CN210517782U - Circuit breaker and anti-tripping circuit thereof - Google Patents
Circuit breaker and anti-tripping circuit thereof Download PDFInfo
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- CN210517782U CN210517782U CN201921534858.0U CN201921534858U CN210517782U CN 210517782 U CN210517782 U CN 210517782U CN 201921534858 U CN201921534858 U CN 201921534858U CN 210517782 U CN210517782 U CN 210517782U
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- circuit
- circuit breaker
- tripping
- control circuit
- terminal
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- 230000009191 jumping Effects 0.000 claims abstract description 54
- 238000012544 monitoring process Methods 0.000 claims description 12
- 230000002265 prevention Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 1
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Abstract
The utility model relates to a circuit breaker and prevent circuit of jumping thereof belongs to high tension switchgear technical field. The utility model discloses to prevent jumping control circuit and combined floodgate control circuit's negative pole binding post separately, the negative pole terminal that will prevent jumping control circuit causes the terminal row alone on, connect negative pole power through the terminal row, make the circuit breaker prevent jumping control circuit can dismantle or come into operation on the terminal row, when needing the circuit breaker to prevent jumping to withdraw from, only need break off on the terminal row and prevent jumping relay negative pole power, can be complete remove circuit breaker mechanism and prevent jumping control circuit, need not to tear down the circuit breaker mounting panel, remove from the circuit breaker internal circuit board and prevent jumping control circuit, can be convenient, swift drop into or withdraw from circuit breaker and prevent jumping the circuit.
Description
Technical Field
The utility model relates to a circuit breaker and prevent circuit of jumping thereof belongs to high tension switchgear technical field.
Background
The power industry is an important component of the entire national economy, and circuit breakers are important primary devices in power systems. The phenomenon that the circuit breaker is switched on again and is tripped repeatedly at the moment when the protection device acts on the circuit breaker to trip if the control switch is not reset or the contact is stuck in the switching-on process of the circuit breaker and the system is in permanent fault at the moment. If the circuit breaker takes place the jump, can cause the circuit breaker to cut off the ability and descend, cause the circuit breaker to damage, can cause the circuit breaker to explode the accident when serious, endanger equipment and personal safety, so prevent that the jump function is the essential part in the operation circuit, can avoid the emergence of circuit breaker jump phenomenon to extension power equipment life.
The anti-jump is to use the mechanical lock of the operating mechanism or take measures on the operating wire to prevent the jump, namely, the electrical anti-jump loop is needed to be added on the breaker body or the protection device. The method avoids a parasitic loop or a loss of an anti-tripping function caused by a mode of canceling an anti-tripping loop, only one anti-tripping loop on a protection device and the breaker is used in all places, but the anti-tripping loop is not used for certain time, so that the anti-tripping loop and the protection device of a derived mechanism are provided with the anti-tripping loop, and the selection between the anti-tripping loop in the protection device and the anti-tripping loop of the breaker body is realized through the change of a secondary line of the tripping loop and the closing loop.
The current anti-tripping circuit of the circuit breaker is shown in fig. 1 and comprises a closing control loop and an anti-tripping control loop, wherein the closing control loop and the anti-tripping control loop are arranged between a positive bus and a negative bus in parallel, the closing control loop comprises a closing relay HQ coil, a breaker auxiliary switch QF normally closed contact, a microswitch S1 and an anti-tripping relay K0 contact which are sequentially connected in series, and the anti-tripping control loop comprises an anti-tripping relay K0 coil, a current limiting resistor R0 and a breaker auxiliary switch QF normally open contact which are sequentially connected in series. If the breaker mounting plate needs to be detached when the anti-tripping control circuit of the breaker needs to be switched to the anti-tripping control circuit of the protection device, the anti-tripping control circuit is detached from the circuit board inside the breaker, and the circuit breaker anti-tripping control circuit is complex and inconvenient to withdraw.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a circuit breaker and prevent jumping circuit thereof to solve present circuit breaker and prevent jumping the input, withdraw from inconvenient problem.
The utility model provides a solve above-mentioned technical problem and provide a circuit is prevented jumping by circuit breaker, include combined floodgate control circuit and prevent jumping control circuit, combined floodgate control circuit one end be connected with anodal generating line, the other end is connected to first terminal through preventing jumping relay first contact, circuit breaker auxiliary switch normally closed contact and combined floodgate relay coil, prevent jumping control circuit one end and be connected with anodal generating line, the other end is connected to the second terminal through circuit breaker auxiliary switch normally open contact and prevent jumping relay coil, circuit breaker auxiliary switch normally open contact both ends have connect and prevent jumping relay second contact, first terminal and second terminal all are used for connecting the negative pole generating line.
The utility model discloses to prevent jumping control circuit and combined floodgate control circuit's negative pole binding post separately, the negative pole terminal that will prevent jumping control circuit causes the terminal row alone on, connect negative pole power through the terminal row, make the circuit breaker prevent jumping control circuit can dismantle or come into operation on the terminal row, when needing the circuit breaker to prevent jumping to withdraw from, only need break off on the terminal row and prevent jumping relay negative pole power, can be complete remove circuit breaker mechanism and prevent jumping control circuit, need not to tear down the circuit breaker mounting panel, remove from the circuit breaker internal circuit board and prevent jumping control circuit, can be convenient, swift drop into or withdraw from circuit breaker and prevent jumping the circuit.
Furthermore, in order to prevent reverse connection, reverse connection prevention diodes are connected in parallel at two ends of a coil of the anti-tripping relay of the anti-tripping control loop.
Furthermore, in order to prevent the current on the anti-tripping control loop from being too large, a current limiting resistor is also connected in series on the anti-tripping control loop.
Furthermore, in order to realize the monitoring of the anti-tripping circuit, the anti-tripping circuit further comprises a tripping monitoring circuit, and the normally closed contact of the anti-tripping relay and the auxiliary switch of the circuit breaker are connected in series on the tripping monitoring circuit.
Furthermore, a microswitch is also connected in series on the closing control loop.
The utility model also provides a circuit breaker, include the circuit breaker body and prevent jumping the circuit, prevent jumping the circuit including combined floodgate control circuit and prevent jumping the control circuit, combined floodgate control circuit one end be connected with anodal generating line, the other end is connected to first terminal through preventing jumping relay first contact, circuit breaker auxiliary switch normally closed contact and combined floodgate relay coil, prevent jumping control circuit one end and be connected with anodal generating line, the other end is connected to the second terminal through circuit breaker auxiliary switch normally open contact and prevent jumping relay coil, circuit breaker auxiliary switch normally open contact both ends have connect and prevent jumping relay second contact, first terminal and second terminal all are used for connecting the negative pole generating line.
The utility model discloses to prevent jumping control circuit and combined floodgate control circuit's negative pole binding post separately, the negative pole terminal that will prevent jumping control circuit causes the terminal row alone on, connect negative pole power through the terminal row, make the circuit breaker prevent jumping control circuit can dismantle or come into operation on the terminal row, when needing the circuit breaker to prevent jumping to withdraw from, only need break off on the terminal row and prevent jumping relay negative pole power, can be complete remove circuit breaker mechanism and prevent jumping control circuit, need not to tear down the circuit breaker mounting panel, remove from the circuit breaker internal circuit board and prevent jumping control circuit, can be convenient, swift drop into or withdraw from circuit breaker and prevent jumping the circuit.
Furthermore, in order to prevent reverse connection, reverse connection prevention diodes are connected in parallel at two ends of a coil of the anti-tripping relay of the anti-tripping control loop.
Furthermore, in order to prevent the current on the anti-tripping control loop from being too large, a current limiting resistor is also connected in series on the anti-tripping control loop.
Furthermore, in order to realize the monitoring of the anti-tripping circuit, the anti-tripping circuit further comprises a tripping monitoring circuit, and the normally closed contact of the anti-tripping relay and the auxiliary switch of the circuit breaker are connected in series on the tripping monitoring circuit.
Furthermore, a microswitch is also connected in series on the closing control loop.
Drawings
Fig. 1 is a circuit schematic diagram of an anti-trip circuit of a prior art circuit breaker;
fig. 2 is a circuit schematic diagram of the circuit breaker trip prevention circuit of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
Embodiments of an anti-trip circuit for a circuit breaker
The utility model discloses a circuit breaker is prevented jumping circuit is for conveniently realizing preventing jumping control circuit's input, withdraw from and the improvement on the basis of current circuit of preventing jumping, will prevent jumping control circuit and combined floodgate control circuit's negative pole binding post separately, will prevent jumping control circuit's negative pole terminal and lead to the terminal row alone on, connect negative pole power through the terminal row, make the circuit breaker prevent that jumping control circuit can dismantle or come into operation on the terminal row.
The utility model discloses a circuit breaker anti-tripping circuit includes combined floodgate control circuit and anti-tripping control circuit, combined floodgate control circuit one end is connected with anodal generating line, the other end is through preventing jumping relay first contact, circuit breaker auxiliary switch normally closed contact and combined floodgate relay coil are connected to first terminal, prevent jumping control circuit one end and be connected with anodal generating line, the other end is connected to the second terminal through circuit breaker auxiliary switch normally open contact and anti-tripping relay coil, circuit breaker auxiliary switch normally open contact both ends have connect anti-tripping relay second contact, first terminal and second terminal all are used for connecting the negative pole generating line. Specifically, as shown in fig. 2, a coil of the anti-trip relay K0, a current limiting resistor R0 and a normally open contact of the breaker auxiliary switch QF are sequentially connected in series between the first negative terminal and the positive bus, a normally open contact of the anti-trip relay K0 is connected in parallel at two ends of the normally open contact of the breaker auxiliary switch QF, and a closing relay HQ coil, a normally closed contact of the breaker auxiliary switch QF, a normally closed contact of the microswitch S1 and a normally closed contact of the anti-trip relay K0 are sequentially connected in series between the second negative terminal and the positive bus. The first negative terminal is connected to a negative bus bar (negative power supply) through a terminal block, and the second negative terminal may be directly connected to the negative bus bar or may be connected to the negative bus bar through another terminal block.
In order to avoid reverse connection of the anti-tripping control loop, two ends of the coil of the anti-tripping relay K0 are connected in parallel with an anti-tripping diode D0. In order to realize the monitoring of the anti-tripping circuit, a tripping monitoring circuit is also arranged, and the normally closed contact of the anti-tripping relay K0 and the normally closed contact of the breaker auxiliary switch QF are connected in series on the tripping monitoring circuit.
The 6-35 KV medium-voltage circuit breakers are all draw-out circuit breakers, namely handcart circuit breakers, the circuit breakers are shaken in and out through a handcart, S8 represents the test position of the handcart, and S9 represents the working position of the handcart; the circuit breakers require strings S8 and S9 to ensure that the circuit breakers can be closed whether in service or at the test station.
The working process of the anti-tripping circuit is as follows: when a closing instruction is received, the microswitch S1 is closed, a closing control loop is switched on, the circuit breaker is controlled to perform closing operation, if the circuit breaker jumps in the period, the normally open contact of the auxiliary switch QF of the circuit breaker is closed, the anti-tripping control loop is switched on, the coil of the anti-tripping relay K0 is electrified, the normally closed contact of the anti-tripping relay K0 in the closing control loop is disconnected, the normally open contact of the anti-tripping relay K0 in the anti-tripping control loop is closed, and tripping prevention in the closing process of the circuit breaker is achieved. Simultaneously, if circuit breaker protection device is from having electric anti-bounce return circuit, need withdraw from the anti-bounce control circuit of circuit breaker this moment, the utility model discloses when preventing the bounce control circuit and withdrawing from, only need tear open the anti-bounce control circuit negative pole terminal of connecting on the terminal row, the anti-bounce control circuit of circuit breaker mechanism of relieving that can be complete need not to tear open the circuit breaker mounting panel, removes anti-bounce control circuit from circuit breaker internal circuit board, can make things convenient for, swift drop into or withdraw from circuit breaker anti-bounce return circuit.
Embodiments of the Circuit breaker
The utility model discloses a circuit breaker includes the circuit breaker body and prevents the jump circuit, prevent the jump circuit including combined floodgate control circuit and prevent the jump control circuit, combined floodgate control circuit one end is connected with anodal generating line, the other end is through preventing the first contact of jump relay, circuit breaker auxiliary switch normally closed contact and combined floodgate relay coil are connected to first terminal, prevent jump control circuit one end and be connected with anodal generating line, the other end passes through circuit breaker auxiliary switch normally open contact and prevents the jump relay coil and be connected to the second terminal, circuit breaker auxiliary switch normally open contact both ends have connect and prevent the jump relay second contact, first terminal and second terminal all are used for connecting the negative pole generating line, the second terminal passes through the terminal row and connects the negative pole generating line. The specific structure of the anti-skip circuit has been described in detail in the embodiment of the anti-skip circuit, and is not described here again.
Claims (10)
1. The utility model provides a circuit breaker anti-tripping circuit, includes combined floodgate control circuit and anti-tripping control circuit, its characterized in that, combined floodgate control circuit one end and anodal bus connection, the other end is connected to first terminal through anti-tripping relay first contact, circuit breaker auxiliary switch normally closed contact and combined floodgate relay coil, anti-tripping control circuit one end and anodal bus connection, the other end is connected to the second terminal through circuit breaker auxiliary switch normally open contact and anti-tripping relay coil, and circuit breaker auxiliary switch normally open contact both ends have connect anti-tripping relay second contact, and first terminal and second terminal all are used for connecting the negative bus.
2. The circuit breaker trip prevention circuit of claim 1 wherein a reverse diode is connected in parallel across the trip prevention relay coil of the trip prevention control circuit.
3. The anti-tripping circuit for the circuit breaker according to claim 1 or 2, characterized in that a current-limiting resistor is connected in series to the anti-tripping control circuit.
4. The circuit breaker trip prevention circuit of claim 1 further comprising a trip monitoring circuit having the normally closed contacts of the trip prevention relay and the circuit breaker auxiliary switch connected in series.
5. The anti-tripping circuit of a circuit breaker according to claim 1, wherein a microswitch is connected in series with the closing control circuit.
6. The utility model provides a circuit breaker, includes the circuit breaker body and prevents the jump circuit, prevent the jump circuit including combined floodgate control circuit and prevent jumping control circuit, its characterized in that, combined floodgate control circuit one end and anodal bus connection, the other end is connected to first terminal through preventing jumping relay first contact, circuit breaker auxiliary switch normally closed contact and combined floodgate relay coil, prevent jumping control circuit one end and be connected with anodal bus, the other end is connected to the second terminal through circuit breaker auxiliary switch normally open contact and prevent jumping relay coil, circuit breaker auxiliary switch normally open contact both ends have connect and prevent jumping relay second contact, first terminal and second terminal all are used for connecting the negative bus.
7. The circuit breaker of claim 6, wherein the anti-tripping diode is connected in parallel with two ends of the coil of the anti-tripping relay of the anti-tripping control loop.
8. The circuit breaker as claimed in claim 6 or 7, wherein a current-limiting resistor is connected in series with the anti-tripping control circuit.
9. The circuit breaker of claim 6, wherein the anti-trip circuit further comprises a trip monitoring circuit, and the normally closed contact of the anti-trip relay and the auxiliary switch of the circuit breaker are connected in series to the trip monitoring circuit.
10. The circuit breaker as claimed in claim 6, wherein a micro switch is connected in series to the closing control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921534858.0U CN210517782U (en) | 2019-09-16 | 2019-09-16 | Circuit breaker and anti-tripping circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921534858.0U CN210517782U (en) | 2019-09-16 | 2019-09-16 | Circuit breaker and anti-tripping circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210517782U true CN210517782U (en) | 2020-05-12 |
Family
ID=70570123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921534858.0U Expired - Fee Related CN210517782U (en) | 2019-09-16 | 2019-09-16 | Circuit breaker and anti-tripping circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210517782U (en) |
-
2019
- 2019-09-16 CN CN201921534858.0U patent/CN210517782U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200512 |