CN1996696A - Control circuit for intelligent breaker loop protection - Google Patents
Control circuit for intelligent breaker loop protection Download PDFInfo
- Publication number
- CN1996696A CN1996696A CN 200610149138 CN200610149138A CN1996696A CN 1996696 A CN1996696 A CN 1996696A CN 200610149138 CN200610149138 CN 200610149138 CN 200610149138 A CN200610149138 A CN 200610149138A CN 1996696 A CN1996696 A CN 1996696A
- Authority
- CN
- China
- Prior art keywords
- relay
- control circuit
- circuit
- protecting device
- breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
This invention discloses one control circuit to realize intelligent break coil protection, which comprises relay output trigger, one break control circuit, one break work circuit, wherein, the micro machine protection device relay output trigger end is connected to power anode and the other end connected to relay end; the other end of the relay is connected to power cathode and the diode is connected to resistance paralleled with relay two ends.
Description
Technical field
The invention belongs to electronic technology field, particularly relate in electric power system, microcomputer protecting device is realized the design of intelligent breaker loop protection circuit.
Background technology
In the automation of transformation substations equipment of electric power system, microcomputer protecting device has obtained using widely, has improved reliability, fail safe and the intelligentized level of automation of transformation substations electricity equipment operation.But also there is blemish in an otherwise perfect thing in current microcomputer protecting device control circuit, and this control circuit is in debugging and running, and the coil of breaker closing coil, separating brake is burnt easily.After the instantaneous closure of microcomputer protecting device trip contact or closing contact, rely on the self-holding contact of tripping operation, combined floodgate latching relay, output voltage is remained valid, after the circuit breaker action, till the circuit disconnection.The mechanism of circuit breaker action is dumb often a stuck phenomenon, trip circuit or combined floodgate circuit can not be disconnected, and the electric current of breaker coil increases, and conduction time is a little longer, will make coil burnout.Breaker coil burns, and the lighter will be to the maintenance or the replacing of equipment, and weight person may cause the electric fire accident of going out, and has prolonged interruption duration, give produce, life brings loss.At above-mentioned shortcoming, be to improve the reliability and the fail safe of microcomputer protecting device, the control circuit of the microcomputer protecting device of now is improved being very important.
Summary of the invention
The purpose of this invention is to provide a kind of control circuit of realizing intelligent breaker loop protection, with the closing coil that overcomes present circuit breaker, the shortcoming that switching winding is burnt easily.
In order to realize above-mentioned purpose, technical scheme of the present invention is: the control circuit of realizing intelligent breaker loop protection, the relay output contact XQBH-1 that comprises microcomputer protecting device, a circuit breaker control circuit 1, the operating circuit 2 of a circuit breaker, the end of the relay output contact XQBH-1 of described microcomputer protecting device is connected with the positive pole+KM of power supply, and the other end of the relay output contact XQBH-1 of microcomputer protecting device is connected with the end of relay J K, and the other end of relay J K is connected with the negative pole-KM of power supply, behind described diode V4 and resistance R 9 polyphones, in parallel with the two ends of relay J K again; The normally-closed contact JK-1 of described relay J K is serially connected between the positive pole+KM1 of the positive pole+KM of control circuit power supply and circuit breaker trip, combined floodgate public power; Described relay J K uses the control circuit power work; Described relay J K is subjected to the control of the relay output contact XQBH-1 of microcomputer protecting device; The relay output of described microcomputer protecting device is controlled by the programming of microcomputer protecting device as the control signal of the outage of breaker coil.
Adopt the present invention of above-mentioned measure; it is design breaker loop protection circuit in the control circuit of microcomputer protecting device; utilize protective device existing circuit breaker position signalling; promptly jump the position relay and close a relay switch contacts input signal, as breaker coil power on signal, normal operation of circuit breaker signal.When the coil electrify time of circuit breaker surpasses setting-up time; when circuit breaker does not have the input of operate as normal signal; protective device relay output contact closure; control the work of high direct current breaking capacity direct current relay; cut off the self-hold circuit of microcomputer protecting device; make the breaker coil outage, reach the purpose that the protective circuit breaker coil is not burnt out, improved the reliability and the fail safe of microcomputer protecting device.
Description of drawings
Below in conjunction with accompanying drawing to the present invention's further detailed explanation again.
Accompanying drawing 1 is circuit theory diagrams of the present invention.
Embodiment
Fig. 1 is circuit theory diagrams of the present invention, and as can be seen from Figure 1 ,+KM is the positive pole of control circuit power supply, and+KM1 is the positive pole of circuit breaker trip, combined floodgate public power, and-KM is the negative pole of control circuit power supply, and the voltage of control circuit is 220 volts of direct currents.Block diagram 1 is that circuit diagram, the block diagram 2 of circuit breaker control circuit is the working circuit diagram of circuit breaker, the connection layout of the circuit breaker control circuit of the microcomputer protecting device of block diagram 1, block diagram 2 composition prior aries and the operating circuit of circuit breaker.
Referring to accompanying drawing 1, realize the control circuit of intelligent breaker loop protection, the relay output contact XQBH-1 that comprises microcomputer protecting device, the circuit 1 of the circuit breaker control circuit of microcomputer protecting device, the operating circuit 2 of circuit breaker, the end of the relay output contact XQBH-1 of this microcomputer protecting device is connected with the positive pole+KM of power supply, and the other end of the relay output contact XQBH-1 of microcomputer protecting device is connected with the end of relay J K, and the other end of relay J K is connected with the negative pole-KM of power supply, behind diode V4 and resistance R 9 polyphones, in parallel with the two ends of relay J K again; The normally-closed contact JK-1 of relay J K is serially connected between the positive pole+KM1 of the anode+KM of control circuit power supply and circuit breaker trip, combined floodgate public power; Relay J K uses the control circuit power work; Relay J K is subjected to the control of the relay contact XQBH-1 of microcomputer protecting device output; The relay output of this microcomputer protecting device is controlled by the programming of microcomputer protecting device as the control signal of breaker coil outage.
Referring to block diagram 1, block diagram 2, trip circuit is made of tripping relay output contact TZJ-1, tripping operation pressing plate TZYB, tripping operation latching relay TBJ, the TBJ-1 contact is the self-holding contact of tripping operation latching relay, and resistance R 4 and diode WV1, diode WV2 play shunting and pressure stabilization function.The combined floodgate circuit is made of normally-closed contact TBJV-2, the combined floodgate latching relay HBJ of closing relay output contact HZJ-1, combined floodgate pressing plate HZYB, anti-trip relay TBJV, the HBJ-1 contact is the self-holding contact of combined floodgate latching relay, and resistance R 5 and diode WV3, diode WV4 play shunting and pressure stabilization function.Trip-preventing circuit is made up of trip latching relay contact TBJ-2, anti-trip relay TBJV and its self-holding contact TBJV-1, resistance R 3.Resistance R 1 and closing position relay HWJ form the closing position testing circuit.Resistance R 2 and tripping position relay TWJ form the trip position testing circuit.Diode V1 and resistance R 6, diode V2 and resistance R 7, diode V3 and resistance R 8 provide afterflow for relay coil in the circuit.When being in trip position as circuit breaker; electric current from+KM through R2, jump a position relay coil TWJ, mechanical switch DL1, the closing coil HQ of close a floodgate end H end, circuit breaker be to-KM; make and jump position relay TWJ adhesive, its auxiliary contact closure is input to microcomputer protecting device in the switching value mode.In like manner, when circuit breaker is in closing position, close a relay HWJ adhesive, its auxiliary contact closure also is input to microcomputer protecting device in the switching value mode.Need be explained; in microcomputer protecting device; tripping operation, the input of closing position switching value have had; tripping relay, closing relay and output relay also have; make coil protect control, the contact XQBH-1 of the output contact TZJ-1 of the corresponding tripping relay that only drawn among the figure, closing relay output contact HZJ-1, output relay with one road output relay contact.
The connection layout of the circuit breaker control circuit of block diagram 1 and block diagram 2 composition microcomputer protecting devices and the operating circuit of circuit breaker; DL1 and DL2 are the mechanical switchs of circuit breaker interlock, and HQ is a closing coil, and TQ is a breaking coil; when two coils were switched on respectively, the switch that drives mechanical linkage switched.Circuit breaker when trip position, mechanical switch DL1 closure, mechanical switch DL2 disconnects; Circuit breaker is when closing position, and mechanical switch DL1 disconnects, mechanical switch DL2 closure.
The judgement of circuit breaker failure: one, the combined floodgate failure judgment, in the time of closing a floodgate, the expression circuit breaker is in trip position at present, promptly jumps position relay TWJ adhesive, closes a not adhesive of relay HWJ.Behind combined floodgate, the closing relay adhesive, its contact HZJ-1 closure, the combined floodgate circuit is connected, and the end H end that closes a floodgate is+the KM current potential that 1.4 volts of coil HBJ both end voltage can be ignored.Jumping a position relay TWJ is 1.4 volts because of the coil both end voltage, is attracting state not by adhesive change state; Simultaneously, because of mechanical switch DL1 closure, closing coil HQ gets, the circuit breaker action makes circuit breaker change to closing position by trip position, and mechanical switch DL1 disconnects, mechanical switch DL2 closure is closed a relay HWJ this moment and is got electricly, becomes attracting state by attracting state not.When the combined floodgate fault, closing coil HQ gets, but can not make mechanical switch DL1, the mechanical switch DL2 switching that links, closing coil HQ will continue energising, jump position relay TWJ and be attracting state not by adhesive change state, must not be electric and close a relay HWJ, not closed because of mechanical switch DL2, still be in not attracting state.They are two years old, the tripping operation failure judgment is identical with above-mentioned principle, when the tripping operation fault, breaking coil TQ gets electric, but can not make mechanical switch DL1, the mechanical switch DL2 switching that links, and breaking coil TQ will continue energising, close a relay HWJ and be attracting state not by adhesive change state, must not be electric and jump position relay TWJ, not closed because of DL1, still be in not attracting state.Like this; jump position relay TWJ or close two relays of a relay HWJ as long as we judge; become not attracting state by attracting state; just known that breaker coil begins energising; microcomputer protecting device starts timing software; in the time of setting; jump position relay TWJ or close a relay HWJ relay and do not change; then prove circuit breaker failure; microcomputer protecting device is exported a pulse enable signal output relay contact XQBH-1 closure, makes high direct current breaking capacity direct current relay JK energising, and the contact JK-1 of JK disconnects; circuitry cuts with self-hold circuit; make circuit breaker trip coil TQ or closing coil HQ outage, thereby finished circuit breaker breaking coil TQ or closing coil HQ protection, when pulse signal disappears; relay contact JK-1 closure, control circuit recovers.
By writing the program of microcomputer protecting device, realize the protection of breaking coil TQ, closing coil HQ.Can in the protective device function, increase a breaker protection function definite value, make its breaker loop protection functional intellectualization.The breaker electrifying time set is become several fixed values; select for the user; if surpass set point conduction time; control output relay contact XQBH-1 closure; the normally-closed contact JK-1 of direct current relay JK is disconnected; the power supply of tripping protection device control circuit and tripping operation and combined floodgate circuit makes circuit breaker trip coil TQ or closing coil HQ outage, simultaneously output alarm signal.The breaker electrifying time still can also be set at fixed value, if surpass set point conduction time, control output relay contact XQBH-1 makes the contact JK-1 of direct current relay JK disconnect earlier, cut off the tripping operation of microcomputer protecting device control circuit and the power supply of combined floodgate circuit, make circuit breaker trip coil TQ or closing coil HQ outage, play a protective role; Microcomputer protecting device is carried out tripping operation or the closing operation of last time once more then; circuit breaker is switched on once more; like this through several times energising and power operation; it is incomplete when stuck just to have solved the circuit breaker mechanical mechanism; energising for the first time is failure to actuate; but mechanical mechanism is existing loosening, and energising for the second time just can realize successfully tripping operation or the problem of closing a floodgate, and has improved the reliability of circuit breaker action.The present invention combines the control circuit of breaker loop protection and circuit breaker, thereby has realized the intelligent protection of breaker coil.
The relay J K that the present invention adopts is that DZ637/220VDC-2QD type, diode V4 are that 1N4007, resistance R 9 are 1/4W 510 Ω.
Claims (4)
1. realize the control circuit of intelligent breaker loop protection, the relay output contact (XQBH-1) that comprises microcomputer protecting device, a circuit breaker control circuit (1), the operating circuit of a circuit breaker (2), it is characterized in that: an end of the relay output contact (XQBH-1) of described microcomputer protecting device and the positive pole of power supply (+KM) be connected, and the other end of the relay output contact (XQBH-1) of microcomputer protecting device is connected with an end of relay (JK), and the other end of relay (JK) (KM) is connected with the negative pole of power supply, after described diode (V4) is contacted with resistance (R9), in parallel with the two ends of relay (JK) again; The normally-closed contact (JK-1) of described relay (JK), be serially connected in the control circuit power supply positive pole (+KM) and the positive pole of circuit breaker trip, combined floodgate public power (+KM1) between.
2. the control circuit of realization intelligent breaker loop protection according to claim 1 is characterized in that: described relay (JK) uses the power work of control circuit.
3. the control circuit of realization intelligent breaker loop protection according to claim 1 is characterized in that: described relay (JK) is subjected to the control of the relay output contact (XQBH-1) of microcomputer protecting device.
4. the control circuit of realization intelligent breaker loop protection according to claim 1; it is characterized in that: the relay output of described microcomputer protecting device is controlled by the programming of microcomputer protecting device as the control signal of the outage of breaker coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101491383A CN100456593C (en) | 2006-11-14 | 2006-11-14 | Control circuit for intelligent breaker loop protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101491383A CN100456593C (en) | 2006-11-14 | 2006-11-14 | Control circuit for intelligent breaker loop protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1996696A true CN1996696A (en) | 2007-07-11 |
| CN100456593C CN100456593C (en) | 2009-01-28 |
Family
ID=38251671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101491383A Expired - Fee Related CN100456593C (en) | 2006-11-14 | 2006-11-14 | Control circuit for intelligent breaker loop protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100456593C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006806A (en) * | 2015-08-18 | 2015-10-28 | 安阳工学院 | Circuit breaker series connection type electrical trip prevention circuit |
| CN105374645A (en) * | 2015-11-19 | 2016-03-02 | 内蒙古电力勘测设计院有限责任公司 | Secondary circuit of handcart cabinet |
| CN106602499A (en) * | 2017-02-17 | 2017-04-26 | 南京南瑞继保电气有限公司 | Breaker control circuit |
| CN106849363A (en) * | 2017-03-17 | 2017-06-13 | 雅砻江流域水电开发有限公司 | The three-phase mechanical linkage circuit breaker control box that tripping operation contact shows entirely |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08203392A (en) * | 1995-01-30 | 1996-08-09 | Mitsubishi Electric Corp | Device for closing and tripping circuit breaker |
| CN2454969Y (en) * | 2000-11-22 | 2001-10-17 | 济南迪生电子研究所 | Machine card protection apparatus for automation system of transformer substation |
| CN2764033Y (en) * | 2004-03-23 | 2006-03-08 | 潍坊开发区华为电气有限公司 | Breaker coil protector |
-
2006
- 2006-11-14 CN CNB2006101491383A patent/CN100456593C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006806A (en) * | 2015-08-18 | 2015-10-28 | 安阳工学院 | Circuit breaker series connection type electrical trip prevention circuit |
| CN105374645A (en) * | 2015-11-19 | 2016-03-02 | 内蒙古电力勘测设计院有限责任公司 | Secondary circuit of handcart cabinet |
| CN105374645B (en) * | 2015-11-19 | 2018-05-25 | 内蒙古电力勘测设计院有限责任公司 | A kind of hands injured secondary circuit |
| CN106602499A (en) * | 2017-02-17 | 2017-04-26 | 南京南瑞继保电气有限公司 | Breaker control circuit |
| CN106849363A (en) * | 2017-03-17 | 2017-06-13 | 雅砻江流域水电开发有限公司 | The three-phase mechanical linkage circuit breaker control box that tripping operation contact shows entirely |
| CN106849363B (en) * | 2017-03-17 | 2019-03-12 | 雅砻江流域水电开发有限公司 | The three-phase mechanical linkage circuit breaker control box that tripping contact is shown entirely |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100456593C (en) | 2009-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201312124Y (en) | Protection circuit for preventing accumulator charging and reversal connection | |
| CN100456593C (en) | Control circuit for intelligent breaker loop protection | |
| CN202512194U (en) | Sound and light alarm of circuit break | |
| CN205509481U (en) | Circuit breaker divides closing control circuit with overheat protection function | |
| CN217362568U (en) | Closing and separating loop of pole-mounted circuit breaker | |
| CN101060245A (en) | Breaker coil protector | |
| CN204885020U (en) | Relay module | |
| CN101728773B (en) | Full-adaptive high-voltage switch controller based on light-coupled control | |
| CN102801319A (en) | Direct current step-down switch | |
| CN202864606U (en) | Elevator electric system safety return circuit | |
| CN112086942B (en) | Anti-tripping loop and control method thereof | |
| CN210536278U (en) | 'double-anti-jumping' protection circuit | |
| CN202564930U (en) | Direct current operation loop anti-pumping circuit | |
| CN203607351U (en) | A low-voltage circuit breaker automatic closing apparatus | |
| CN209641593U (en) | A kind of contactor for preventing electric arc control unit | |
| CN207652018U (en) | A kind of breaker with short time duty device for under-voltage releasing equipment | |
| CN203278209U (en) | Closing coil protector for breaker | |
| CN205901702U (en) | Solid -state switch circuit of high voltage direct current double - circuit interlocking | |
| CN206042482U (en) | Take over -current protection's drive circuit based on PLC | |
| CN203813426U (en) | Tripping protector for circuit breaker | |
| CN103531408B (en) | Low-voltage circuit breaker automatic switching-on device and the method for automatic closing after no-voltage trip thereof | |
| CN209471914U (en) | A kind of novel tripping device | |
| CN103545795A (en) | Breaker tripping protector | |
| CN204407860U (en) | The control circuit of circuit breaker Undertension shunt opening integrated electrical apparatus release | |
| CN216486769U (en) | Isolating device for switch button |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGXI XINGYU SMART ELECTRIC CO., LTD. Effective date: 20110829 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110829 Address after: 536000, Guangxi Beihai Tibet Road 11 Galaxy software technology park complex Patentee after: Guangxi Xingyu Intelligent Electric Co., Ltd. Address before: 536000, Tibet Road, the Guangxi Zhuang Autonomous Region, Beihai No. 11 comprehensive building Patentee before: Beihai Yinhe High Science and Technology Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090128 Termination date: 20151114 |
|
| EXPY | Termination of patent right or utility model |