CN102004201B - Cable gas insulated switchgear (GIS) terminal tester - Google Patents
Cable gas insulated switchgear (GIS) terminal tester Download PDFInfo
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- CN102004201B CN102004201B CN2010106007792A CN201010600779A CN102004201B CN 102004201 B CN102004201 B CN 102004201B CN 2010106007792 A CN2010106007792 A CN 2010106007792A CN 201010600779 A CN201010600779 A CN 201010600779A CN 102004201 B CN102004201 B CN 102004201B
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- insulating
- base plate
- cylinder body
- gis
- insulated
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- 238000012360 testing method Methods 0.000 claims abstract description 56
- 239000007789 gas Substances 0.000 description 12
- 230000005684 electric field Effects 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Testing Relating To Insulation (AREA)
Abstract
The invention relates to a cable gas insulated switchgear (GIS) terminal tester which comprises an insulated cylindrical shell, wherein one end of the insulated cylindrical shell is provided with a fixedly connected base plate, and the other end, which corresponds to the arranged base plate, of the insulated cylindrical shell is provided with a fixedly connected insulated top cap; a test cavity is formed among the interior of the insulated cylindrical shell, the insulated top cap and the base plate; a vacuum hole is reserved on the base plate and is communicated with the test cavity; a line-outgoing rod is arranged on the insulated top cap, one end of the line-outgoing rod penetrates through the insulated top cap and then is extended into the insulated cylindrical shell, and the line-outgoing rod is fixedly connected with the insulated top cap; the line-outgoing rod is provided with a guide rod corresponding to the end stretching into the insulated cylindrical shell, and the guide rod is electrically connected with the line-outgoing rod; the insulated cylindrical shell is internally provided with a shielding electrode, and the shape of the insulated electrode is matched with the insulated cylindrical shell; and one end of the insulated electrode is fixed with the base plate. The cable GIS terminal tester is simple and compact in structure, light in weight, strong in on-site adaptability, low in cost and convenient in operation and has safety and reliability.
Description
Technical field
The present invention relates to a kind of test unit, especially a kind of cable GIS terminal test unit specifically is used for high-pressure cross-linking cable and the verifying attachment of corresponding accessory between switchyard that two ends are the GIS terminal.
Background technology
Adopt the cable form at GIS (Gas Insulated Switchgear) terminal that two kinds of situation are arranged usually: first kind of situation is that an end is the GIS terminal, and the other end is an outdoor terminal; Second kind of situation is that two ends are the GIS terminal.When the cable under first kind of situation carries out completion test, generally can break off, apply DC voltage (oil-filled cable) at cable outdoor terminal place or alternating voltage (crosslinked cable) carries out completion test from outdoor terminal and overhead transmission line.During cable completion test under second kind of situation; Because the GIS cable switch air chamber structure of each GIS equipment producer there are differences; Wherein lightning arrester in cable termination and the GIS air chamber, press that to become the ten minutes that the structure that directly links to each other (no plug-in strip separates) uses in recent years extensive, this cause by the commissioning test withstand voltage make an experiment then must remove cable termination with lightning arrester, press the change connecting rod, reinstall connecting rod after testing the cable termination extraction that finishes; Afterwards cable termination is being installed; Program is very loaded down with trivial details, needs the unit of cooperation many, and duty cycle is long.In case it is undesirable that completion test takes place, the maintenance workload of doing over again is big, has delayed electric system again and has come into operation the time, brings heavy economic losses.And the cable under second kind of situation is when carrying out completion test, can only be through taking 24 hours power frequency withstand tests; This method is the dielectric level of verification cable and annex effectively, and the test period is long, and the dispatching of power netwoks of part situation also can't possess this test condition.
Carry out completion test for second kind of situation, the external existing test unit that separately cable loop is carried out, and formed commodity, and the domestic blank that still belongs to.External this device is relatively heavier, and need be installed in GIS switch cubicle upper end when making an experiment, and requires GIS switchyard factory building to have certain altitude and just can make an experiment; Therefore this device is not suitable for domestic GIS switchyard and carries out completion check.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, a kind of cable GIS terminal test unit is provided, it is simple and compact for structure, and is in light weight, and on-the-spot adaptability is strong, and is with low cost, easy to operate, safe and reliable.
According to technical scheme provided by the invention; Said cable GIS terminal test unit; Comprise insulating cylinder body, an end end of said insulating cylinder body is provided with the base plate of fixed connection, and insulating cylinder body is provided with the insulating top cover of fixed connection corresponding to the other end end that base plate is set; Form the test cavity in the insulating cylinder body and between insulating top cover and base plate; Base plate is provided with and vacuumizes the hole, and the said hole that vacuumizes is connected with said test cavity; Insulating top cover is provided with the outlet bar, stretch in the insulating cylinder body after an end of said outlet bar passes insulating top cover, and outlet bar and insulating top cover is fastenedly connected; The outlet bar is provided with guide rod corresponding to the end of stretching in the insulating cylinder body, and said guide rod is electrically connected with the outlet bar; Be provided with guarded electrode in the insulating cylinder body, the shape and the insulating cylinder body of said insulating electrode match; The one end end and the base plate of insulating electrode fix.
Said base plate is provided with the GIS terminal, and an end at said insulation terminal passes behind the base plate in the guarded electrode; Said GIS terminal is electrically connected with the outlet bar through guide rod.
Said GIS terminal is provided with radome corresponding to the end that is positioned at guarded electrode; One end of guide rod is electrically connected with the GIS terminal after passing radome.Said GIS terminal is with snap ring corresponding to being positioned at the outer end of insulating cylinder body, and said snap ring is fastened and connected through snap ring fastening bolt and base plate.
Said insulating top cover is fixedly connected with insulating cylinder body through insulated bolt.Said base plate is fixedly connected with insulating cylinder body through the base plate set bolt.Charge into insulating gas through vacuumizing the hole in the said test cavity.Said insulating gas comprises nitrogen; The pressure of insulating gas is 0.2 ~ 0.4MPa in the said test cavity.
Through register pin location-plate is installed on the said outlet bar, said location-plate and register pin all are positioned at outside the insulating cylinder body, and the contiguous insulating top cover of location-plate.Be provided with plain washer between said location-plate and insulating top cover, said plain washer is enclosed within on the outlet bar.
Advantage of the present invention: the two ends of insulating cylinder body form the test cavity through base plate and insulating top cover, charge into nitrogen or other inert gases in the test cavity, have avoided use SF
6The pollution that gas brings; Be provided with insulating electrode in the insulating cylinder body, GIS stretches in the insulating electrode at the terminal, thereby Electric Field Distribution is identical when guaranteeing the Electric Field Distribution of GIS terminal when test and working; The GIS terminal is electrically connected through guide rod and outlet bar, and whole device is easy to install, and is quick to the convenient test at GIS terminal, reduced the service condition to the GIS test, and weight is low, and on-the-spot applicability is strong, and is safe and reliable.
Description of drawings
Fig. 1 is user mode figure of the present invention.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the present invention is described further.
As shown in Figure 1: as to the present invention includes outlet bar 1, register pin 2, location-plate 3, plain washer 4, insulated bolt 5, insulating top cover 6, guide rod 7, insulating gas 8, insulating cylinder body 9, radome 10, guarded electrode 11, GIS terminal 12, base plate set bolt 13, base plate 14, shell vacuum orifice 15, snap ring 16, vacuumize hole 17 and snap ring fastening bolt 18.
As shown in Figure 1: an end end of said insulating cylinder body 9 is provided with the base plate 14 of fixed connection; Base plate 14 matches with the shape of insulating cylinder body 9 ends; Said base plate 14 fixes through base plate set bolt 13 and insulating cylinder body 9, and base plate set bolt 13 is processed by metal material.Insulating cylinder body 9 is provided with the insulating top cover 6 of fixed connection corresponding to the other end end that base plate 14 is set, and said insulating top cover 6 also matches with the shape of insulating cylinder body 9 ends; Insulating top cover 6 fixes through insulated bolt 5 and insulating cylinder body 9.Form the test cavity through base plate 14 and insulating top cover 6 in the insulating cylinder body 9; Base plate 14 is provided with and vacuumizes hole 17, and the said hole 17 that vacuumizes distributes along the axis direction perpendicular to insulating cylinder body 8, vacuumizes hole 17 and is connected with the test cavity; Can be through vacuumizing hole 17 with the test cavity state that is evacuated, and in the test cavity, inject insulating gas 8 through vacuumizing hole 17.The end that vacuumizes hole 17 forms shell and takes out true opening 15.
The center of said insulating top cover 6 is provided with outlet bar 1, and an end of said outlet bar 1 stretches in the insulating cylinder body 9 after passing insulating top cover 6.Outlet bar 1 is provided with location-plate 3 corresponding to being positioned at insulating cylinder body 9 outer ends, and said location-plate 3 is installed on the outlet bar 1 through register pin 2.Said location-plate 3 and register pin 2 contiguous insulating top covers 6,4 of location-plate 3 and insulating top covers also are provided with plain washer 4, and said plain washer 4 is enclosed within on the outlet bar 1.Because outlet bar 1 is bigger corresponding to the end of stretching in the insulating cylinder body 9, so outlet bar 1 can be pulling out insulating cylinder body 9 corresponding to an end that stretches in the insulating cylinder body 9; Outlet bar 1 can guarantee that corresponding to location-plate 3 and register pin 2 are set outlet bar 1 can not continued to push in the insulating cylinder body 9 again, thereby guarantees being located by connecting of 6 of outlet bar 1 and insulating top covers.Outlet bar 1 is provided with guide rod 7 corresponding to the end that is positioned at insulating cylinder body 9, and guide rod 7 is embedded in the groove of outlet bar 1, and guide rod 7 is electrically connected with outlet bar 1.
Also be provided with guarded electrode 11 in the insulating cylinder body 9, said guarded electrode 11 adopts metal material to process; One end end of guarded electrode 11 is fixedly connected with base plate 14; Guarded electrode 11 axial length along insulating cylinder body 9 in insulating cylinder body 9 distributes; The size of guarded electrode 11 can guarantee to be positioned at the Electric Field Distribution at guarded electrode 11 GIS terminals 12 less than the size of insulating cylinder body 9 through guarded electrode 11.
As shown in Figure 1: as during use, after 12 installations of GIS to be measured terminal, to get into switch cubicle and need carry out completion test before.At first base plate 14 is inserted in GIS terminal 12, base plate 14 is connected fixing with GIS snap ring 16 with snap ring set bolt 18.After radome 10 is installed in the end at GIS terminal 12; Guarded electrode 11 is inserted in corresponding to the end that radome 10 is set in GIS terminal 12; And guarded electrode 11 usefulness metal bolts are fixed on the base plate 14; Guarded electrode 11 is mainly used in balanced internal electric field and distributes, and this device internal electric field and actual track are consistent.Guide rod 7 is installed then, and is inserted in insulating cylinder body 9, insulating cylinder body 9 usefulness base plate set bolts 13 are connected fixing with base plate 14.Before insulating top cover 6 is fixedly installed in insulating cylinder body 9, outlet bar 1, register pin 2, location-plate 3, plain washer 4 are installed on the insulating top cover 6 form hermetically-sealed construction earlier, do not dismantling in the completion test from now on.Insulating top cover 6 is installed at last, will guide rod 7 is inserted in the groove of outlet bar 1 to good center when top cover is installed, insulating top cover 6 be connected fixing with insulating cylinder body 9 usefulness insulated bolts 5.
After this completion test device installation, need vacuumize through the test cavity in 15 pairs of insulating cylinder body of shell vacuum orifice 9, and fill N with 0.2～0.4Mpa
2Gas or other inert gas are as insulating gas 8, thus replacement SF
6Gas avoids producing environmental pollution.During test, outlet bar 1 is as the high pressure leading-in end, and the magnitude of voltage that applies test determination carries out completion test, obtains corresponding experiment data; Because the effect of insulating cylinder body 9 and guarded electrode 11 makes that the Electric Field Distribution of 12 ends, GIS terminal is consistent with the actual electrical field distribution, thus validity that can warranty test.After the off-test, open the venting valve and emit insulating gas 8, pull down insulating top cover 6, insulating cylinder body 9, guide rod 7, guarded electrode 11, radome 10, metal base plate 14 then successively.At last the GIS terminal is inserted in the switch cubicle.
The two ends of insulating cylinder body 9 of the present invention form the test cavity through base plate 14 and insulating top cover 6, charge into nitrogen or other inert gases in the test cavity, have avoided use SF
6The pollution that gas brings; Be provided with insulating electrode 11 in the insulating cylinder body 9, GIS terminal 12 is stretched in the insulating electrode 11, thereby Electric Field Distribution is identical when guaranteeing the Electric Field Distribution of GIS terminal 12 when test and working; GIS terminal logical 12 is crossed guide rod 7 and is electrically connected with outlet bar 1, and whole device is easy to install, and is quick to the convenient test at GIS terminal, has reduced the service condition to the GIS test, and weight is low, and on-the-spot applicability is strong, and is safe and reliable.
Claims (7)
1. cable GIS terminal test unit; It is characterized in that: comprise insulating cylinder body (9); One end end of said insulating cylinder body (9) is provided with the base plate (14) of fixed connection, and insulating cylinder body (9) is provided with the insulating top cover (6) of fixed connection corresponding to the other end end that base plate (14) is set; Form the test cavity in the insulating cylinder body (9) and between insulating top cover (6) and base plate (14); Base plate (14) is provided with and vacuumizes hole (17), and the said hole (17) that vacuumizes is connected with said test cavity; Insulating top cover (6) is provided with outlet bar (1), and an end of said outlet bar (1) stretches in the insulating cylinder body (9) after passing insulating top cover (6), and outlet bar (1) is fastenedly connected with insulating top cover (6); Outlet bar (1) is provided with guide rod (7) corresponding to the end of stretching in the insulating cylinder body (9), and said guide rod (7) is electrically connected with outlet bar (1); Be provided with guarded electrode (11) in the insulating cylinder body (9), the shape of said insulating electrode (11) and insulating cylinder body (9) match; The one end end and the base plate (14) of insulating electrode (11) fix;
Said base plate (14) is provided with GIS terminal (12), and an end at said GIS terminal (12) stretches in the guarded electrode (11) after passing base plate (14); Said GIS terminal (12) is electrically connected with outlet bar (1) through guide rod (7);
Said GIS terminal (12) is provided with radome (10) corresponding to the end that is positioned at guarded electrode (11); One end of guide rod (7) passes radome (10) and is electrically connected with GIS terminal (12).
2. cable GIS according to claim 1 terminal test unit; It is characterized in that: said GIS terminal (12) is with snap ring (16) corresponding to being positioned at the outer end of insulating cylinder body (9), and said snap ring (16) is fastened and connected through snap ring fastening bolt (18) and base plate (14).
3. cable GIS according to claim 1 terminal test unit is characterized in that: said insulating top cover (6) is fixedly connected with insulating cylinder body (9) through insulated bolt (5).
4. cable GIS according to claim 1 terminal test unit is characterized in that: said base plate (14) is fixedly connected with insulating cylinder body (9) through base plate set bolt (13).
5. cable GIS according to claim 1 terminal test unit is characterized in that: charge into insulating gas (8) through vacuumizing hole (17) in the said test cavity.
6. cable GIS according to claim 1 terminal test unit; It is characterized in that: said outlet bar (1) is gone up and through register pin (2) location-plate (3) is installed; Said location-plate (3) all is positioned at outside the insulating cylinder body (9) with register pin (2), and the contiguous insulating top cover (6) of location-plate (3).
7. cable GIS according to claim 6 terminal test unit is characterized in that: be provided with plain washer (4) between said location-plate (3) and insulating top cover (6), said plain washer (4) is enclosed within on the outlet bar (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106007792A CN102004201B (en) | 2010-12-22 | 2010-12-22 | Cable gas insulated switchgear (GIS) terminal tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106007792A CN102004201B (en) | 2010-12-22 | 2010-12-22 | Cable gas insulated switchgear (GIS) terminal tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102004201A CN102004201A (en) | 2011-04-06 |
| CN102004201B true CN102004201B (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106007792A Active CN102004201B (en) | 2010-12-22 | 2010-12-22 | Cable gas insulated switchgear (GIS) terminal tester |
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| Country | Link |
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| CN (1) | CN102004201B (en) |
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| CN102540007A (en) * | 2010-12-16 | 2012-07-04 | 上海市电力公司 | 500kv cable completion test method |
| CN103376436A (en) * | 2012-04-12 | 2013-10-30 | 上海吴淞电气实业有限公司 | Test tool and method for three-phase box-shared voltage transformer |
| CN104133161A (en) * | 2013-05-24 | 2014-11-05 | 国家电网公司 | electrical test fixture for lightning arrester |
| CN103353574B (en) * | 2013-07-11 | 2015-12-09 | 河南平芝高压开关有限公司 | A kind of insulation test device of GIS insulated tension pole |
| CN104237576B (en) * | 2014-10-14 | 2017-02-15 | 国家电网公司 | Cable terminal test hydraulic support of GIS cable pressure gas chamber |
| CN104698356B (en) * | 2015-03-31 | 2018-07-31 | 广东威恒输变电工程有限公司 | A kind of test casing of GIS terminal experimental rig |
| CN105067976A (en) * | 2015-08-05 | 2015-11-18 | 国家电网公司 | Cable GIS terminal integral prefabricated AC withstand voltage testing device |
| CN105364802B (en) * | 2015-12-09 | 2017-05-10 | 江苏省电力公司无锡供电公司 | Mobile worktable for GIS terminal completion tests |
| CN105954658A (en) * | 2016-06-28 | 2016-09-21 | 上海三原电缆附件有限公司 | High-voltage cable GIS terminal test apparatus |
| CN108918921B (en) * | 2018-08-06 | 2020-07-17 | 河海大学 | Withstand voltage auxiliary assembly of 220kV submarine cable GIS terminal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1503417A (en) * | 2002-11-19 | 2004-06-09 | Tmt&D��ʽ���� | Gas-insulated switch gear |
| JP2004220922A (en) * | 2003-01-15 | 2004-08-05 | Nissin Electric Co Ltd | Gas insulated switchgear |
| WO2009125467A1 (en) * | 2008-04-07 | 2009-10-15 | 三菱電機株式会社 | Vacuum breaker and gas insulated switchgear using the same |
| CN101692114A (en) * | 2009-07-10 | 2010-04-07 | 江苏省电力公司无锡供电公司 | Disconnection monitoring and alarm system for high voltage cable grounding system |
| CN201886101U (en) * | 2010-12-22 | 2011-06-29 | 江苏省电力公司无锡供电公司 | Tester for cable geographic information system (GIS) terminal |
-
2010
- 2010-12-22 CN CN2010106007792A patent/CN102004201B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1503417A (en) * | 2002-11-19 | 2004-06-09 | Tmt&D��ʽ���� | Gas-insulated switch gear |
| JP2004220922A (en) * | 2003-01-15 | 2004-08-05 | Nissin Electric Co Ltd | Gas insulated switchgear |
| WO2009125467A1 (en) * | 2008-04-07 | 2009-10-15 | 三菱電機株式会社 | Vacuum breaker and gas insulated switchgear using the same |
| CN101692114A (en) * | 2009-07-10 | 2010-04-07 | 江苏省电力公司无锡供电公司 | Disconnection monitoring and alarm system for high voltage cable grounding system |
| CN201886101U (en) * | 2010-12-22 | 2011-06-29 | 江苏省电力公司无锡供电公司 | Tester for cable geographic information system (GIS) terminal |
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| Publication number | Publication date |
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| CN102004201A (en) | 2011-04-06 |
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Owner name: STATE ELECTRIC NET CROP. JIANGSU ELECTRIC POWER CO Effective date: 20120929 |
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Effective date of registration: 20120929 Address after: 214061 Jiangsu province Binhu District of Wuxi City Liangxi Road No. 12 Patentee after: Wuxi Power Supply Co., Ltd, Jiangsu Electric Power Co. Patentee after: State Grid Corporation of China Patentee after: Jiangsu Electric Power Company Address before: 214061 Jiangsu province Binhu District of Wuxi City Liangxi Road No. 12 Patentee before: Wuxi Power Supply Co., Ltd, Jiangsu Electric Power Co. |