CN204231248U - A kind of synchronous generator exciting regulates protective circuit - Google Patents
A kind of synchronous generator exciting regulates protective circuit Download PDFInfo
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- CN204231248U CN204231248U CN201420611946.7U CN201420611946U CN204231248U CN 204231248 U CN204231248 U CN 204231248U CN 201420611946 U CN201420611946 U CN 201420611946U CN 204231248 U CN204231248 U CN 204231248U
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Abstract
The utility model discloses a kind of synchronous generator exciting and regulate protective circuit, comprise comparing element, detecting bridge circuit, stable element, phase-shifting trigger link and low speed overcurrent protection link, comparing element comprises generator main winding F, excitation winding L, rectifier bridge Q2, resistance R10 and electric capacity C4, detecting bridge circuit comprises resistance R12, resistance R13 and diode D9, stable element comprises resistance R14, resistance R15 and electric capacity C6, phase-shifting trigger link comprises unijunction transistor BT, triode BG2 and electric capacity C5, low speed overcurrent protection link comprises relay J 1 and and controllable silicon KG1.The utility model devises low speed overcurrent protection link and constant voltage link of protection in excitation regulation circuit, and not only circuit structure is simple, and cost is low, and can be stable provide constant voltage to protect for generator, improve stability and the fail safe of generator system.
Description
Technical field
The utility model relates to a kind of protective circuit, and specifically a kind of synchronous generator exciting regulates protective circuit.
Background technology
Generator is as the energy source of modern industry; its stability is more and more subject to the attention of contemporary people; so to the direction be designed to as people make great efforts of generator protection circuit; multiple implementation is designed with at present for generator protection circuit; but mostly poor stability and circuit structure is complicated; in practice, effect is poor, well can not provide protection to generator.
Utility model content
The purpose of this utility model is to provide a kind of stability strong and the simple synchronous generator exciting of circuit structure regulates protective circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of synchronous generator exciting regulates protective circuit, comprise comparing element, detecting bridge circuit, stable element, phase-shifting trigger link and low speed overcurrent protection link, described comparing element comprises generator main winding F, excitation winding L, rectifier bridge Q2, resistance R10 and electric capacity C4, described detecting bridge circuit comprises resistance R12, resistance R13 and diode D9, described stable element comprises resistance R14, resistance R15 and electric capacity C6, described phase-shifting trigger link comprises unijunction transistor BT, triode BG2 and electric capacity C5, described low speed overcurrent protection link comprises relay J 1 and and controllable silicon KG1.
Described generator main winding F connects output terminals A respectively, output B, output C and input D, described output terminals A also connects inductance L 1 respectively, resistance R3, the K pole of diode D3 negative pole and controllable silicon KG1, described output B is also connected to output C by relay J 2, described input D also connects inductance L 1 other end respectively, diode D2 negative pole, the K pole of controllable silicon KG2 and resistance R2, the described resistance R3 other end connects electric capacity C3, the described resistance R2 other end connects electric capacity C2, the described electric capacity C3 other end connects the A pole of controllable silicon KG1 respectively, the electric capacity C2 other end, diode D1 negative pole, electric capacity C1 and relay J 1, electric capacity C1 other end contact resistance R1, the resistance R1 other end connects fuse FR respectively, diode D1 positive pole, diode D2 positive pole, diode D3 positive pole, relay J 2 contact J2-1 and relay J 2 contact J2-2, the described fuse FR other end connects excitation winding L, the excitation winding L other end connects relay J 1 other end respectively, relay J 2 contact J2-3 and relay J 2 contact J2-4, the relay J 2 contact J2-4 other end connects the relay J 2 contact J2-3 other end and key switch K1 respectively, the key switch K1 other end connects storage battery E positive pole, learn battery E negative pole contact resistance R6, the resistance R6 other end connects relay J 2 contact J2-1 and relay J 2 contact J2-2 respectively, the G pole connecting triode BG2 collector electrode of described controllable silicon KG2, the G pole connecting triode BG1 collector electrode of described controllable silicon KG1, triode BG1 emitter is connection transformer T1 coil L7 respectively, triode BG2 emitter, diode D4 negative pole, diode D5 negative pole, coil L2 and coil L3, described coil L2 other end contact resistance R4, the resistance R4 other end connects diode D4 positive pole and triode BG1 base stage respectively, described coil L3 other end contact resistance R5, the resistance R5 other end connects diode D5 positive pole and triode BG2 base stage respectively, the A pole connection transformer T1 coil L7 other end of described controllable silicon KG2, described transformer T1 coil L6 connects diode D7 negative pole respectively, the B1 pole of unijunction transistor BT, diode D6 positive pole, rectifier bridge Q1 pin 2, relay J 1 contact J1-1 and key switch K2, described rectifier bridge Q1 pin 1 is connected to rectifier bridge Q1 pin 3 by inductance L 4, the described key switch K2 other end connects relay J 1 contact J1-1 respectively, triode BG4 collector electrode, resistance R7, diode D6 negative pole and resistance R8, the resistance R8 other end connects rectifier bridge Q1 pin 4, the described resistance R7 other end connects the B2 pole of unijunction transistor BT, the emitter contact resistance R9 and electric capacity C5 respectively of described unijunction transistor BT, the electric capacity C5 other end connects diode D7 positive pole and the transformer T1 coil L6 other end respectively, the described resistance R9 other end is connecting triode BG4 emitter respectively, electric capacity C6, resistance R16, resistance R12 and diode D9 positive pole, described electric capacity C6 other end contact resistance R17, the resistance R17 other end is connecting triode BG4 base stage respectively, resistance R15 and electric capacity C7, the electric capacity C7 other end is the contact resistance R15 other end respectively, the resistance R16 other end and resistance R14, the resistance R14 other end is contact resistance R13 and diode D8 negative pole respectively, diode D8 positive pole is the contact resistance R12 other end and resistance R11 respectively, the resistance R11 other end is contact resistance R10 and electric capacity C4 respectively, the electric capacity C4 other end is the contact resistance R13 other end respectively, diode D9 negative pole and rectifier bridge Q2 pin 2, rectifier bridge Q2 pin 1 is connected to rectifier bridge Q2 pin 3 by inductance L 5, the rectifier bridge Q2 pin 4 contact resistance R10 other end.
As further program of the utility model: described electric capacity C1, electric capacity C2, electric capacity C3, resistance R1 and resistance R2 form rc protection circuit.
As further program of the utility model: described key switch K1, storage battery E and resistance R6 composition magnetizes and excitation link, when generator is without remanent magnetism, is magnetized by storage battery E.
Scheme as the utility model step again: described triode BG1 and triode BG2 forms pulse distribution link, and the conducting of triode BG1 and triode BG2 is controlled by transformer T1.
Compared with prior art; the beneficial effects of the utility model are: the utility model devises low speed overcurrent protection link and constant voltage link of protection in excitation regulation circuit; not only circuit structure is simple; cost is low; and can stable provide constant voltage to protect for generator, improve stability and the fail safe of generator system.
Accompanying drawing explanation
Fig. 1 is the structural representation that synchronous generator exciting regulates protective circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of synchronous generator exciting regulates protective circuit, comprise comparing element, detecting bridge circuit, stable element, phase-shifting trigger link and low speed overcurrent protection link, comparing element comprises generator main winding F, excitation winding L, rectifier bridge Q2, resistance R10 and electric capacity C4, detecting bridge circuit comprises resistance R12, resistance R13 and diode D9, stable element comprises resistance R14, resistance R15 and electric capacity C6, phase-shifting trigger link comprises unijunction transistor BT, triode BG2 and electric capacity C5, low speed overcurrent protection link comprises relay J 1 and and controllable silicon KG1.
Generator main winding F connects output terminals A respectively, output B, output C and input D, output terminals A also connects inductance L 1 respectively, resistance R3, the K pole of diode D3 negative pole and controllable silicon KG1, output B is also connected to output C by relay J 2, input D also connects inductance L 1 other end respectively, diode D2 negative pole, the K pole of controllable silicon KG2 and resistance R2, the resistance R3 other end connects electric capacity C3, the resistance R2 other end connects electric capacity C2, the electric capacity C3 other end connects the A pole of controllable silicon KG1 respectively, the electric capacity C2 other end, diode D1 negative pole, electric capacity C1 and relay J 1, electric capacity C1 other end contact resistance R1, the resistance R1 other end connects fuse FR respectively, diode D1 positive pole, diode D2 positive pole, diode D3 positive pole, relay J 2 contact J2-1 and relay J 2 contact J2-2, the fuse FR other end connects excitation winding L, the excitation winding L other end connects relay J 1 other end respectively, relay J 2 contact J2-3 and relay J 2 contact J2-4, the relay J 2 contact J2-4 other end connects the relay J 2 contact J2-3 other end and key switch K1 respectively, the key switch K1 other end connects storage battery E positive pole, learn battery E negative pole contact resistance R6, the resistance R6 other end connects relay J 2 contact J2-1 and relay J 2 contact J2-2 respectively, the G pole connecting triode BG2 collector electrode of controllable silicon KG2, the G pole connecting triode BG1 collector electrode of controllable silicon KG1, triode BG1 emitter is connection transformer T1 coil L7 respectively, triode BG2 emitter, diode D4 negative pole, diode D5 negative pole, coil L2 and coil L3, coil L2 other end contact resistance R4, the resistance R4 other end connects diode D4 positive pole and triode BG1 base stage respectively, coil L3 other end contact resistance R5, the resistance R5 other end connects diode D5 positive pole and triode BG2 base stage respectively, the A pole connection transformer T1 coil L7 other end of controllable silicon KG2, transformer T1 coil L6 connects diode D7 negative pole respectively, the B1 pole of unijunction transistor BT, diode D6 positive pole, rectifier bridge Q1 pin 2, relay J 1 contact J1-1 and key switch K2, rectifier bridge Q1 pin 1 is connected to rectifier bridge Q1 pin 3 by inductance L 4, the key switch K2 other end connects relay J 1 contact J1-1 respectively, triode BG4 collector electrode, resistance R7, diode D6 negative pole and resistance R8, the resistance R8 other end connects rectifier bridge Q1 pin 4, the resistance R7 other end connects the B2 pole of unijunction transistor BT, the emitter contact resistance R9 and electric capacity C5 respectively of unijunction transistor BT, the electric capacity C5 other end connects diode D7 positive pole and the transformer T1 coil L6 other end respectively, the resistance R9 other end is connecting triode BG4 emitter respectively, electric capacity C6, resistance R16, resistance R12 and diode D9 positive pole, electric capacity C6 other end contact resistance R17, the resistance R17 other end is connecting triode BG4 base stage respectively, resistance R15 and electric capacity C7, the electric capacity C7 other end is the contact resistance R15 other end respectively, the resistance R16 other end and resistance R14, the resistance R14 other end is contact resistance R13 and diode D8 negative pole respectively, diode D8 positive pole is the contact resistance R12 other end and resistance R11 respectively, the resistance R11 other end is contact resistance R10 and electric capacity C4 respectively, the electric capacity C4 other end is the contact resistance R13 other end respectively, diode D9 negative pole and rectifier bridge Q2 pin 2, rectifier bridge Q2 pin 1 is connected to rectifier bridge Q2 pin 3 by inductance L 5, the rectifier bridge Q2 pin 4 contact resistance R10 other end.
Electric capacity C1, electric capacity C2, electric capacity C3, resistance R1 and resistance R2 form rc protection circuit.
Key switch K1, storage battery E and resistance R6 composition magnetizes and excitation link, when generator is without remanent magnetism, is magnetized by storage battery E.
Triode BG1 and triode BG2 forms pulse distribution link, and the conducting of triode BG1 and triode BG2 is controlled by transformer T1.
Operation principle of the present utility model is: the alternating current that generator main winding F exports is become direct current by the utility model after rectifier bridge Q2, resistance R10 and electric capacity C4, be added to the symmetrical bridge-type comparison loop be made up of resistance R12, resistance R13, diode D8 and diode D9 by resistance R11, diode D8 and diode D9 is as standard comparing voltage.
Refer to Fig. 1, as voltage U 1<U2, diode D8 and diode D9 is not yet breakdown, and electric current is very little, and the voltage drop therefore on resistance R2 and resistance R3 is very little; As U1>U2, diode D8 and diode D9 works, and on resistance R2, resistance R3, pressure drop is U1-U2.From detection comparing element output voltage control triode BG4, phase shift is carried out to the speed that electric capacity C5 charges, pulse after phase shift is added to pulse distribution link through transformer T1, triode BG1 conducting when the polarity of transformer T1 ensures that triode BG4 bears forward voltage, such trigger impulse is just added to controllable silicon KG1 by BG1 and controls extremely to go up, and makes controllable silicon KG1 not send into pulse when bearing reverse voltage.
Because generator remanent magnetism voltage is very low, thus control loop cannot work, and such controllable silicon KG1 just can not get trigger impulse and cannot conducting, so separately must add separate excitation link, is responsible for generator excitation.Detailed process is as follows: press excitation key switch K1, at this moment generator excitation winding is magnetized by storage battery E, so just has alternating voltage to export.Start voltage lower, its output voltage U1 rises along with generator voltage and increases, and triode BG4 equivalent internal resistance is reduced, and trigger impulse is reach just, and controllable silicon KG1 open angle increases gradually, contributes to excitation like this.When generator voltage rises to certain numerical value, at this moment along with generator voltage rises, its output voltage U2 reduces on the contrary.Thus controllable silicon KG1 open angle also reduces, and is raised to rated voltage with regard to steady operation always.Relay J 2 action when generator voltage rises to about 90% rated voltage, cuts off storage battery E, makes generator voltage too high in order to avoid continue to magnetize and damage controllable silicon.Because J2 contact capacity is less, so utilize two pairs of normally-closed contact J2-1 ~ J2-4 connection in series-parallel to use.
So when generator voltage offrating, the utility model circuit regulates exciting current that generator voltage is stablized by said process automatically.
Claims (4)
1. a synchronous generator exciting regulates protective circuit, comprise comparing element, detecting bridge circuit, stable element, phase-shifting trigger link and low speed overcurrent protection link, it is characterized in that, described comparing element comprises generator main winding F, excitation winding L, rectifier bridge Q2, resistance R10 and electric capacity C4, described detecting bridge circuit comprises resistance R12, resistance R13 and diode D9, described stable element comprises resistance R14, resistance R15 and electric capacity C6, described phase-shifting trigger link comprises unijunction transistor BT, triode BG2 and electric capacity C5, described low speed overcurrent protection link comprise relay J 1 and and controllable silicon KG1,
Described generator main winding F connects output terminals A respectively, output B, output C and input D, described output terminals A also connects inductance L 1 respectively, resistance R3, the K pole of diode D3 negative pole and controllable silicon KG1, described output B is also connected to output C by relay J 2, described input D also connects inductance L 1 other end respectively, diode D2 negative pole, the K pole of controllable silicon KG2 and resistance R2, the described resistance R3 other end connects electric capacity C3, the described resistance R2 other end connects electric capacity C2, the described electric capacity C3 other end connects the A pole of controllable silicon KG1 respectively, the electric capacity C2 other end, diode D1 negative pole, electric capacity C1 and relay J 1, electric capacity C1 other end contact resistance R1, the resistance R1 other end connects fuse FR respectively, diode D1 positive pole, diode D2 positive pole, diode D3 positive pole, relay J 2 contact J2-1 and relay J 2 contact J2-2, the described fuse FR other end connects excitation winding L, the excitation winding L other end connects relay J 1 other end respectively, relay J 2 contact J2-3 and relay J 2 contact J2-4, the relay J 2 contact J2-4 other end connects the relay J 2 contact J2-3 other end and key switch K1 respectively, the key switch K1 other end connects storage battery E positive pole, learn battery E negative pole contact resistance R6, the resistance R6 other end connects relay J 2 contact J2-1 and relay J 2 contact J2-2 respectively, the G pole connecting triode BG2 collector electrode of described controllable silicon KG2, the G pole connecting triode BG1 collector electrode of described controllable silicon KG1, triode BG1 emitter is connection transformer T1 coil L7 respectively, triode BG2 emitter, diode D4 negative pole, diode D5 negative pole, coil L2 and coil L3, described coil L2 other end contact resistance R4, the resistance R4 other end connects diode D4 positive pole and triode BG1 base stage respectively, described coil L3 other end contact resistance R5, the resistance R5 other end connects diode D5 positive pole and triode BG2 base stage respectively, the A pole connection transformer T1 coil L7 other end of described controllable silicon KG2, described transformer T1 coil L6 connects diode D7 negative pole respectively, the B1 pole of unijunction transistor BT, diode D6 positive pole, rectifier bridge Q1 pin 2, relay J 1 contact J1-1 and key switch K2, described rectifier bridge Q1 pin 1 is connected to rectifier bridge Q1 pin 3 by inductance L 4, the described key switch K2 other end connects relay J 1 contact J1-1 respectively, triode BG4 collector electrode, resistance R7, diode D6 negative pole and resistance R8, the resistance R8 other end connects rectifier bridge Q1 pin 4, the described resistance R7 other end connects the B2 pole of unijunction transistor BT, the emitter contact resistance R9 and electric capacity C5 respectively of described unijunction transistor BT, the electric capacity C5 other end connects diode D7 positive pole and the transformer T1 coil L6 other end respectively, the described resistance R9 other end is connecting triode BG4 emitter respectively, electric capacity C6, resistance R16, resistance R12 and diode D9 positive pole, described electric capacity C6 other end contact resistance R17, the resistance R17 other end is connecting triode BG4 base stage respectively, resistance R15 and electric capacity C7, the electric capacity C7 other end is the contact resistance R15 other end respectively, the resistance R16 other end and resistance R14, the resistance R14 other end is contact resistance R13 and diode D8 negative pole respectively, diode D8 positive pole is the contact resistance R12 other end and resistance R11 respectively, the resistance R11 other end is contact resistance R10 and electric capacity C4 respectively, the electric capacity C4 other end is the contact resistance R13 other end respectively, diode D9 negative pole and rectifier bridge Q2 pin 2, rectifier bridge Q2 pin 1 is connected to rectifier bridge Q2 pin 3 by inductance L 5, the rectifier bridge Q2 pin 4 contact resistance R10 other end.
2. synchronous generator exciting according to claim 1 regulates protective circuit, and it is characterized in that, described electric capacity C1, electric capacity C2, electric capacity C3, resistance R1 and resistance R2 form rc protection circuit.
3. synchronous generator exciting according to claim 1 regulates protective circuit, it is characterized in that, described key switch K1, storage battery E and resistance R6 composition magnetizes and excitation link, when generator is without remanent magnetism, is magnetized by storage battery E.
4. synchronous generator exciting according to claim 1 regulates protective circuit, it is characterized in that, described triode BG1 and triode BG2 forms pulse distribution link, and the conducting of triode BG1 and triode BG2 is controlled by transformer T1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611946.7U CN204231248U (en) | 2014-10-22 | 2014-10-22 | A kind of synchronous generator exciting regulates protective circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420611946.7U CN204231248U (en) | 2014-10-22 | 2014-10-22 | A kind of synchronous generator exciting regulates protective circuit |
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| CN204231248U true CN204231248U (en) | 2015-03-25 |
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| CN201420611946.7U Expired - Fee Related CN204231248U (en) | 2014-10-22 | 2014-10-22 | A kind of synchronous generator exciting regulates protective circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2774920C2 (en) * | 2020-09-28 | 2022-06-24 | Абдул-Вахаб Ахмедович Саидов | Device for control of speed of synchronous engine and its protection from asynchronous mode |
-
2014
- 2014-10-22 CN CN201420611946.7U patent/CN204231248U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2774920C2 (en) * | 2020-09-28 | 2022-06-24 | Абдул-Вахаб Ахмедович Саидов | Device for control of speed of synchronous engine and its protection from asynchronous mode |
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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 |
Granted publication date: 20150325 Termination date: 20151022 |
|
| EXPY | Termination of patent right or utility model |