CN218677007U - Closing control loop of alternating current filter circuit breaker - Google Patents
Closing control loop of alternating current filter circuit breaker Download PDFInfo
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- CN218677007U CN218677007U CN202222833701.6U CN202222833701U CN218677007U CN 218677007 U CN218677007 U CN 218677007U CN 202222833701 U CN202222833701 U CN 202222833701U CN 218677007 U CN218677007 U CN 218677007U
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- alternating current
- circuit breaker
- current filter
- control device
- breaker mechanism
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The embodiment of the utility model discloses alternating current filter circuit breaker combined floodgate control circuit, include: the positive pole of the alternating current filter measuring and controlling device is electrically connected with the input end of a locking switch of the outdoor circuit breaker mechanism through a first line, the output end of the locking switch of the outdoor circuit breaker mechanism is electrically connected with the input end of a control switch of the reset relay through a second line, the output end of the control switch is electrically connected with the negative pole of the alternating current filter measuring and controlling device through a third line, the positive pole of the alternating current filter measuring and controlling device is electrically connected with the input end of a normally open switch of the reset relay through a fourth line, the output end of the normally open switch is electrically connected with the input end of a phase selection switching-on device through a fifth line, the output end of the phase selection switching-on device is electrically connected with the input end of a switching-on coil of the outdoor circuit breaker mechanism through a sixth line, and the output end of the switching-on coil of the outdoor circuit breaker mechanism is electrically connected with the negative pole of the alternating current filter measuring and controlling device through a seventh line. The technical scheme can shorten the control loop.
Description
Technical Field
The utility model relates to an alternating current filter circuit breaker technical field especially relates to an alternating current filter circuit breaker combined floodgate control circuit.
Background
The converter station alternating current filter is a large-scale power capacitor bank, and in order to solve the problems of transient inrush current, overvoltage and the like generated in the switching-on moment, the current domestic converter station alternating current filter adopts a phase selection switching-on device to control the circuit breaker to switch on.
When the circuit breaker is switched on, the voltage at two ends of a switching-on coil of the circuit breaker is required to be a rated value, if the switching-on coil is in a working condition of insufficient voltage for a long time, the action performance of the switching-on coil is easy to be reduced, and the situation that reliable switching-on cannot be performed occurs. Therefore, it is important to ensure the voltage rating of the ac filter circuit breaker when the closing coil operates.
As shown in fig. 1, a control loop for controlling the switching-on of the ac filter circuit breaker by using a phase selection switching-on device conventionally includes: after a switching-on command is issued by an alternating current filter measurement and control device JLC in the relay protection room JB, the command is transmitted to an outdoor circuit breaker mechanism WD and then returns to a phase selection switching-on device XH in the relay protection room JB, the phase selection switching-on device XH calculates the three-phase action time of the alternating current filter circuit breaker according to the voltage of a large group of buses of the alternating current filter and then transmits the three-phase switching-on command to the outdoor circuit breaker mechanism WD, and after the action of the outdoor circuit breaker mechanism WD is finished, the three-phase switching-on command returns to the alternating current filter measurement and control device JLC to form a closed loop. The whole control loop is respectively folded back for four times through lines L101-L104 between the alternating current filter measurement and control device JLC and the outdoor breaker mechanism, the control loop is too long, voltage drop at two ends of the control loop is large, and the condition that the action voltage of a closing coil cannot reach a rated value exists.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an alternating current filter circuit breaker closing control circuit to it is great to solve the voltage drop that prior art alternating current filter circuit breaker closing control circuit overlength leads to both ends, has the unable problem that reaches the rated value of closing a floodgate coil operating voltage.
The embodiment of the utility model provides a technical scheme as follows:
an AC filter circuit breaker closing control loop, comprising: the device comprises an alternating current filter measurement and control device, a re-acting relay, a phase selection closing device and an outdoor breaker mechanism; the re-acting relay and the phase selection switching-on device are both arranged in an alternating current filter protection screen cabinet, and the alternating current filter measurement and control device and the alternating current filter protection screen cabinet are both positioned in a relay protection chamber; the utility model discloses an outdoor circuit breaker mechanism, including outdoor circuit breaker mechanism, alternating current filter measurement and control device, outdoor circuit breaker mechanism's positive pole with outdoor circuit breaker mechanism's latching switch's input is connected through first circuit electricity, outdoor circuit breaker mechanism's latching switch's output with alternating current filter measurement and control device's negative pole is connected through third circuit electricity, alternating current filter measurement and control device's positive pole with the input of the normally open switch of heavy dynamic relay is connected through fourth circuit electricity, the normally open switch's of heavy dynamic relay output with the input of the selected phase closing device is connected through fifth circuit electricity, the selected phase closing device's output with the input of the closing coil of outdoor circuit breaker mechanism is connected through sixth circuit electricity, the output of the closing coil of outdoor circuit breaker mechanism with the negative pole of alternating current filter measurement and control device passes through seventh circuit electricity and connects.
Further: the alternating current filter measurement and control device is provided with an output switch, and the output switch is electrically connected with the anode of the alternating current filter measurement and control device and the first line.
The utility model discloses alternating current filter circuit breaker combined floodgate control circuit based on the principle of heavily moving, can shorten control circuit, effectively solves alternating current filter circuit breaker combined floodgate control circuit overlength, and the return circuit pressure drop is big, and closing coil both ends voltage is lower, easily leads to the decline of coil action characteristic, causes the problem that the circuit breaker can not reliably close a floodgate, has very strong practicality in engineering practice.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram of a closing control loop of an ac filter circuit breaker of the prior art;
fig. 2 is a schematic diagram of a closing control circuit of an ac filter circuit breaker according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model discloses alternating current filter circuit breaker combined floodgate control circuit. As shown in fig. 2, the control loop includes: the system comprises an alternating current filter measurement and control device JLC, a re-acting relay CJ, a phase selection closing device XH and an outdoor breaker mechanism WD. The re-acting relay CJ and the phase selection switching-on device XH are both installed in the AC filter protection screen cabinet JLG. Generally, there are two ac filter protection cabinets JLG, which are denoted as a and B, and a re-acting relay CJ and a phase selection closing device XH are usually installed in the B cabinet. The alternating current filter measurement and control device JLC and the alternating current filter protection screen cabinet JLG are both located in the relay protection room JB. The positive electrode + KM of the alternating current filter measurement and control device JLC is electrically connected with the input end of a locking switch BK of the outdoor circuit breaker mechanism WD through a first line L201. The output terminal of the latch switch BK of the outdoor breaker mechanism WD is electrically connected to the input terminal of the control switch K1 of the reactivation relay CJ through the second line L202. The output end of a control switch K1 of the reactivation relay CJ is electrically connected with the negative electrode of the alternating current filter measurement and control device JLC through a third line L203. The positive electrode + KM of the alternating current filter measurement and control device JLC is electrically connected with the input end of a normally open switch K2 of the re-acting relay CJ through a fourth line L204. An output end of a normally open switch K2 of the re-acting relay CJ is electrically connected with an input end of the phase selection closing device XH through a fifth line L205. The output end of the phase selection closing device XH is electrically connected with the input end of a closing coil HX of the outdoor circuit breaker mechanism WD through a sixth line L206. The output end of a closing coil HX of the outdoor breaker mechanism WD is electrically connected with the negative electrode-KM of the ac filter measurement and control device JLC through a seventh line L207.
Further, the ac filter measurement and control device JLC has an output switch SK. The output switch SK is electrically connected with the positive electrode + KM of the alternating current filter measurement and control device JLC and the first line L201.
Through the structural design, the control process of the control loop is as follows:
when the output switch SK, the latching switch BK, and the control switch K1 of the re-acting relay CJ are closed, a closed loop from the positive electrode + KM of the ac filter measurement and control device JLC to the negative electrode-KM of the ac filter measurement and control device JLC through the first line L201, the second line L202, and the third line L203 is conducted, so that the re-acting relay CJ is excited, and the normally open switch K2 of the re-acting relay CJ is closed, and a closed loop from the positive electrode + KM of the ac filter measurement and control device JLC through the fourth line L204, the fifth line L205, the phase selection switching-on device XH, the sixth line L206, the switching-on coil HX, the seventh line L207 to the negative electrode-KM of the ac filter measurement and control device JLC is conducted. Like this, exchange filter measurement and control device JLC issues the combined floodgate order, need not the blocking switch BK through outdoor circuit breaker mechanism WD, directly transmit closing coil HX through phase selection closing device XH, compare with prior art, shortened half original control circuit transmission's distance, reduced closing coil HX both ends voltage drop, solved closing coil HX both ends voltage lower easily lead to closing coil HX action characteristic to descend and cause unreliable problem of closing a floodgate.
To sum up, the utility model discloses alternating current filter circuit breaker combined floodgate control circuit based on the principle of heavily moving, can shorten control circuit, effectively solve alternating current filter circuit breaker combined floodgate control circuit overlength, the return circuit pressure drop is big, and closing coil both ends voltage is lower, easily leads to the decline of coil action characteristic, causes the problem that the circuit breaker can not reliably close a floodgate, has very strong practicality in engineering practice.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The utility model provides an exchange filter circuit breaker closing control circuit which characterized in that includes: the system comprises an alternating current filter measurement and control device, a re-acting relay, a phase selection switching-on device and an outdoor breaker mechanism; the re-acting relay and the phase selection switching-on device are both arranged in an alternating current filter protection screen cabinet, and the alternating current filter measurement and control device and the alternating current filter protection screen cabinet are both positioned in a relay protection chamber; the utility model discloses an outdoor circuit breaker mechanism, including outdoor circuit breaker mechanism, alternating current filter measurement and control device, outdoor circuit breaker mechanism's positive pole with outdoor circuit breaker mechanism's latching switch's input is connected through first circuit electricity, outdoor circuit breaker mechanism's latching switch's output with alternating current filter measurement and control device's negative pole is connected through third circuit electricity, alternating current filter measurement and control device's positive pole with the input of the normally open switch of heavy dynamic relay is connected through fourth circuit electricity, the normally open switch's of heavy dynamic relay output with the input of the selected phase closing device is connected through fifth circuit electricity, the selected phase closing device's output with the input of the closing coil of outdoor circuit breaker mechanism is connected through sixth circuit electricity, the output of the closing coil of outdoor circuit breaker mechanism with the negative pole of alternating current filter measurement and control device passes through seventh circuit electricity and connects.
2. The ac filter circuit breaker closing control loop of claim 1, wherein: the alternating current filter measurement and control device is provided with an output switch, and the output switch is electrically connected with the anode of the alternating current filter measurement and control device and the first line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222833701.6U CN218677007U (en) | 2022-10-26 | 2022-10-26 | Closing control loop of alternating current filter circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222833701.6U CN218677007U (en) | 2022-10-26 | 2022-10-26 | Closing control loop of alternating current filter circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218677007U true CN218677007U (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222833701.6U Active CN218677007U (en) | 2022-10-26 | 2022-10-26 | Closing control loop of alternating current filter circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218677007U (en) |
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2022
- 2022-10-26 CN CN202222833701.6U patent/CN218677007U/en active Active
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