CN206471829U - A kind of breaker phase-controlled synchronous cooking circuit - Google Patents
A kind of breaker phase-controlled synchronous cooking circuit Download PDFInfo
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- CN206471829U CN206471829U CN201720075449.3U CN201720075449U CN206471829U CN 206471829 U CN206471829 U CN 206471829U CN 201720075449 U CN201720075449 U CN 201720075449U CN 206471829 U CN206471829 U CN 206471829U
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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
- Y02E40/30—Reactive power compensation
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Abstract
The utility model is related to a kind of breaker phase-controlled synchronous cooking circuit, and synchronous cooking circuit is electrically connected with voltage transformer, and A, B two-phase secondary winding of voltage transformer are electrically connected a synchronous cooking circuit；Synchronous cooking circuit includes electrical isolation loop and Phase sequence detection loop, and electrical isolation loop, which includes isolating transformer Phase sequence detection loop, includes first voltage comparator, second voltage comparator and an OR-NOT circuit.The signal passed over by voltage transformer is carried out electrical isolation by the utility model due to being provided with electrical isolation loop, is excluded signal interference and is being carried out Phase sequence detection, improves the precision of detection；Due to being provided with Phase sequence detection loop, by detecting the zero-crossing pulse of A phases and B phases, judge in phase sequence and phase, the utility model, the width of zero-crossing pulse is smaller, improves accuracy of detection.
Description
Technical field
The utility model is related to power system device technical field, more particularly to a kind of same step of breaker phase-controlled
Manage circuit.
Background technology
Reactive-load compensation equipment is a kind of important equipment in power system, in the switching of reactive-load compensation equipment, generation
Shoving can cause harm with overvoltage to power equipment, to reduce the harm of power system, in the prior art, general using synchronous
Technology switching reactive-load compensation equipment, makes vacuum circuit breaker in designated phase angle on/off switch by phase-controlled.
Because the phase-controlled of vacuum circuit breaker closes each specified angle at 0-360 ° of control vacuum circuit breaker
Lock and separating brake, are shoved and overvoltage with suppress to produce in electric power switched capacitor or inductor, therefore in phase-controlled, together
Vital link during step detection, synchronously detects the accuracy and control accuracy of type selecting control.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of accuracy of detection height, and signal disturbs small breaker
Phase-controlled synchronous cooking circuit.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of same step of breaker phase-controlled
Circuit is managed, the synchronous cooking circuit input end is electrically connected with voltage transformer, and the output end of the synchronous cooking circuit is electrically connected
It is connected to phase-controlled device, the voltage transformer includes A, B, C three-phase first winding and A, B, C three-phase secondary winding, the A,
B, C three-phase first winding are electrically connected with the A phases, B phases or C of bus respectively, and A, B two-phase secondary winding is electrically connected
One synchronous cooking circuit；The synchronous cooking circuit includes electrical isolation loop and Phase sequence detection loop, the electricity
Gas isolated loop includes two inputs and two output ends electrically connected with the secondary winding of voltage transformer corresponding phase,
One of output end is electrically connected as detection voltage input end with the Phase sequence detection loop；The Phase sequence detection loop includes
In first voltage comparator, second voltage comparator and an OR-NOT circuit, the electrical isolation loop with for detection voltage
The output end of input be respectively electrically connected to the first voltage comparator inverting input and second voltage comparator it is same
Phase input, the in-phase input end of first voltage comparator electrically connects the first comparison voltage input, and the second voltage compares
The inverting input of device electrically connects the second comparison voltage input, and second comparison voltage is more than the first comparison voltage, described
The output end of first voltage comparator and the output end of the second voltage comparator are electrically connected to the two of the OR-NOT circuit
Individual input, the output end of the OR-NOT circuit is electrically connected to the zero-crossing pulse test side of phase-controlled device.
As preferred technical scheme, the electrical isolation loop includes isolating transformer, the one of the isolating transformer
The input of secondary winding is electrically connected with the secondary winding of voltage transformer corresponding phase, the secondary winding of the isolating transformer
Two output ends are electrically connected with the Phase sequence detection loop.
As preferred technical scheme, the first winding of the isolating transformer is also parallel with a piezo-resistance and one
Individual diac.
As preferred technical scheme, the synchronous cooking circuit also includes comparison voltage and produces loop, and the comparison is electric
Pressure, which produces loop, includes a power input electrically connected with input power, the first adjustment resistance, the second adjustment resistance, the 3rd
Resistance and the 4th adjustment resistance are adjusted, it is defeated provided with the second comparison voltage between the first adjustment resistance and the second adjustment resistance
Go out end, the output end of the first comparison voltage is provided between the 3rd adjustment resistance and the 4th adjustment resistance.
As preferred technical scheme, the output end of the first voltage comparator and the output end of second voltage comparator
Also it is parallel with filter circuit.
By adopting the above-described technical solution, the beneficial effects of the utility model are：The utility model is due to being provided with electricity
Gas isolated loop, electrical isolation is carried out by the signal passed over by voltage transformer, is excluded signal interference and is being carried out phase sequence inspection
Survey, improve the precision of detection；Due to being provided with Phase sequence detection loop, by detecting the zero-crossing pulse of A phases and B phases, phase is judged
In sequence and phase, the utility model, the width of zero-crossing pulse is smaller, improves accuracy of detection.
Phase sequence detection loop is provided with two voltage comparators, when input voltage is between 1.19V and 1.21V to phase selection
Controller output signal, sensitivity is higher, and control accuracy is high, and phase-controlled device carries out the precision of on/off switch control formulating phase
Higher, accuracy rate is high, improves the safety and stability of power network, reduces the damage shoved with overvoltage to power equipment.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the theory diagram of the utility model embodiment；
Fig. 2 is that A is synchronised the circuit theory diagrams of modulate circuit in the utility model embodiment；
Fig. 3 is the circuit theory diagrams in comparison voltage generation loop in the utility model embodiment.
Embodiment
As shown in figure 1, a kind of breaker phase-controlled synchronous cooking circuit, the synchronous cooking circuit input end and voltage
Transformer is electrically connected, and the output end of synchronous cooking circuit is electrically connected to phase-controlled device, and voltage transformer includes A, B, C three-phase one
Secondary winding and A, B, C three-phase secondary winding, A phase UA, the B phases of A, B, C three-phase first winding of voltage transformer respectively with bus
UB or C phases UC is electrically connected, and A, B two-phase secondary winding are electrically connected a synchronous cooking circuit：A phases secondary winding electrically connects A
Be synchronised modulate circuit, and B phases secondary winding electrical connection B is synchronised modulate circuit.
A as illustrated in FIG. 2 is synchronised modulate circuit, and synchronous cooking circuit includes electrical isolation loop and Phase sequence detection
Loop, electrical isolation loop includes two inputs and two electrically connected with the secondary winding of voltage transformer corresponding phase
Output end, one of output end is electrically connected as detection voltage input end with Phase sequence detection loop, and electrical isolation loop includes
Isolating transformer PTA, the input and the secondary winding PH_A of voltage transformer A phases of isolating transformer PTA first winding,
PTA_2 is electrically connected, and two output ends of the secondary winding of isolating transformer are electrically connected with Phase sequence detection loop.
Isolating transformer PTA first winding is also parallel with a piezo-resistance RYA and a diac
DT1。
Phase sequence detection loop includes first voltage comparator U7B, second voltage comparator U7A and an OR-NOT circuit
It is respectively electrically connected to first voltage comparator U7B's with the output end for detection voltage input end in U10A, electrical isolation loop
The in-phase input end of inverting input and second voltage comparator U7A, the in-phase input end electrical connection the of first voltage comparator
One comparison voltage input is 1.19V voltage input ends, and second voltage comparator U7A inverting input electrical connection second is compared
Voltage input end is 1.21V voltage input ends, and the second comparison voltage 1.21V is more than the first comparison voltage 1.19V, first voltage ratio
The output end of output end and second voltage comparator U7A compared with device U7B is electrically connected to OR-NOT circuit U10A two inputs,
The output end of OR-NOT circuit is electrically connected to the A phase zero-crossing pulses test side A_DYMCI of phase-controlled device.
First voltage comparator U7B output end and second voltage comparator U7A output end are also parallel with filter circuit,
Filter circuit includes resistance R77, R78, electric capacity C73, CA3, C6, inductance I2.
OR-NOT circuit U10A input power is provided after also passing through above-mentioned filter circuit filtering for OR-NOT circuit U10A
Working power.
As shown in figure 3, synchronous cooking circuit, which also includes comparison voltage, produces loop, comparison voltage, which produces loop, includes one
Power input, the first adjustment resistance R83, the second adjustment resistance R84, the 3rd adjustment resistance electrically connected with 5V input powers
It is defeated provided with the second comparison voltage between the adjustment of R85 and the 4th resistance R86, the first adjustment resistance R83 and the second adjustment resistance R84
Go out end i.e. 1.21V power output ends, the first comparison voltage is provided between the 3rd adjustment resistance R85 and the 4th adjustment resistance R86
Output end 1.19V power output ends.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (5)
1. a kind of breaker phase-controlled synchronous cooking circuit, it is characterised in that：The synchronous cooking circuit input end and electricity
Transformer electrical connection is pressed, the output end of the synchronous cooking circuit is electrically connected to phase-controlled device, and the voltage transformer includes
A, B, C three-phase first winding and A, B, C three-phase secondary winding, A phases, the B phases of A, B, C three-phase first winding respectively with bus
Or C is electrically connected, A, B two-phase secondary winding is electrically connected a synchronous cooking circuit；The synchronous cooking electricity
Road includes electrical isolation loop and Phase sequence detection loop, and the electrical isolation loop includes two phases corresponding with voltage transformer
The input and two output ends of the secondary winding electrical connection of position, one of output end are used as detection voltage input end and institute
State the electrical connection of Phase sequence detection loop；The Phase sequence detection loop includes first voltage comparator, second voltage comparator and one
First electricity is respectively electrically connected in OR-NOT circuit, the electrical isolation loop with the output end for detection voltage input end
Press the inverting input of comparator and the in-phase input end of second voltage comparator, the in-phase input end electricity of first voltage comparator
The first comparison voltage input is connected, the inverting input of the second voltage comparator electrically connects the input of the second comparison voltage
End, second comparison voltage is more than the first comparison voltage, output end and the second voltage of the first voltage comparator
The output end of comparator is electrically connected to two inputs of the OR-NOT circuit, the output end electrical connection of the OR-NOT circuit
To the zero-crossing pulse test side of phase-controlled device.
2. a kind of breaker phase-controlled synchronous cooking circuit as claimed in claim 1, it is characterised in that：It is described electrically every
Include isolating transformer, the input of the first winding of the isolating transformer and the two of voltage transformer corresponding phase from loop
Secondary winding electrical connection, two output ends of the secondary winding of the isolating transformer are electrically connected with the Phase sequence detection loop.
3. a kind of breaker phase-controlled synchronous cooking circuit as claimed in claim 2, it is characterised in that：The isolation becomes
The first winding of depressor is also parallel with a piezo-resistance and a diac.
4. a kind of breaker phase-controlled synchronous cooking circuit as claimed in claim 1, it is characterised in that：The same step
Managing circuit also includes comparison voltage generation loop, and the comparison voltage, which produces loop, includes an electricity electrically connected with input power
Source input, the first adjustment resistance, the second adjustment resistance, the 3rd adjustment resistance and the 4th adjustment resistance, first adjustment
Resistance and second adjustment resistance between be provided with the second comparison voltage output end, it is described 3rd adjustment resistance and the 4th adjustment resistance it
Between be provided with the first comparison voltage output end.
5. a kind of breaker phase-controlled synchronous cooking circuit as claimed in claim 1, it is characterised in that：First electricity
The output end of comparator and the output end of second voltage comparator is pressed also to be parallel with filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720075449.3U CN206471829U (en) | 2017-01-22 | 2017-01-22 | A kind of breaker phase-controlled synchronous cooking circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720075449.3U CN206471829U (en) | 2017-01-22 | 2017-01-22 | A kind of breaker phase-controlled synchronous cooking circuit |
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| Publication Number | Publication Date |
|---|---|
| CN206471829U true CN206471829U (en) | 2017-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720075449.3U Active CN206471829U (en) | 2017-01-22 | 2017-01-22 | A kind of breaker phase-controlled synchronous cooking circuit |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975601A (en) * | 2019-04-29 | 2019-07-05 | 广东铁峰信息技术有限公司 | For crossing the signal conditioning circuit of individual-phase control device |
| CN110456174A (en) * | 2019-08-16 | 2019-11-15 | 智洋创新科技股份有限公司 | Three-phase synchronous method and system based on crystal oscillator ratio clock synchronization |
| CN116449122A (en) * | 2023-06-16 | 2023-07-18 | 创辉科技有限公司 | Fault detection circuit of power supply system |
-
2017
- 2017-01-22 CN CN201720075449.3U patent/CN206471829U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975601A (en) * | 2019-04-29 | 2019-07-05 | 广东铁峰信息技术有限公司 | For crossing the signal conditioning circuit of individual-phase control device |
| CN110456174A (en) * | 2019-08-16 | 2019-11-15 | 智洋创新科技股份有限公司 | Three-phase synchronous method and system based on crystal oscillator ratio clock synchronization |
| CN110456174B (en) * | 2019-08-16 | 2022-05-17 | 智洋创新科技股份有限公司 | Three-phase synchronization method and system based on crystal oscillator proportional time synchronization |
| CN116449122A (en) * | 2023-06-16 | 2023-07-18 | 创辉科技有限公司 | Fault detection circuit of power supply system |
| CN116449122B (en) * | 2023-06-16 | 2023-08-18 | 创辉科技有限公司 | Fault detection circuit of power supply system |
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