CN104865507B - A kind of GIS insulating part high-voltage testing devices - Google Patents
A kind of GIS insulating part high-voltage testing devices Download PDFInfo
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- CN104865507B CN104865507B CN201510279565.2A CN201510279565A CN104865507B CN 104865507 B CN104865507 B CN 104865507B CN 201510279565 A CN201510279565 A CN 201510279565A CN 104865507 B CN104865507 B CN 104865507B
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Abstract
A kind of GIS insulating part high-voltage testing devices, including transformer, six-component force balance gas tank, divider and several test units, transformer connects six-component force balance gas tank by oil-gas casing, divider connects six-component force balance gas tank by pipeline, test unit is connected with six-component force balance gas tank, test unit includes experiment tank body, experiment tank body and the junction of six-component force balance gas tank are equipped with peviform pour mass, peviform pour mass, which is bolted at test tank body end mouth, makes gas barrier between the second connecting pipe and experiment tank body, peviform pour mass, which is equipped with conducting wire, can connect busbar and insulating part to be tested, test and several cylindrical roller bearings are equipped with tank body, the central axis upright of roller bearing is in the central axis of the experiment tank body.It occupies little space, easy to operate, and cost is low.
Description
Technical field
The present invention relates to high-tension apparatus, more particularly to a kind of GIS insulating part high-voltage testing devices.
Background technology
Insulating part (disc insulator, support insulator etc.) is in gas-insulated closing metal switch apparatus (abbreviation GIS)
The critical component of insulation, largely uses in GIS, and its electric property must be guaranteed, and GIS passes through metal shell and outside
Air exclusion, the six-component force balance gas filled with certain pressure, each inflatable air chamber use insulation disc insulator inside it
Separate, conductor is supported using support insulator, accomplish to insulate between powered high-pressure conductor and shell.If deposited in insulating part
In bubble, impurity etc., shelf depreciation when can cause insulating part charging operation, defect constantly increases, and ultimately results in insulation breakdown, makes
Into GIS discharge accidents.
The pressure test of insulating part and measurement of partial discharge, can examine insulating part to whether there is defect, be to examine insulating part
The important means of electric property, and insulating part is batch production product；The high-tension testing apparatus used at present is domestic generally spacious
Open type, takes up a large area and when Partial Discharge Detection is larger by external environment influence, and external (as Germany sea is fertile) gas-insulated
Testing equipment higher price, and due to gas-insulated, the heat dissipation performance of testing transformer is poor, and therefore, how to develop can batch
Experiment, when experiment, are avoided that the experimental rig of environmental disturbances is the problem that need to be solved.
Domestic oil insulation test transformer technology is ripe, and transformer shelf depreciation itself is minimum, may be alternatively configured metal shell
Formula, can accomplish relatively high power, and perfect heat-dissipating, and routine test transformer is drawn with bushing, if gas can be introduced directly into
In body isolated bus, it is connected by high-pressure conductor with insulating part trial shell, multiple insulating parts one can be connected in trial shell
Rise, meanwhile, gas insulated bus can set multiple trial shells are in parallel to connect, and each trial shell sets and keeps apart manually
Closing, can so be tested with the insulating part in a housing, insulating part that also can be in multiple housings is tested, meanwhile, it is whole
Suit is set to full closeding equipment, and after shell reliable ground, due to screen effect, when experiment will not be influenced be subject to external environment.
Directly connected using bushing shell for transformer, can also realize the connection between testing transformer and gas insulated bus, but size is too big
(about 4 meters of the length of 550kV casings), limited space system.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention proposes a kind of GIS insulating part high-voltage testing devices, it being capable of batch
Insulating part industrial frequency withstand voltage, partial discharge test are carried out, and in experimental rig integral sealing and metal shell, metal shell can be abutted against
Ground, from environmental disturbances.It occupies little space, easy to operate, and cost is low.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of GIS insulating part high-voltage testing devices, if including transformer, six-component force balance gas tank, divider and
Dry test unit, the transformer connect six-component force balance gas tank by oil-gas casing, and the divider passes through pipeline
Six-component force balance gas tank is connected, the test unit includes the first connecting pipe, the second connecting pipe and experiment tank body, institute
State the first connecting pipe and six-component force balance gas tank and the second connecting pipe are fixedly connected with by flange respectively, described second connects
Adapter road is fixedly connected with experiment tank body by flange, and second connecting pipe and the junction of experiment tank body are poured into a mould equipped with peviform
Body, the peviform pour mass are equipped with the center conductor for forming an entirety therewith by pouring, and the peviform pour mass passes through spiral shell
Bolt, which is fixed at test tank body end mouth, makes gas barrier between the second connecting pipe and experiment tank body, and described center conductor one end leads to
Conducting wire connection busbar is crossed, the other end of the center conductor is equipped with insulating part wire connection terminal, and it is exhausted that the busbar is arranged on sulfur hexafluoride
The high-tension bus-bar in transformer is connected by the contact in the oil-gas casing in edge gas tank；If it is equipped with the experiment tank body
Dry cylindrical roller bearing, the central axis upright of the roller bearing is in the central axis of the experiment tank body.
The side wall of the experiment tank body is equipped with ground terminal.
The external side wall of test tank is equipped with four support bases.
Conductor adapting piece is further included, the conductor adapting piece is equipped with through hole for L-shaped, the bottom of the conductor adapting piece,
For conductor adapting piece to be fixed on the insulator, the conductor adapting piece is equipped with blind hole, and spring is housed in the blind hole
Conductor, the natural length of the spring conductor are more than the depth of the blind hole.
The conducting wire is equipped with disconnect switch DS and earthing switch ES.
Beneficial effects of the present invention are：
1st, oil-gas casing is applied in insulator high-potting, one end is installed in oil insulated transformer, one end installation
In only 1.3 meters or so of the insulated lengths in SF6 gas insulated bus, being installed in gas, compared with common transformer casing, greatly
It is big to save space.
2nd, concentrated and be grounded by ground terminal equipped with ground terminal, all insulating parts to be tested, save wiring space,
During experiment, it is connected to all on ground terminal, OSC detections is then being carried out by induction coil, with existing independent
Individually it is detected and is compared by induction coil, which both saves resource, also simplifies detecting step, carries out OSC detections
When, first detect on the whole, individually detected again when only entirety is not inconsistent standardization, improve detection efficiency.
3rd, test and roller bearing is equipped with tank body, when carrying out high-potting, by insulator loaded on support slot, support slot is pushed into
Tank body is tested, is tested since roller bearing is fixed on by fixing bracket in tank body, in rolling process, between roller bearing and experiment tank body
It can't not rub, the workload of staff is greatly saved in this, time saving and energy saving.
4th, blind hole is equipped with conductor adapting piece, and the gap between conductor adapting piece is eliminated using spring conductor, is ensured
Circuit unobstructed is effectively avoided due to outage problem caused by gap.
Brief description of the drawings
Fig. 1 schematic structural views of the invention；
Fig. 2 oil-gas casing connection figures；
Fig. 3 insulating parts are put into structure diagram during experiment tank body；
The structure diagram of Fig. 4 insulating parts and conductor adapting piece；
Fig. 5 roller bearing schematic diagrames.
Wherein, 1 transformer；2 six-component force balance gas tanks；3 divider；5 oil-gas casings；6 first connecting pipes；7
Two connecting pipes；8 experiment tank bodies；9 peviform pour mass；10 center conductors；11 insulator wire connection terminals；12 roller bearings；13 ground terminals
Son；14 support bases；15 conductor adapting pieces；16 blind holes；17 spring conductors；18 fixing brackets；19 support slots.
Embodiment
In order to be better understood by technical scheme, the invention will be further described below in conjunction with the accompanying drawings.
As shown in Figs. 1-5, a kind of GIS insulating part high-voltage testing devices, including transformer 1, six-component force balance gas
Tank 2, divider 3 and several test units, the transformer 1 connect six-component force balance gas tank, institute by oil-gas casing 5
State divider 3 and six-component force balance gas tank 2 is connected by pipeline, the test unit connects including the first connecting pipe 6, second
Adapter road 7 with experiment tank body 8, first connecting pipe 6 respectively by flange be fixedly connected six-component force balance gas tank 2 with
Second connecting pipe 7, second connecting pipe 7 by flange be fixedly connected experiment tank body 8, second connecting pipe 7 with
The junction of experiment tank body 8 is equipped with peviform pour mass 9, and the peviform pour mass is equipped with by pouring one entirety of formation therewith
Center conductor 10, the peviform pour mass, which is bolted at test tank body end mouth, makes the second connecting pipe and experiment tank body
Between gas barrier, described center conductor one end connects busbar by conducting wire, and the other end of the center conductor is equipped with insulating part
Wire connection terminal 11, the busbar are arranged in six-component force balance gas tank and connect transformer by the contact in the oil-gas casing
In high-tension bus-bar；Several cylindrical roller bearings 12 are equipped with the experiment tank body, the central axis upright of the roller bearing is in institute
State the central axis of experiment tank body.
Roller bearing 12 is installed in experiment tank body 8 by fixing bracket 18, and roller bearing can be freely rotated on fixing bracket, rolling
Axis is installed tank body with experiment and is not directly contacted with, it ensure that can't rub in roller bearing rolling process with tank body, works
When, insulating part is put into support slot 19, then whole support slot is pushed into and tests tank body progress Hi-pot test, and roller bearing and tank
Body is not in frictional force when directly contact does not roll, and staff is time saving and energy saving.
The side wall of the experiment tank body is equipped with ground terminal 13, and the ground wire of detected insulating part passes through ground terminal
Ground connection.
The external side wall of test tank is equipped with four support bases 14, is used to support experiment tank body and departs from ground.
Further include conductor adapting piece 15, the conductor adapting piece for L-shaped, the bottom of the conductor adapting piece is equipped with logical
Hole, for conductor adapting piece to be fixed on the insulator, the conductor adapting piece is equipped with blind hole 16, is equipped with the blind hole
Spring conductor 17, the natural length of the spring conductor are more than the depth of the blind hole.Designed using L-shaped, two L-shaped conductors connect
Fitting complementation connects the circuit between two insulating parts.
The conducting wire is equipped with disconnect switch DS and earthing switch ES.
The present invention combines present status in China, is connected using oil-gas casing, and one end is installed in oil insulated transformer, one end peace
Loaded on only 1.3 meters or so of the insulated lengths in SF6 gas insulated bus, being installed in gas, compared with common transformer casing,
Greatly save space.Its partial discharge quantity can be controlled in below 2PC under rated voltage, meets complete set of equipments requirement.Root
According to relevant criterion 550kV GIS insulating part test voltages：740kV 1 minute；Shelf depreciation：Under 381kV voltages ,≤3PC, certainly
800kV 2A testing transformers are customized, testing transformer fully meets 550kV and following using the extraction of 600kV oil-gass casing
The experiment of GIS insulating parts needs.800kV 2A metal shells testing transformer is domestic matured product, and price is the bottom of compared with.
Prevent true software by electric Field Calculation and relative electric fields, separately design connection busbar, divider housing, insulating part examination
Tank body size and high-pressure electrified conductor size are tested, attached drawing dimensional units provided by the present invention are centimetre.Each experiment tank body and
Busbar is mounted on built-in high-frequency local discharging sensor, can use hyperfrequency (UHF) method measurement shelf depreciation；Meanwhile often
Each insulating part grounded part in a test tank body can independent sealed terminal ground, when integrally measurement partial discharge quantity is exceeded
When, it can individually detect the exceeded single insulating part of partial discharge quantity using high frequency electric detection method.
Complexes carry out voltage measurement using the capacitive divider of closing, and capacitive divider doubles as coupled capacitor, can adopt
Measurement of partial discharge is carried out with ERA methods；Complexes are equipped with three experiment tank bodies at present, can be exhausted to 30 550kV benzvalene forms at the same time
Edge carries out pressure-resistant and measurement of partial discharge, meanwhile, experiment tank body is expansible, achievees the purpose that bulge test, this experimental rig
Setting, economically and in performance achieve good effect.It can promote the use of！
Although above-mentioned be described the embodiment of the present invention with reference to attached drawing, model not is protected to the present invention
The limitation enclosed, those skilled in the art should understand that, on the basis of technical scheme, those skilled in the art are not
Need to make the creative labor the various modifications that can be made or deformation still within protection scope of the present invention.
Claims (2)
1. a kind of GIS insulating part high-voltage testing devices, including transformer, six-component force balance gas tank, divider and some
A test unit, it is characterized in that, the transformer connects six-component force balance gas tank, the oil-gas casing by oil-gas casing
One end be installed in oil insulated transformer, one end is installed in SF6 gas insulated bus；The divider is connected by pipeline
Six-component force balance gas tank, the test unit include the first connecting pipe, the second connecting pipe and experiment tank body, and described the
One connecting pipe is fixedly connected with six-component force balance gas tank and the second connecting pipe, second connecting tube by flange respectively
Road is fixedly connected with experiment tank body by flange, and second connecting pipe and the junction of experiment tank body are equipped with peviform pour mass,
The peviform pour mass is equipped with the center conductor for forming an entirety therewith by pouring, and the peviform pour mass is consolidated by bolt
Being scheduled at test tank body end mouth makes gas barrier between the second connecting pipe and experiment tank body, and described center conductor one end is by leading
Line connects busbar, and the other end of the center conductor is equipped with insulating part wire connection terminal, and the busbar is arranged on six-component force balance gas
The high-tension bus-bar in transformer is connected by the contact in the oil-gas casing in body tank；Several are equipped with the experiment tank body
Cylindrical roller bearing, the central axis upright of the roller bearing is in the central axis of the experiment tank body；The side wall of the experiment tank body
It is equipped with ground terminal；Conductor adapting piece is further included, the conductor adapting piece sets for L-shaped, the bottom of the conductor adapting piece
There is through hole, for conductor adapting piece to be fixed on the insulator, the conductor adapting piece is equipped with blind hole, is filled in the blind hole
There is spring conductor, the natural length of the spring conductor is more than the depth of the blind hole；The external side wall of test tank is equipped with
Four support bases.
2. a kind of GIS insulating part high-voltage testing devices according to claim 1, it is characterized in that, the conducting wire is equipped with
Disconnect switch DS and earthing switch ES.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510279565.2A CN104865507B (en) | 2015-05-27 | 2015-05-27 | A kind of GIS insulating part high-voltage testing devices |
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| CN201510279565.2A CN104865507B (en) | 2015-05-27 | 2015-05-27 | A kind of GIS insulating part high-voltage testing devices |
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| CN104865507A CN104865507A (en) | 2015-08-26 |
| CN104865507B true CN104865507B (en) | 2018-05-01 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105606851B (en) * | 2015-11-27 | 2019-01-11 | 国家电网公司 | High voltage direct current supporting insulator experimental rig insulator driving device |
| CN105510780B (en) * | 2015-11-27 | 2018-11-16 | 云南电网有限责任公司电力科学研究院 | SF6 High-Voltage Electrical Appliances insulated pull rod Insulation Test system and method |
| CN112505516B (en) * | 2020-09-30 | 2024-04-30 | 江苏省如高高压电器有限公司 | Electrical appliance performance test system for insulating part for high-voltage electrical appliance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09292435A (en) * | 1996-04-25 | 1997-11-11 | Toshiba Corp | Protecting device for withstand voltage test |
| CN201654173U (en) * | 2010-03-26 | 2010-11-24 | 河南平高电气股份有限公司 | Resistor core bar withstand voltage test device for 800KV grade GIS |
| CN101839960B (en) * | 2010-04-09 | 2012-05-23 | 江苏雷宇高电压设备有限公司 | Complete power-frequency oil-gas partial discharge-free test transformer equipment |
| CN202166716U (en) * | 2011-06-10 | 2012-03-14 | 平高集团有限公司 | Insulation test device used for superhigh voltage basin-type insulator |
| CN202305740U (en) * | 2011-10-28 | 2012-07-04 | 山东泰开高压开关有限公司 | Voltage withstand partial discharge test tooling for combined electric appliance isolator |
| CN204347192U (en) * | 2014-12-15 | 2015-05-20 | 正泰电气股份有限公司 | Disc insulator Withstand test device |
| CN204694809U (en) * | 2015-05-27 | 2015-10-07 | 山东电工电气日立高压开关有限公司 | A kind of GIS insulating part high-voltage testing device |
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