CN102497016A - Optimization method for 10kV line breaker closing return circuit - Google Patents
Optimization method for 10kV line breaker closing return circuit Download PDFInfo
- Publication number
- CN102497016A CN102497016A CN2011103812801A CN201110381280A CN102497016A CN 102497016 A CN102497016 A CN 102497016A CN 2011103812801 A CN2011103812801 A CN 2011103812801A CN 201110381280 A CN201110381280 A CN 201110381280A CN 102497016 A CN102497016 A CN 102497016A
- Authority
- CN
- China
- Prior art keywords
- contact
- points
- return circuit
- normally
- opened
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Keying Circuit Devices (AREA)
Abstract
The invention discloses an optimization method for a 10kV line breaker closing return circuit, which adjusts contact point pressure of a breaker, enables contacted points to be crumpled and deformed, leads contact area of the contacted points to be enlarged, and enables more points to be contacted simultaneously, thereby enabling contact resistance to be reduced. When identical current passes through, heat radiation of the contact points is reduced greatly, current allowed to pass through the contact points is improved greatly, and an intermediate relay with large contact point normally-opened capacity is additionally installed in an original automatic tripping return circuit so as to enable a delayed disconnection normally-opened contact point to replace a normally-opened contact point of a time relay to be connected into the automatic tripping return circuit. Under the condition that the contact points are not opened and under the action of delayed normally-opened contact points, the tripping return circuit is not disconnected preferentially so as to guarantee disconnection of tripping return circuit current, thereby protecting the normally-opened contact points from singeing and sticking, and avoiding line accidents.
Description
Technical field
The invention belongs to high-tension line and detect the maintenance technology field, be specifically related to a kind of optimization method of 10kV line-breaker closing circuit.
Background technology
On the 10kV power circuit, all on the line pole in different locations, vacuum switch is installed.Its purpose is: on-load drawing, convenient maintenance; To a certain section circuit short-circuit protection is provided; Improve line walking efficient, reduce labour intensity.But at present, this circuit vacuum switch actual motion effect is very undesirable, and main cause is that time relay contact loose contact resistance is excessive, when electric current flows through contact, will produce arc light and make the rising of actual contact point temperature generate heat.If electric current is bigger, and conduction time when long, temperature just might be raised to the material softening point, makes its generation permanent deformation, its contact is singed cling, and trip(ping) circuit is charged always, causes under the non-failure conditions, and circuit breaker can not close a floodgate.Therefore, such problem has had a strong impact on the normal and stable operation of 10kV circuit.
Summary of the invention
The objective of the invention is to avoid above-mentioned weak point of the prior art, and provide a kind of effective protection circuit safety, effectively avoid the trip(ping) circuit fault, guarantee the optimization method of the 10kV line-breaker closing circuit of circuit stable operation.
Realize that the technical scheme that the object of the invention adopted is: a kind of optimization method of 10kV line-breaker closing circuit, said method comprises following measure:
A, adjustment relay tip pressure crumple distortion with the point that has contacted, and the contact area of these points is increased, and make more some contact simultaneously again, thereby contact resistance is reduced;
B, install in original automatic trip loop that a contact is moving to close the bigger auxiliary relay of capacity additional, normally opened contact that its time-delay is broken off replaces the normally opened contact of the time relay to insert the automatic trip loop.
Because the present invention has adjusted relay tip pressure, and the point that has contacted is crumpled distortion, the contact area of these points is increased; Make simultaneously more some contact again; Thereby contact resistance is reduced, like this, when flowing through same electric current; The heating of contact will reduce greatly; The electric current that contact allows to pass through will improve greatly, and installs in original automatic trip loop that a contact is moving to close the bigger auxiliary relay of capacity additional, and normally opened contact that its time-delay is broken off replaces the normally opened contact of the time relay to insert the automatic trip loop.Under the situation that contact is not opened, under the effect of time-delay normally opened contact, preferentially do not break off trip(ping) circuit like this, guarantee to cut off the trip(ping) circuit electric current, thereby protected unlikely the singing of normally opened contact to cling, avoided the generation of line accident.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
Through specific embodiment, further specify the present invention below:
As shown in Figure 1: adjustment relay tip pressure, the point that has contacted is crumpled distortion, the contact area of these points is increased; Make simultaneously more some contact again; Thereby contact resistance is reduced, like this, when flowing through same electric current; The heating of contact will reduce greatly, and the electric current that contact allows to pass through will improve greatly.Install in original automatic trip loop that a contact is moving to close the bigger auxiliary relay KM of capacity additional, normally opened contact that its time-delay is broken off replaces the normally opened contact of time relay KT to insert the automatic trip loop.Under the situation that the QF contact is not opened, under the effect of KM time-delay normally opened contact, preferentially do not break off trip(ping) circuit like this, guarantee that QF cuts off the trip(ping) circuit electric current, thereby protected unlikely the singing of normally opened contact of KT to cling, avoided the generation of line accident.
Claims (1)
1. the optimization method of a 10kV line-breaker closing circuit, it is characterized in that: said method comprises following measure:
A, adjustment relay tip pressure crumple distortion with the point that has contacted, and the contact area of these points is increased, and make more some contact simultaneously again, thereby contact resistance is reduced;
B, in original automatic trip loop, install an auxiliary relay additional, normally opened contact that its time-delay is broken off replaces the normally opened contact of the time relay to insert the automatic trip loop.
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 true CN102497016A (en) | 2012-06-13 |
| CN102497016B CN102497016B (en) | 2016-08-03 |
Family
ID=46188814
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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102497016B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505305A (en) * | 2014-12-31 | 2015-04-08 | 广州供电局有限公司 | Selecting and testing method for design parameters of general accident signaling loop |
| CN111308332A (en) * | 2019-11-07 | 2020-06-19 | 广东电网有限责任公司 | Voltage type relay protection tripping circuit contact resistance detection device |
| CN113160491A (en) * | 2021-04-07 | 2021-07-23 | 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 high power relay load capability |
| CN201294375Y (en) * | 2008-10-28 | 2009-08-19 | 鞍钢股份有限公司 | On-off coil protector for circuit breaker |
-
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 high power relay load capability |
| CN201294375Y (en) * | 2008-10-28 | 2009-08-19 | 鞍钢股份有限公司 | On-off coil protector for circuit breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505305A (en) * | 2014-12-31 | 2015-04-08 | 广州供电局有限公司 | Selecting and testing method for design parameters of general accident signaling loop |
| CN111308332A (en) * | 2019-11-07 | 2020-06-19 | 广东电网有限责任公司 | Voltage type relay protection tripping circuit contact resistance detection device |
| CN113160491A (en) * | 2021-04-07 | 2021-07-23 | 威胜电气有限公司 | Primary and secondary integration high-voltage charge control switching-on and switching-off control method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102497016B (en) | 2016-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016026210A1 (en) | Parameter miniature circuit breaker for cutting off power current | |
| CN102347177A (en) | Method for operating thermomagnetic circuit breaker | |
| KR20100080197A (en) | Current limit apparatus and fault current limiter using the same | |
| CN106329496A (en) | Rapid fusing device, rapid fusing control method, DC circuit breaker and control method thereof | |
| CN102983562A (en) | Current-limiting protector for electrical fire prevention | |
| CN103414167A (en) | State detection and protection method for circuit breaker opening and closing coil | |
| CN203278210U (en) | Busbar residual voltage maintaining device | |
| CN102497016A (en) | Optimization method for 10kV line breaker closing return circuit | |
| CN107481823B (en) | Lightning-proof tripping self-arc-extinguishing parallel gap system for power distribution network | |
| CN202353174U (en) | Combined protector of high-voltage current limiting fuse | |
| CN202535044U (en) | Breaker switching-on and tripping control circuit | |
| CN201877814U (en) | Controller for circuit breaker | |
| CN103943430A (en) | Combined type universal air circuit breaker for both alternating-current circuit and direct-current circuit and arc extinction method of combined type universal air circuit breaker | |
| CN205724841U (en) | A kind of reserve protection for surge protector | |
| CN102593787B (en) | Low-current disjunction device and disjunction method for direct-current distribution system | |
| CN202373539U (en) | Movable contact structure with high breaking capacity | |
| CN105914703B (en) | A kind of lightning protection intelligent back-up protection device and its guard method | |
| CN204303728U (en) | A kind of miniature circuit breaker with high throughflow lightning current ability | |
| Yang et al. | Shipping distribution networks short circuit selective protection method base on fast recovery power breaker | |
| CN201918328U (en) | Arc striking structure of miniature circuit breaker | |
| CN105470066A (en) | Self-recovery type closing electromagnet | |
| CN204558881U (en) | A kind of gap discharge device with thermal tripping mechanism | |
| CN203301120U (en) | Burnt-up proof automatic protection device for high voltage circuit breaker opening and closing coil | |
| CN204271031U (en) | A kind of from energy storage high-voltage drop type fuse cutout | |
| CN201336569Y (en) | Novel back-up protection device for surge protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
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 |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |