CN2792019Y - Trigger switching circuit for two-channel exciting device for synchrounous generator set - Google Patents
Trigger switching circuit for two-channel exciting device for synchrounous generator set Download PDFInfo
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- CN2792019Y CN2792019Y CN 200520078600 CN200520078600U CN2792019Y CN 2792019 Y CN2792019 Y CN 2792019Y CN 200520078600 CN200520078600 CN 200520078600 CN 200520078600 U CN200520078600 U CN 200520078600U CN 2792019 Y CN2792019 Y CN 2792019Y
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Abstract
The utility model relates to a trigger pulse switching circuit for a two-channel exciting device for a synchrounous generator set, which comprises analog switches U1 and U2, a trigger U3, an OR gate U4 and a clear circuit. The leg 12, the leg 13, the leg 2, the leg 1, the leg 5 and the leg 3 of the analog switch U1 are respectively connected with a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5 and a resistor R6 in series. The leg 6 and the leg 7 of the analog switch U1 are connected with the leg 6 and the leg 7 of the analog switch U2 and are connected with the ground. The leg 9, the leg 10 and the leg 11 of the analog switch U1 are connected with the leg 9, the leg 10 and the leg 11 of the analog switch U2 and are connected with the leg 1 of the trigger U3. The leg 3 of the trigger U3 is connected with the leg 3 of the OR gate U4, the 5 leg of the trigger U3 is connected with the leg 2 of the trigger U3, and the leg 6 of the trigger U3 is connected with the ground. The clear circuit comprises a capacitor C1 connected with the resistor R13 in series and connected with the leg 4 of the trigger U3. The utility model has the advantages of ingenious design, short switching time (ns grade), simple structure, reliable control and low cost, and is widely used for medium-sized and small-sized exciting devices for synchronous generator sets.
Description
Technical field
The utility model relates to a kind of trigger impulse commutation circuit, relates in particular to a kind of trigger impulse commutation circuit of synchronous generator unit binary channels excitation unit.
Background technology
Along with power system development, more and more higher to the reliability requirement of generator excitation system, the excitation system that operates in power plant now adopts binary channels or multi-channel redundant structure more.When a channel failure, automatically switch to another passage operation, improved the reliability of generator operation, so switch unit is the key component of binary channels excitation system.The switch unit of the excitation system of power plant's operation at present generally adopts relay, though this method is simple, because be the ms level switching time of relay, is easy to generate impact during switching, is difficult to satisfy the requirement of excitation system.
Summary of the invention
Do the problem that switch unit is easy to generate impact in order to solve relay, the purpose of this utility model provides a kind of trigger impulse commutation circuit of synchronous generator unit binary channels excitation unit, alternative relay is done switch unit, and only be the ns level switching time, and control is reliable.
The technical scheme that the utility model adopted is, the trigger impulse commutation circuit of synchronous generator unit binary channels excitation unit, comprise analog switch U1 and U2, trigger U3, or door U4 and clear circuit, 12 pin of analog switch U1,13 pin, 2 pin, 1 pin, 5 pin, 3 pin respectively with resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6 polyphones, 6 pin of analog switch U1,6 pin of 7 pin and analog switch U2,7 pin connect and ground connection, 9 pin of analog switch U1,10 pin, 9 pin of 11 pin and analog switch U2,10 pin, 11 pin link to each other, and be connected with 1 pin of trigger U3,3 pin of trigger U3 with or the door U4 3 pin be connected, 5 pin of trigger U3 are connected with 2 pin, 6 pin ground connection, clear circuit comprises capacitor C 1, capacitor C 1 is contacted with resistance R 13, and is connected with 4 pin of trigger U3.
Characteristics of the present utility model also are: analog switch U1, U2 adopt CD4053; Trigger U3 adopts CD4013; Or door U4 adopts CD4071.
The utility model deft design, switching time short (ns level), simple in structure, control is reliable, cost is low is widely used in middle-size and small-size synchronous generator unit excitation unit.
Description of drawings
The pseudo-circuit theory diagrams of the present utility model of accompanying drawing.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
In the accompanying drawing, the trigger impulse commutation circuit of synchronous generator unit binary channels excitation unit comprises analog switch U1 and U2, trigger U3 or door U4 and clear circuit.Analog switch U1, U2 adopt CD4053, and trigger U3 adopts CD4013, or door U4 adopts CD4071.12 pin of analog switch U1,13 pin, 2 pin, 1 pin, 5 pin, 3 pin respectively with resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6 polyphones, 6 pin of analog switch U1,6 pin of 7 pin and analog switch U2,7 pin connect and ground connection, 9 pin of analog switch U1,10 pin, 9 pin of 11 pin and analog switch U2,10 pin, 11 pin link to each other, and be connected with 1 pin of trigger U3,3 pin of trigger U3 with or the door U4 3 pin be connected, 5 pin of trigger U3 link to each other with 2 pin, 6 pin ground connection, described clear circuit comprises capacitor C 1, capacitor C 1 is contacted with resistance R 13, and is connected with 4 pin of trigger U3.
With the A switch pulse with or the door U4 1 pin link to each other, the B switch pulse with or the door U4 2 pin link to each other, No. 1 of A machine, No. 3,5 feel the pulse dashes respectively by current-limiting resistance R1, R3, R5 links 12 pin of analog switch U1,2 pin and 5 pin, No. 4 of A machine, No. 6,2 feel the pulse dashes respectively by current-limiting resistance R7, R9, R11 links 12 pin of analog switch U2,2 pin and 5 pin, No. 1 of B machine, No. 3,5 feel the pulse dashes respectively by current-limiting resistance R2, R4, R6 links 13 pin of analog switch U1,1 pin and 3 pin, No. 4 of B machine, No. 6,2 feel the pulse dashes respectively by current-limiting resistance R8, R10, R12 links 13 pin of analog switch U2,1 pin and 3 pin.
When circuit of the present utility model has just been switched on, it is 0 that the clear circuit of being made up of resistance R 13 and capacitor C 1 makes the in-phase output end Q of trigger U3, at this moment analog switch passage 0 conducting, the 1-6 of A machine feels the pulse towards conducting, when switch pulse, it is 1 that trigger U3 counter-rotating makes in-phase output end Q, analog switch passage 1 conducting at this moment, the 1-6 of B machine feels the pulse towards conducting, has so just realized the switching of trigger impulse.
Claims (4)
1. the trigger impulse commutation circuit of synchronous generator unit binary channels excitation unit, it is characterized in that, comprise analog switch U1 and U2, trigger U3, or door U4 and clear circuit, 12 pin of described analog switch U1,13 pin, 2 pin, 1 pin, 5 pin, 3 pin respectively with resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6 polyphones, 6 pin of analog switch U1,6 pin of 7 pin and analog switch U2,7 pin connect and ground connection, 9 pin of analog switch U1,10 pin, 9 pin of 11 pin and analog switch U2,10 pin, 11 pin link to each other, and be connected with 1 pin of trigger U3,3 pin of trigger U3 with or the door U4 3 pin be connected, 5 pin of trigger U3 are connected with 2 pin, 6 pin ground connection, described clear circuit comprises capacitor C 1, capacitor C 1 is contacted with resistance R 13, and is connected with 4 pin of trigger U3.
2. commutation circuit according to claim 1 is characterized in that, described analog switch U1, U2 adopt CD4053.
3. commutation circuit according to claim 1 is characterized in that, described trigger U3 adopts CD4013.
4. commutation circuit according to claim 1 is characterized in that, described or door U4 adopts CD4071.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078600 CN2792019Y (en) | 2005-04-11 | 2005-04-11 | Trigger switching circuit for two-channel exciting device for synchrounous generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520078600 CN2792019Y (en) | 2005-04-11 | 2005-04-11 | Trigger switching circuit for two-channel exciting device for synchrounous generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2792019Y true CN2792019Y (en) | 2006-06-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520078600 Expired - Fee Related CN2792019Y (en) | 2005-04-11 | 2005-04-11 | Trigger switching circuit for two-channel exciting device for synchrounous generator set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2792019Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100407561C (en) * | 2006-07-21 | 2008-07-30 | 杭州中信网络自动化有限公司 | Digital fixed frequency anti-interference circuit |
| CN101145752B (en) * | 2007-08-17 | 2010-06-02 | 国电南京自动化股份有限公司 | Channel switching technology of generator excitation adjusting device |
-
2005
- 2005-04-11 CN CN 200520078600 patent/CN2792019Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100407561C (en) * | 2006-07-21 | 2008-07-30 | 杭州中信网络自动化有限公司 | Digital fixed frequency anti-interference circuit |
| CN101145752B (en) * | 2007-08-17 | 2010-06-02 | 国电南京自动化股份有限公司 | Channel switching technology of generator excitation adjusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060628 |