CN113092953A - GIS inner shell spike simulation device and method - Google Patents

GIS inner shell spike simulation device and method Download PDF

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Publication number
CN113092953A
CN113092953A CN202110254901.3A CN202110254901A CN113092953A CN 113092953 A CN113092953 A CN 113092953A CN 202110254901 A CN202110254901 A CN 202110254901A CN 113092953 A CN113092953 A CN 113092953A
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CN
China
Prior art keywords
gis
needle
wheel disc
needle electrode
shell
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Pending
Application number
CN202110254901.3A
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Chinese (zh)
Inventor
庞小峰
高超
周福升
黄若栋
杨芸
熊佳明
王国利
宋坤宇
姚聪伟
赵晓凤
王增彬
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CSG Electric Power Research Institute
Electric Power Research Institute of Guangdong Power Grid Co Ltd
Research Institute of Southern Power Grid Co Ltd
Original Assignee
Electric Power Research Institute of Guangdong Power Grid Co Ltd
Research Institute of Southern Power Grid Co Ltd
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Application filed by Electric Power Research Institute of Guangdong Power Grid Co Ltd, Research Institute of Southern Power Grid Co Ltd filed Critical Electric Power Research Institute of Guangdong Power Grid Co Ltd
Priority to CN202110254901.3A priority Critical patent/CN113092953A/en
Publication of CN113092953A publication Critical patent/CN113092953A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing 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
    • G01R31/1227Testing 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02General constructional details

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Relating To Insulation (AREA)

Abstract

The invention discloses a GIS inner shell spike simulation device and a method, wherein the device comprises: the device comprises a GIS shell, a flange cover, a wheel disc provided with at least two through holes, at least two adjusting rods, at least two needle electrode clamping seats and at least two needle electrodes; an opening for replacing the needle electrode is formed in the outer portion of the GIS shell, a flange facing the outer portion of the GIS shell is arranged around the opening, and the flange is matched with a flange cover to form an airtight structure; a circular hole is formed in the center of the flange cover, a wheel disc is arranged in the circular hole, and the flange cover, the wheel disc and the adjusting rod are matched to form an airtight structure; the bottom end of the adjusting rod extends into the airtight structure through the through hole respectively and is connected with the top end of the needle electrode holder; the bottom of the needle electrode holder is connected with the needle electrode, and the needle point of the needle electrode extends into the GIS shell through the opening, so that the problem of replacing the needle electrode in the closed state of the experimental cavity is solved, the experimental efficiency and the equipment reliability are improved, and SF (sulfur hexafluoride) is reduced6Of leaksProbability.

Description

GIS inner shell spike simulation device and method
Technical Field
The invention relates to the technical field of insulation testing of Gas Insulated Switchgear (GIS), in particular to a GIS inner shell spike simulation device and method.
Background
SF at pressure in Gas Insulated enclosed Switchgear (GIS)6The gas is used as an insulating medium, has the advantages of excellent insulating property, small volume, safe and reliable operation and the like, and is widely applied to power systems at home and abroad. Due to SF6Gas has stronger insulating property when the uniformity of an electric field is better, so the GIS is usually designed into a coaxial cylindrical structure in engineering, and the uniformity of the internal electric field is kept. The insulation defect of the shell spike occurs due to metal spike caused by poor processing, mechanical damage or scraping during assemblyCausing the electric field to be distorted so that the local electric field is too high, resulting in SF6The gas insulation performance is greatly degraded. Therefore, it is necessary to design a device and a method capable of truly simulating the GIS inner housing spike defect so as to study the GIS inner housing spike discharge condition.
The defect of shell spine in needle board electrode simulation GIS of prior art, needle electrode easily appears the electric arc ablation in the experimentation, arouse the change of needle electrode surface state, cause the inaccuracy of experimental result, consequently, the defect device that shell spine discharges in study GIS at present all need open the experiment cavity after certain experiment number of times to change the needle electrode, make the operating efficiency of experiment low, the multiple opening and closing of experiment cavity will influence equipment reliability simultaneously, and can cause SF6The gas leakage probability increases.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the GIS inner shell spike simulation device and method solve the problem of replacing a needle electrode in a closed state of an experiment cavity, improve experiment efficiency and equipment reliability, and reduce SF6 gas leakage probability.
In order to solve the above technical problem, an embodiment of the present invention provides a GIS inner housing spike simulation device, including: the device comprises a GIS shell, a flange cover, a wheel disc provided with at least two through holes, at least two adjusting rods, at least two needle electrode clamping seats and at least two needle electrodes;
an opening for replacing the needle electrode is formed in the outer portion of the GIS shell, a flange facing the outer portion of the GIS shell is arranged around the opening, and the flange cover are matched to form an airtight structure;
a circular hole is formed in the center of the flange cover, the wheel disc is arranged in the circular hole, and the flange cover, the wheel disc and the adjusting rod are matched to form the airtight structure;
the bottom end of the adjusting rod extends into the airtight structure through the through holes respectively and is connected with the top end of the needle electrode holder;
the bottom of the needle electrode holder is connected with the needle electrode, and the needle point of the needle electrode extends into the GIS shell through the opening.
Optionally, a first sealing groove for placing a sealing ring is arranged between the contact surfaces of the flange and the flange cover;
the flange cover with be provided with the second seal groove of placing the sealing washer between the rim plate contact surface, rim plate edge be provided with second seal groove complex arch.
Optionally, the wheel disc provided with at least two through holes specifically includes: at least two through holes are uniformly formed in the positions which are the same as the circle center of the wheel disc;
the hole wall of the through hole is provided with a sealing groove for placing a sealing ring, and the adjusting rod penetrates through the sealing ring respectively and is connected with the through hole in a sealing manner.
Optionally, the needle electrode holder is a cylinder, the diameter of the needle electrode holder equals to the diameter of the bottom end of the adjusting rod, the bottom end of the needle electrode holder is provided with a first through hole connected with the needle electrode in a matching manner, a jackscrew hole is formed in the side face of the needle electrode holder, the needle electrode is fixed through a screw penetrating through the jackscrew hole, and the needle point of the needle electrode extends into the GIS shell.
Optionally, an annular handle is arranged at the center of the wheel disc, and the edge of the annular handle is subjected to fillet treatment and polishing treatment.
Correspondingly, the embodiment of the invention also provides a GIS inner shell spike simulation method, which is suitable for the GIS inner shell spike simulation device and comprises the following steps:
rotating the wheel disc to enable the at least two needle electrodes on the wheel disc to be located at preset experiment positions one by one, adjusting the adjusting rod to enable the at least two needle electrodes to extend into the GIS shell one by one and extend into a preset length, and measuring the partial discharge characteristic and the breakdown characteristic of the GIS; or the like, or, alternatively,
and adjusting the adjusting rod to enable the at least two needle electrodes to extend into the GIS shell one by one and to extend into a preset length, and then rotating the wheel disc to enable the at least two needle electrodes on the wheel disc to be located at preset experimental positions one by one and to measure the partial discharge characteristic and the breakdown characteristic of the GIS.
Optionally, the rotating the wheel disc to make the at least two needle electrodes on the wheel disc located at preset experimental positions one by one further includes:
when one of the needle electrodes is located at a preset experimental position, the other needle electrodes are located at non-preset experimental positions;
adjust the regulation pole makes two at least needle electrodes stretch into one by one in the GIS casing and stretch into preset length, still include:
when one of the needle electrodes extends into the GIS shell and extends into a preset length, the needle points of the other needle electrodes and the bottom of the GIS shell are in the same horizontal position.
Optionally, the method further includes:
the wheel disc is rotated each time, so that the preset experiment positions where the at least two needle electrodes are located can be different;
and adjusting the adjusting rod every time to enable the preset lengths of the at least two needle electrodes to extend into to be different.
The GIS inner shell spike simulation device and method provided by the embodiment of the invention comprise the following steps: the device comprises a GIS shell, a flange cover, a wheel disc provided with at least two through holes, at least two adjusting rods, at least two needle electrode clamping seats and at least two needle electrodes; an opening for replacing the needle electrode is formed in the outer portion of the GIS shell, a flange facing the outer portion of the GIS shell is arranged around the opening, and the flange cover are matched to form an airtight structure; a circular hole is formed in the center of the flange cover, the wheel disc is arranged in the circular hole, and the flange cover, the wheel disc and the adjusting rod are matched to form the airtight structure; the bottom end of the adjusting rod extends into the airtight structure through the through holes respectively and is connected with the top end of the needle electrode holder; the bottom of the needle electrode holder is connected with the needle electrode, the needle point of the needle electrode extends into the GIS shell through the opening, the needle electrode is replaced by jointly adjusting the wheel disc and the adjusting rod without opening the GIS shell, and the problem that the experiment cavity is closed is solvedThe problem of changing the needle electrode is solved, the experimental efficiency and the reliability of the equipment are improved, and simultaneously the SF is reduced6The probability of gas leakage.
Drawings
Fig. 1 is a schematic structural diagram of a GIS inner housing spike simulation apparatus according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a GIS inner housing spike simulation method according to a second embodiment of the present invention;
fig. 3 is a schematic flow chart of a GIS inner housing spike simulation method according to a third embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used to distinguish the same items or similar items with basically the same functions or actions, and those skilled in the art can understand that the words "first", "second", and the like do not limit the quantity and execution order.
An embodiment of the present invention provides a device for simulating GIS inner housing spikes, as shown in a cross-sectional view given in fig. 1, the device includes: the device comprises a GIS shell 1, a flange 2, a flange cover 3, a wheel disc 4 provided with at least two through holes, at least two adjusting rods 5, at least two needle electrode clamping seats 6 and at least two needle electrodes 7;
an opening for replacing the needle electrode is formed in the outer portion of the GIS shell 1, the flange 2 facing the outer portion of the GIS shell is arranged around the opening, and the flange 2 and the flange cover 3 are matched to form an airtight structure;
a round hole is formed in the center of the flange cover 3, the wheel disc 4 is arranged in the round hole, and the flange cover 3, the wheel disc 4 and the adjusting rod 5 are matched to form the airtight structure;
the bottom end of the adjusting rod 5 extends into the airtight structure through the through holes respectively and is connected with the top end of the needle electrode holder 6;
the bottom end of the needle electrode holder 6 is connected with the needle electrode 7, and the needle point of the needle electrode extends into the GIS shell through the opening.
Optionally, an annular handle 8 is arranged at the center of the wheel disc 4, and the edge of the annular handle 8 is subjected to fillet treatment and polishing treatment.
Exemplarily, fig. 1 shows a cross-sectional view of a device for simulating GIS inner housing spike, in a three-dimensional structure, the GIS inner housing 1 may be a flat cylinder, an opening for replacing the pin electrode is disposed at a central position of the flat cylinder, the flange 2 facing the outside of the GIS inner housing 1 is disposed around the opening, and the flange 2 and the flange cover 3 cooperate to form an airtight structure; a round hole is formed in the center of the flange cover 3, the wheel disc 4 is arranged in the round hole, and the flange cover 3, the wheel disc 4 and the adjusting rod 5 are matched to form the airtight structure; the bottom end of the adjusting rod 5 extends into the airtight structure through the through holes respectively and is connected with the top end of the needle electrode holder 6; the bottom end of the needle electrode holder 6 is connected with the needle electrode 7, and the needle tip of the needle electrode extends into the GIS shell through the opening; optionally, an annular handle 8 is arranged at the center of the wheel disc 4, and the edge of the annular handle 8 is subjected to fillet treatment and polishing treatment. The above-mentioned three-dimensional structure is longitudinally cut from a middle position, and is transversely broken on the basis of the longitudinal cut, so that the cross-sectional view in fig. 1 can be obtained.
Specifically, the GIS shell 1 is designed according to 500kV GIS standard, the shell material is preferably aluminum alloy, and the inner diameter of the shell is preferably 450 mm.
Preferably, the GIS housing 1 is provided with a circular opening for the needle electrode to be replaced, the diameter of the circular opening is preferably 100mm, the edge of the through hole is rounded, and the radius of the rounded corner is preferably 5 mm.
Optionally, the flange 2 and the flange cover 3 are fixedly connected, and may be connected by gluing or by bolts. Specifically, when the flange 2 and the flange cover 3 are connected by bolts, threaded holes need to be formed in the edges of the flange 2 and the flange cover 3, and the flange 2 and the flange cover 3 are fixed by the matching of the bolts and the threaded holes; the diameters of the flange 2 and the flange cover 3 are preferably 200 mm; the number of the threaded holes arranged on the flange 2 and the flange cover 3 is preferably 8, and the type of the threaded holes is preferably M10; the flange and the flange cover are preferably made of aluminum alloy.
Preferably, a first sealing groove for placing a sealing ring is arranged between the contact surfaces of the flange 2 and the flange cover 3; the flange cover 3 with be provided with the second seal groove of placing the sealing washer between 4 contact surfaces of rim plate, 4 edges of rim plate be provided with second seal groove complex arch.
Specifically, for guaranteeing the gas tightness of experiment cavity, can be preferred on flange 2 and 3 contact surfaces of flange lid set up a seal groove of placing O type sealing washer in flange 2 side, can be preferred on flange lid 3 and 4 contact surfaces of rim plate set up a seal groove of placing O type sealing washer in flange lid 3 side, 4 edges of rim plate set up with 3 seal groove complex square bulge of flange lid, this protruding surface is smooth, paint lubricating oil in this arch department, reduce the wearing and tearing to the sealing washer when the rim plate slides.
Preferably, at least two through holes are uniformly arranged at the same position away from the circle center of the wheel disc 4;
the hole wall of the through hole is provided with a sealing groove for placing a sealing ring, and the adjusting rods 6 respectively penetrate through the sealing ring and are in sealing connection with the through hole.
Specifically, the diameter of the wheel disc 4 is preferably 90mm, the number of the through holes of the wheel disc 4 is preferably 4, the diameter of the through holes of the wheel disc 4 is preferably 5mm, and the through hole distribution mode of the wheel disc 4 is preferably evenly distributed at a position 20mm away from the center of the wheel disc 4. The length of the annular handle 5 at the center of the wheel 4 is preferably 60mm, and the diameter of the end of the annular handle 5 is preferably 30 mm. The material of the wheel disc 4 is preferably an aluminium alloy. The hole wall of the through hole of the wheel disc 4 is provided with a sealing groove for placing an O-shaped sealing ring, so that the air tightness of the experimental cavity is ensured.
Specifically, the bottom end of the adjusting rod 5 is bonded with the top end of the needle electrode holder 6 through conductive adhesive.
Preferably, the needle electrode holder 6 is a cylinder, the diameter of the needle electrode holder 6 is equal to the diameter of the bottom end of the adjusting rod 5, the bottom end of the needle electrode holder 6 is provided with a first through hole connected with the needle electrode 7 in a matched mode, a jackscrew hole is formed in the side face of the needle electrode 7, the needle electrode 7 is fixed through a screw penetrating through the jackscrew hole, and the needle point of the needle electrode 7 extends into the GIS shell 1.
Specifically, the needle electrode material is preferably stainless steel, the shape of the needle head is preferably hemispherical, the diameter of the needle electrode is selected from 0.5-5 mm, and the diameter of the needle electrode in the embodiment is preferably four sizes of 0.5mm, 1mm, 2mm and 5 mm.
The needle electrode holder material is preferably an aluminum alloy, preferably cylindrical in shape, and preferably 3mm in diameter. The bottom end of the needle electrode holder 6 is provided with a first through hole which is connected with the needle electrode 7 in a matched mode, the diameter of the first through hole is preferably larger than the diameter of the needle electrode 7 in a matched mode by 0.2mm, a jackscrew hole is formed in the side face of the needle electrode holder 6, and the jackscrew thread is preferably M3. The needle electrode 7 is preferably fixed by inserting the needle electrode 7 into the first through hole of the needle electrode holder 6 and fixing the needle electrode by a jackscrew hole and a jackscrew thread. The adjusting rod 5 is preferably a 25mm stroke differential head.
Correspondingly, an embodiment of the present invention further provides a GIS inner housing spike simulation method, as shown in the flow diagrams given in fig. 2 and fig. 3, the method is applicable to the GIS inner housing spike simulation device according to the above embodiment, and includes:
s1, rotating the wheel disc to enable the at least two needle electrodes on the wheel disc to be located at preset experiment positions one by one;
s2, adjusting the adjusting rod again to enable the at least two needle electrodes to extend into the GIS shell one by one and to extend into a preset length, and measuring the partial discharge characteristic and the breakdown characteristic of the GIS; or the like, or, alternatively,
s1', adjusting the adjusting rod to enable the at least two needle electrodes to extend into the GIS shell one by one and to a preset length;
s2', the wheel disc is rotated, the at least two needle electrodes on the wheel disc are located at preset experiment positions one by one, and GIS partial discharge characteristics and breakdown characteristics are measured.
Optionally, the rotating the wheel disc to make the at least two needle electrodes on the wheel disc located at preset experimental positions one by one further includes:
when one of the needle electrodes is located at a preset experimental position, the other needle electrodes are located at non-preset experimental positions;
adjust the regulation pole makes two at least needle electrodes stretch into one by one in the GIS casing and stretch into preset length, still include:
when one of the needle electrodes extends into the GIS shell and extends into a preset length, the needle points of the other needle electrodes and the bottom of the GIS shell are in the same horizontal position.
Optionally, the method further includes:
the wheel disc is rotated each time, so that the preset experiment positions where the at least two needle electrodes are located can be different;
and adjusting the adjusting rod every time to enable the preset lengths of the at least two needle electrodes to extend into to be different.
In a preferred embodiment, four pin electrodes are mounted on the wheel disc at the same time.
Rotating the wheel disc to enable the at least two needle electrodes on the wheel disc to be located at preset experiment positions one by one, adjusting the adjusting rod to enable the at least two needle electrodes to extend into the GIS shell one by one and to extend into a preset length, and performing GIS partial discharge detection;
specifically, the at least two needle electrodes are numbered in sequence from 11;
rotating the wheel disc 4 to enable the needle electrodes 11 on the wheel disc to be located at preset experiment positions, and enabling the rest needle electrodes to be located at non-preset experiment positions;
adjusting the adjusting rod 5 to enable the needle electrodes 11 to extend into the GIS shell and to extend into a preset length, and measuring the partial discharge characteristic and the breakdown characteristic of the GIS after the needle points of the rest needle electrodes and the bottom of the GIS shell are at the same horizontal position;
when GIS partial discharge detection is finished, the needle electrode needs to be replaced; rotating the wheel disc 4 to enable the needle electrodes 12 on the wheel disc to be located at preset experiment positions, and enabling the rest needle electrodes to be located at non-preset experiment positions;
adjusting the adjusting rod 5 to enable the needle electrodes 12 to extend into the GIS shell and to a preset length, and measuring the partial discharge characteristic and the breakdown characteristic of the GIS after the needle points of the rest needle electrodes and the bottom of the GIS shell are at the same horizontal position;
when GIS partial discharge detection is finished, the needle electrode needs to be replaced; rotating the wheel disc 4 to enable the needle electrodes 13 on the wheel disc to be located at preset experiment positions, and enabling the rest needle electrodes to be located at non-preset experiment positions;
adjusting the adjusting rod 5 to enable the needle electrodes 13 to extend into the GIS shell and extend into a preset length, and measuring the partial discharge characteristic and the breakdown characteristic of the GIS after the needle points of the rest needle electrodes and the bottom of the GIS shell are at the same horizontal position;
when GIS partial discharge detection is finished, the needle electrode needs to be replaced; rotating the wheel disc 5 to enable the needle electrodes 14 on the wheel disc to be located at preset experiment positions, and enabling the rest needle electrodes to be located at non-preset experiment positions;
adjusting the adjusting rod 5 to enable the needle electrodes 14 to extend into the GIS shell and to extend into a preset length, and measuring the partial discharge characteristic and the breakdown characteristic of the GIS after the needle points of the rest needle electrodes and the bottom of the GIS shell are at the same horizontal position;
it should be noted that, the wheel disc 4 is rotated each time, so that the preset experiment positions where the at least two needle electrodes are located may be different; the adjusting rod 5 is adjusted each time, so that the preset lengths into which the at least two needle electrodes extend can be different.
The GIS inner shell spike simulation device and method provided by the embodiment of the invention comprise the following steps: the device comprises a GIS shell, a flange cover, a wheel disc provided with at least two through holes, at least two adjusting rods, at least two needle electrode clamping seats and at least two needle electrodes; wherein, the GIS shell is externally provided with a needle for supplying the needleThe opening is used for replacing the electrode, the flange facing the outside of the GIS shell is arranged around the opening, and the flange cover are matched to form an airtight structure; a circular hole is formed in the center of the flange cover, the wheel disc is arranged in the circular hole, and the flange cover, the wheel disc and the adjusting rod are matched to form the airtight structure; the bottom end of the adjusting rod extends into the airtight structure through the through holes respectively and is connected with the top end of the needle electrode holder; the bottom of needle electrode holder with the needle electrode is connected, the needle point of needle electrode passes through the opening stretches into in the GIS casing, through the change of the joint adjustment realization needle electrode of rim plate and regulation pole, and need not to open the GIS casing, solved the problem of changing the needle electrode under experiment cavity closed condition, improved the reliability of experimental efficiency and equipment, reduce SF simultaneously6The probability of gas leakage.
In addition, through the common regulation of rim plate and regulation pole, the partial discharge characteristic and the puncture characteristic of the GIS casing that correspond when measuring the needle electrode and stretching into different length and different positions in the GIS casing to the influence of casing spine that can further research.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (8)

1. A GIS inner shell spine simulation device is characterized by comprising: the device comprises a GIS shell, a flange cover, a wheel disc provided with at least two through holes, at least two adjusting rods, at least two needle electrode clamping seats and at least two needle electrodes;
an opening for replacing the needle electrode is formed in the outer portion of the GIS shell, a flange facing the outer portion of the GIS shell is arranged around the opening, and the flange cover are matched to form an airtight structure;
a circular hole is formed in the center of the flange cover, the wheel disc is arranged in the circular hole, and the flange cover, the wheel disc and the adjusting rod are matched to form the airtight structure;
the bottom end of the adjusting rod extends into the airtight structure through the through holes respectively and is connected with the top end of the needle electrode holder;
the bottom of the needle electrode holder is connected with the needle electrode, and the needle point of the needle electrode extends into the GIS shell through the opening.
2. The GIS inner housing spike simulator of claim 1, wherein a first seal groove for placing a seal ring is disposed between the contact surfaces of the flange and the flange cover;
the flange cover with be provided with the second seal groove of placing the sealing washer between the rim plate contact surface, rim plate edge be provided with second seal groove complex arch.
3. The GIS inner housing spike simulation device of claim 1, wherein the wheel disc provided with at least two through holes is embodied as: at least two through holes are uniformly formed in the positions which are the same as the circle center of the wheel disc;
the hole wall of the through hole is provided with a sealing groove for placing a sealing ring, and the adjusting rod penetrates through the sealing ring respectively and is connected with the through hole in a sealing manner.
4. The GIS inner housing spike simulation device according to claim 1, wherein the needle electrode holder is a cylinder, the diameter of the needle electrode holder is equal to the diameter of the bottom end of the adjusting rod, the bottom end of the needle electrode holder is provided with a first through hole in fit connection with the needle electrode, a jackscrew hole is formed in the side surface of the needle electrode holder, the needle electrode is fixed through a screw penetrating through the jackscrew hole, and the needle tip of the needle electrode extends into the GIS inner housing.
5. The GIS inner housing spike simulator of claim 1, wherein an annular handle is provided at a center of the wheel disc, and edges of the annular handle are rounded and ground.
6. A GIS inner shell spike simulation method is applicable to the GIS inner shell spike simulation device of any one of claims 1 to 5, and the method comprises the following steps:
rotating the wheel disc to enable the at least two needle electrodes on the wheel disc to be located at preset experiment positions one by one, adjusting the adjusting rod to enable the at least two needle electrodes to extend into the GIS shell one by one and extend into a preset length, and measuring the partial discharge characteristic and the breakdown characteristic of the GIS; or the like, or, alternatively,
and adjusting the adjusting rod to enable the at least two needle electrodes to extend into the GIS shell one by one and to extend into a preset length, and then rotating the wheel disc to enable the at least two needle electrodes on the wheel disc to be located at preset experimental positions one by one and to measure the partial discharge characteristic and the breakdown characteristic of the GIS.
7. The GIS inner housing spike simulation method of claim 6, wherein the rotating the wheel disc to individually position the at least two needle electrodes on the wheel disc at predetermined experimental positions further comprises:
when one of the needle electrodes is located at a preset experimental position, the other needle electrodes are located at non-preset experimental positions;
adjust the regulation pole makes two at least needle electrodes stretch into one by one in the GIS casing and stretch into preset length, still include:
when one of the needle electrodes extends into the GIS shell and extends into a preset length, the needle points of the other needle electrodes and the bottom of the GIS shell are in the same horizontal position.
8. The GIS inner housing spike simulation method of claim 6, further comprising:
the wheel disc is rotated each time, so that the preset experiment positions where the at least two needle electrodes are located can be different;
and adjusting the adjusting rod every time to enable the preset lengths of the at least two needle electrodes to extend into to be different.
CN202110254901.3A 2021-03-09 2021-03-09 GIS inner shell spike simulation device and method Pending CN113092953A (en)

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CN105866639A (en) * 2016-04-12 2016-08-17 西安交通大学 Model for simulating spike defect of high-voltage conductor in GIS
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Application publication date: 20210709