentioned conductor rods 170 are distinguished
Across the dielectric loss sensor main body 142, high frequency partial discharge sensor main body 152, superfrequency partial discharge sensor main body 162, and one end
It protrudes from outside the metal shell 120 of shell structure.By by dielectric loss sensor main body 142, high frequency partial discharge sensor main body 152,
Superfrequency partial discharge sensor main body 162 is arranged independently of each other so that three sensor assemblies are mutual indepedent, can be according to user's
The arbitrary combination function module of demand becomes different products, even in use can also be convenient any if necessary
Remove certain module or increase certain module, with for meet user different needs (as only needed dielectric loss or partial discharge test function,
Or still dielectric loss and partial discharge test function are required for).In addition, by the way that hermetically sealed metal shell 120 is arranged, it can be to setting
Dielectric loss sensor main body 142, high frequency partial discharge sensor main body 152, superfrequency partial discharge in the closed cavity of the metal shell 120
Sensor main body 162 come realize physical protection and external interference signals shielding, keep the measurement of each sensor assembly more accurate
Reliably, it is not easy to be damaged by applied external force.
Further, in some embodiments, above-mentioned dielectric loss sensor main body 142, high frequency partial discharge sensor main body 152,
Superfrequency partial discharge sensor main body 162 can successively go here and there in the closed cavity of metal shell 120.I.e. above-mentioned dielectric loss sensor master
Body 142, high frequency partial discharge sensor main body 152, superfrequency partial discharge sensor main body 162 relatively can be set to closing chamber by head and the tail successively
In body, a conductor rods can be accordingly set, all the sensors module is concatenated, i.e., it is three sensor assemblies are first successively
Tail is accordingly connected on a conductor rods 170 and is sheathed in the closed cavity of metal shell 120.
In addition, in further embodiments, it also can be by above-mentioned dielectric loss sensor main body 142, high frequency partial discharge sensor main body
152, superfrequency partial discharge sensor main body 162 is set in the closed cavity side by side, and three conductor rods and three can accordingly be arranged
Sensor assembly corresponds, and also a guide rod can be respectively set at the both ends of three conductor rods and be attached, and is convenient for conductor
Bar both ends wear 120 both ends of metal shell.Three sensor assemblies can be disposed in parallel in metal shell 120, then profit
It is worn respectively with three branch conductors bars, the both ends of this three branch conductors bars is also made to merge together and be threaded through respectively
120 both ends of metal shell.In addition, also above two embodiment can be combined, i.e., by above-mentioned dielectric loss sensor main body 142,
High frequency partial discharge sensor main body 152, superfrequency partial discharge sensor main body 162 two sensor assembly strings set after again with another
Sensor assembly is arranged side by side.
Moreover, above-mentioned dielectric loss sensor connector 144, high frequency partial discharge sensor connector 154, superfrequency partial discharge sensor connector
164 can be sequentially arranged in 120 peripheral side of metal shell.Moreover, corresponding dielectric loss sensor connector 144, high frequency partial discharge sensor connect
First 154, superfrequency partial discharge sensor connector 164 can protrude from outside 120 side of metal shell, these three sensor connectors can be arranged
It is also dispersible to shift to install for a row, convenient for being communicatively coupled with test detection device.Further, above-mentioned dielectric loss sensing
Device connector 144 can be set as six core modular connections, above-mentioned high frequency partial discharge sensor connector 154 and superfrequency partial discharge sensor connector
164 may be configured as TNC (Total Numerical Control, all-digitized demodulator) modular connection.So that above-mentioned group
The dielectric loss sensing module 140 of intelligence sensor is closed by six core modular connection communication with the outside world, and high frequency partial discharge sensing module 150
Pass through TNC modular connection communication with the outside world with superfrequency partial discharge sensing module 160.
In addition, above-mentioned shell structure further includes the connector 122 of connect base structure 110 and metal shell 120, and connect
Part 222 passes through and fixes above-mentioned dielectric loss sensor main body 142, high frequency partial discharge sensor main body 152 and superfrequency partial discharge sensor
Main body 162.It can be by connector 122 by above-mentioned dielectric loss sensor main body 142, high frequency partial discharge sensor main body 152 and spy
High frequency partial discharge sensor main body 162 is fixed in the closed cavity of metal shell 120, makes dielectric loss sensor assembly 140, high frequency office
It puts sensor assembly 150 and 160 these three sensor assemblies of superfrequency partial discharge sensor assembly is reliablely and stablely connected to metal
On shell 120, the stability and reliability of whole part are improved.Specifically, connector 122 can be set to tie down screw,
It may be configured as the connection structures such as connection bolt.It, can be by four tie down screws by three sensor dies moreover, in the present embodiment
Block, metal shell 120 and understructure 110 connect into an entirety.
In addition, the metal shell 122 can be set as open column shape (such as cylinder, square column), closed cavity can also be corresponded to and is set as
Cylindrical cavities, convenient for accommodating sensor assembly.In addition, above-mentioned shell structure further includes being respectively arranged at columnar metal shell
First insulation sleeve 124 and the second insulation sleeve 126 at 120 both ends, and 170 one end of above-mentioned conductor rods is arranged in first insulation sleeve
In 124, the other end is arranged in second insulation sleeve 126.It, can by the way that upper first insulation sleeve, 124 and second insulation sleeve 126 is arranged
Realize the physical isolation to conductor rods 170 and each sensor function module.Moreover, it is also possible in above-mentioned dielectric loss sensor main body
142, it is respectively provided with insulation shell on high frequency partial discharge sensor main body 152 and superfrequency partial discharge sensor main body 162, and makes conductor rods
170 pass through the insulation shell, can further realize being isolated for conductor rods 170 and each sensor assembly.
In addition, as shown in Figures 3 to 6, the present invention also proposes a kind of capacitive high-voltage electrical equipment testing agency, including as above
The dielectric loss partial discharge sensor structure 100, and the end shield device that is detachably connected with the dielectric loss partial discharge sensor structure 100
200.By the dielectric loss partial discharge sensor structure 100, can pair capacitive high-voltage electrical equipment being connect with end shield device 200 carry out not
Power failure dielectric loss, partial discharge test.Moreover, the conductor rods 170 of above-mentioned dielectric loss partial discharge sensor structure 100 include protruding from metal shell
Conductor head 172 outside 120, and the end shield connector 174 that is detachably connected with end shield device 200.Moreover, the dielectric loss partial discharge passes
Sensor structure 100 further includes the ground connection cap 130 being removably connected on the conductor head 172, and the ground connection cap 130 and metal shell
120 contact and cover the conductor head 172.It is needing to carry out end shield device 300 and capacitive high-voltage electrical equipment connected to it
When test, the ground connection cap 130 on conductor head 172 can be removed and connect the wire clamp 10 of upper test equipment, so that it may to carry out capacitive
High-voltage electrical equipment carries out the test that has a power failure in delivery test, handing-over prophylactic tria or operation.Moreover, need not be to end shield device
200 and capacitive high-voltage electrical equipment connected to it when being tested, ground connection cap 130 can be kept to be connected and installed in conductor head
The state contacted on 172 and with metal shell 120 so that end shield device 200 keeps ground state.That is dielectric loss partial discharge sensor knot
Structure 100 is by being connected to the end shield device 200 of capacitive high-voltage electrical equipment, then the ground connection cap by being connected on conductor rods 170
130 compress metal shell 120 to realize capacitive high voltage capacitive electrical equipment end shield reliable ground.
Specifically, as shown in Figure 3 to Figure 4, above-mentioned end shield device 200 may include end shield pedestal 210, be set to the end shield pedestal
End shield guide rod 230 on 210, and it is connected to (240 one end of end shield lead of end shield lead 240 of 230 one end of end shield guide rod
It can be connect with capacitive high-voltage electrical equipment, and 240 other end of end shield lead can be connected to end shield guide rod by screw 250
On 230), and 230 other end of end shield guide rod is detachably connected with above-mentioned conductor rods 170.Utilize the end shield of end shield device 200
230 one end of guide rod and the end shield connector 174 of the conductor rods 170 of dielectric loss partial discharge sensor structure 100 are attached, to realize
The connection of end shield device 200 and dielectric loss partial discharge sensor structure 100, so as to by conductor rods 170 to end shield device 200 and
Capacitive high-voltage electrical equipment progress live testing (including delivery test, handing-over prophylactic tria are carried out to capacitive high-voltage electrical equipment
Or the test that has a power failure in operation, and carry out dielectric loss, partial discharge test).The dielectric loss partial discharge sensor structure 100 is mounted on capacitive high pressure
On electrical equipment, the end shield that is connect with capacitive high-voltage electrical equipment by the conductor rods 170 in dielectric loss partial discharge sensor structure 100
Guide rod 230 contacts the dielectric loss and Partial discharge signal that can obtain capacitive high-voltage electrical equipment, and user is defeated by partial discharge, dielectric loss measuring instrument signal
Enter the standard interface that line is inserted into the respective sensor module of dielectric loss partial discharge sensor structure 100, can realize and be situated between to equipment
Damage and (or) partial discharge test.Moreover, as shown in fig. 6, to carry out delivery test, handing-over prophylactic tria to capacitive high-voltage electrical equipment
Or the ground connection cap 130 on conductor rods 170 only need to be removed, the wire clamp 10 of tester is clamped when power failure test in operation
Capacitive high-voltage electrical equipment can be tested by conductor rods 170 and end shield guide rod 230, and be not required on conductor rods 170
Remove entire dielectric loss partial discharge sensor structure 100.In addition, in the present embodiment, above-mentioned conductor rods 170 and end shield guide rod 230
It may be configured as copper bar.
Moreover, above-mentioned end shield device 200 further includes being set on end shield pedestal 210 and enclosing around end shield guide rod 230
End shield connector sleeve 220, the end shield connector sleeve 220 are removably connected on the understructure 110 of dielectric loss partial discharge sensor structure.It is logical
Crossing makes end shield connector sleeve 220 be connect with understructure 110, and metal shell 120 may make to pass through end shield connector sleeve 220 and end shield bottom
Seat 210 connects, to realize that (ground connection cap 130 passes through conductor rods 170 and end shield guide rod to the ground connection cap 130 contacted with metal shell 120
230 connections) by the ground connection of end shield pedestal 210 (under normal circumstances, end shield pedestal 210 is ground connection in itself), it ensure that end shield fills
Set 200 reliable ground.Moreover, the end shield connector sleeve 220 can be connected and fixed by connecting bolt 222 with end shield pedestal 210.This
Outside, above-mentioned end shield device 200 may also include the end shield insulation sleeve 260 among the end shield connector sleeve 220, the end shield insulation sleeve
260 can be fixed on end shield connector sleeve 220 and end shield pedestal 210 by fixing piece.Moreover, above-mentioned end shield guide rod 230 is threaded through
In the end shield insulation sleeve 260, and 230 one end of end shield guide rod protrude from end shield insulation sleeve 260 it is outer and with conductor rods 170
End shield connector 174 is detachably connected.In the present embodiment, the end shield connector 174 and end shield guide rod of conductor rods 170 can be made
230 are threadedly coupled.In addition, above-mentioned end shield device 200 may also include the base flange for being connected to 210 bottom of end shield pedestal, pass through
End shield device 200 can be fixed on capacitive high-voltage electrical equipment by the base flange.
In addition, the understructure 110 of above-mentioned dielectric loss partial discharge sensor structure 100 includes the bottom being connect with metal shell 120
Seat main body, and the base plate through holes that are opened in the base body, and the end shield connector 174 and base plate through holes of conductor rods 170
Corresponding, 230 one end of end shield guide rod of above-mentioned end shield device 200 passes through the base plate through holes and detachably connects with end shield connector 174
It connects, to realize the connection of end shield device 200 and dielectric loss partial discharge sensor structure 100.Moreover, above-mentioned end shield connector sleeve 220 can connect
It is connected on the inside or outside of base body.In the present embodiment, which can be threaded connection with the pedestal in base body
Through hole also can be threaded connection in the peripheral side of base body so that metal shell 120 is connected by understructure 110 and end shield
Female connector 220 connect ground connection with end shield pedestal 210, but also end shield guide rod 230 and 170 stable connection of conductor rods are reliable.In addition, such as
It, can be by dielectric loss partial discharge sensor structure from end shield device 200 when without using dielectric loss partial discharge sensor structure 100 shown in Fig. 3
It disassembles, then ground connection cap 130 is installed on end shield guide rod 230 and ground connection cap 130 is made to keep connecing with end shield connector sleeve 220
It touches, end shield device 200 is made to keep ground state.As shown in figure 4, when needing to end shield device 200 and capacitive high-voltage electrical equipment
When directly being tested, ground connection cap 130 can be removed from end shield guide rod, the wire clamp of test equipment 10 is directly clamped in end shield
On guide rod 230.
In order to clearly explain how capacitive high-voltage electrical equipment is grounded and carries out dielectric loss and local discharge test, now with electricity
It is illustrated for current transformer.When the current transformer as capacitive high-voltage electrical equipment is directly connect with end shield device 200
When, 230 bottom end of end shield guide rod of end shield device 200 is equipped with internal thread, top is equipped with external screw thread, will be with using a screw 250
The connection of end shield lead 240 of current transformer connection is fixed in the bottom end of end shield guide rod 230 to obtain current transformer end shield electric current
Signal.As shown in figure 4, when carrying out dielectric loss, local discharge test to current transformer, and mutual inductor is carried out to current transformer and is gone out
When factory's experiment, commissioning test and interruption maintenance are tested, only the input line of tester need to be clipped in end shield by a wire clamp 10 and led
The top of bar 230.Since current transformer will ensure moment reliable ground in the process of running, it is therefore desirable to ensure end shield
200 reliable ground of device, so that it may design an end shield connector sleeve 220, and be fixed on the end of ground connection by connecting bolt 222
Shield on pedestal 210, and cap 130 is grounded by the top threaded engagement connection of end shield connector sleeve 220 and end shield guide rod 230 by one
Together, realize 200 reliable ground of end shield device (as shown in figure 3).Therefore, unless it is necessary to by end shield device 200 to electric current
Mutual inductor is done experiment, and ground connection cap 130 is always mounted on end shield connector sleeve 220 and end shield guide rod 230, Panasonic's ground connection when experiment
Cap 130 loads onto the ground connection cap again after experiment.
When current transformer is connect by end shield device 200 with dielectric loss partial discharge sensor structure 100, end shield dress is used
Earthing mode is set, allows the conductor rods 170 of dielectric loss partial discharge sensor structure to pass through entire sensor structure and extend exposing sensing
Outside the top of device structure.As shown in figure 5, and the bottom end (i.e. end shield connector 174) of conductor rods 170 using internal thread structure,
Top (i.e. conductor head 172) uses external thread structure, bottom end end shield connector 174 to be obtained with 230 threaded engagement connection of end shield guide rod
Current transformer end shield current signal is obtained, top conductor head 172 screws with ground connection cap 130 and connect and be pressed on metal shell 120
Upper 200 reliable ground of realization end shield device.When charging dielectric loss, partial discharge test, the corresponding lead of external tester need to only be distinguished
The dielectric loss sensor assembly 140, high frequency partial discharge sensor assembly 150, superfrequency partial discharge for being connected to dielectric loss partial discharge sensor structure pass
Signal output connector (i.e. dielectric loss sensor connector 144, high frequency partial discharge sensor connector 154, the superfrequency office of sensor module 160
Put sensor connector 164) on；As shown in fig. 6, being carried out when doing power failure dielectric loss, local discharge test, and to current transformer
When mutual inductor delivery test, commissioning test and interruption maintenance are tested, it need to only be connect what is installed on the conductor head 172 of conductor rods 170
130 Panasonics of Di Mao, external tester input line are clipped in by a wire clamp 10 on the conductor head 172 of conductor rods 170.Experiment
It finishes, removes down the wire clamp 10, ground connection cap 130 is installed on conductor head 172 again.So unless doing power failure experiment, conductor head
What the ground connection cap 130 installed on 172 was always contacted with the metal shell 120 of dielectric loss partial discharge sensor structure so that charging operation
When 200 moment of end shield device be in ground state.
As shown from the above technical solution, dielectric loss partial discharge sensor structure proposed by the present invention is a kind of on-line monitoring (or band
Electrical testing) the matching used dielectric loss partial discharge combination intelligent sensor free of demolition of capacitive high-voltage electrical equipment, the sensor structure by
Three or the separate functional blocks of arbitrary combination are needed to be composed according to user, it, only need to be by tester signal when live testing
Input line is connected to respective sensor connector and can carry out；In carrying out delivery test, handing-over prophylactic tria and running when power failure test,
The ground connection cap screwed on conductor rods only need to be backed out, it is entire woth no need to remove by tester signal wire clamp on conductor rods
Sensor.Moreover, user is in capacitive high-voltage electrical equipment During Process of Long-term Operation, it can be convenient and efficient by backing out tie down screw
Ground carries out replacement or the increase and decrease any of which sensor assembly of entire sensor.In addition, user can also be directly by the dielectric loss office
It puts sensor structure to back out from end shield device, and ground connection cap is loaded onto on the end shield guide rod of former end shield device, you can by equipment
Revert to traditional capacitive high-voltage electrical equipment.Dielectric loss partial discharge sensor structure i.e. proposed by the present invention is, it can be achieved that capacitive high-voltage electricity
Device equipment, which does not have a power failure, carries out dielectric loss, partial discharge test, realizes the manufacture of capacitive high-voltage electrical equipment, joins prevent and have a power failure experiment and band
Electric test mode it is unified, it can be achieved that end shield reliable ground, it can be achieved that when sensor does not need safe and convenient removal be reduced to tradition
Capacitive high-voltage electrical equipment structure.
In addition it is also necessary to understand, in the above-described embodiments, term "lower", "upper", "front", "rear", "left", "right",
"inner", "outside", "top", "bottom", " side ", " other side ", " one end ", " other end ", etc. indicated by position relationship be based on
Position relationship shown in the drawings；The terms such as " first ", " second " are to distinguish different structure members.These terms are only
Convenient for the description present invention and simplify description, is not considered as limiting the invention.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of dielectric loss partial discharge sensor structure, which is characterized in that including understructure, the shell being connected on the understructure
Body structure, independently of each other be set to the shell structure in dielectric loss sensing module, high frequency partial discharge sensing module, superfrequency partial discharge
Sensing module, and the conductor rods that are arranged in the shell structure, and the conductor rods pass through the dielectric loss sensing module, institute
State high frequency partial discharge sensing module, the superfrequency partial discharge sensing module；
The shell structure includes the metal shell being set on the understructure, and the envelope being formed in the metal shell
Closed chamber body；
The dielectric loss sensing module includes the dielectric loss sensor main body being set in the closed cavity, and is sensed with the dielectric loss
Device main body connects and protrudes from the dielectric loss sensor connector outside the metal shell；
The high frequency partial discharge sensing module include be set to the closed cavity in high frequency partial discharge sensor main body, and with it is described
High frequency partial discharge sensor main body connects and protrudes from the high frequency partial discharge sensor connector outside the metal shell；
The superfrequency partial discharge sensing module includes the superfrequency partial discharge sensor main body being set in the closed cavity, Yi Jiyu
The superfrequency partial discharge sensor main body connects and protrudes from the superfrequency partial discharge sensor connector outside the metal shell；Institute
Damage sensor main body, the high frequency partial discharge sensor main body, the superfrequency partial discharge sensor main body is given an account of mutually independently to set
It sets, and the conductor rods are each passed through the dielectric loss sensor main body, the high frequency partial discharge sensor main body and the superfrequency
Partial discharge sensor main body and one end protrude from outside the shell structure.
2. dielectric loss partial discharge sensor structure according to claim 1, which is characterized in that the dielectric loss sensor main body, institute
State high frequency partial discharge sensor main body, the superfrequency partial discharge sensor main body is gone here and there successively in the closed cavity, and described
Dielectric loss sensor connector, the high frequency partial discharge sensor connector, the superfrequency partial discharge sensor connector are sequentially arranged in the gold
Belong to shell peripheral side.
3. dielectric loss partial discharge sensor structure according to claim 1 or 2, which is characterized in that the dielectric loss sensor connector
Six core modular connections are set as, the high frequency partial discharge sensor connector and the superfrequency partial discharge sensor connector are disposed as TNC
Modular connection.
4. dielectric loss partial discharge sensor structure according to claim 1 or 2, which is characterized in that the shell structure further includes
The connector of the understructure and the metal shell is connected, and the connector passes through and fixes the dielectric loss sensor master
Body, the high frequency partial discharge sensor main body and the superfrequency partial discharge sensor main body.
5. dielectric loss partial discharge sensor structure according to claim 1 or 2, which is characterized in that the shell structure further includes
It is respectively arranged at first insulation sleeve and the second insulation sleeve at the metal shell both ends, described conductor rods one end is arranged in described
One insulation sleeve, the other end are arranged in second insulation sleeve.
6. dielectric loss partial discharge sensor structure according to claim 1, which is characterized in that the conductor rods include protruding from institute
The conductor head outside metal shell is stated, the dielectric loss partial discharge sensor structure further includes being removably connected to connecing on the conductor head
Ground cap, and the ground connection cap contacts with metal shell and covers the conductor head.
7. a kind of capacitive high-voltage electrical equipment testing agency, which is characterized in that including as claimed in any one of claims 1 to 6
Dielectric loss partial discharge sensor structure, and the end shield device that is detachably connected with the dielectric loss partial discharge sensor structure.
8. capacitive high-voltage electrical equipment according to claim 7 testing agency, which is characterized in that the end shield device includes
End shield pedestal, the end shield guide rod being set on the end shield pedestal, and it is connected to the end shield lead of the end shield guide rod, and
The end shield guide rod other end is detachably connected with the conductor rods.
9. capacitive high-voltage electrical equipment according to claim 8 testing agency, which is characterized in that the understructure includes
The base body being connect with the metal shell, and the base plate through holes that are opened in the base body, the conductor rods are also
Including end shield connector corresponding with the base plate through holes, the end shield guide rod pass through the base plate through holes and with the end
Screen connector is detachably connected.
10. capacitive high-voltage electrical equipment according to claim 9 testing agency, which is characterized in that the end shield device is also
Include on the end shield pedestal and enclosing the end shield connector sleeve around the end shield guide rod, the end shield connector sleeve can
Dismantling connection is in the base body.
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| CN201810601087.6A CN108710005B (en) | 2018-06-12 | 2018-06-12 | Dielectric loss partial discharge sensor structure and capacitive high-voltage electrical equipment detection mechanism |
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| CN201810601087.6A CN108710005B (en) | 2018-06-12 | 2018-06-12 | Dielectric loss partial discharge sensor structure and capacitive high-voltage electrical equipment detection mechanism |
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| CN108710005B (en) | 2020-11-03 |
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