CN2290136Y - On-off coil protector for circuit braker - Google Patents
On-off coil protector for circuit braker Download PDFInfo
- Publication number
- CN2290136Y CN2290136Y CN 97207754 CN97207754U CN2290136Y CN 2290136 Y CN2290136 Y CN 2290136Y CN 97207754 CN97207754 CN 97207754 CN 97207754 U CN97207754 U CN 97207754U CN 2290136 Y CN2290136 Y CN 2290136Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- output
- breaker
- high level
- power
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Keying Circuit Devices (AREA)
Abstract
The utility model relates to an on-off coil protector for a circuit breaker. The input of a large power electronic switch and an energy dissipating circuit 2 is connected with an on-off coil, a control circuit 3 is switched off by the large power switch and the large power switch 2 is connected with a circuit 2 in parallel. The output of the circuit 2 is connected with a current sampling and diode amplitude limiting circuit 4, the output of the circuit 4 is connected with an on-off operation judging and starting circuit 5, the output of the circuit 5 is connected with a division and conjunction resisting circuit 6 of a two second time delay judging circuit breaker, the circuit 6 can start the circuit 3 and switch off the circuit 2 and the output of the circuit 5 is kept in high level. One path of the output of the circuit 6 is arranged according to a one second timing circuit 7, and a self-holding circuit 10 can be eliminated by the high level outputted by the circuit 6, so that the large power electronic switch 2 is switched on again.
Description
The utility model is relevant with the circuit-breaker switching on-off coil protector that Automation of Electric Systems and nothing are gone in the transformer station on duty.
In automation and unattended substation, because the operating mechanism stability of some circuit breaker is relatively poor, in time, has and refuses the situation generation that branchs refused to close or auxiliary contact break not open.Under unwatched situation, the power supply of rupturing operation in time promptly can cause and burn switching winding, closing contactor so that closing coil.Even more serious is, also burns tripping operation or combined floodgate latching relay, so that burns the i.e. system wiring board of protective relaying device, brings serious hidden danger to safe operation.
The purpose of this utility model this to provide a kind of volume little, low in energy consumption, external connection is simple, is convenient to on-the-spot circuit-breaker switching on-off coil protector with low cost, safe and reliable is installed.
The utility model is achieved in that
The high level of operational amplifier output provides base flow to triode BG4, the BG4 conducting, DZD is bright for the actuating signal lamp, relay DZJ is moving, the 15V power supply is through DZJ1, and R18 makes BG4 be in the maintenance conducting state, and actuating signal is memorized, another dumb contact DZJ2 of relay DZJ can with local signal system or Computerized monitor system interface, manual reset switch FA is connected between the base stage and emitter of BG4.
Surpass 2 seconds when breaker open operation or switching current duration, the utility model then is judged to be circuit breaker and refuses branch and refuse to close, and auxiliary contact break not open or closing coil master fuse melting etc.Automatically cut off the negative supply in divide-shut brake loop this moment by the high-power electronic switch of establishing in the protective device.Energy dissipating circuit by being connected in parallel on the electronic switch bleeds off the electromagnetic energy that stores in the divide-shut brake coil.Through 1 second time, guarantee that HBJ closes a floodgate and keep and after TBJ trips latching relay really no current has returned, connect negative supply more automatically, reliably prevented the generation of above-mentioned fault.The purpose that the shutoff negative supply is connected after 1 second again is that after the circuit breaker once-through operation tripping that has, operation might success once more.This device also designs action inhibit signal lamp, and provides the signal relay dumb contact, is convenient to and supervisory control system remote signalling circuit interface.Actuating signal must must arrive the scene to impel the attendant through the involution of the ability of the hand resetting button on the device, checks the reason of circuit breaker tripping, and in time handles defective.
The utility model proves that through on-the-spot actual motion its design principle and side circuit are practicable.Device volume is little, and is low in energy consumption, and external connection is simple, is convenient to on-the-spot the installation, cheap.For improving the substation safety operation level, Chengdu Power Bureau sets up the project, at first goes in the station on duty to be extensive use of in comprehensive automation or nothing.Building and design and from now on old station being changed unwatched transformer station, the utility model is formally stood in the design drawing, in construction and rebuilding construction, once finish.
Following is accompanying drawing of the present utility model.
Fig. 1 is an operation principle block diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Fig. 3 front view of the present utility model.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the left view of Fig. 3.
Fig. 6 is the installation diagram of the utility model in electric power system.
Following is embodiment of the present utility model:
See Fig. 2 Lower Half, by triode BG5, BG6, capacitor C 9～C16, resistance R 23～R31, diode D10～D14, original shapes such as high frequency transformer JB constitute the self-energizing switches inverter.With 220V or 110V direct current operative power source, inversion is the square wave ac of 8KHZ.Through fast recovery diode GFD1, GFD2 rectification, output direct current 7V voltage after capacitor C 13, the CX filtering provides the enough base currents of high-power switch tube BG1, BG2 to guarantee high-power switch tube degree of depth saturation conduction.By original papers such as high-frequency rectification bridge ZLQ2, three-terminal voltage-stabilizing IC6, capacitor C 14～C16, form rectification, filtering and voltage stabilizing circuit, output 15V voltage is as the working power in the device.Guarantee operating power when ± 30% scope fluctuates, the work that device also can be reliable and stable.And play the effect of isolating and reducing power consumption as far as possible.
See Fig. 2 first half, form high-power electronic switch by triode BG1, BG2, triode BG3 in service is in cut-off state, the 7V power supply provides enough base currents through R4, D3 to BG2, BG1, BG2 degree of depth saturation conduction guarantee that the separating brake or the closing coil electric current of circuit breaker passes through electronic switch smoothly.Piezo-resistance YM1, capacitor C 1 are formed the disconnected energy circuit that disappears.The breaker mechanism fault, the utility model action is cut off by high-power electronic switch and to be divided, when closing electric current, discharge the electromagnetic energy of divide-shut brake coil storage by this energy dissipating circuit, has suppressed overvoltage, reliably protecting electronic switch.Diode D, D1 make the reverse protection of electronic switch.
R0 is 0.2 Ω/8W resistance, makes current sample and uses.Form amplifier by original papers such as operational amplifier IC2:A, resistance R 7～R9, the R0 sampled voltage is amplified 10 times.Form voltage comparator by amplifier IC2:B, resistance R 10～R12, potentiometer W2, regulate can the adjust starting current of this device of W2, generally adjusting is 0.15A, promptly applicable to the primary cut-out of various dc operations.Normally in service, comparator IC2:B is output as low level, and light-emitting diodes DYD Chang Liang is as the work repeater lamp of this device.During the device starting, IC2:B exports high level, and DYD extinguishes, and indication device reliably starts.
By elements such as amplifier IC2:C, resistance R 14～R17, capacitor C 5, form the time circuit of rechargeable time-delay action in about 2 seconds.To various primary cut-outs,, then be judged to be circuit breaker and gone out the barrier event if can't finish separating brake or making process in 2 seconds.At this moment, amplifier IC2:C exports high level, makes IC2:B remain on the output high level state through resistance R 13.Simultaneously provide base current to BG3 through R5, WD1, the BG3 conducting, bypass the base flow of BG2, BG1, BG2 are turn-offed immediately, cut off the separating brake or the switching current of circuit breaker.Separating brake in the breaker control circuit or combined floodgate latching relay, HBJ or TBJ promptly reliably return, and have removed current operating process.Guarantee that combined floodgate or switching winding HQ and TQ can not burnt out.Simultaneously, protected also that the relevant relay in the control loop is unlikely to be burnt out.
In the time of amplifier IC2:C output high level, provide the base flow of triode BG4 through D6, R19, WD2, the BG4 conducting, actuating signal lamp DZD lights, and relay DZJ is moving.The 15V power supply makes BG4 be in the maintenance conducting state through DZJ1, R18, and actuating signal is memorized.Another dumb contact DZJ2 of relay can with local signal system or Computerized monitor system interface, report protected circuit breaker generating mechanism fault once.Manually press signal return button F A, short circuit BG4 base flow, signal can be eliminated.
The utility model has loam cake 12, base 13.Two row's binding posts 14 are arranged on the base, transparent terminal cap 15 is arranged on the terminal 14, installing hole 16 is arranged.
Use and points for attention:
During 1. on-the-spot the installation, according to device outline overall and installing dimensions figure, confirm to know the binding post numbering after, with reference to Fig. 6 wiring,, confirm could switch on after errorless through crosschecking.If wiring error, device can not shield, and also can damage this protective device even.Particularly No. 5 terminals of positive supply (1) misconnection at device; divide-shut brake coil tail end (2 ') misconnection is at No. 1 terminal; after the energising; can cause the high-power electronic switch direct short-circuit of positive and negative power supply in installing; burn electronic switch immediately; P cock tripping operation of control power supply or protection fusing ask 10,000,000 10,000,000 to pay attention to!
2. in order to reduce the amount of information of remote signalling, after the actuating signal relay dumb contact parallel connection of suggestion with each road device output, insert a remote signalling point of supervisory control system, send out the resultant signal of " circuit breaker operation mechanism fault ".Control end operations staff can according to which platform circuit breaker of remote operation at that time, or which platform relaying protection action, and which road once sent information such as " control loop broken strings ", and which platform circuit breaker operation mechanism fault differentiates is.There is red actuating signal lamp to keep on the device, is convenient to reaffirm to the scene.
3. on the device greensignal light is arranged, whether Chang Liang monitors power supply and installs at normal operating condition at ordinary times.During operating breaker, green light extinguishes, and the starting of device dress is described, design is whole group of on-the-spot for convenience debugging like this.If it is bright again that circuit breaker operation mechanism fault really, green light are extinguished after two seconds kinds, red light is also bright simultaneously, illustrates that device behind the correct operation, connected divide-shut brake loop negative supply again.
4. on-the-spot the installation, general with every covering device in the terminal board chest of switch cubicle, wiring nearby is the most convenient.Also can near the terminal board of protection or control flow, install.In a word, must be by after 1. the loop be distinguished in a requirement, correct wiring.
Claims (3)
1; a kind of circuit-breaker switching on-off coil protector; it is characterized in that power circuit (1) provides direct current to high-power electronic switch and energy dissipating circuit (2); the input of circuit (2) meets divide-shut brake coil HQ; TQ; high power switch switch off control circuit (3) in parallel with circuit (2); the output of circuit (2) connects current sample and diode limiting circuit (4); the output of circuit (4) connects breaker tripping and closing operation judgement and starting circuit (5) makes light-emitting diode DYD Chang Liang; as the work repeater lamp; the output of circuit (5) connects 2 seconds time-delay determining devices and refuses branch and refuse to close circuit (6); circuit (6) is operational amplifier IC2:C; resistance; the delay time circuit that electric capacity is formed; if circuit breaker can not be finished separating brake or making process in 2 seconds; then IC2:C exports high level; make the transistor BG3 conducting of control circuit (3); thereby breaking circuit (2); cut off the separating brake or the switching current of circuit breaker; starting state self-hold circuit (9) input circuit (5) that the high level of circuit (6) output is formed through resistance R 13 makes the output of circuit (5) remain on high level state; the output one tunnel of circuit (6) connects by fortune pipe amplifier IC2:D and resistance; 1 second time circuit (7) of time-delay that electric capacity is formed; when circuit (3) turn-offed for 1 second; after HBJ in the breaker control circuit or TBJ reliably return; circuit (7) output high level is delivered to the inverting input of operational amplifier IC2:B, eliminates self-hold circuit (10) and makes high-power electronic switch conducting again.
2; circuit-breaker switching on-off coil protector according to claim 1; it is characterized in that it is square wave ac with the direct current operative power source inversion that power circuit (1) has the switch inversion stabilized voltage power supply; behind rectifying and wave-filtering, offer circuit (2) DC power supply; circuit (2) is by triode BG1; BG2 forms high-power electronic switch; circuit (3) is made of triode BG3; be in operation and be in cut-off state; BG1; the collector electrode of BG2 meets circuit-breaker switching on-off coil HQ; TQ; piezo-resistance YM1; capacitor C 1 is formed the energy dissipating circuit and is connected to BG1; between the collector electrode of BG2 and the working power negative pole; the sampling resistor R0 of circuit (4) is connected to BG1; the emitter of BG2; operational amplifier IC2:A; output to the normal phase input end of comparator IC2:B after the R0 sampled voltage amplified 10 times; the inverting input of IC2:B meets variable resistor W2; regulate W2 and can determine starting current; normally in service; comparator IC2:B is output as low level, and light-emitting diode DYD Chang Liang is during starting; IC2:B exports high level, and DYD extinguishes.The output of IC2:B is through resistance R 16, R17 connects the positive input of operational amplifier IC2:C, the reverse input end of IC2:C meets R14 and R15, capacitor C 5 is connected between R16 and the R15, the time circuit of forming 2 seconds time-delay determining devices, if primary cut-out can't be finished separating brake or separating brake process in 2 seconds, then operational amplifier 1C2:C output high level is through the positive input of R13 to IC2:B, make IC2:B remain on the output high level state, the output of IC2:C is simultaneously through resistance R 5, WD1 provides base current to transistor BG3, the BG3 conducting, the base current of bypass BG2 makes B61, BG2 turn-offs immediately, the separating brake or the switching current of circuit breaker have been cut off, separating brake in the breaker control circuit or combined floodgate latching relay HBJ or TBJ promptly reliably return, remove current operating process, operational amplifier IC2:D, R21, R22, C7 etc. form the delay time circuit, IC2:D output low level at ordinary times, and diode D9 ends, when high-power electronic switch turn-offed for 1 second, after HBJ in the breaker control circuit or TBJ reliably returned, IC2:D output high level made the package unit involution to the inverting input of comparator IC2:B.
3, circuit-breaker switching on-off coil protector according to claim 1 and 2; the high level that it is characterized in that operational amplifier output provides base flow to triode BG4; the BG4 conducting; DZD is bright for the actuating signal lamp, and relay DZJ is moving, and the 15V power supply is through DzJ1; R18 makes BG4 be in the maintenance conducting state; actuating signal is memorized, another dumb contact DZJ2 of relay DZJ can with local signal system or Computerized monitor system interface, manual reset switch FA is connected between the base stage and emitter of BG4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207754 CN2290136Y (en) | 1997-03-17 | 1997-03-17 | On-off coil protector for circuit braker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207754 CN2290136Y (en) | 1997-03-17 | 1997-03-17 | On-off coil protector for circuit braker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2290136Y true CN2290136Y (en) | 1998-09-02 |
Family
ID=33927432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97207754 Expired - Fee Related CN2290136Y (en) | 1997-03-17 | 1997-03-17 | On-off coil protector for circuit braker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2290136Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332961A (en) * | 2014-11-04 | 2015-02-04 | 国家电网公司 | Burning proof protection device for switch opening and closing coil |
| CN106099866A (en) * | 2016-06-20 | 2016-11-09 | 国家电网公司 | There is the circuit breaker operation mechanism protection device of short message sending function |
| CN108761318A (en) * | 2018-03-21 | 2018-11-06 | 北京四方继保自动化股份有限公司 | A kind of intelligent double jump circle mimic-disconnecting switch |
| CN109119964A (en) * | 2018-10-29 | 2019-01-01 | 国网辽宁省电力有限公司沈阳供电公司 | Prevent the intelligent controller of switch trip coil burnout |
| CN113629873A (en) * | 2021-08-16 | 2021-11-09 | 北京瑞凯软件科技开发有限公司 | Contact net isolator monitoring unit based on IGBT realizes |
-
1997
- 1997-03-17 CN CN 97207754 patent/CN2290136Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332961A (en) * | 2014-11-04 | 2015-02-04 | 国家电网公司 | Burning proof protection device for switch opening and closing coil |
| CN106099866A (en) * | 2016-06-20 | 2016-11-09 | 国家电网公司 | There is the circuit breaker operation mechanism protection device of short message sending function |
| CN106099866B (en) * | 2016-06-20 | 2019-04-05 | 国家电网公司 | Circuit breaker operation mechanism protective device with short message sending function |
| CN108761318A (en) * | 2018-03-21 | 2018-11-06 | 北京四方继保自动化股份有限公司 | A kind of intelligent double jump circle mimic-disconnecting switch |
| CN108761318B (en) * | 2018-03-21 | 2021-04-30 | 北京四方继保自动化股份有限公司 | Intelligent double-jumping-ring analog circuit breaker |
| CN109119964A (en) * | 2018-10-29 | 2019-01-01 | 国网辽宁省电力有限公司沈阳供电公司 | Prevent the intelligent controller of switch trip coil burnout |
| CN109119964B (en) * | 2018-10-29 | 2023-12-05 | 国网辽宁省电力有限公司沈阳供电公司 | Intelligent controller for preventing switch tripping coil from burning |
| CN113629873A (en) * | 2021-08-16 | 2021-11-09 | 北京瑞凯软件科技开发有限公司 | Contact net isolator monitoring unit based on IGBT realizes |
| CN113629873B (en) * | 2021-08-16 | 2024-03-26 | 北京瑞凯软件科技开发有限公司 | Contact net isolator monitoring unit based on IGBT is realized |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201656420U (en) | Three-phase auto reclosing electricity leakage protection switch | |
| CN102005720B (en) | Neutral line breakage detection protection method and device | |
| CN102110971A (en) | Intelligent protection controller for low-voltage distribution room | |
| CN2290136Y (en) | On-off coil protector for circuit braker | |
| CN202616135U (en) | Opening control loop of spring mechanism of 10kV vacuum circuit breaker | |
| CN201576928U (en) | Intelligent protection controller of low-pressure table region | |
| CN112377475A (en) | Automatic control system for pipeline groove | |
| CN101060245A (en) | Breaker coil protector | |
| CN213981403U (en) | Automatic control system for pipeline groove | |
| CN104241014B (en) | Vacuum circuit-breaker separating brake, closing coil protection controller and method | |
| CN112290548A (en) | Automatic switching-on and switching-off device of distribution transformer for agricultural distribution network alternating current ice melting | |
| CN205900465U (en) | Miniature circuit breaker | |
| CN2290135Y (en) | On-load voltage regulation mechanism protector for transformer | |
| CN213782972U (en) | High-voltage power distribution cabinet opening and closing monitoring circuit and system | |
| CN217882955U (en) | Dual-power automatic switching system of blast furnace equipment | |
| CN219145010U (en) | Circuit for preventing undervoltage protection misoperation of low-voltage frame type circuit breaker | |
| CN203813426U (en) | Tripping protector for circuit breaker | |
| CN204179005U (en) | Middle pressure vacuum circuit-breaker divides, closing coil protection controller | |
| CN112327152B (en) | FC switch on-off time testing and zero sequence protection setting system and method thereof | |
| CN214410995U (en) | Rail transit safety interlocking device | |
| CN216134100U (en) | Control system for circuit breaker to display real-time state on site | |
| CN209471914U (en) | A kind of novel tripping device | |
| CN219322144U (en) | Power supply circuit | |
| CN210326996U (en) | Improved switch-on/off controller of circuit breaker | |
| CN211579684U (en) | Automatic change-over switch for power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |