CN102497016B - The optimization method of 10kV line-breaker closing circuit - Google Patents
The optimization method of 10kV line-breaker closing circuit Download PDFInfo
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- CN102497016B CN102497016B CN201110381280.1A CN201110381280A CN102497016B CN 102497016 B CN102497016 B CN 102497016B CN 201110381280 A CN201110381280 A CN 201110381280A CN 102497016 B CN102497016 B CN 102497016B
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Abstract
The invention discloses the optimization method of a kind of 10kV line-breaker closing circuit, the present invention have adjusted relay tip pressure, the point contacted is crumpled deformation, the contact area making these points increases, make again more point cantact simultaneously, so that contact resistance reduces, so, when flowing through same electric current, the heating of contact will be greatly reduced, contact allows the electric current passed through to be greatly improved, and in original automatic trip loop, install the auxiliary reclay that a contact dynamic circuit connector capacity is bigger additional, the normally opened contact making its time delay disconnect replaces the normally opened contact of the time relay to access automatic trip loop.So in the case of contact is not switched on, under the effect of time delay normally opened contact, the most preferentially disconnect trip(ping) circuit, it is ensured that cut off trip(ping) circuit electric current, thus protect normally opened contact and will not singe and cling, it is to avoid the generation of line accident.
Description
Technical field
The invention belongs to high-tension line detection maintenance technology field, be specifically related to the optimization method of a kind of 10kV line-breaker closing circuit.
Background technology
On 10kV power circuit, all on the line pole in different locations, vacuum switch is installed.Its purpose is: on-load drawing, convenient maintenance；Short-circuit protection is provided to a certain section of circuit；Improve line walking efficiency, reduce labor intensity.But, at present, this circuit vacuum switch actual motion effect is the most undesirable, and main cause is that time relay contacts poor electrical resistance is excessive, when electric current flows through contact, will produce arc light and make actual contact point temperature raise heating.If electric current is relatively big, and when conduction time is long, temperature is possible to be raised to material softening point so that it is produce permanent deformation so that it is contact is singed and clung, and trip(ping) circuit is the most charged, causes under non-failure conditions, and chopper can not close a floodgate.Therefore, such problem has had a strong impact on the normal table operation of 10kV circuit.
Summary of the invention
It is an object of the invention to avoid above-mentioned weak point of the prior art, and provide a kind of effective protection circuit safely, effectively to avoid trip(ping) circuit fault, ensure the optimization method of the 10kV line-breaker closing circuit of circuit stable operation.
Realizing the purpose of the present invention and be the technical scheme is that the optimization method of a kind of 10kV line-breaker closing circuit, described method includes following measure:
A, adjustment relay tip pressure, crumple deformation by the point contacted, and makes contacts area of these points increase, makes again more point cantact simultaneously, so that contact resistance reduces；
B, in original automatic trip loop, install the auxiliary reclay that a contact dynamic circuit connector capacity is bigger additional so that it is the normally opened contact that time delay disconnects replaces the normally opened contact of the time relay to access automatic trip loop.
Owing to the present invention have adjusted relay tip pressure, the point contacted is crumpled deformation, the contact area making these points increases, make again more point cantact simultaneously, so that contact resistance reduces, so, when flowing through same electric current, the heating of contact will be greatly reduced, contact allows the electric current passed through to be greatly improved, and in original automatic trip loop, install the auxiliary reclay that a contact dynamic circuit connector capacity is bigger additional so that it is the normally opened contact that time delay disconnects replaces the normally opened contact of the time relay to access automatic trip loop.So in the case of contact is not switched on, under the effect of time delay normally opened contact, the most preferentially disconnect trip(ping) circuit, it is ensured that cut off trip(ping) circuit electric current, thus protect normally opened contact and will not singe and cling, it is to avoid the generation of line accident.
Accompanying drawing explanation
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is the circuit theory diagrams of the present invention.
Detailed description of the invention
Below by specific embodiment, further illustrate the present invention:
As shown in Figure 1: adjust relay tip pressure, the point contacted is crumpled deformation, the contact area making these points increases, make again more point cantact simultaneously, so that contact resistance reduces, so, when flowing through same electric current, the heating of contact will be greatly reduced, and contact allows the electric current passed through to be greatly improved.The auxiliary reclay KM that a contact dynamic circuit connector capacity is bigger is installed additional so that it is the normally opened contact that time delay disconnects replaces the normally opened contact of time relay KT to access automatic trip loop in original automatic trip loop.So in the case of QF contact is not switched on, under the effect of KM time delay normally opened contact, the most preferentially disconnect trip(ping) circuit, it is ensured that QF cuts off trip(ping) circuit electric current, thus the normally opened contact protecting KT will not be singed and be clung, it is to avoid the generation of line accident.
Claims (1)
1. the optimization method of a 10kV line-breaker closing circuit, including: in original automatic trip loop, install an auxiliary reclay additional, the normally opened contact making its time delay disconnect replaces the normally opened contact of the time relay to access automatic trip loop, it is characterized in that: described method also includes: adjust relay tip pressure, the point contacted is crumpled deformation, the contact area making these points increases, and makes again more point cantact simultaneously, so that contact resistance reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110381280.1A CN102497016B (en) | 2011-11-26 | 2011-11-26 | The optimization method of 10kV line-breaker closing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110381280.1A CN102497016B (en) | 2011-11-26 | 2011-11-26 | The optimization method of 10kV line-breaker closing circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102497016A CN102497016A (en) | 2012-06-13 |
| CN102497016B true CN102497016B (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110381280.1A Active CN102497016B (en) | 2011-11-26 | 2011-11-26 | The optimization method of 10kV line-breaker closing circuit |
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| CN (1) | CN102497016B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505305B (en) * | 2014-12-31 | 2016-11-30 | 广州供电局有限公司 | The design parameter of the total transmitting circuit of accident selects and method of testing |
| CN111308332B (en) * | 2019-11-07 | 2021-01-26 | 广东电网有限责任公司 | Voltage type relay protection tripping circuit contact resistance detection device |
| CN113160491B (en) * | 2021-04-07 | 2022-07-08 | 威胜电气有限公司 | Primary and secondary integration high-voltage charge control switching-on and switching-off control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1224890A1 (en) * | 1984-05-07 | 1986-04-15 | Калининградское Высшее Инженерное Училище Инженерных Войск Им.А.А.Жданова | Device for current protection of transformer against short circuit |
| CN2836229Y (en) * | 2005-05-11 | 2006-11-08 | 中国石化胜利油田有限公司临盘采油厂 | Automatic reclosing device of low voltage circuit breaker |
| CN101202180A (en) * | 2006-12-14 | 2008-06-18 | 贵州航天电器股份有限公司 | Method for improving load capacity of high-power relay |
| CN201294375Y (en) * | 2008-10-28 | 2009-08-19 | 鞍钢股份有限公司 | Circuit breaker opening and closing coil protection device |
-
2011
- 2011-11-26 CN CN201110381280.1A patent/CN102497016B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1224890A1 (en) * | 1984-05-07 | 1986-04-15 | Калининградское Высшее Инженерное Училище Инженерных Войск Им.А.А.Жданова | Device for current protection of transformer against short circuit |
| CN2836229Y (en) * | 2005-05-11 | 2006-11-08 | 中国石化胜利油田有限公司临盘采油厂 | Automatic reclosing device of low voltage circuit breaker |
| CN101202180A (en) * | 2006-12-14 | 2008-06-18 | 贵州航天电器股份有限公司 | Method for improving load capacity of high-power relay |
| CN201294375Y (en) * | 2008-10-28 | 2009-08-19 | 鞍钢股份有限公司 | Circuit breaker opening and closing coil protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102497016A (en) | 2012-06-13 |
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Address after: 473000 Henan City, Nanyang province people's North Road, No. 268 Applicant after: Nanyang Power Supply Company, State Grid Henan Electric Power Company Address before: 473000 Henan City, Nanyang province people's North Road, No. 268 Applicant before: Henan Electric Power Company Nanyang Power Supply Branch |
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