CN203166509U - Contactor capable of avoiding open-phase operation of power system for transformer station - Google Patents
Contactor capable of avoiding open-phase operation of power system for transformer station Download PDFInfo
- Publication number
- CN203166509U CN203166509U CN 201320125337 CN201320125337U CN203166509U CN 203166509 U CN203166509 U CN 203166509U CN 201320125337 CN201320125337 CN 201320125337 CN 201320125337 U CN201320125337 U CN 201320125337U CN 203166509 U CN203166509 U CN 203166509U
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- CN
- China
- Prior art keywords
- contactor
- phase
- electrically connected
- transformer station
- open
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Abstract
The utility model discloses a contactor capable of avoiding open-phase operation of a power system for a transformer station, which solves the problem that station equipment is likely to be damaged due to the fact that a prior contactor of a normal operation control circuit of a power system of a transformer station can still be actuated under open-phase condition. The contactor comprises a three-phase contactor (1) and a fall-off switch fuse (3) electrically connected with the three-phase contactor, one end of a normal-open intermediate contactor (4) is electrically connected with a phase A of the three-phase contactor (1), the other end of the normal-open intermediate contactor (4) is electrically connected with one end of a control coil (2) of the three-phase contactor (1), the other end of the control coil (2) of the three-phase contactor is electrically connected with a phase C of the three-phase contactor (1), one end of a control coil (5) of the normal-open intermediate contactor (4) is electrically connected with a phase B of the three-phase contactor (1), and the other end of the control coil (5) of the normal-open intermediate contactor (4) is electrically connected with a ground wire N (6). The contactor capable of avoiding open-phase operation of the power system for the transformer station can ensure safe and reliable operation of equipment of the transformer station.
Description
Technical field
The utility model relates to the contactor in a kind of transformer station station using electricity system control loop.
Background technology
At present, the adhesive that transformer station's station using electricity system normally moves the control loop contactor is to finish by being connected the power control loop that exchanges the 380V between A phase and the C phase, the contactor of this structure is when alternating-current B phase dead electricity, still normally adhesive, thereby cause transformer station station using electricity system the phenomenon of phase-deficient operation to occur, cause the easy damage of the three-phase equipments such as main transformer blower fan, operating electrical machines, water pump, circulating pump of transformer station's station usefulness easily.
Summary of the invention
The utility model provides a kind of contactor of avoiding transformer station station using electricity system phase-deficient operation, but has solved contactor that existing transformer station station using electricity system normally the moves control loop adhesive problem that causes the transformer station station to be damaged easily with equipment still when phase shortage.
The utility model is to solve above technical problem by the following technical programs:
A kind of contactor of avoiding transformer station's station using electricity system phase-deficient operation, comprise the three-phase contactor and the drop switch fuse that are electrically connected, often opening an end of indirect tentaculum and the A of three-phase contactor is electrically connected, the other end of often driving the indirect tentaculum is electrically connected with an end of the control coil of three-phase contactor, the other end of the control coil of three-phase contactor and the C of three-phase contactor are electrically connected, often open the end of control coil of indirect tentaculum and the B of three-phase contactor and be electrically connected, the other end of often opening the control coil of indirect tentaculum is electrically connected with ground wire N.
The utility model can effectively prevent the operation of using electricity system when phase shortage of standing, and guarantees the safe operation of equipment of transformer station station.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
A kind of contactor of avoiding transformer station's station using electricity system phase-deficient operation, comprise the three-phase contactor 1 and the drop switch fuse 3 that are electrically connected, often opening an end of indirect tentaculum 4 and the A of three-phase contactor 1 is electrically connected, the other end of often driving indirect tentaculum 4 is electrically connected with an end of the control coil 2 of three-phase contactor 1, the other end of the control coil 2 of three-phase contactor 1 and the C of three-phase contactor 1 are electrically connected, often open the end of control coil 5 of indirect tentaculum 4 and the B of three-phase contactor 1 and be electrically connected, the other end of often opening the control coil 5 of indirect tentaculum 4 is electrically connected with ground wire N6.
The utility model is normally to move at transformer station station using electricity system to add a pair of normal opened contact in the control loop and namely often drive indirect tentaculum 4, namely between contactor adhesive control power supply A phase, C phase, add a normal opened contact and namely use an auxiliary relay, get station electricity consumption B phase 220kV power supply.When B phase phase shortage, auxiliary relay is failure to actuate, and normal opened contact is not closed, the alternate loop that can not form of A, C, and three-phase contactor 1 just can adhesive, and the station using electricity system can not moved under the situation of phase shortage, has protected station equipment.
Claims (1)
1. the contactor that can avoid transformer station station using electricity system phase-deficient operation, comprise the three-phase contactor (1) and the drop switch fuse (3) that are electrically connected, it is characterized in that, often opening an end of indirect tentaculum (4) and the A of three-phase contactor (1) is electrically connected, the other end of often driving indirect tentaculum (4) is electrically connected with an end of the control coil (2) of three-phase contactor (1), the other end of the control coil (2) of three-phase contactor (1) and the C of three-phase contactor (1) are electrically connected, often open the end of control coil (5) of indirect tentaculum (4) and the B of three-phase contactor (1) and be electrically connected, often open the other end and ground wire N(6 of the control coil (5) of indirect tentaculum (4)) be electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125337 CN203166509U (en) | 2013-03-19 | 2013-03-19 | Contactor capable of avoiding open-phase operation of power system for transformer station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125337 CN203166509U (en) | 2013-03-19 | 2013-03-19 | Contactor capable of avoiding open-phase operation of power system for transformer station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166509U true CN203166509U (en) | 2013-08-28 |
Family
ID=49027669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320125337 Expired - Lifetime CN203166509U (en) | 2013-03-19 | 2013-03-19 | Contactor capable of avoiding open-phase operation of power system for transformer station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203166509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063491A (en) * | 2018-01-01 | 2018-05-22 | 国网宁夏电力有限公司吴忠供电公司 | Forced oil-circulated air-cooled transformer cooling control system |
-
2013
- 2013-03-19 CN CN 201320125337 patent/CN203166509U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063491A (en) * | 2018-01-01 | 2018-05-22 | 国网宁夏电力有限公司吴忠供电公司 | Forced oil-circulated air-cooled transformer cooling control system |
| CN108063491B (en) * | 2018-01-01 | 2024-01-23 | 国网宁夏电力有限公司吴忠供电公司 | Cooling control system of forced oil circulation air-cooled transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |