CN202678949U - 110kv circuit protection system capable of avoiding multi-reclosing failures - Google Patents
110kv circuit protection system capable of avoiding multi-reclosing failures Download PDFInfo
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- CN202678949U CN202678949U CN 201220376566 CN201220376566U CN202678949U CN 202678949 U CN202678949 U CN 202678949U CN 201220376566 CN201220376566 CN 201220376566 CN 201220376566 U CN201220376566 U CN 201220376566U CN 202678949 U CN202678949 U CN 202678949U
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- circuit breaker
- circuit
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Abstract
The utility model discloses a 110kv circuit protection system capable of avoiding multi-reclosing failures. The110kv circuit protection system comprises a circuit breaker and an automatic recloser, wherein the automatic recloser comprises a closing acting mechanism and a closing coil; the 110kv circuit protection system further comprises an energy storage circuit, a micro-control circuit and an energy storage switch node, wherein the energy storage switch node is connected with the energy storage circuit; the micro-control circuit, the energy storage circuit and the closing coil are connected in sequence; an auxiliary switch node is arranged on the circuit breaker, and the output end of the auxiliary switch node of the circuit breaker is respectively connected with the energy storage switch node and the current input end of the energy storage circuit; the 110kv circuit protection system further comprises a skip relay, wherein the skip relay is respectively connected with the energy storage switch node and the micro-control circuit; when the 110kv circuit protection system disclosed by the utility model has a permanent failure, the circuit breaker can not generate a continuous reclosing condition, thereby not only greatly improving the reliability of the power system, but also greatly reducing the equipment damage and the economic loss caused by the multi-reclosing failures and improving the reliability of a power grid.
Description
Technical field
The utility model relates to electronic system automation protection field, particularly can avoid the 110kv route protection system of multiple shot reclosing fault.
Background technology
At present; in the 110kv power circuit; in order to guarantee the normal operation of electric power system; electric power system is effectively protected; being provided with circuit breaker in power circuit effectively protects the operation of circuit; when breaking down, electric power system is disconnected; prevent from causing larger economic loss because fault causes the infringement to electric power system, and in present 110kv circuit; the operating experience explanation of electric power system; the overhead transmission line overwhelming majority's fault all is instantaneity, and permanent fault is less than 10%, therefore after excising short trouble by the relaying protection action; electric arc is with automatic distinguishing, and the insulation of short circuit place can recover automatically in most cases.Therefore; automatically circuit breaker is overlapped; not only improved the safety and reliability of power supply, reduced loss of outage, but also improved the transient state level of electric power system; increased the power transmission capacity of high-tension line; also can correct because the mistrip that circuit breaker or protective relaying device cause can system resume operation when breaking down voluntarily, exempt manual operation; it is high that it recovers efficient, reduced widely because the economic loss that transient fault causes.If but the fault that produces in the power circuit is permanent fault; automatic reclosing will constantly close a floodgate, disconnect; can bring larger impact to circuit; need manually it to be identified; carrying out manual operation disconnects power circuit; along with the comprehensive popularization from the power transformation protection system of unattended operation, need to avoid occurring above-mentioned situation.
Summary of the invention
For addressing the above problem, the purpose of this utility model is to provide a kind of 110kv route protection system that avoids the multiple shot reclosing fault.
The technical scheme that the invention for solving the technical problem adopts is:
Can avoid the 110kv route protection system of multiple shot reclosing fault; comprise being arranged on the circuit main line and be used for the circuit breaker that main line is protected and be connected to being used for automatic reclosing that circuit breaker is closed a floodgate again on the circuit breaker; described automatic reclosing comprises be used to the feed motion mechanism that killer switch is closed a floodgate and makes feed motion mechanism carry out the closing coil of feed motion; also being included as closing coil provides the accumulator of switching current; accumulator is controlled the micro-control circuit of output and the energy storage switching node of reflection accumulator energy storage state; described energy storage switching node is connected with accumulator; described micro-control circuit; accumulator is connected with closing coil and is in succession connected; described circuit breaker is provided with the auxiliary switch for circuit breaker node that is used to indicate circuit breaker switch state; described auxiliary switch for circuit breaker node output is connected current input terminal with the energy storage switching node respectively and is connected with accumulator; also comprise the jumping position relay that is used to indicate the circuit breaker folding condition, described jumping position relay links to each other with micro-control circuit with the energy storage switching node respectively.
During system works; when circuit breaker detects main line and breaks down; sub-switching operation opens circuit; power circuit is protected; and the auxiliary switch for circuit breaker node on the circuit breaker is because the sub-switching operation of circuit breaker and closure; accumulator in the automatic reclosing is communicated with the beginning energy storage; at this moment the energy storage switching node is in open mode; thereby jump the not energising of position relay interior loop; therefore do not output signal in the micro-control circuit; micro-control circuit is learnt the circuit breaker off state according to this information, satisfies the condition of closing a floodgate, after the accumulator charging is finished; micro-control circuit is judged the combined floodgate condition according to previous state; the control accumulator is toward the closing coil electric energy transmitting, and therefore produce magnetic attraction makes the feed motion mechanism action to closing coil, thereby circuit breaker is closed a floodgate.
Accumulator charges and successfully can make the energy storage switching node closed, allow and jump the interior coil electricity of position relay, jump position relay output current signal to micro-control circuit, if what occur is permanent fault, circuit breaker is separating brake immediately, but at this moment therefore micro-control circuit is judged as the combined floodgate condition that do not meet owing to receive the output current of jumping the position relay, therefore reclosing has at once not at this moment been avoided the electric power system damage that causes because of the continuous reclosing of circuit breaker.Circuit breaker again close a floodgate stable after, the auxiliary switch for circuit breaker node disconnects, the energy storage switching node is just replied initial condition again.
Further, also comprise the rear relay that closes that is used to indicate circuit breaker handling position state, the described output that closes rear relay links to each other with micro-control circuit.Micro-control circuit is by closing the position of rear relay test circuit breaker handle, and when the people operated combined floodgate, micro-control circuit was judged as and does not satisfy the combined floodgate element.
The beneficial effects of the utility model are: the 110kv route protection system of the multiple shot reclosing the avoided fault that the utility model adopts, energy automatic reclosing when transient fault occurring, improved the safety and reliability of power supply, reduced loss of outage, can when breaking down, system resume operation voluntarily, exempt manual operation, it is high that it recovers efficient, reduced widely because the economic loss that transient fault causes; And micro-control circuit is controlled combined floodgate according to circuit-breaker status, when permanent fault occurs, the situation of continuous reclosing can not appear in circuit breaker, do not need manually to carry out troubleshooting, not only improved widely the reliability of electric power system, and greatly reduced device damage and the economic loss of bringing owing to the multiple shot reclosing fault, improved the reliability of electrical network.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing and example.
Fig. 1 is system principle diagram of the present utility model.
Embodiment
With reference to shown in Figure 1; the 110kv route protection system that avoids the multiple shot reclosing fault of the present utility model; comprise being arranged on the circuit main line and be used for the circuit breaker 1 that main line is protected and be connected to being used for automatic reclosing that circuit breaker 1 is closed a floodgate again on the circuit breaker 1; described automatic reclosing comprises be used to the feed motion mechanism 3 that circuit breaker 1 switch is closed a floodgate and makes feed motion mechanism 3 carry out the closing coil 4 of feed motion; also being included as closing coil 4 provides the accumulator 5 of switching current; accumulator 5 is controlled the micro-control circuit 6 of output and the energy storage switching node 7 of reflection accumulator 5 energy storage states; described energy storage switching node 7 is connected with accumulator 5; described micro-control circuit 6; accumulator 5 is connected with closing coil successively and is in succession connected; described circuit breaker 1 is provided with the auxiliary switch for circuit breaker node 2 that is used to indicate circuit breaker 1 on off state; described auxiliary switch for circuit breaker node 2 outputs are connected with the current input terminal that energy storage switching node 7 is connected with accumulator respectively; also comprise the jumping position relay 8 that is used to indicate circuit breaker 1 folding condition, described jumping position relay 8 links to each other with micro-control circuit 6 with energy storage switching node 7 respectively.
During system works; when circuit breaker 1 detects main line and breaks down; sub-switching operation opens circuit; power circuit is protected; and the auxiliary switch for circuit breaker node 2 on the circuit breaker 1 is because the sub-switching operation of circuit breaker 1 and closure; accumulator 5 in the automatic reclosing is communicated with the beginning energy storage; at this moment energy storage switching node 7 is in open mode; thereby jump the not energising of position relay 8 interior loop; therefore do not output signal in the micro-control circuit 6; micro-control circuit 6 is learnt circuit breaker 1 off state according to this information, satisfies the condition of closing a floodgate, after accumulator 5 chargings are finished; micro-control circuit 6 is judged the combined floodgate condition according to previous state; control accumulator 5 is toward closing coil 4 electric energy transmittings, and therefore closing coil 4 produces magnetic attraction and make 3 actions of feed motion mechanism, thereby circuit breaker 1 is closed a floodgate.
Accumulator 5 charges successfully can make energy storage switching node 7 closures, allow and jump coil electricity in the position relay 8, jump position relay 8 output current signals to micro-control circuit 6, if what occur is permanent fault, circuit breaker 1 is separating brake immediately, but at this moment therefore micro-control circuit 6 is judged as the combined floodgate condition that do not meet owing to receive the output current of jumping position relay 8, therefore reclosing has at once not at this moment been avoided the electric power system damage that causes because of circuit breaker 1 continuous reclosing.Circuit breaker 1 again close a floodgate stable after, auxiliary switch for circuit breaker node 2 disconnects, energy storage switching node 7 is just replied initial condition again.
The 110kv route protection system of the multiple shot reclosing the avoided fault that the utility model adopts, energy automatic reclosing when transient fault occurring, improved the safety and reliability of power supply, reduced loss of outage, can when breaking down, system resume operation voluntarily, exempt manual operation, it is high that it recovers efficient, reduced widely because the economic loss that transient fault causes; And micro-control circuit 6 is controlled combined floodgate according to circuit breaker 1 state, when permanent fault occurs, the situation of continuous reclosing can not appear in circuit breaker 1, do not need manually to carry out troubleshooting, not only improved widely the reliability of electric power system, and greatly reduced device damage and the economic loss of bringing owing to the multiple shot reclosing fault, improved the reliability of electrical network.
Further, comprise also being used to indicate the rear relay 9 of closing of circuit breaker 1 handling position state that the described output that closes rear relay 9 links to each other with micro-control circuit 6.Micro-control circuit 6 detects the position of circuit breaker 1 handle by closing rear relay 9, when the people operated combined floodgate, micro-control circuit 6 was judged as and does not satisfy the combined floodgate element.
The above is preferred embodiment of the present utility model, and the utility model is not limited to above-mentioned execution mode, as long as it reaches technique effect of the present utility model with identical means, all should belong to protection range of the present utility model.
Claims (2)
1. can avoid the 110kv route protection system of multiple shot reclosing fault; comprise being arranged on and be used for the circuit breaker (1) that main line is protected on the circuit main line and be connected to the upper automatic reclosing for circuit breaker (1) is closed a floodgate again of circuit breaker (1); it is characterized in that: described automatic reclosing comprises be used to the feed motion mechanism (3) that circuit breaker (1) switch is closed a floodgate and makes feed motion mechanism (3) carry out the closing coil (4) of feed motion; also being included as closing coil (4) provides the accumulator (5) of switching current; accumulator (5) is controlled the micro-control circuit (6) of output and the energy storage switching node (7) of reflection accumulator (5) energy storage state; described energy storage switching node (7) is connected with accumulator (5); described micro-control circuit (6); accumulator (5) is connected 4 with closing coil) in succession connect successively; described circuit breaker (1) is provided with the auxiliary switch for circuit breaker node (2) that is used to indicate circuit breaker (1) on off state; described auxiliary switch for circuit breaker node (2) output is connected 5 with energy storage switching node (7) with accumulator respectively) current input terminal be connected; also comprise the jumping position relay (8) that is used to indicate circuit breaker (1) folding condition, described jumping position relay (8) links to each other with micro-control circuit (6) with energy storage switching node (7) respectively.
2. the 110kv route protection system that avoids the multiple shot reclosing fault according to claim 1; it is characterized in that: also comprise be used to indicate circuit breaker (1) handling position state close rear relay (9), the described output that closes rear relay (9) links to each other with micro-control circuit (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220376566 CN202678949U (en) | 2012-07-30 | 2012-07-30 | 110kv circuit protection system capable of avoiding multi-reclosing failures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220376566 CN202678949U (en) | 2012-07-30 | 2012-07-30 | 110kv circuit protection system capable of avoiding multi-reclosing failures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678949U true CN202678949U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220376566 Expired - Fee Related CN202678949U (en) | 2012-07-30 | 2012-07-30 | 110kv circuit protection system capable of avoiding multi-reclosing failures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617922A (en) * | 2013-12-10 | 2014-03-05 | 戴顿（重庆）高压开关有限公司 | Universal alternating current and direct current trip detection circuit used for vacuum circuit breaker |
| CN104459466A (en) * | 2014-12-02 | 2015-03-25 | 国网河南偃师市供电公司 | Device for judging station of automatic reclosing lock of power transmission and distribution station |
-
2012
- 2012-07-30 CN CN 201220376566 patent/CN202678949U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617922A (en) * | 2013-12-10 | 2014-03-05 | 戴顿（重庆）高压开关有限公司 | Universal alternating current and direct current trip detection circuit used for vacuum circuit breaker |
| CN103617922B (en) * | 2013-12-10 | 2015-10-28 | 戴顿（重庆）高压开关有限公司 | AC/DC universal for vacuum circuit-breaker jumps position testing circuit |
| CN104459466A (en) * | 2014-12-02 | 2015-03-25 | 国网河南偃师市供电公司 | Device for judging station of automatic reclosing lock of power transmission and distribution station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20160730 |