CN219739582U - Improved generation permanent magnet circuit breaker closing control circuit - Google Patents
Improved generation permanent magnet circuit breaker closing control circuit Download PDFInfo
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- CN219739582U CN219739582U CN202320931675.2U CN202320931675U CN219739582U CN 219739582 U CN219739582 U CN 219739582U CN 202320931675 U CN202320931675 U CN 202320931675U CN 219739582 U CN219739582 U CN 219739582U
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- switching
- power supply
- contact
- permanent magnet
- contactor
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- 238000012544 monitoring process Methods 0.000 claims abstract description 38
- 230000005389 magnetism Effects 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model relates to the field of 6-35kV medium-voltage distribution network KYN centrally-mounted switch cabinet electricity, in particular to an improved permanent magnet circuit breaker closing control loop; the control loop comprises a control power supply, a switching-on element, a switching-on self-holding contact, a breaker auxiliary contact, a switching-on power supply monitoring contact and a switching-on contactor; the switching-on loop comprises a switching-on power supply, a switching-on power supply monitoring relay, a switching-on contactor contact and a permanent magnet switching-on mechanism; according to the utility model, the monitoring function of whether the switching-on power supply is normal or not is achieved by adding the switching-on power supply monitoring relay in the switching-on loop; the normally open contact driven by the switching-on power supply monitoring relay is connected to the circuit breaker control loop, so that the switching-on control loop is reliably disconnected when the switching-on power supply is abnormal, and the switching-on contactor is protected from burning due to long-time electrification.
Description
Technical Field
The utility model relates to the field of 6-35kV medium-voltage distribution network KYN type centrally-mounted switch cabinet electricity, in particular to an improved permanent magnet circuit breaker closing control loop.
Background
The 6-35kV medium-voltage distribution network commonly uses a KYN type middle-set switch cabinet, a configured permanent magnet circuit breaker closing control loop is divided into a control loop and a closing loop, and the circuit breaker closing can be realized only by operating the control loop to drive the permanent magnet closing mechanism again when all parts of the closing loop are intact. When equipment causes such as forgetting to put into a switching-on power supply insurance or insurance failure cause a switching-on loop power failure in field operation, the switching-on of the operation circuit breaker is unsuccessful at the moment, but a switching-on contactor in a control loop can be burnt out in a long-time electrified way due to the conduction of a switching-on self-holding loop, so that unnecessary equipment loss is caused, and maintenance cost is increased.
Disclosure of Invention
The utility model aims to provide an improved permanent magnet circuit breaker switching-on control loop, which solves the problem that a switching-on contactor in the control loop is burnt off in a long-time electrified way due to the fact that a switching-on power supply is disconnected by operating the circuit breaker, and avoids unnecessary equipment loss and increase of maintenance cost.
The utility model relates to an improved permanent magnet circuit breaker switching-on control loop which comprises a control loop, wherein the control loop comprises a control power supply, a switching-on element, an auxiliary contact of a circuit breaker, a switching-on power supply monitoring contact and a switching-on contactor, the switching-on element, the switching-on power supply monitoring contact of the auxiliary contact of the circuit breaker and the switching-on contactor are connected between the positive pole and the negative pole of the control power supply, one end of the switching-on element is connected on the positive pole of the control power supply, one end of the switching-on element, which is far away from the control power supply, is connected with one end of the auxiliary contact in series, one end of the auxiliary contact, which is far away from the auxiliary contact, is connected with one end of the switching-on contactor in series, and one end of the switching-on contactor, which is far away from the switching-on power supply monitoring contact, is connected with the negative pole of the control power supply in series.
Further, the control loop comprises an operation loop closing self-holding contact which is connected with the closing element in parallel.
Further, the permanent magnet switching-on mechanism comprises a switching-on loop, the switching-on loop comprises a switching-on power supply, switching-on contactor contacts and a permanent magnet switching-on mechanism, two switching-on contactor contacts are arranged, the two switching-on contactor contacts are respectively connected in series at two ends of the permanent magnet switching-on mechanism, and one ends, far away from the permanent magnet switching-on mechanism, of the two switching-on contactor contacts are respectively connected to the positive pole and the negative pole of the switching-on power supply.
Further, the switching-on loop comprises a switching-on power supply monitoring relay, two ends of the switching-on power supply monitoring relay are respectively connected to the positive pole and the negative pole of the switching-on power supply, and the switching-on power supply monitoring relay is connected with the contacts of the two switching-on contactors and a permanent magnet switching-on mechanism in parallel.
The beneficial effects of the utility model are as follows: the control loop comprises a control power supply, a switching-on element, a switching-on self-holding contact, a breaker auxiliary contact, a switching-on power supply monitoring contact and a switching-on contactor; the switching-on loop comprises a switching-on power supply, a switching-on power supply monitoring relay, a switching-on contactor contact and a permanent magnet switching-on mechanism; according to the utility model, the monitoring function of whether the switching-on power supply is normal or not is achieved by adding the switching-on power supply monitoring relay in the switching-on loop; the normally open contact driven by the switching-on power supply monitoring relay is connected to the circuit breaker control loop, so that the switching-on control loop is reliably disconnected when the switching-on power supply is abnormal, and the switching-on contactor is protected from burning due to long-time electrification.
Drawings
FIG. 1 is an electrical schematic diagram of a control loop of the present utility model;
fig. 2 is an electrical schematic diagram of a closing circuit according to the present utility model.
In the figure: 1. controlling a power supply; 2. a closing element; 3. the operation loop is closed with a self-holding contact; 4. auxiliary contacts of the circuit breaker; 5. a closing power supply monitoring contact; 6. a closing contactor; 7. a closing power supply; 8. a switching-on power supply monitoring relay; 9. a closing contactor contact; 10. permanent magnet closing mechanism.
Detailed Description
As shown in fig. 1 and 2, the switching-on control loop of the improved permanent magnet circuit breaker of the utility model comprises a control loop and a switching-on loop, wherein the control loop comprises a control power supply 1, a switching-on element 2, a switching-on self-holding contact 3, an auxiliary contact 4 of the circuit breaker, a switching-on power supply monitoring contact 5 and a switching-on contactor 6, the switching-on element 2, the switching-on power supply monitoring contact 5 of the auxiliary contact 4 of the circuit breaker and the switching-on contactor 6 are connected between the positive pole and the negative pole of the control power supply 1, one end of the switching-on element 2 is connected on the positive pole of the control power supply 1, one end of the switching-on element 2, which is far away from the control power supply 1, is connected with one end of the auxiliary contact 4, which is far away from the auxiliary contact 2, is connected with one end of the switching-on power supply monitoring contact 5, one end of the switching-on contactor 6, which is far from the switching-on power supply monitoring contact 5, is connected with the negative pole of the control power supply 1, and the operation loop is connected with the switching-on element 2. And a current circulation path is formed between two poles of the control power supply 1 through a control loop, so that the switching-on contactor of the permanent magnet breaker is controlled.
The switching-on loop comprises a switching-on power supply 7, a switching-on power supply monitoring relay 8, switching-on contactor contacts 9 and a permanent magnet switching-on mechanism 10, wherein two switching-on contactor contacts 9 are arranged, the two switching-on contactor contacts 9 are respectively connected in series at two ends of the permanent magnet switching-on mechanism 10, one ends of the two switching-on contactor contacts 9, which are far away from the permanent magnet switching-on mechanism 10, are respectively connected to the positive pole and the negative pole of the switching-on power supply 7, two ends of the switching-on power supply monitoring relay 8 are respectively connected to the positive pole and the negative pole of the switching-on power supply 7, and the switching-on power supply monitoring relay 8 is connected with the two switching-on contactor contacts 9 and the permanent magnet switching-on mechanism 10 in parallel. And a current circulation path is formed between two poles of the switching-on power supply 7 through a switching-on loop, so that the action switching-on of the permanent magnet switching-on mechanism is realized.
The working principle of the utility model is as follows:
the breaker closing operation procedure under the normal conditions of the control power supply 1 and the closing power supply 7 is as follows: when the breaker is in a breaking state, an auxiliary contact 4 of the breaker is in a closing position, an operation loop closing self-holding contact 3 is in a breaking position, a closing power monitoring relay 8 acts to drive a closing power monitoring relay contact 5 to act and close, at the moment, the breaker is closed, an operation closing element 2 is required to be turned on, meanwhile, the operation loop closing self-holding contact 3 automatically closes and keeps a closing instruction not to be broken, a coil of a closing contactor 6 drives a closing contactor contact 9 to act and close, a permanent magnet closing mechanism 10 in the closing loop is electrified, the breaker mechanism is finally driven to close, the auxiliary contact 4 of the breaker acts to open a control loop after closing is completed, the operation loop closing self-holding contact 3 automatically returns to an opening state, and a breaker closing process is completed.
The switching-on operation process of the circuit breaker under the condition that the control power supply 1 is normal but the switching-on power supply 7 fails is as follows: when the circuit breaker is in a breaking state, the auxiliary contact 4 of the circuit breaker is in a closing position, the self-holding contact 3 of the switching-on self-closing operation circuit is in an opening position, the switching-on power supply monitoring relay 8 does not act, so that the switching-on power supply monitoring relay contact 5 is in the opening position, the circuit breaker is switched on at the moment, even if the switching-on element 2 is operated to be switched on, one end of a coil of the switching-on contactor 6 is disconnected by the power supply monitoring relay contact 5 and cannot be electrified, and therefore the switching-on contactor 6 cannot be electrified and burnt for a long time due to the fault of the switching-on power supply 7.
Claims (4)
1. An improved generation permanent magnetism circuit breaker closing control circuit which characterized in that: including control circuit, control circuit is including control power supply (1), switch-on component (2), circuit breaker auxiliary contact (4), switch-on power supply monitoring contact (5) and switch-on contactor (6), switch-on component (2), circuit breaker auxiliary contact (4) switch-on power supply monitoring contact (5) and switch-on contactor (6) are all connected between control power supply (1) positive pole and negative pole, switch-on component (2) one end is connected on control power supply (1) positive pole, switch-on component (2) keep away from the one end of control power supply (1) and establish ties with the one end of auxiliary contact (4), the one end that auxiliary contact (4) kept away from switch-on component (2) is established ties with the one end of switch-on power supply monitoring contact (5), the one end that auxiliary contact (4) was kept away from to switch-on power supply monitoring contact (5) is established ties with the one end of switch-on contactor (6), the one end that switch-on contactor (6) kept away from switch-on power supply monitoring contact (5) is established ties with the negative pole of control power supply (1).
2. The improved permanent magnet circuit breaker closing control circuit of claim 1, wherein: the control loop comprises an operation loop closing self-holding contact (3), and the operation loop closing self-holding contact (3) is connected with the closing element (2) in parallel.
3. The improved permanent magnet circuit breaker closing control loop of claim 2, wherein: the switching-on circuit comprises a switching-on power supply (7), switching-on contactor contacts (9) and a permanent magnet switching-on mechanism (10), wherein the switching-on contactor contacts (9) are arranged in two, the two switching-on contactor contacts (9) are respectively connected in series at two ends of the permanent magnet switching-on mechanism (10), and one ends, far away from the permanent magnet switching-on mechanism (10), of the two switching-on contactor contacts (9) are respectively connected to the positive electrode and the negative electrode of the switching-on power supply (7).
4. An improved permanent magnet circuit breaker closing control loop according to claim 3, wherein: the switching-on loop comprises a switching-on power supply monitoring relay (8), two ends of the switching-on power supply monitoring relay (8) are respectively connected to the positive electrode and the negative electrode of the switching-on power supply (7), and the switching-on power supply monitoring relay (8) is connected with two switching-on contactor contacts (9) and a permanent magnet switching-on mechanism (10) in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320931675.2U CN219739582U (en) | 2023-04-23 | 2023-04-23 | Improved generation permanent magnet circuit breaker closing control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320931675.2U CN219739582U (en) | 2023-04-23 | 2023-04-23 | Improved generation permanent magnet circuit breaker closing control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219739582U true CN219739582U (en) | 2023-09-22 |
Family
ID=88029835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320931675.2U Active CN219739582U (en) | 2023-04-23 | 2023-04-23 | Improved generation permanent magnet circuit breaker closing control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219739582U (en) |
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2023
- 2023-04-23 CN CN202320931675.2U patent/CN219739582U/en active Active
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