CN203504129U - Component for determining breaker switching on/off signal generation - Google Patents
Component for determining breaker switching on/off signal generation Download PDFInfo
- Publication number
- CN203504129U CN203504129U CN201320599005.1U CN201320599005U CN203504129U CN 203504129 U CN203504129 U CN 203504129U CN 201320599005 U CN201320599005 U CN 201320599005U CN 203504129 U CN203504129 U CN 203504129U
- Authority
- CN
- China
- Prior art keywords
- resistor
- signal
- circuit
- output
- optocoupler
- 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
Abstract
The utility model discloses a component for determining breaker switching on/off signal generation. The component for determining signal generation includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, an AC-DC circuit, an optocoupler and a power source. A second terminal of the first resistor is connected with a first input terminal of the AC-DC circuit, a second terminal of the second resistor is connected with an input terminal of the AC-DC circuit, and an output terminal of the AC-DC circuit is connected with a first terminal of the third resistor; an output terminal of the optocoupler and a second terminal of the fourth resistor are respectively connected with a first terminal of the second capacitor; and a first terminal of the fourth resistor is connected with the power source, and a second terminal of the second capacitor and the output terminal of the optocoupler are respectively grounded. According to the component for determining the breaker switching on-off signal generation, the defects that the influence of non-ideal factors is strong due to mechanical detection, and rotary devices are prone to malfunction are overcome. Therefore, the accuracy of detection results is high.
Description
Technical field
The utility model relates to electric automatization and the communications field, relates in particular to a kind of circuit-breaker switching on-off judgement signal generator part.
Background technology
Modern society be unable to do without electric energy, and in power transmission and distribution process, circuit breaker occupies extremely important position, and occupation rate of market is high, and circuit breaker mainly contains switch and protection two large functions, and wherein, defencive function is the very important use function of circuit breaker.In general, the defencive function of circuit breaker is mainly realized by leakage switch, and when the leakage current in circuit surpasses predetermined value, leakage switch can disconnect automatically.
Power system operation experience shows, the overhead transmission line overwhelming majority's fault is all " instantaneity ", and permanent fault is generally less than 10%.Therefore, after by relaying protection action excision short trouble, electric arc is by automatic distinguishing, and the insulation of short circuit place can recover automatically in most cases.Now circuit breaker is overlapped, not only improved the safety and reliability of power supply, reduce loss of outage, but also improved the transient state level of electric power system, also can correct the mistrip causing due to circuit breaker, therefore, the circuit breaker using now mostly has reclosing, and so-called coincidence, just refers to after circuit breaker disconnects, through after a while, the process of close circuit breaker again.
In actual applications, electric power system need to detect the closure state of reclosing circuit breaker at any time, and existing electric leakage reclosing circuit breaker adopts the mechanical system detection of closing a floodgate, by traditional mechanics method transmission switching signal.The major defect of this mechanical detection mode is: affected by non-ideal factor larger, mechanical aging is fast, the easy fault of rotating device, measurement result inaccuracy.
Utility model content
In view of this, the utility model provides a kind of circuit-breaker switching on-off judgement signal generator part, the problems such as affected by non-ideal factor larger, and mechanical aging is fast, the easy fault of rotating device that overcome that mechanical detection causes, and measurement result accuracy is high.
The utility model embodiment provides a kind of reclosing circuit-breaker switching on-off judgement signal generator part, comprise: the first resistor, the second resistor, the 3rd resistor, the 4th resistor, the first capacitor, the second capacitor, interchange turns DC circuit, optocoupler and DC power supply, described the first resistor first end is connected with breaker signal output, be used for inputting circuit breaker output signal, described first resistor the second end turns DC circuit first input end and is connected with described interchange, described the second resistor first end is connected with reference signal output, for input reference signal, described second resistor the second end turns DC circuit the second input and is connected with described interchange, described interchange turns DC circuit cathode output end and is connected with described the 3rd resistor first end, described interchange turns DC circuit cathode output end, described first capacitor the second end is connected respectively with the negative input of described optocoupler, described the 3rd resistor the second end, described the first capacitor first end is connected respectively with the electrode input end of described optocoupler, the first output of described optocoupler, described the 4th resistor the second end is connected respectively with described the second capacitor first end, described the 4th resistor first end is connected with described DC power supply, the second output of described second capacitor the second end and described optocoupler is ground connection respectively, divide-shut brake judgement signal is exported by the first output of described optocoupler,
Wherein, when having switching voltage poor between described circuit breaker output signal and described reference signal, the divide-shut brake judgement signal of output is low level signal, when not having switching voltage poor between described circuit breaker output signal and described reference signal, the divide-shut brake of output judgement signal is high level signal.
In the possible implementation of the first, described breaker signal is arbitrary measuring-signal of going up mutually in three-phase in the three-phase and four-line of reclosing circuit breaker lower end, and described reference signal is the measuring-signal on the neutral line in the three-phase and four-line of reclosing circuit breaker lower end.
In the possible implementation of the second, described parts also comprise varistor, and described varistor first end is connected with described the first resistor first end, and described varistor the second end is connected with described the second resistor first end.
In the third possible implementation, described interchange turns DC circuit and further comprises: the first diode, the second diode, the 3rd diode and the 4th diode, the positive pole of described the first diode, the 4th positive pole of diode and the negative input of described optocoupler are connected respectively, the negative pole of described the first diode, the positive pole of described the second diode is connected respectively with described first resistor the second end, the negative pole of described the second diode, the negative pole of described the 3rd diode is connected respectively with described the 3rd resistor first end, the positive pole of described the 3rd diode, the negative pole of the 4th diode is connected respectively with described second resistor the second end.
In the 4th kind of possible implementation, described the first capacitor is electrolytic capacitor, and wherein, the positive pole of described the first capacitor is connected with the electrode input end of described optocoupler, and the negative pole of described the first capacitor is connected with the negative input of described optocoupler.
In the 5th kind of possible implementation, described optocoupler is NPN triode output type optocoupler, wherein, and the first output that the collector terminal of described NPN triode is described optocoupler, the second output that the emitter terminal of described NPN triode is described optocoupler.
In the 6th kind of possible implementation, the magnitude of voltage of described DC power supply is+5V.
The utility model embodiment is by gathering the output signal of reclosing circuit breaker lower port, mode with electronics is processed this output signal, obtain the technological means of corresponding divide-shut brake judgement signal, overcome that mechanical detection causes affected by non-ideal factor larger, the technical problems such as mechanical aging is fast, the easy fault of rotating device, when making to only have when the real combined floodgate of circuit breaker or disconnecting successfully, just can produce corresponding divide-shut brake judgement signal, measurement result accuracy is high.
Accompanying drawing explanation
Fig. 1 is the structure chart of the reclosing circuit-breaker switching on-off judgement signal generator part of the utility model the first embodiment;
Fig. 2 is the structure chart of a kind of preferred implementation of the utility model the first embodiment;
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model specific embodiment is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the utility model, but not to restriction of the present utility model.It also should be noted that, for convenience of description, in accompanying drawing, only show the part relevant to the utility model but not full content.
The first embodiment
Fig. 1 is the structure chart of the reclosing circuit-breaker switching on-off judgement signal generator part of the utility model the first embodiment.As shown in Figure 1, described parts comprise:
The first resistor R1, the second resistor R2, the 3rd resistor R3, the 4th resistor R4, the first capacitor C1, the second capacitor C2, interchange turn DC circuit U1, optocoupler U2 and DC power supply Vcc.
Wherein, the first resistor R1 first end is connected with breaker signal output, first resistor R1 the second end turns DC circuit U1 first input end and is connected with described interchange, the second resistor R2 first end is connected with reference signal output, second resistor R2 the second end turns DC circuit U1 the second input and is connected with exchanging, interchange turns DC circuit U1 cathode output end and is connected with the 3rd resistor R3 first end, interchange turns DC circuit U1 cathode output end, first capacitor C1 the second end is connected respectively with the negative input of optocoupler U2, the 3rd resistor R3 the second end, the first capacitor C1 first end is connected respectively with the electrode input end of optocoupler U2, the first output of optocoupler U2, the 4th resistor R4 the second end is connected respectively with the second capacitor C2 first end, the 4th resistor R4 first end is connected with DC power supply Vcc, the second output of second capacitor C2 the second end and optocoupler U2 is ground connection respectively, wherein, divide-shut brake judgement signal is exported by the first output of optocoupler U2,
Wherein, when having switching voltage poor between described circuit breaker output signal and described reference signal, the divide-shut brake judgement signal of output is low level signal, when not having switching voltage poor between described circuit breaker output signal and described reference signal, the divide-shut brake of output judgement signal is high level signal.
In the present embodiment, circuit breaker output signal and reference signal are the measuring-signal on reclosing circuit breaker.This measuring-signal is ac voltage signal.
In actual applications, in order to guarantee normal operation of circuit breaker, live wire, zero line all must, by the zero-sequence transformer in circuit breaker, just can make the magnetic field in zero-sequence transformer cancel out each other, if only have single line to pass through zero-sequence transformer, in mutual inductor coil, just have so magnetic field and be converted into electric current, cause release work and produce separating brake, therefore, circuit breaker in use, power supply must enter from the upper end of circuit breaker, under bring out.
For example, general civilian power system is after reclosing breaker closing, from the power taking of circuit breaker lower end, can find, in the three-phase and four-line of circuit breaker lower end, in A, B, C three-phase, the alternating voltage between two-phase is 380V arbitrarily, alternating voltage in A, B, C three-phase between arbitrary phase and the neutral line is 220V, wherein, the switching voltage that 380V and 220V are the present embodiment is poor.
Certainly, corresponding to different power communication systems, switching voltage extent is not identical yet, and this is not limited.
After reclosing breaker open operation, the voltage in the three-phase and four-line of circuit breaker lower end between any two points is 0V, also, does not have switching voltage poor.
In the present embodiment, can select arbitrarily in the three-phase and four-line of circuit breaker lower end the output signal of any two points in A, B, C and the neutral line as circuit breaker output signal and reference signal, this not to be limited.Preferably, breaker signal is arbitrary measuring-signal of going up mutually in three-phase in the three-phase and four-line of reclosing circuit breaker lower end, and reference signal is preferably the measuring-signal on the neutral line in the three-phase and four-line of reclosing circuit breaker lower end.
Circuit breaker output signal and reference signal enter above-mentioned reclosing circuit-breaker switching on-off judgement signal generator part by the first resistor R1 and the second resistor R2, and wherein, R1 and R2 are for carrying out dividing potential drop to the ac voltage signal of input.
AC signal after dividing potential drop is delivered after interchange-DC converting of current circuit U1 by direct current, is converted into d. c. voltage signal.
In the present embodiment, direct current is delivered current circuit U1 can turn DC circuit for any type of interchange, for example, half-wave rectifying circuit, full-wave rectifying circuit, three-terminal voltage-stabilizing circuit etc., preferred, use full-wave rectifying circuit to deliver current circuit U1 as above-mentioned direct current.
Certainly, it will be understood by those skilled in the art that direct current delivers current circuit and can also adopt other any circuit of realizing interchange-DC converting, this is not limited.
By the direct voltage after U1, also can there is certain high fdrequency component to a certain extent, after capacitor C1 filtering, obtain more pure d. c. voltage signal.
Through the filtered d. c. voltage signal of capacitor C1, by after the 4th resistor R4 current limliting, enter optocoupler U2.
Wherein, the 4th resistor R4 is current-limiting resistor, for limiting the size of current that flows into optocoupler U2.
Optocoupler, is the abbreviation of optical coupler (Optical Coupler, OC), also claims photoisolator.Optical coupler be take light as the media transmission signal of telecommunication.It has good buffer action to input, output electrical signals.According to output type, optocoupler can be divided into: light-sensitive device output type, NPN triode output type, Darlington triode output type, logic gates output type and low conducting output type etc.
In the present embodiment, using the object of optocoupler is that high-tension d. c. voltage signal is isolated, and to reduce, has the impact of the d. c. voltage signal of higher voltage value on subsequent conditioning circuit.
Divide-shut brake judgement signal is exported by the first output of described optocoupler U2, wherein, when having voltage input signal between the first resistor R1 and the second resistor R2, the divide-shut brake judgement signal of output is low level signal, when there is no voltage input signal between the first resistor R1 and the second resistor R2, the divide-shut brake of output judgement signal is high level signal.
The utility model embodiment is by gathering the output signal of reclosing circuit breaker lower port, mode with electronics is processed this output signal, obtain the technological means of corresponding divide-shut brake judgement signal, overcome that mechanical detection causes affected by non-ideal factor larger, the technical problems such as mechanical aging is fast, the easy fault of rotating device, when making to only have when the real combined floodgate of circuit breaker or disconnecting successfully, just can produce corresponding divide-shut brake judgement signal, measurement result accuracy is high.
On the basis of technique scheme, described reclosing circuit-breaker switching on-off judgement signal generator part also comprises varistor, above-mentioned varistor first end is connected with described the first resistor first end, and varistor the second end is connected with described the second resistor first end.The benefit that increases this varistor is: prevented the destruction that in these parts, input signal moment surge high voltage causes circuit, improved the reliability and stability of whole parts.
On the basis of technique scheme, described the first capacitor is electrolytic capacitor, and wherein, the positive pole of described the first capacitor is connected with the electrode input end of described optocoupler, and the negative pole of described the first capacitor is connected with the negative input of described optocoupler.Select the benefit of electrolytic capacitor to be: the capacitance of the unit volume of electrolytic capacitor is larger than traditional capacitor, good wave filtering effect.
Fig. 2 is the structure chart of a kind of preferred implementation of the utility model the first embodiment, as shown in Figure 2, this preferred implementation is on the basis of the first embodiment, the measuring-signal that in the three-phase and four-line of breaker signal selection reclosing circuit breaker lower end, A goes up is mutually as breaker signal, and the measuring-signal on the neutral line in the three-phase and four-line of selection reclosing circuit breaker lower end is as reference signal.Between the first end of R1 and the first end of R2, connect pressure-sensitive protective resistor R5.
In this preferred implementation, it is full-wave rectifying circuit that interchange turns DC circuit U2, wherein, U2 further comprises: the first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4, the positive pole of D1, the positive pole of D4 are connected respectively with the negative input of optocoupler U2, the negative pole of D1, the positive pole of D2 are connected respectively with R1 the second end, and the negative pole of D2, the negative pole of D3 are connected respectively with R3 first end, and the positive pole of D3, the negative pole of D4 are connected respectively with R2 the second end.
In this preferred implementation, the first capacitor C1 is electrolytic capacitor, and wherein, the positive pole of C1 is connected with the electrode input end of optocoupler U2, and the negative pole of C1 is connected with the negative input of optocoupler U2.
In this preferred implementation, optocoupler U2 is NPN triode output type optocoupler, wherein, and the first output that the collector terminal of described NPN triode is described optocoupler, the second output that the emitter terminal of described NPN triode is described optocoupler.
In this preferred implementation, the magnitude of voltage of DC power supply Vcc is+5V.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, to those skilled in the art, the utility model can have various changes and variation.All any modifications of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model within spirit of the present utility model and principle.
Claims (7)
1. a reclosing circuit-breaker switching on-off judges signal generator part, it is characterized in that, comprise: the first resistor, the second resistor, the 3rd resistor, the 4th resistor, the first capacitor, the second capacitor, interchange turns DC circuit, optocoupler and DC power supply, described the first resistor first end is connected with breaker signal output, be used for inputting circuit breaker output signal, described first resistor the second end turns DC circuit first input end and is connected with described interchange, described the second resistor first end is connected with reference signal output, for input reference signal, described second resistor the second end turns DC circuit the second input and is connected with described interchange, described interchange turns DC circuit cathode output end and is connected with described the 3rd resistor first end, described interchange turns DC circuit cathode output end, described first capacitor the second end is connected respectively with the negative input of described optocoupler, described the 3rd resistor the second end, described the first capacitor first end is connected respectively with the electrode input end of described optocoupler, the first output of described optocoupler, described the 4th resistor the second end is connected respectively with described the second capacitor first end, described the 4th resistor first end is connected with described DC power supply, the second output of described second capacitor the second end and described optocoupler is ground connection respectively, divide-shut brake judgement signal is exported by the first output of described optocoupler,
Wherein, when having switching voltage poor between described circuit breaker output signal and described reference signal, the divide-shut brake judgement signal of output is low level signal, when not having switching voltage poor between described circuit breaker output signal and described reference signal, the divide-shut brake of output judgement signal is high level signal.
2. reclosing circuit-breaker switching on-off according to claim 1 judges signal generator part, it is characterized in that, described breaker signal is arbitrary measuring-signal of going up mutually in three-phase in the three-phase and four-line of reclosing circuit breaker lower end, and described reference signal is the measuring-signal on the neutral line in the three-phase and four-line of reclosing circuit breaker lower end.
3. reclosing circuit-breaker switching on-off according to claim 1 judges signal generator part, it is characterized in that, described parts also comprise varistor, described varistor first end is connected with described the first resistor first end, and described varistor the second end is connected with described the second resistor first end.
4. reclosing circuit-breaker switching on-off according to claim 1 judges signal generator part, it is characterized in that, described interchange turns DC circuit and further comprises: the first diode, the second diode, the 3rd diode and the 4th diode, the positive pole of described the first diode, the 4th positive pole of diode and the negative input of described optocoupler are connected respectively, the negative pole of described the first diode, the positive pole of described the second diode is connected respectively with described first resistor the second end, the negative pole of described the second diode, the negative pole of described the 3rd diode is connected respectively with described the 3rd resistor first end, the positive pole of described the 3rd diode, the negative pole of the 4th diode is connected respectively with described second resistor the second end.
5. reclosing circuit-breaker switching on-off according to claim 1 judges signal generator part, it is characterized in that, described the first capacitor is electrolytic capacitor, wherein, the positive pole of described the first capacitor is connected with the electrode input end of described optocoupler, and the negative pole of described the first capacitor is connected with the negative input of described optocoupler.
6. reclosing circuit-breaker switching on-off according to claim 1 judges signal generator part, it is characterized in that, described optocoupler is NPN triode output type optocoupler, wherein, the collector terminal of described NPN triode is the first output of described optocoupler, the second output that the emitter terminal of described NPN triode is described optocoupler.
7. reclosing circuit-breaker switching on-off judgement signal generator part according to claim 1, is characterized in that, the magnitude of voltage of described DC power supply is+5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320599005.1U CN203504129U (en) | 2013-09-26 | 2013-09-26 | Component for determining breaker switching on/off signal generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320599005.1U CN203504129U (en) | 2013-09-26 | 2013-09-26 | Component for determining breaker switching on/off signal generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203504129U true CN203504129U (en) | 2014-03-26 |
Family
ID=50335074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320599005.1U Expired - Fee Related CN203504129U (en) | 2013-09-26 | 2013-09-26 | Component for determining breaker switching on/off signal generation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203504129U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120527A (en) * | 2017-07-07 | 2017-09-01 | 山东特联信息科技有限公司 | Anti- short-circuit device, gas cylinder maintenance device and filling machine |
| CN114295977A (en) * | 2022-03-09 | 2022-04-08 | 广东电网有限责任公司佛山供电局 | Monitoring system for non-full-phase opening of circuit breaker and construction method thereof |
-
2013
- 2013-09-26 CN CN201320599005.1U patent/CN203504129U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120527A (en) * | 2017-07-07 | 2017-09-01 | 山东特联信息科技有限公司 | Anti- short-circuit device, gas cylinder maintenance device and filling machine |
| CN107120527B (en) * | 2017-07-07 | 2023-02-21 | 山东特联信息科技有限公司 | Prevent short circuit device, gas cylinder supervision device and add mechanism of qi |
| CN114295977A (en) * | 2022-03-09 | 2022-04-08 | 广东电网有限责任公司佛山供电局 | Monitoring system for non-full-phase opening of circuit breaker and construction method thereof |
| CN114295977B (en) * | 2022-03-09 | 2022-05-27 | 广东电网有限责任公司佛山供电局 | Monitoring system for non-full-phase opening of circuit breaker and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103516052A (en) | Power distribution equipment on-line monitoring early-warning terminal | |
| CN105207232A (en) | Intelligent phase selection control system for 12 kV permanent magnet vacuum circuit breaker | |
| CN108206517A (en) | A kind of low cost inputs anti-overvoltage crowbar | |
| CN205691654U (en) | A kind of synchronization signal detection circuit | |
| CN103166176B (en) | Under-voltage protection tripper for low-voltage circuit breaker | |
| CN203504129U (en) | Component for determining breaker switching on/off signal generation | |
| CN202978426U (en) | Fault detection terminal based on power distribution automation | |
| CN103474948A (en) | Component, device and method for determining breaker switching on-off signal generation | |
| CN104377647A (en) | Electric leakage protection circuit | |
| CN204205560U (en) | leakage protection circuit | |
| CN215067021U (en) | Automatic test system of power frequency noise immunity | |
| CN104577954B (en) | Transformer short-circuit protects circuit | |
| CN108696111A (en) | A kind of multiple-channel output is under-voltage and short-circuit protection circuit | |
| CN210123943U (en) | Alternating current channeling fault isolation module of direct current system of transformer substation | |
| CN204706873U (en) | A kind of overvoltage protective device for current transformer secondary side with detection control apparatus | |
| CN204167890U (en) | A kind of single-phase transformer inrush current suppression apparatus | |
| CN208675104U (en) | A kind of multiple-channel output is under-voltage and short-circuit protection circuit | |
| CN202770951U (en) | Remote signal acquisition circuit with direct current grounding automatic line selection function | |
| CN208548708U (en) | A kind of over under-voltage protection circuit | |
| CN203562840U (en) | Power distribution equipment on-line monitoring early-warning terminal | |
| CN201985508U (en) | Zero line break protector and connecting structure thereof | |
| CN208028564U (en) | Earth leakage protective device with over-voltage protection function | |
| CN205283108U (en) | Be suitable for interior generating line main protection equipment of well low -voltage switchgear of multiple method of operation | |
| CN216312681U (en) | Harmonic elimination device for low-current neutral point grounding grid system | |
| CN204205964U (en) | A kind of power supply change-over device of audio-frequency power amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20210926 |