CN103630786A - Dry terminal system of type test for ultrahigh-voltage cables of 500kV and below - Google Patents
Dry terminal system of type test for ultrahigh-voltage cables of 500kV and below Download PDFInfo
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- CN103630786A CN103630786A CN201310664132.XA CN201310664132A CN103630786A CN 103630786 A CN103630786 A CN 103630786A CN 201310664132 A CN201310664132 A CN 201310664132A CN 103630786 A CN103630786 A CN 103630786A
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Abstract
The invention relates to a dry terminal system of type test for ultrahigh-voltage cables of 500kV and below. The system comprises a GIS cylinder, an equalizer cover, an epoxy sleeve, a stress cone, an elastic head, a connecting bar, a high-tension sleeve, and a pressure plate. One end of a test device is a test remote end which is provided with the GIS cylinder. The epoxy sleeve is mounted at one end of the GIS cylinder. The equalizer cover and the pressure plate are mounted at two ends of the epoxy sleeve respectively. The elastic head and the connecting bar both connected with the equalizer cover are disposed inside the epoxy sleeve. The stress cone in contact with the pressure plate is disposed inside the epoxy sleeve. The other end of the test device is a high voltage inlet end which is structurally symmetric with the test far end. The high tension inlet end is provided with the high-tension sleeve which is disposed inside the GIS cylinder and which is connected with the equalizer sleeve. The high-tension sleeve is connected with a high-tension electric lead. The dry terminal of type test for ultrahigh-voltage cables of 500kV and below has the advantages of accuracy of test, lower cost and the like, and is well worthy of popularization.
Description
Technical field:
The invention belongs to cable testing apparatus field, particularly a kind of 500kV and following extra-high-tension cable type approval test dry outdoor terminal system.
Background technology:
110kV extra-high-tension cable is the indispensable part of power transmission system, a large amount of uses along with China's extra-high-tension cable, the annual cable of producing reaches kilometers up to ten thousand, and these cables need to carry out delivery test before dispatching from the factory, complete the test of essential electric property, to guarantee the quality of cable.
The conventional art adopting at present adopts wet type terminal, utilize deionized water as insulating medium, in an airtight insulating vessel, play cable and extraneous insulating effect, and the making of wet type terminal need to divest the insulation shielding of cable more than 2 meters, the part that divests cable cover(ing) need to be excised before dispatching from the factory, every like this dish cable will excise the cable more than 4 meters, produce a large amount of wastes.In addition, wet type terminal is had relatively high expectations to test site environment, water temperature etc., and background interference is large, and cable partial discharge amount is large, tests inaccurate.
Summary of the invention:
The present invention is in order to overcome defect in above-mentioned prior art, provides a kind of and has replaced wet type terminal to test with dry outdoor terminal, can not produce interference, and simultaneously to temperature also no requirement (NR), test accurately; At the trial, cable two ends are also without divesting 2 meters of above insulation shieldings, 500kV and the following extra-high-tension cable type approval test dry outdoor terminal system of having saved cost.
To achieve these goals, the invention provides following technical scheme:
500kV and following extra-high-tension cable type approval test dry outdoor terminal system, comprising: GIS cylindrical shell, grading shield, epoxy bushing, stress cone, elastic head, connecting link, bushing, pressing plate; Described test unit one end is set to test far-end, test far-end is provided with GIS cylindrical shell, GIS cylindrical shell one end is provided with epoxy bushing, epoxy bushing two ends are separately installed with grading shield, pressing plate, in epoxy bushing, be provided with the elastic head, the connecting link that are connected with grading shield, in epoxy bushing, be provided with the stress cone contacting with pressing plate; The described test unit other end is set to high-tension electricity leading-in end, and described high-tension electricity leading-in end is symmetrical with test distal structure, and high-tension electricity leading-in end is provided with the bushing being connected with grading shield in GIS cylindrical shell, and bushing is connected with high-tension electricity lead-in wire.
In technique scheme, GIS cylinder is filled with SF
6.
Compared with prior art, the present invention has following beneficial effect:
This experimental provision replaces wet type terminal to test with dry outdoor terminal, because dry outdoor terminal self does not discharge, can not produce interference, and simultaneously to temperature also no requirement (NR), test accurately; At the trial, cost also, without divesting 2 meters of above insulation shieldings, has been saved in cable two ends.
Accompanying drawing explanation:
Fig. 1 is the structural representation of 500kV of the present invention and following extra-high-tension cable type approval test dry outdoor terminal system.
Reference numeral is that 1-GIS cylindrical shell, 2-grading shield, 3-epoxy bushing, 4-stress cone, 5-elastic head, 6-connecting link, 7-bushing, 8-pressing plate, 9-high-tension electricity go between, 10-cable.
Embodiment:
As shown in the figure, according to a kind of 500kV of the present invention and following extra-high-tension cable type approval test dry outdoor terminal system, comprising: GIS cylindrical shell 1, grading shield 2, epoxy bushing 3, stress cone 4, elastic head 5, connecting link 6, bushing 7, pressing plate 8; Described test unit one end is set to test far-end, test far-end is provided with GIS cylindrical shell 1, GIS cylindrical shell 1 one end is installed with epoxy bushing 3 by flange, epoxy bushing 3 two ends are separately installed with grading shield 2, pressing plate 8, in epoxy bushing 3, be provided with the connecting link 6 being connected by hexagon socket cap head screw with grading shield 2, in connecting link 6, be provided with elastic head 5, elastic head 5 is connected with grading shield 2 by nut, is provided with the stress cone 4 contacting with pressing plate 8 in epoxy bushing 3; The described test unit other end is set to high-tension electricity leading-in end, and described high-tension electricity leading-in end is symmetrical with test distal structure, and high-tension electricity leading-in end is provided with the bushing 7 being connected with grading shield 2 in GIS cylindrical shell 1, and bushing 7 is connected with high-tension electricity lead-in wire 9.
Before wireline test, need cable 10 to process, first by the sheath excision of cable 10, then the insulation screen of strip cable 10, the insulation course that exposes cable 10, the insulation course of cable 10 need to carry out surperficial polishing with buffing machine, reach certain smooth finish, cable 10 surfaces have not allowed impurity.The defects such as depression, after cable 10 surface treatments, first be inserted in pressing plate 8, then put stress cone 4, after the surface of stress cone 4 applies silicone oil, insert epoxy bushing 3, the conductor of cable 10 is contacted with the elastic head 5 in epoxy bushing 3, the downward counter stress cone 4 of pressing plate 8 is exerted pressure, and be screwed on epoxy bushing 3, after cable 10 is disposed, high-tension electricity lead-in wire 9 is connected with bushing 7, then the voltage that applies regulation is tested, the insulating gas SF in GIS cylindrical shell
6guaranteed test safety, after being completed, stress cone 4, pressing plate 8 have been unloaded from cable 10, for test is next time prepared.
This kind of 500kV and following extra-high-tension cable type approval test dry outdoor terminal system have self disturb little, affected by environment little, test the advantages such as accurate, cost-saving, have good promotional value.
Disclosed is above only several specific embodiment of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (2)
1. 500kV and a following extra-high-tension cable type approval test dry outdoor terminal system, is characterized in that: comprise GIS cylindrical shell, grading shield, epoxy bushing, stress cone, elastic head, connecting link, bushing, pressing plate; Described test unit one end is set to test far-end, test far-end is provided with GIS cylindrical shell, GIS cylindrical shell one end is provided with epoxy bushing, epoxy bushing two ends are separately installed with grading shield, pressing plate, in epoxy bushing, be provided with the elastic head, the connecting link that are connected with grading shield, in epoxy bushing, be provided with the stress cone contacting with pressing plate; The described test unit other end is set to high-tension electricity leading-in end, and described high-tension electricity leading-in end is symmetrical with test distal structure, and high-tension electricity leading-in end is provided with the bushing being connected with grading shield in GIS cylindrical shell, and bushing is connected with high-tension electricity lead-in wire.
2. 500kV according to claim 1 and following extra-high-tension cable type approval test dry outdoor terminal system, is characterized in that: described GIS cylinder is filled with SF
6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664132.XA CN103630786A (en) | 2013-12-06 | 2013-12-06 | Dry terminal system of type test for ultrahigh-voltage cables of 500kV and below |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664132.XA CN103630786A (en) | 2013-12-06 | 2013-12-06 | Dry terminal system of type test for ultrahigh-voltage cables of 500kV and below |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103630786A true CN103630786A (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310664132.XA Pending CN103630786A (en) | 2013-12-06 | 2013-12-06 | Dry terminal system of type test for ultrahigh-voltage cables of 500kV and below |
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| CN (1) | CN103630786A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865509A (en) * | 2015-06-09 | 2015-08-26 | 成都盛帮双核科技有限公司 | GIS cable terminal testing device |
| CN105116310A (en) * | 2015-08-27 | 2015-12-02 | 江苏普朗克电力科技有限公司 | Novel high voltage cable test device |
| CN108918921A (en) * | 2018-08-06 | 2018-11-30 | 河海大学 | A kind of 220kV submarine cable GIS terminal pressure resistance ancillary equipment |
| CN112526298A (en) * | 2020-11-19 | 2021-03-19 | 杭州电缆股份有限公司 | Installation process of 110kV cable partial discharge voltage withstanding dry-type test terminal |
| CN113504444A (en) * | 2021-09-13 | 2021-10-15 | 国网江西省电力有限公司电力科学研究院 | GIS is with multi-functional withstand voltage test frock |
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| JPS6282368A (en) * | 1985-10-07 | 1987-04-15 | Showa Electric Wire & Cable Co Ltd | High-voltage cable prefabrication type electric testing device for connection part |
| JP2002165351A (en) * | 2000-11-21 | 2002-06-07 | Showa Electric Wire & Cable Co Ltd | Cable terminal part and cable terminal connect part using thereof |
| CN101609102A (en) * | 2009-07-13 | 2009-12-23 | 上海三原电缆附件有限公司 | Mesolow crosslinked cable industrial frequency withstand voltage, local discharge test terminal structure |
| 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 |
| CN102270824A (en) * | 2010-06-03 | 2011-12-07 | 江苏安靠超高压电缆附件有限公司 | 500kV and more power cable dry GIS (Global Information System) terminal |
| CN102353879A (en) * | 2011-07-06 | 2012-02-15 | 浙江晨光电缆股份有限公司 | Cable partial discharge test terminal |
| CN102435923A (en) * | 2011-10-27 | 2012-05-02 | 广东电网公司广州供电局输电部 | Withstand voltage test terminal structure of cross-linked cable under 110kV voltage class or below |
| CN203643529U (en) * | 2013-12-06 | 2014-06-11 | 江苏希波电气科技有限公司 | Dry-type terminal system for type test of ultrahigh voltage cable with 500kV and below |
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2013
- 2013-12-06 CN CN201310664132.XA patent/CN103630786A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6282368A (en) * | 1985-10-07 | 1987-04-15 | Showa Electric Wire & Cable Co Ltd | High-voltage cable prefabrication type electric testing device for connection part |
| JP2002165351A (en) * | 2000-11-21 | 2002-06-07 | Showa Electric Wire & Cable Co Ltd | Cable terminal part and cable terminal connect part using thereof |
| CN101609102A (en) * | 2009-07-13 | 2009-12-23 | 上海三原电缆附件有限公司 | Mesolow crosslinked cable industrial frequency withstand voltage, local discharge test terminal structure |
| 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 |
| CN102270824A (en) * | 2010-06-03 | 2011-12-07 | 江苏安靠超高压电缆附件有限公司 | 500kV and more power cable dry GIS (Global Information System) terminal |
| CN102353879A (en) * | 2011-07-06 | 2012-02-15 | 浙江晨光电缆股份有限公司 | Cable partial discharge test terminal |
| CN102435923A (en) * | 2011-10-27 | 2012-05-02 | 广东电网公司广州供电局输电部 | Withstand voltage test terminal structure of cross-linked cable under 110kV voltage class or below |
| CN203643529U (en) * | 2013-12-06 | 2014-06-11 | 江苏希波电气科技有限公司 | Dry-type terminal system for type test of ultrahigh voltage cable with 500kV and below |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865509A (en) * | 2015-06-09 | 2015-08-26 | 成都盛帮双核科技有限公司 | GIS cable terminal testing device |
| CN104865509B (en) * | 2015-06-09 | 2017-10-20 | 成都盛帮双核科技有限公司 | A kind of GIS cable terminations experimental rig |
| CN105116310A (en) * | 2015-08-27 | 2015-12-02 | 江苏普朗克电力科技有限公司 | Novel high voltage cable test device |
| CN108918921A (en) * | 2018-08-06 | 2018-11-30 | 河海大学 | A kind of 220kV submarine cable GIS terminal pressure resistance ancillary equipment |
| CN108918921B (en) * | 2018-08-06 | 2020-07-17 | 河海大学 | Withstand voltage auxiliary assembly of 220kV submarine cable GIS terminal |
| CN112526298A (en) * | 2020-11-19 | 2021-03-19 | 杭州电缆股份有限公司 | Installation process of 110kV cable partial discharge voltage withstanding dry-type test terminal |
| CN113504444A (en) * | 2021-09-13 | 2021-10-15 | 国网江西省电力有限公司电力科学研究院 | GIS is with multi-functional withstand voltage test frock |
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Application publication date: 20140312 |