CN204287418U - A kind of circuit breaker switch state pick-up unit - Google Patents
A kind of circuit breaker switch state pick-up unit Download PDFInfo
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- CN204287418U CN204287418U CN201420771349.0U CN201420771349U CN204287418U CN 204287418 U CN204287418 U CN 204287418U CN 201420771349 U CN201420771349 U CN 201420771349U CN 204287418 U CN204287418 U CN 204287418U
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Abstract
The utility model discloses a kind of circuit breaker switch state pick-up unit, comprise circuit-breaker status testing circuit, this circuit-breaker status testing circuit input end is electrically connected with isolating switch output terminal live wire and isolating switch input end zero line respectively; Single-chip microcomputer, this single-chip microcomputer is electrically connected with the output terminal of circuit-breaker status testing circuit; Output circuit, this output circuit is electrically connected with single-chip microcomputer; For exporting the power circuit of 5V voltage, the input end of this power circuit is electrically connected with isolating switch input end live wire and isolating switch input end zero line respectively; The 5V voltage that power circuit exports is respectively single-chip microcomputer, output circuit and circuit-breaker status testing circuit and powers.Circuit-breaker status testing circuit of the present utility model can detect the on off state of isolating switch in real time, the state value of single-chip microcomputer timing acquiring circuit-breaker status testing circuit simultaneously, the on off operating mode of isolating switch is exported finally by output circuit, thus reach the object of monitoring isolating switch in real time, and detection speed of the present utility model is fast, efficiency is high and expense is low.
Description
Technical field
The utility model relates to power system measuring technical field, particularly relates to a kind of circuit breaker switch state pick-up unit.
Background technology
Electrical Safety is the important component part of safety in production, and isolating switch is as the switchgear of isolated electricity consumption, except ensureing the normal work of consumer, also has the effect of the safety of guarantee equipment and personnel.So whether isolating switch can the effectively conducting of executive circuit and open circuit, whether can become the effective guarantee of Electrical Safety, just need to carry out real-time monitoring to its on off state.But isolating switch is numerous in power supply system, and numerous isolating switch scattering device, be then unfavorable for numerous isolating switch Centralized Monitoring.In the face of the isolating switch of scattering device, be mostly to detect separately the on off state of each isolating switch at present; And detection mode is, be use multimeter or test pencil to carry out on-site manual to detect mostly, the efficiency of this detection mode is very low, and expense is also high.And testing result also cannot be transferred to electric power system, the analysis of whole electric power system can not be used for.
Utility model content
The purpose of this utility model is to provide a kind of circuit breaker switch state pick-up unit, the state of the supervision isolating switch that this pick-up unit can be real-time, and testing process is carried out automatically, thus improves the efficiency of detection, reduces expense.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of circuit breaker switch state pick-up unit comprises circuit-breaker status testing circuit, and described circuit-breaker status testing circuit input end is electrically connected with isolating switch output terminal live wire and isolating switch input end zero line respectively; Single-chip microcomputer, described single-chip microcomputer is electrically connected with the output terminal of described circuit-breaker status testing circuit; For exporting the output circuit of isolating switch on off operating mode, described output circuit is electrically connected with described single-chip microcomputer; For exporting the power circuit of 5V voltage, the input end of described power circuit is electrically connected with isolating switch input end live wire and described isolating switch input end zero line respectively; The 5V voltage that described power circuit exports is respectively described single-chip microcomputer, described output circuit and described circuit-breaker status testing circuit and powers.
Optimal way is, described output circuit comprises RS485 interface circuit, and described RS485 interface circuit communicates with remote electric power system.
Optimal way is, described output circuit also comprises indicator light circuit.
Optimal way is, described circuit-breaker status testing circuit comprises photoelectrical coupler, the input end of described photoelectrical coupler and a diode D1 also connect, the negative pole of described diode D1 is electrically connected with described isolating switch output terminal live wire, and the positive pole of described diode D1 is electrically connected with described isolating switch input end zero line through resistance R1; The output terminal of described photoelectrical coupler and electric capacity C1 also connect, one end ground connection of described electric capacity C1, the other end of described electric capacity C1 is as the output terminal of described circuit-breaker status testing circuit, and the other end of described electric capacity C1 is also electrically connected with the 5V voltage that described power circuit exports through resistance R2.
After adopting technique scheme, the beneficial effects of the utility model are: because circuit breaker switch state pick-up unit of the present utility model comprises circuit-breaker status testing circuit, this circuit-breaker status testing circuit and isolating switch also connect, and are judged the on off operating mode of isolating switch by the voltage gathered between the output live wire of isolating switch and input zero line.The output terminal of single-chip microcomputer timing acquiring circuit-breaker status testing circuit of the present utility model simultaneously, the state value that namely timing acquisition isolating switch on off operating mode is corresponding.Single-chip microcomputer is exported after state value process by output circuit.Therefore the state of the supervision isolating switch that the utility model can be real-time, and testing process is carried out automatically, thus improve the efficiency of detection, reduce expense.Power circuit of the present utility model is power taking in electric power system simultaneously, powers, make the utility model be used in scene very easily after changing into the utility model.
Because output circuit comprises RS485 interface circuit, this RS485 interface circuit communicates with remote electric power system, and this structure enables the utility model that the on off operating mode value of isolating switch is transferred to remote electric power system, provides foundation for analyzing electric power system fault.
Because output circuit also comprises indicator light circuit; The on off operating mode of isolating switch can show by this pilot lamp intuitively, is convenient to the monitoring of isolating switch.
In sum, circuit-breaker status testing circuit of the present utility model can gather its on off operating mode value automatically, and by after the process of single-chip microcomputer timing acquiring, is transmitted by output circuit; Therefore the state of the supervision isolating switch that utility model can be real-time, and testing process is carried out automatically, thus improve the efficiency of detection, reduce expense.
Accompanying drawing explanation
Fig. 1 is the theory diagram of circuit breaker switch state pick-up unit of the present utility model;
Fig. 2 is the circuit diagram of the circuit-breaker status testing circuit in Fig. 1;
Fig. 3 is the theory diagram of the circuit breaker switch state pick-up unit of embodiment;
In figure: 1-photoelectrical coupler first pin, 2-photoelectrical coupler second pin, 3-photoelectrical coupler three-prong, 4-photoelectrical coupler the 4th pin, 6-isolating switch, Lin-isolating switch input live wire, Lout-isolating switch export live wire, N-isolating switch input zero line, U1-photoelectrical coupler.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of circuit breaker switch state pick-up unit comprises the circuit-breaker status testing circuit be electrically connected with isolating switch 6, the output terminal of this circuit-breaker status testing circuit is electrically connected with the input end of single-chip microcomputer, wherein single-chip microcomputer is electrically connected with output circuit, this output circuit comprises indicator light circuit and RS485 interface circuit, single-chip microcomputer is also electrically connected with providing the power circuit of 5V voltage simultaneously, power circuit is also electrically connected with circuit-breaker status testing circuit, and power circuit is also electrically connected with output circuit.
Circuit-breaker status testing circuit of the present utility model can detect the on off operating mode of isolating switch 6 in real time, after the state value that this on off operating mode is corresponding is obtained by single-chip microcomputer collection, again the state value of corresponding isolating switch 6 on off operating mode is exported by output circuit after single-chip microcomputer process.The power circuit of the present embodiment is from the isolating switch input end live wire Lin be located at electric system and isolating switch input zero line N power taking, and then changing into stable 5V voltage is that each circuit of the present utility model is powered.
As shown in Figure 2, the circuit-breaker status testing circuit of the present embodiment comprises photoelectrical coupler U1, the input end of this photoelectrical coupler U1 and a diode D1 also connect, the negative pole of this diode D1 is electrically connected with isolating switch output terminal live wire Lout, and the positive pole of this diode D1 is electrically connected with isolating switch input end zero line N through resistance R1; And the output terminal of photoelectrical coupler U1 and electric capacity C1 also connect, one end ground connection of this electric capacity C1, the other end of this electric capacity C1 is electrically connected with single-chip microcomputer as the output terminal of circuit-breaker status testing circuit, and the other end of electric capacity C1 is also electrically connected with the 5V voltage that power circuit exports through resistance R2.Wherein the effect of diode D1 is protection photoelectrical coupler U1, when photoelectrical coupler first pin one and photoelectrical coupler second pin two voltage are reverse (because detection is alternating current 220V, voltage direction is alternation), diode D1 conducting, fall very little between two pins, photoelectrical coupler U1 can not be made to damage; Wherein the effect of electric capacity C1 is filter shape.
The principle of work of circuit-breaker status testing circuit is: when isolating switch 6 is in conducting state, 220V voltage is had between " isolating switch exports live wire Lout " and " isolating switch input zero line N ", this 220V voltage is after resistance R1 dividing potential drop, current limliting, photoelectrical coupler U1 is worked, i.e. photoelectrical coupler three-prong 3 and the conducting of photoelectrical coupler the 4th pin 4, the output terminal of circuit-breaker status testing circuit exports electronegative potential, after this electronegative potential is collected by single-chip microcomputer, single-chip microcomputer is using the state value of electronegative potential as identification isolating switch 6 " leading to " state.When isolating switch 6 is in off-state, no-voltage between " isolating switch exports live wire Lout " and " isolating switch input zero line N ", now photoelectrical coupler U1 does not work, i.e. photoelectrical coupler three-prong 3 and the not conducting of photoelectrical coupler the 4th pin 4; Now the output terminal current potential of circuit-breaker status testing circuit is drawn high into noble potential by resistance R2, and after this noble potential is gathered by single-chip microcomputer, single-chip microcomputer is using the state value of noble potential as identification isolating switch 6 " breaking " state.
As shown in Figure 3, the single-chip microcomputer plug-in storer of the present embodiment and data-carrier store, make its can independent operating without the need to external equipment.Because single-chip microcomputer can the output state value of timing acquiring circuit-breaker status testing circuit output terminal, thus reach the object of monitoring isolating switch 6 on off operating mode in real time.After single-chip microcomputer collects state value corresponding to the on off operating mode of isolating switch 6 in addition, indicator light circuit display after state value process, will be transferred to.
Be specially: indicator light circuit comprises the resistance and light emitting diode that are serially connected, and wherein one end of resistance is electrically connected with single-chip microcomputer, and light emitting diode connects 5V voltage.When single-chip microcomputer collects " leading to " state value of isolating switch 6, single-chip microcomputer applies electronegative potential to the resistance be connected electrically, and light emitting diode is lit; When otherwise single-chip microcomputer collects " breaking " state value of isolating switch 6, single-chip microcomputer applies noble potential to the resistance be connected electrically, light emitting diode is ended be not lit (going out), thus the light on and off being reached through light emitting diode intuitively indicate the object of isolating switch 6 on off operating mode.
After simultaneously single-chip microcomputer collects state value corresponding to the on off operating mode of isolating switch 6, being transferred to remote electric power system by after state value process by 485 interface circuits, providing foundation for analyzing electric power system fault.485 interface circuits are made up of 485 interface chips, resistance and electric capacity.
The input end of the power circuit of the present embodiment inputs zero line N with isolating switch input end live wire Lin and isolating switch respectively and is electrically connected, by the electric place in circuit of electric power system.Access 220V alternating current after isolating transformer isolated buck, rectifier bridge rectification, capacitor filtering, the 5V voltage of the output terminal stable output of power circuit.This 5V voltage by electrical connection for the utility model entirety provides power supply.
When the utility model being used in certain isolating switch 6 in supply line, two of this device input ends are exported live wire Lout with isolating switch respectively and isolating switch inputs zero line N wiring.The input end of power circuit is inputted live wire Lin with isolating switch respectively and isolating switch inputs zero line N wiring.485 interface circuits are connected with remote electric power system by 485 data lines.After completing above-mentioned connection, this pick-up unit starts to monitor this isolating switch 6, and when the state value of the output terminal collection from circuit-breaker status testing circuit of single-chip microcomputer is low level, single-chip microcomputer identifies now isolating switch 6 and is in normally state.Single-chip microcomputer is by this State-output of acquisition to indicator light circuit simultaneously, and now pilot lamp is lit; Synchronous single-chip microcomputer by obtain circuit-breaker status information transmission to remote electric power system.When single-chip microcomputer is high level from the state value of the output terminal collection of circuit-breaker status testing circuit, single-chip microcomputer identifies now isolating switch 6 and is in abnormal off-state.Single-chip microcomputer is by this State-output of acquisition to indicator light circuit simultaneously, and now pilot lamp is not lighted (going out); Synchronous single-chip microcomputer by obtain circuit-breaker status information transmission to remote electric power system.Staff is made to learn the particular location that the fault of isolating switch disconnects, information of concrete time etc.
From the above, the utility model operates without the need to personnel on site, efficiency is high, expense is low, can also realize the function that self-timing detects and state is uploaded simultaneously.Use of the present utility model with strong points, can detect in real time, after state-detection, real time remote is reported to supervisory system, provides foundation for analyzing electric power system fault.
The above preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, etc. the improvement etc. of same circuit breaker switch state structure of the detecting device, all should be included within protection domain of the present utility model.
Claims (4)
1. a circuit breaker switch state pick-up unit, is characterized in that, comprises
Circuit-breaker status testing circuit, described circuit-breaker status testing circuit input end is electrically connected with isolating switch output terminal live wire and isolating switch input end zero line respectively;
Single-chip microcomputer, described single-chip microcomputer is electrically connected with the output terminal of described circuit-breaker status testing circuit;
For exporting the output circuit of isolating switch on off operating mode value, described output circuit is electrically connected with described single-chip microcomputer;
For exporting the power circuit of 5V voltage, the input end of described power circuit is electrically connected with isolating switch input end live wire and described isolating switch input end zero line respectively; The 5V voltage that described power circuit exports is respectively described single-chip microcomputer, described output circuit and described circuit-breaker status testing circuit and powers.
2. circuit breaker switch state pick-up unit according to claim 1, is characterized in that, described output circuit comprises RS485 interface circuit, and described RS485 interface circuit communicates with remote electric power system.
3. circuit breaker switch state pick-up unit according to claim 1 and 2, is characterized in that, described output circuit also comprises indicator light circuit.
4. circuit breaker switch state pick-up unit according to claim 3, it is characterized in that, described circuit-breaker status testing circuit comprises photoelectrical coupler, the input end of described photoelectrical coupler and a diode D1 also connect, the negative pole of described diode D1 is electrically connected with described isolating switch output terminal live wire, and the positive pole of described diode D1 is electrically connected with described isolating switch input end zero line through resistance R1; The output terminal of described photoelectrical coupler and electric capacity C1 also connect, one end ground connection of described electric capacity C1, the other end of described electric capacity C1 is as the output terminal of described circuit-breaker status testing circuit, and the other end of described electric capacity C1 is also electrically connected with the 5V voltage that described power circuit exports through resistance R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420771349.0U CN204287418U (en) | 2014-12-09 | 2014-12-09 | A kind of circuit breaker switch state pick-up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420771349.0U CN204287418U (en) | 2014-12-09 | 2014-12-09 | A kind of circuit breaker switch state pick-up unit |
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| CN204287418U true CN204287418U (en) | 2015-04-22 |
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| CN201420771349.0U Active CN204287418U (en) | 2014-12-09 | 2014-12-09 | A kind of circuit breaker switch state pick-up unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388416A (en) * | 2015-11-16 | 2016-03-09 | 国家电网公司 | Intelligent substation relay protection remote test system |
| CN106338942A (en) * | 2016-09-20 | 2017-01-18 | 北京龙鼎源科技股份有限公司 | Switch quantity acquisition circuit |
| CN111613489A (en) * | 2020-05-29 | 2020-09-01 | 苏州未来电器股份有限公司 | Circuit breaker capable of being remotely controlled |
| CN112034280A (en) * | 2020-07-23 | 2020-12-04 | 郑州地铁集团有限公司运营分公司 | Portable platform door system multichannel detection switch testing arrangement |
-
2014
- 2014-12-09 CN CN201420771349.0U patent/CN204287418U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388416A (en) * | 2015-11-16 | 2016-03-09 | 国家电网公司 | Intelligent substation relay protection remote test system |
| CN106338942A (en) * | 2016-09-20 | 2017-01-18 | 北京龙鼎源科技股份有限公司 | Switch quantity acquisition circuit |
| CN111613489A (en) * | 2020-05-29 | 2020-09-01 | 苏州未来电器股份有限公司 | Circuit breaker capable of being remotely controlled |
| CN111613489B (en) * | 2020-05-29 | 2022-11-01 | 苏州未来电器股份有限公司 | Circuit breaker capable of being remotely controlled |
| CN112034280A (en) * | 2020-07-23 | 2020-12-04 | 郑州地铁集团有限公司运营分公司 | Portable platform door system multichannel detection switch testing arrangement |
| CN112034280B (en) * | 2020-07-23 | 2023-08-08 | 郑州地铁集团有限公司运营分公司 | Portable platform door system multiplex detection switch testing arrangement |
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