CN116148606B - GIS (gas insulated switchgear) capacitor partial discharge testing tool, partial discharge testing device and testing method - Google Patents
GIS (gas insulated switchgear) capacitor partial discharge testing tool, partial discharge testing device and testing method Download PDFInfo
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- CN116148606B CN116148606B CN202211549777.4A CN202211549777A CN116148606B CN 116148606 B CN116148606 B CN 116148606B CN 202211549777 A CN202211549777 A CN 202211549777A CN 116148606 B CN116148606 B CN 116148606B
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- 238000012360 testing method Methods 0.000 title claims abstract description 150
- 239000003990 capacitor Substances 0.000 title claims abstract description 129
- 239000011810 insulating material Substances 0.000 claims abstract description 10
- 230000008054 signal transmission Effects 0.000 claims description 21
- 238000009434 installation Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 4
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- 230000007704 transition Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 2
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- 230000005684 electric field Effects 0.000 description 10
- 238000001514 detection method Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
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- 230000015556 catabolic process Effects 0.000 description 4
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- 238000011835 investigation Methods 0.000 description 4
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- 239000011229 interlayer Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
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- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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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
- G01R31/1227—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 of components, parts or materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The invention provides a GIS (gas insulated switchgear) capacitor partial discharge testing tool, a testing device and a testing method, which relate to the technical field of GIS capacitor partial discharge testing and adopt the following scheme: including removing the frame, remove the frame lower part and be provided with the gyro wheel, remove the one end of frame and be provided with the pushing hands, remove the frame upper end level and be provided with the base, the one end of base is provided with high-voltage shield cover, is provided with the conducting rod in the high-voltage shield cover, the conducting rod sets up on the conducting plate, the conducting plate can be connected and electrically conduct with the one end of condenser, the other end of base is movably provided with the low-voltage shield cover, be provided with the mounting disc in the low-voltage shield cover, the mounting disc adopts insulating material, the mounting disc is used for installing the condenser. The invention can improve the test accuracy and greatly reduce the occurrence of partial discharge test misjudgment caused by the fact that bubbles cannot rise to the top of the capacitor.
Description
Technical Field
The invention relates to the technical field of GIS (gas insulated switchgear) capacitor partial discharge testing, in particular to a GIS capacitor partial discharge testing tool, a GIS capacitor partial discharge testing device and a GIS capacitor partial discharge testing method.
Background
The GIS equipment is a complete set of switch equipment which is formed by sealing elements such as a circuit breaker, an isolating switch, a grounding switch, a current transformer, a voltage transformer, a lightning arrester, a bus, a wire inlet and outlet sleeve or a cable terminal and the like in a grounding metal shell in a combined manner and charging SF6 gas with certain pressure as an insulating medium and an arc extinguishing medium; if air is doped when the liquid oil is poured into the capacitor, bubbles exist, an interlayer medium is formed, the electric field intensity of the interlayer medium is inversely proportional to the dielectric coefficient, and the bubbles are free firstly due to small dielectric coefficient and large electric field intensity, so that the whole insulation intensity is reduced, the performance of the whole high-voltage insulating material is damaged, the capacitor product is unqualified, the GIS equipment is electrified to operate, the electrified equipment is damaged, and the serious harm is caused;
in the prior art, the partial discharge test comprises the following steps that firstly, a capacitor to be tested is installed in a test tank, the test tank is vacuumized, SF6 gas is introduced, high-voltage electricity is introduced for testing, partial discharge conditions of the capacitor to be tested are detected, when the partial discharge test is carried out on the capacitor, the capacitor to be tested is in a vertical state for convenience in installation, but in the state, bubbles doped into liquid oil are not easy to rise to the top of the capacitor, most of the bubbles are hidden at the bottom of the liquid oil, and a grading ring is arranged at the bottom of the capacitor, so that the effect of grading is achieved around the capacitor, voltage generated by the bubbles cannot be detected, the partial discharge test of the capacitor is qualified, the partial discharge test of the capacitor can be successfully carried out through a factory electrical test, GIS equipment is electrified and is caused to run, and great economic loss is caused.
Therefore, aiming at the current situation existing in the prior art, the development of a GIS capacitor partial discharge testing tool, a partial discharge testing device and a testing method is an urgent problem to be solved.
Disclosure of Invention
In order to overcome the defect that in the prior art, partial discharge test is misjudged due to the fact that bubbles are not easy to rise to the top of a capacitor, the invention provides a GIS capacitor partial discharge test tool, a partial discharge test device and a test method, which can improve test accuracy and greatly reduce the occurrence of misjudgment of partial discharge test caused by the fact that bubbles cannot rise to the top of the capacitor.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a GIS electric capacity ware partial discharge test fixture, includes removes the frame, it is provided with the gyro wheel to remove the frame lower part, the one end of removing the frame is provided with the pushing hands, it is provided with the base to remove frame upper end level, the one end of base is provided with high-voltage shield, be provided with the conducting rod in the high-voltage shield, the conducting rod sets up on the conducting plate, the conducting plate can be connected and electrically conducts with the one end of condenser, the other end of base is provided with the low-voltage shield movably, be provided with the mounting disc in the low-voltage shield, the mounting disc adopts insulating material, the mounting disc is used for installing the condenser. Through the synergism of the high-voltage shielding cover, the conductive disc, the low-voltage shielding cover and the mounting disc, the horizontal mounting of the capacitor can be realized, the rising of doped bubbles in liquid oil is facilitated, the existence of bubbles is conveniently detected, and the accuracy of partial discharge testing is improved.
Further, the first support columns are symmetrically arranged at the lower ends of the high-voltage shielding covers, the first support columns are made of insulating materials, the lower ends of the first support columns are arranged on the base, the second support columns are symmetrically arranged at the lower ends of the low-voltage shielding covers, the second support columns are made of insulating materials, the lower ends of the second support columns are movably arranged on guide rails, the second support columns can be locked on the guide rails, and the guide rails are arranged at one ends of the base. The guide rail is convenient for the movement of the low-voltage shielding cover, so that the capacitor to be measured can be conveniently installed, meanwhile, the guide rail can be suitable for capacitors with different lengths, and the application range of the tool is improved.
Further, the base is of an arc-shaped structure, transition arcs are arranged on two edges of the base along the length direction of the base, the middle of the base is connected with the movable frame, and the first support column and the second support column incline towards the corresponding edges of the base in the length direction. Through the voltage equalizing effect of arc base, can shield the voltage that flows through this frock and produce the electric field, prevent that the movable rack and other parts surface below the base from can causing the sudden change to this electric field, lead to this place field strength grow, and then produce partial discharge, even flashover and breakdown to the condenser sample, cause the incident.
Further, the one end that the condenser was kept away from to the high voltage shield cover is provided with voltage-sharing portion one, voltage-sharing portion one is the dome structure that the centre was provided with the through-hole, voltage-sharing portion is to keeping away from the direction protrusion of condenser, the one end that the low voltage shield cover is close to the condenser sets up, the conducting rod passes through the through-hole stretches out the high voltage shield cover has voltage-sharing portion two, voltage-sharing portion two is the dome structure that the centre was provided with the through-hole, voltage-sharing portion is to being close to the direction protrusion of condenser. Through the voltage-sharing effect of voltage-sharing portion one and voltage-sharing portion two, can further produce the electric field to the voltage that this frock flows through and shield, be favorable to preventing that high pressure shield and the part outside the low pressure shield from producing partial discharge, even flashover and puncture, cause the incident.
Furthermore, the upper end and the lower end of the first support column and the second support column are respectively provided with an equalizing ring. The electric field generated by the voltage flowing through the tool can be further shielded.
Further, the conductive plate and the corresponding position of the mounting plate are detachably provided with a plurality of conductive bolts, and the conductive bolts can be connected with the corresponding capacitors. The capacitors to be detected can be installed and detected at one time by arranging the installation positions of the capacitors, so that the factory detection efficiency is improved.
Further, one end of the mounting plate far away from the capacitor is provided with a plurality of wiring terminals, the wiring terminals are electrically connected with the conductive bolts on the mounting plate, the wiring terminals are inserted with signal transmission lines, and the signal transmission lines are used for independently transmitting collected electric signals so as to perform partial discharge testing. The partial discharge test is independently carried out on the capacitor through the wiring terminal and the signal transmission line, meanwhile, the parallel capacitor is prevented from being subjected to signal coupling, the operation is convenient, and the investigation time is shortened.
The invention also provides a GIS capacitor partial discharge testing device, which comprises a testing tank, wherein the testing tank is supported on the ground, one end of the testing tank is provided with a basin-shaped rim, the basin-shaped rim is electrically connected with a high-voltage power supply, the GIS capacitor partial discharge testing device further comprises the GIS capacitor partial discharge testing tool, the basin-shaped rim can extend into the first voltage equalizing part, the testing tank is provided with an electrically connected display and a partial discharge testing module, the inner side of the partial discharge testing module is provided with a plurality of sockets, signal transmission lines can be electrically connected with the corresponding sockets, the partial discharge testing module is used for judging whether partial discharge exists in the corresponding capacitor to be tested, and the display can display the discharge condition of the corresponding socket. Through the cooperation of display, partial discharge test module and signal transmission line, realize simultaneously and independently testing a plurality of condensers, further improve test efficiency, improved the test efficiency that leaves the factory.
Further, be provided with interior track on the experimental jar inner wall, remove the frame can be in interior track is gone up and is removed, still includes shallow and slide rail, shallow upper portion is provided with outer guide rail, remove the frame can be in outer track is gone up and is removed, the slide rail sets up subaerial, the shallow can be in remove on the slide rail, works as the shallow is close to when experimental jar, remove the frame can be followed outer track removes to interior track is gone up. Through the cooperation of shallow, slide rail, outer guide rail and interior track, be convenient for fix the GIS condenser partial discharge test fixture of installing the capacitor that awaits measuring inside the test tank, improved the efficiency of installation frock.
The invention also provides a GIS capacitor testing method, which adopts the GIS capacitor partial discharge testing device and comprises the following steps:
s01: a plurality of capacitors to be tested are arranged on the GIS capacitor partial discharge test fixture one by one;
s02: after the installation is finished, the GIS capacitor partial discharge testing tool is moved to the inside of the test tank through the cart until the conducting rod is spliced with the basin-shaped rim;
s03: electrically connecting the signal transmission line with the partial discharge test module;
s04: closing the tank door of the test tank, and performing vacuumizing and inflating operations;
s05: turning on a high-voltage power supply;
s06: and the partial discharge test module judges the partial discharge condition of each capacitor to be tested and displays the partial discharge condition through the display.
From the above technical scheme, the invention has the following advantages:
the scheme provides a GIS capacitor partial discharge testing tool, a partial discharge testing device and a testing method, wherein the horizontal installation of a capacitor can be realized through the synergistic effect of a high-voltage shielding cover, a conducting disc, a low-voltage shielding cover and an installation disc, so that the rising of doped bubbles in liquid oil is facilitated, the existence of bubbles is conveniently detected, and the accuracy of partial discharge testing is improved; the guide rail is convenient for the movement of the low-voltage shielding cover, so that the capacitor to be tested can be conveniently installed, meanwhile, the tool can be suitable for capacitors with different lengths, and the application range of the tool is enlarged; through the voltage equalizing effect of the arc-shaped base, the first voltage equalizing part, the second voltage equalizing part and the equalizing ring, the electric field generated by the voltage flowing through the tool can be shielded, and safety accidents caused by electrification of equipment and even electric breakdown are prevented; the plurality of capacitors can be installed and detected at one time by arranging the installation positions of the plurality of capacitors, so that the factory detection efficiency is improved; the wiring terminal and the signal transmission line are convenient for independently carrying out partial discharge test on the capacitors, meanwhile, the parallel capacitors are prevented from being subjected to signal coupling, the operation is convenient, and the investigation time is shortened; through the cooperation of shallow, slide rail, outer guide rail and interior track, be convenient for fix the GIS condenser partial discharge test fixture that installs the capacitor that awaits measuring inside the test tank.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 3 is a schematic diagram of a third embodiment of the present invention.
Fig. 4 is a schematic diagram of an assembly structure of one embodiment of the present invention and a plurality of capacitors to be tested.
Fig. 5 is a schematic diagram of an assembly structure of a second embodiment of the present invention and a plurality of capacitors to be tested.
Fig. 6 is a schematic structural diagram of a third embodiment of the present invention.
In the figure, 1, a high-voltage shielding case, 2, a low-voltage shielding case, 3, a base, 4, a second support column, 5, a conducting rod, 6, a guide rail, 7, a movable frame, 8, a capacitor to be tested, 9, a conducting bolt, 10, a connecting terminal, 11, a signal transmission line, 12, a conducting disc, 13, a mounting disc, 14, a test tank, 15, a cart, 16, an inner rail, 17, a slide rail, 18, a workbench, 19, a first support column, 20, a equalizing ring, 21, a first equalizing part, 22 and a second equalizing part.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the invention are intended to be within the scope of the patent protection.
Detailed description of the preferred embodiments
As shown in fig. 1 to 4, this embodiment provides a GIS capacitor partial discharge test fixture, including a movable frame 7, a roller is provided at the lower part of the movable frame 7, one end of the movable frame 7 is provided with a pushing handle, and is characterized in that the upper end of the movable frame 7 is horizontally provided with a base 3, one end of the base 3 is provided with a high-voltage shielding cover 1, the lower end of the high-voltage shielding cover 1 is symmetrically provided with two first support columns 19, the first support columns 19 are made of insulating materials, the lower ends of the first support columns 19 are arranged on the base 3, a conductive rod 5 is arranged in the high-voltage shielding cover 1, the conductive rod 5 is arranged on a conductive disc 12, a conductive bolt 9 is arranged on the conductive disc 12, the conductive bolt 9 can be connected with one end of a capacitor and is conductive, the other end of the base 3 can be provided with a guide rail 6, a slider is arranged on the guide rail 6, the lower end of the low-voltage shielding cover 2 is symmetrically provided with two second support columns 4, the second support columns 4 are made of insulating materials, the lower ends of the support columns 4 are arranged on the slider, the guide rail 6 and the slider are correspondingly provided with pin holes, pins are arranged in the pin holes, the second support columns 4 can be locked on the guide rail 6, the guide rail 6 can be arranged on the guide rail 6, the guide rail 6 is arranged on the guide rail 3, and the conductive disc is correspondingly arranged on the low-voltage shielding cover 3, and 13 is arranged on the conductive disc 13, and is correspondingly arranged on the conductive disc 13, and is mounted on the conductive disc 13; through the synergism of the high-voltage shielding cover 1, the conductive plate 12, the low-voltage shielding cover 2 and the mounting plate 13, the horizontal installation of the capacitor 8 to be tested can be realized, the rising of the doped bubbles in the liquid oil is facilitated, the existence of the bubbles is conveniently detected, and the accuracy of the partial discharge test is improved.
As shown in fig. 3 and 4, in order to be able to shield the electric field generated by the voltage flowing through the tool, prevent that other parts from suddenly changing the electric field, leading to the field intensity of the place becoming larger, leading to the electrification of the equipment, even produce electric breakdown and cause safety accident, the base 3 is in an arc structure, two edges of the base 3 along its length direction are provided with transition arcs, the middle part of the base 3 is connected with the movable frame 7 through bolts, the support column one 19 and the support column two 4 are inclined to the corresponding edges of the base 3 length direction, in this embodiment, the included angle between the support column one 19 and the support column two 4 and the vertical direction is 30 °, the end of the high-voltage shielding cover 1 far away from the capacitor is provided with a voltage equalizing part one 21, the voltage conducting rod 5 extends out of the high-voltage shielding cover 1 through the through hole, the voltage equalizing part one 21 protrudes towards the direction far away from the capacitor, one end of the low-voltage shielding cover 2 near the capacitor is provided with a dome structure with a second 22, the middle part two 22 protrudes towards the direction near the capacitor, and the upper end and lower end of the support column one 19 and the support column two 4 are provided with a voltage equalizing ring 20.
As shown in fig. 3, in order to improve the efficiency of factory test, guarantee that once lead to can be simultaneously to conducting plate 12 and mounting disc 13 corresponding position all detachably be provided with a plurality of conducting bolts 9, conducting bolt 9 can be connected with corresponding condenser, the quantity of conducting bolt 9 is the surplus capacitor 8 quantity that awaits measuring that can install, set up like this and can guarantee to carry out rational arrangement according to its thickness when installing the electric capacity, improve the utilization ratio to this frock, in this embodiment, conducting bolt 9 at both ends are provided with 9 respectively, can install 6 capacitors 8 that await measuring.
When the device is used, all the conductive bolts 9 on the mounting plate 13 are connected in parallel through wires and then grounded, then a capacitor is connected in parallel at a high-voltage end to play a role of coupling signals, the capacitor is connected to a partial discharge detection device for partial discharge detection, and when the partial discharge detection device detects that partial discharge exists, the capacitors are checked one by one according to the process of air return, disassembly, reloading, vacuumizing and inflating, and only one capacitor is left on the device after disassembly each time.
Detailed description of the preferred embodiments
As shown in fig. 5, this embodiment provides a GIS capacitor testing tool, which has substantially the same structure as the first embodiment, and is different in that: the end of the mounting plate 13 far away from the capacitor is provided with a plurality of wiring terminals 10, the wiring terminals 10 are electrically connected with the conductive bolts 9 on the mounting plate 13, the wiring terminals 10 are inserted with signal transmission lines 11, and the signal transmission lines 11 are used for independently transmitting electric signals so as to facilitate the partial discharge test (partial discharge test) of an operator; through the multiple signal transmission lines 11 in the specific embodiment, the charging condition of the corresponding capacitor to be tested is converted into the electric signal to be independently output, so that an operator can independently and electrically test each capacitor 8 to be tested, unqualified capacitors are directly determined, the checking time is reduced, the factory detection efficiency is improved, meanwhile, additional capacitors are not required to be connected in parallel at a high-voltage end, the capacitor to be tested can play a signal coupling role, and the parts for carrying out partial discharge testing are reduced.
Detailed description of the preferred embodiments
As shown in fig. 6, the present embodiment provides a GIS capacitor partial discharge test device based on the second embodiment, including a test tank 14 and a GIS capacitor partial discharge test tool in the second embodiment, where the test tank 14 is supported on the ground, a vacuum valve and an inflation valve are disposed on the test tank 14, and a density controller is also disposed on the test tank 14, one end of the test tank 14 is provided with a basin-shaped rim, a connection terminal is disposed on the basin-shaped rim, two ends of the connection terminal are respectively electrically connected with a high-voltage power supply and a conductive rod 5, a head of the basin-shaped rim can extend into the first voltage equalizing part, a workbench 18 is disposed on the test tank 14, the workbench 18 includes a display and a partial discharge test module that are electrically connected, a plurality of sockets are disposed on the inner side of the partial discharge test module, the sockets are all provided with numbers, the signal transmission line 11 can be electrically connected with corresponding sockets, the partial discharge test module is used for judging whether the corresponding to-tested capacitor 8 has partial discharge, the display can display the discharge condition of the corresponding socket, the partial discharge test module can simultaneously perform the partial discharge test on a plurality of sets of capacitors 8, and can display the test result to the display to the dynamic partial discharge test result in a real-time manner in which can be implemented in a test mode of the pd (pd) of the test module, and the dynamic partial discharge test mode is also capable of being implemented in a dynamic mode, and a real-time mode of being represented by the test mode in a test mode, and a test mode of the test mode; through the cooperation of display, partial discharge test module and signal transmission line 11, can carry out independent partial discharge test simultaneously to every capacitor that awaits measuring, the operator of being convenient for directly judges unqualified capacitor that awaits measuring, reduces the investigation time, improves the test efficiency that leaves the factory.
For the convenience install a plurality of capacitors 8 that await measuring and frock at test tank 14, be provided with interior track 16 on the inner wall of interior test tank 14, remove frame 7 can remove on interior track 16, still include shallow 15 and slide rail 17, shallow 15 upper portion is provided with outer guide rail 6, remove frame 7 can remove on outer track, slide rail 17 sets up subaerial, shallow 15 can remove on slide rail 17, when shallow 15 is close to test tank 14, remove frame 7 can remove to on the interior track 16 along outer track.
Detailed description of the preferred embodiments
The embodiment provides a GIS capacitor testing method, which adopts the GIS capacitor partial discharge testing device in the third embodiment, and comprises the following steps:
s01: a plurality of capacitors to be tested are arranged on a GIS capacitor partial discharge test fixture one by one;
s02: after the installation is finished, the GIS capacitor partial discharge testing tool is moved to the inside of the test tank through the cart until the conducting rod is spliced with the basin-type rim;
s03: electrically connecting the signal transmission line with the partial discharge test module;
s04: closing a tank door of the test tank, and performing vacuumizing and inflating operations;
s05: turning on a high-voltage power supply;
s06: the partial discharge test module judges the partial discharge condition of each capacitor to be tested and displays the partial discharge condition through the display.
When the capacitor to be tested is installed in S01, firstly, one end of the capacitor to be tested is connected with a conductive disc through a conductive bolt, then, two support columns II are unlocked, the other end of the capacitor to be tested is installed on a mounting disc through a conductive bolt, in S03, only a signal transmission line 11 corresponding to the capacitor 8 to be tested is connected with a corresponding socket, and the signal transmission line 11 without the capacitor to be tested is not connected with the socket; by the method, partial discharge tests can be simultaneously and independently carried out on a plurality of capacitors 8 to be tested, and judging accuracy and testing efficiency are improved.
The following beneficial effects can be seen from the specific embodiment:
1. through the synergistic effect of the high-voltage shielding cover 1, the conductive disc 12, the low-voltage shielding cover 2 and the mounting disc 13, the horizontal mounting of the capacitor can be realized, the rising of the doped bubbles in the liquid oil is facilitated, the existence of the bubbles is conveniently detected, and the accuracy of the partial discharge test is improved;
2. the guide rail is convenient for the movement of the low-voltage shielding case 2, the capacitor 8 to be measured is convenient to install, meanwhile, the tool can adapt to the use of capacitors with different lengths, and the application range of the tool is enlarged;
3. the arc-shaped base 3, the first pressure equalizing part 21, the second pressure equalizing part 22 and the pressure equalizing ring 20 can shield an electric field generated by the voltage flowing through the tool, so that equipment is prevented from being electrified and electric breakdown is prevented;
4. a plurality of capacitors 8 to be tested are installed by arranging a plurality of conductive bolts 9, so that the factory detection efficiency is improved;
5. the corresponding charged condition of the capacitor 8 to be tested after being electrified by high voltage can be changed into an electric signal to be independently output through the wiring terminal 10 and the signal transmission line 11, so that the capacitor can be conveniently and independently subjected to partial discharge test, meanwhile, the parallel capacitor is prevented from being subjected to signal coupling, the operation is convenient, and the investigation time is shortened;
6. the GIS capacitor partial discharge test fixture with the capacitor to be tested is conveniently fixed in the test tank 14 through the cooperation of the trolley 15, the sliding rail 17, the outer guide rail and the inner rail 16;
7. the partial discharge test module and the display can test a plurality of capacitors to be tested at the same time, so that the test efficiency is further improved.
The terms "upper," "lower," "outboard," "inboard," and the like in the description and in the claims of the invention and in the above figures, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a GIS electric capacity ware partial discharge test fixture, including removing frame (7), remove frame (7) lower part is provided with the gyro wheel, the one end of removing frame (7) is provided with the pushing hands, a serial communication port, remove frame (7) upper end level and be provided with base (3), the one end of base (3) is provided with high-voltage shield cover (1), be provided with conducting rod (5) in high-voltage shield cover (1), conducting rod (5) set up on conducting plate (12), conducting plate (12) can be connected and electrically conduct with the one end of condenser, the other end of base (3) is movably provided with low-voltage shield cover (2), be provided with mounting disc (13) in low-voltage shield cover (2), mounting disc (13) adopt insulating material, mounting disc (13) are used for installing the condenser, can realize the horizontal installation of capacitor (8) that await measuring through high-voltage shield cover (1), conducting plate (12), low-voltage shield cover (2) and mounting disc (13).
2. The GIS capacitor partial discharge test fixture according to claim 1, wherein two first support columns (19) are symmetrically arranged at the lower end of the high-voltage shielding case (1), the first support columns (19) are made of insulating materials, the lower ends of the first support columns (19) are arranged on the base (3), two second support columns (4) are symmetrically arranged at the lower end of the low-voltage shielding case (2), the second support columns (4) are made of insulating materials, the lower ends of the second support columns (4) are movably arranged on the guide rail (6), the second support columns (4) can be locked on the guide rail (6), and the guide rail (6) is arranged at one end of the base (3).
3. The GIS capacitor partial discharge test fixture according to claim 2, wherein the base (3) is of an arc-shaped structure, transition arcs are arranged on two edges of the base (3) along the length direction of the base, the middle of the base (3) is connected with the movable frame (7), and the first support column (19) and the second support column (4) are inclined to the edges of the corresponding base (3) along the length direction.
4. A GIS capacitor partial discharge test fixture as claimed in claim 3, characterized in that the end of the high voltage shield (1) far away from the capacitor is provided with a first voltage-equalizing part (21), the first voltage-equalizing part (21) is a dome structure with a through hole in the middle, the conducting rod (5) extends out of the high voltage shield (1) through the through hole, the first voltage-equalizing part (21) protrudes towards the direction far away from the capacitor, the end of the low voltage shield (2) near the capacitor is provided with a second voltage-equalizing part (22), the second voltage-equalizing part (22) is a dome structure with a through hole in the middle, and the second voltage-equalizing part (22) protrudes towards the direction near the capacitor.
5. The GIS capacitor partial discharge test fixture according to claim 4, wherein equalizing rings (20) are arranged at the upper end and the lower end of the first support column (19) and the second support column (4).
6. The GIS capacitor partial discharge test fixture according to claim 2, wherein a plurality of conductive bolts (9) are detachably arranged at corresponding positions of the conductive disc (12) and the mounting disc (13), and the conductive bolts (9) can be connected with corresponding capacitors.
7. The GIS capacitor partial discharge test fixture according to claim 6, wherein one end of the mounting plate (13) far away from the capacitor is provided with a plurality of connection terminals (10), the connection terminals (10) are electrically connected with conductive bolts (9) on the mounting plate (13), the connection terminals (10) are plugged with signal transmission lines (11), and the signal transmission lines (11) are used for independently transmitting the collected electric signals so as to perform the partial discharge test.
8. The utility model provides a GIS capacitor partial discharge testing arrangement, including test tank (14), test tank (14) support subaerial, one end of test tank (14) is provided with basin formula edge, basin formula edge is connected with high-voltage power supply electricity, a serial communication port, still include GIS capacitor partial discharge test fixture according to claim 7, basin formula edge can stretch into the inside of voltage-sharing portion one (21), be provided with the display and the partial discharge test module of electric connection on test tank (14), the partial discharge test module inboard is provided with a plurality of sockets, signal transmission line (11) all can be connected with corresponding socket electricity, the partial discharge test module is used for judging whether there is partial discharge in the corresponding capacitor that awaits measuring, the display can show the discharge condition of corresponding socket.
9. The GIS capacitor partial discharge testing device according to claim 8, wherein an inner rail (16) is provided on an inner wall of the test tank (14), the moving frame (7) is capable of moving on the inner rail (16), the GIS capacitor partial discharge testing device further comprises a trolley (15) and a sliding rail (17), an outer guide rail (6) is provided on an upper portion of the trolley (15), the moving frame (7) is capable of moving on the outer rail, the sliding rail (17) is provided on the ground, the trolley (15) is capable of moving on the sliding rail (17), and when the trolley (15) approaches the test tank (14), the moving frame (7) is capable of moving along the outer rail to the inner rail (16).
10. A method for testing a GIS capacitor, characterized in that the partial discharge testing device of the GIS capacitor according to claim 9 is adopted, and the method comprises the following steps:
s01: the capacitor to be tested is arranged on a GIS capacitor partial discharge test fixture;
s02: after the installation is finished, the GIS capacitor partial discharge testing tool is moved to the inside of the test tank through the cart until the conducting rod is spliced with the basin-type rim;
s03: electrically connecting the signal transmission line with the partial discharge test module;
s04: closing a tank door of the test tank, and carrying out vacuumizing and inflating operation:
s05: turning on a high-voltage power supply;
s06: the partial discharge test module judges the partial discharge condition of each capacitor to be tested and displays the partial discharge condition through the display.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211549777.4A CN116148606B (en) | 2022-12-05 | 2022-12-05 | GIS (gas insulated switchgear) capacitor partial discharge testing tool, partial discharge testing device and testing method |
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| CN202211549777.4A CN116148606B (en) | 2022-12-05 | 2022-12-05 | GIS (gas insulated switchgear) capacitor partial discharge testing tool, partial discharge testing device and testing method |
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| CN116148606B true CN116148606B (en) | 2023-11-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353574A (en) * | 2013-07-11 | 2013-10-16 | 河南平高东芝高压开关有限公司 | Insulation test device for insulated pull rod of GIS (Gas Insulated metal-enclosed Switchgear) |
| CN111077425A (en) * | 2020-01-17 | 2020-04-28 | 全球能源互联网研究院有限公司 | Electrical property verifying attachment of 800kV insulating pull rod |
| CN112505516A (en) * | 2020-09-30 | 2021-03-16 | 江苏省如高高压电器有限公司 | Insulation part electric appliance performance test system for high-voltage electric appliance |
| CN217521298U (en) * | 2022-03-30 | 2022-09-30 | 中国电力科学研究院有限公司 | Partial discharge measuring equipment and device of GIS insulating pull rod |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353574A (en) * | 2013-07-11 | 2013-10-16 | 河南平高东芝高压开关有限公司 | Insulation test device for insulated pull rod of GIS (Gas Insulated metal-enclosed Switchgear) |
| CN111077425A (en) * | 2020-01-17 | 2020-04-28 | 全球能源互联网研究院有限公司 | Electrical property verifying attachment of 800kV insulating pull rod |
| CN112505516A (en) * | 2020-09-30 | 2021-03-16 | 江苏省如高高压电器有限公司 | Insulation part electric appliance performance test system for high-voltage electric appliance |
| CN217521298U (en) * | 2022-03-30 | 2022-09-30 | 中国电力科学研究院有限公司 | Partial discharge measuring equipment and device of GIS insulating pull rod |
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