CN204559240U - Control device of circuit breaker and breaker apparatus - Google Patents
Control device of circuit breaker and breaker apparatus Download PDFInfo
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- CN204559240U CN204559240U CN201520256590.4U CN201520256590U CN204559240U CN 204559240 U CN204559240 U CN 204559240U CN 201520256590 U CN201520256590 U CN 201520256590U CN 204559240 U CN204559240 U CN 204559240U
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- circuit breaker
- comparison means
- breaker
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- Y02B70/3266—
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model relates to a kind of control device of circuit breaker and breaker apparatus, and checkout gear is monitored the monitored loop residing for circuit breaker, obtains detection signal and is sent to comparison means.Comparison means exports sub-gate signal to drive unit when detection signal meets default separating brake condition, and exports switching signal when detection signal meets default combined floodgate condition to drive unit.Drive unit controls breaker open operation after receiving sub-gate signal, after receiving switching signal, control breaker closing.Control breaker open operation when detection signal meets separating brake condition, monitored loop is disconnected, avoids the electric equipment in monitored loop to damage, improve fail safe.Control circuit breaker again to close a floodgate when detection signal meets combined floodgate condition, make monitored loop recover normal work.
Description
Technical field
The utility model relates to electric power network technical field, particularly relates to a kind of control device of circuit breaker and breaker apparatus.
Background technology
Circuit breaker can be used to distribute electric energy, carries out protection to power circuit and motor etc., can automatic shutdown circuit when there is serious overload or short circuit and the fault such as under-voltage in loop.Circuit breaker obtains a wide range of applications in power supply field of power transmission.
Traditional circuit breaker is after the abnormal conditions such as short circuit or open circuit appear in residing loop, carries out sub-switching operation and loop is disconnected, and avoids the electric equipment in loop to damage.Because the switch deciliter time of circuit breaker is all more than a few tens of milliseconds, fast deciliter, the person and electric equipment cannot be suffered damage, there is the shortcoming that fail safe is low when electrical network produces fault.
Utility model content
Based on this, be necessary for the problems referred to above, the control device of circuit breaker providing a kind of fail safe high and breaker apparatus.
A kind of control device of circuit breaker, comprise checkout gear, comparison means and drive unit, the monitored loop residing for described checkout gear connecting breaker, described comparison means connects described checkout gear and drive unit, and described drive unit connects described circuit breaker;
Described checkout gear is monitored described monitored loop, obtains detection signal and is sent to described comparison means; Described comparison means exports sub-gate signal or switching signal extremely described drive unit; Described drive unit controls described breaker open operation after receiving described sub-gate signal, after receiving described switching signal, control described breaker closing.
A kind of breaker apparatus, comprise circuit breaker and above-mentioned control device of circuit breaker, described checkout gear connects the monitored loop residing for described circuit breaker, and described drive unit connects described circuit breaker.
Above-mentioned control device of circuit breaker and breaker apparatus, checkout gear is monitored the monitored loop residing for circuit breaker, obtains detection signal and is sent to comparison means.Comparison means exports sub-gate signal to drive unit when detection signal meets default separating brake condition, and exports switching signal when detection signal meets default combined floodgate condition to drive unit.Drive unit controls breaker open operation after receiving sub-gate signal, after receiving switching signal, control breaker closing.Control breaker open operation when detection signal meets separating brake condition, monitored loop is disconnected, avoids the electric equipment in monitored loop to damage, improve fail safe.Control circuit breaker again to close a floodgate when detection signal meets combined floodgate condition, make monitored loop recover normal work.
Accompanying drawing explanation
Fig. 1 is the structure chart of control device of circuit breaker in an embodiment;
Fig. 2 is the structure chart of drive unit in an embodiment;
Fig. 3 is the structure chart of control device of circuit breaker in another embodiment.
Embodiment
A kind of control device of circuit breaker, as shown in Figure 1, comprise checkout gear 110, comparison means 120 and drive unit 130, the monitored loop residing for checkout gear 110 connecting breaker, comparison means 120 connects checkout gear 110 and drive unit 130, drive unit 130 connecting breaker.
Checkout gear 110 is monitored monitored loop, obtains detection signal and is sent to comparison means 120; Comparison means output sub-gate signal or switching signal are to drive unit 130; Drive unit 130 controls breaker open operation after receiving sub-gate signal, after receiving switching signal, control breaker closing.In the present embodiment, checkout gear 110 optical fiber is connected with comparison means 120, improves transmission speed and the transmission stability of detection signal.
Monitored loop residing for checkout gear 110 pairs of circuit breakers is monitored, and obtains detection signal and is sent to comparison means 120.Comparison means 120 judges whether detection signal meets separating brake condition, if so, then illustrates that monitored loop exists and abnormal trend occurs, export sub-gate signal to drive unit 130, if not, then keep former detected state, do not export sub-gate signal.Drive unit 130 provides separating brake power to circuit breaker after receiving sub-gate signal, makes breaker open operation.Whether the detection signal that comparison means 120 detection simultaneously receives meets combined floodgate condition, and if so, then export switching signal to drive unit 130, drive unit 130 controls breaker closing after receiving switching signal.
Particularly, the monitored loop residing for circuit breaker can be single-phase loop, two-phase loop or three-phase loop etc., and circuit breaker is in "on" position when putting into operation.Checkout gear 110 obtains detection signal and judges whether monitored loop exists the trend that exception occurs as comparison means 120.Different with the situation of the loop exception of actual monitoring according to the structure in monitored loop, checkout gear 110 also can be different with the type of the concrete annexation in monitored loop and the detection signal of collection.Loop can comprise the situation such as short circuit exception and open circuit exception extremely.
Wherein in an embodiment, detection signal comprises voltage signal and current signal; Checkout gear 110 comprises voltage sensor and current sensor, and voltage sensor connects monitored loop and comparison means 120, carries out voltage monitoring to monitored loop, obtains voltage signal and is sent to comparison means 120; Current sensor connects monitored loop and comparison means 120, carries out current monitoring to monitored loop, obtains current signal and is sent to comparison means.Namely be adopt voltage sensor and current sensor to monitor the voltage and current in monitored loop respectively in the present embodiment, for comparison means 120, acquisition voltage signal and current signal transfer, to comparison means 120, judge whether monitored loop exists and occur abnormal trend.
Further, the quantity of voltage sensor and/or current sensor is multiple, and voltage sensor carries out voltage monitoring to the monitoring position preset in monitored loop respectively, obtains corresponding voltage signal and is sent to comparison means 120; Current sensor carries out current monitoring to the monitoring position preset in monitored loop respectively, obtains corresponding current signal and is sent to comparison means 120.The quantity of the monitoring position preset specifically can be corresponding with the quantity of voltage sensor and current sensor, in the present embodiment, the quantity of voltage sensor and current sensor is three, carry out voltage and current collection to three place's monitoring positions in monitored loop respectively, the voltage signal and the current signal that obtain three place's monitoring positions are sent to comparison means 120.
By arranging multiple voltage sensor and current sensor is monitored monitored loop, guarantee the comprehensive of data acquisition, comparison means 120 judge monitored loop whether exist there is abnormal trend time, can judgment accuracy be improved.
Comparison means 120 exports sub-gate signal to drive unit 130 when detection signal meets default separating brake condition, and exports switching signal when detection signal meets default combined floodgate condition to drive unit 130.Specifically can pre-set separating brake threshold value and the combined floodgate threshold value of circuit breaker, judge whether detection signal meets separating brake conditioned disjunction combined floodgate condition for comparison means 120.Separating brake threshold value also can be different and different according to the situation of the loop exception of actual monitoring with the concrete value of combined floodgate threshold value.
Such as, comprise voltage signal and current signal for detection signal, when short circuit abnormality detection is carried out to monitored loop, short-circuit voltage threshold value and short circuit current threshold value can be set as separating brake threshold value.Comparison means 120 obtains voltage parameter and current parameters according to the signal received, and judge whether voltage parameter is less than short-circuit voltage threshold value, and judge whether current parameters is greater than short circuit current threshold value, if both all meet, detection signal meets separating brake condition, can think that detected loop exists the trend be short-circuited.And when open circuit abnormality detection is carried out to monitoring circuit, open circuit voltage threshold value and breaking current threshold value can be set as separating brake threshold value.Comparison means 120 obtains voltage parameter and current parameters according to the signal received, and judge whether voltage parameter is greater than open circuit voltage threshold value, and judge whether current parameters is less than breaking current threshold value, if both all meet, detection signal meets separating brake condition, can think that detected loop exists the trend that open circuit occurs.By arranging combined floodgate threshold decision detection signal, whether to meet the principle of combined floodgate condition similar, repeats no more.
Be appreciated that, if the multiple monitoring positions of checkout gear 110 to monitored loop are monitored, then may correspond to default multiple separating brake threshold value and combined floodgate threshold value, judge whether the detection signal of each monitoring position meets separating brake conditioned disjunction combined floodgate condition respectively, when the detection signal that each monitoring position obtains all meets separating brake condition, comparison means 120 exports sub-gate signal to drive unit 130, when the detection signal that each monitoring position obtains all meets combined floodgate condition, comparison means 120 exports switching signal to drive unit 130.
Wherein in an embodiment, comparison means 120 comprises the signal processor connecting checkout gear 110 and drive unit 130.In the present embodiment, signal processor adopts TMS320F28335 type signal processor, has that precision is high, cost is low, power consumption is little, performance is high, peripheral hardware integrated level is high, data and program memory space is large, A/D conversion is more accurately fast advantage.
After signal processor receives detection signal, analog-to-digital conversion is carried out to detection signal and obtains detecting data.Voltage signal and current signal is comprised equally for detection signal, signal processor carries out analog-to-digital conversion to detection signal and obtains voltage parameter and current parameters, thus judges whether detection signal meets separating brake conditioned disjunction combined floodgate condition according to voltage parameter and current parameters.Signal processor exports sub-gate signal to drive unit 130 when detection signal meets separating brake condition, export switching signal to drive unit 130 when detection signal meets combined floodgate condition.
Be appreciated that signal processor judges whether detection signal meets separating brake conditioned disjunction combined floodgate condition, and export corresponding signal when satisfying condition to drive unit 130, more conventional technological means can be adopted realize.In addition, in other embodiments, also the comparison circuit be made up of operational amplifier can be adopted to replace signal processor, such as the particular type in monitored loop, short-circuit voltage threshold value and short circuit current threshold value is determined by arranging the pin of operational amplifier, access detection signal and short-circuit voltage threshold value and short circuit current threshold value and compare judgement, to judge whether detection signal meets separating brake condition, thus determine whether detected loop exists the trend be short-circuited.
Wherein in an embodiment, after comparison means 120 judges that detection signal meets separating brake conditioned disjunction combined floodgate condition, also judge whether the detection signal received in preset time period meets separating brake conditioned disjunction combined floodgate condition, if so, then export sub-gate signal or switching signal to drive unit 130.Judge in the present embodiment whether the detection signal received in preset time period still meets separating brake conditioned disjunction combined floodgate condition, avoids the transient-upset in monitored loop to cause interference to separating brake and closing operation, improve precise control.
Wherein in an embodiment, as shown in Figure 2, drive unit 130 comprises energy-storage travelling wave tube 132 and gate circuit 134, and gate circuit 134 connects energy-storage travelling wave tube 132, comparison means 120 and circuit breaker.Gate circuit 134 is after receiving sub-gate signal, and the Energy transfer stored by energy-storage travelling wave tube 132, to circuit breaker, controls breaker open operation; Gate circuit 134 is after receiving switching signal, and the Energy transfer stored by energy-storage travelling wave tube 132, to circuit breaker, controls breaker closing.
Particularly, gate circuit 134 after receiving sub-gate signal, the Energy transfer that energy-storage travelling wave tube 132 is stored in the separating brake control loop of circuit breaker, for breaker open operation provides energy.Gate circuit 134 after receiving switching signal, the Energy transfer that energy-storage travelling wave tube 132 is stored in the shutting-brake control loop of circuit breaker, for breaker closing provides energy.
Wherein in an embodiment, continue with reference to Fig. 2, drive unit 130 also comprises voltage stabilizing circuit 136, and energy-storage travelling wave tube 132 is connected by voltage stabilizing circuit 136 AND circuit 134.Export circuit breaker to by gate circuit 134 after the energy that energy-storage travelling wave tube 132 stores carries out voltage stabilizing process by voltage stabilizing circuit 136, ensure circuit breaker to provide enough energy to carry out separating brake or closing operation, improve operating reliability.
In addition, drive unit 130 also can comprise the power supply connecting energy-storage travelling wave tube 132 and gate circuit 134, and gate circuit 134 is not when receiving the signal that comparison means 120 sends, and controlling power supply is that energy-storage travelling wave tube 132 is powered.Gate circuit 134, after receiving the signal that comparison means 120 sends, controls power supply and stops powering for energy-storage travelling wave tube 132, and sends energy that energy-storage travelling wave tube 132 stores to circuit breaker, closes a floodgate or the energy of separating brake for circuit breaker provides.After terminating for circuit breaker energy supply, gate circuit 134 controls power supply and continues as energy-storage travelling wave tube 132 and power, until receive the signal that comparison means 120 sends next time.Controlling power supply by gate circuit 134 is that energy-storage travelling wave tube 132 charges, and guarantees that energy-storage travelling wave tube 132 has enough Energy Transfers to circuit breaker, improves operating reliability.
Above-mentioned control device of circuit breaker, controls breaker open operation when detection signal meets separating brake condition, monitored loop is disconnected, avoids the electric equipment in monitored loop to damage, improve fail safe.Control circuit breaker again to close a floodgate when detection signal meets combined floodgate condition, make monitored loop recover normal work.
Wherein in an embodiment, as shown in Figure 3, control device of circuit breaker also comprises the warning device 140 connecting comparison means 120, and warning device 140 is output alarm information when comparison means 120 exports sub-gate signal.The concrete structure of warning device 140 and type of alarm are not unique, such as, by alarm lamp luminous alarm, by loud speaker sounding alarm, or are reported to the police by the information such as picture, word that display screen display is preset.When comparison means 120 exports sub-gate signal, by warning device 140 output alarm information, make staff know the trend existing in monitored loop and exception occurs in time, so that staff overhauls, improve grid stability.
The utility model additionally provides a kind of breaker apparatus, comprises circuit breaker and above-mentioned control device of circuit breaker, the monitored loop residing for checkout gear connecting breaker, drive unit connecting breaker.
In an embodiment, circuit breaker is vacuum circuit-breaker wherein, and volume is little, lightweight and be applicable to frequent operation, improves operation ease.In the present embodiment, vacuum circuit-breaker adopts Fast Speed Vacuum Circuit Breaker, can complete whole mechanical actions of separating brake, complete whole mechanical actions of combined floodgate, carry out separating brake and closing operation in time in 12 milliseconds in 5 milliseconds, improves electric network security.
Above-mentioned breaker apparatus, controls breaker open operation when detection signal meets separating brake condition, monitored loop is disconnected, avoids the electric equipment in monitored loop to damage, improve fail safe.Control circuit breaker again to close a floodgate when detection signal meets combined floodgate condition, make monitored loop recover normal work.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (10)
1. a control device of circuit breaker, it is characterized in that, comprise checkout gear, comparison means and drive unit, the monitored loop residing for described checkout gear connecting breaker, described comparison means connects described checkout gear and drive unit, and described drive unit connects described circuit breaker;
Described checkout gear is monitored described monitored loop, obtains detection signal and is sent to described comparison means; Described comparison means exports sub-gate signal or switching signal extremely described drive unit; Described drive unit controls described breaker open operation after receiving described sub-gate signal, after receiving described switching signal, control described breaker closing.
2. control device of circuit breaker according to claim 1, is characterized in that, described detection signal comprises voltage signal and current signal; Described checkout gear comprises voltage sensor and current sensor,
Described voltage sensor connects described monitored loop and comparison means, carries out voltage monitoring, obtain described voltage signal and be sent to described comparison means described monitored loop;
Described current sensor connects described monitored loop and comparison means, carries out current monitoring, obtain described current signal and be sent to described comparison means described monitored loop.
3. control device of circuit breaker according to claim 2, is characterized in that, the quantity of described voltage sensor and/or current sensor is multiple,
Described voltage sensor carries out voltage monitoring to the monitoring position preset in described monitored loop respectively, obtains corresponding voltage signal and is sent to described comparison means;
Described current sensor carries out current monitoring to the monitoring position preset in described monitored loop respectively, obtains corresponding current signal and is sent to described comparison means.
4. control device of circuit breaker according to claim 1, is characterized in that, described comparison means comprises the signal processor connecting described checkout gear and drive unit.
5. control device of circuit breaker according to claim 1, is characterized in that, described drive unit comprises energy-storage travelling wave tube and gate circuit, and described gate circuit connects described energy-storage travelling wave tube, comparison means and circuit breaker;
Described gate circuit is after receiving described sub-gate signal, and the Energy transfer stored by described energy-storage travelling wave tube, to described circuit breaker, controls described breaker open operation; Described gate circuit is after receiving described switching signal, and the Energy transfer stored by described energy-storage travelling wave tube, to described circuit breaker, controls described breaker closing.
6. control device of circuit breaker according to claim 5, is characterized in that, described drive unit also comprises voltage stabilizing circuit, and described energy-storage travelling wave tube is connected with described gate circuit by described voltage stabilizing circuit.
7. control device of circuit breaker according to claim 1, is characterized in that, also comprises the warning device connecting described comparison means, and described warning device is output alarm information when described comparison means exports sub-gate signal.
8. the control device of circuit breaker according to claim 1-7 any one, is characterized in that, described checkout gear is connected with described comparison means by optical fiber.
9. a breaker apparatus, is characterized in that, comprises circuit breaker and the control device of circuit breaker described in claim 1-8 any one, and described checkout gear connects the monitored loop residing for described circuit breaker, and described drive unit connects described circuit breaker.
10. breaker apparatus according to claim 9, it is characterized in that, described circuit breaker is vacuum circuit-breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520256590.4U CN204559240U (en) | 2015-04-24 | 2015-04-24 | Control device of circuit breaker and breaker apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520256590.4U CN204559240U (en) | 2015-04-24 | 2015-04-24 | Control device of circuit breaker and breaker apparatus |
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| CN204559240U true CN204559240U (en) | 2015-08-12 |
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| CN201520256590.4U Active CN204559240U (en) | 2015-04-24 | 2015-04-24 | Control device of circuit breaker and breaker apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807162A (en) * | 2016-03-25 | 2016-07-27 | 神华集团有限责任公司 | Action monitoring circuit for secondary circuits in electrical system and terminal strip |
| CN110416969A (en) * | 2019-07-04 | 2019-11-05 | 天津市中力神盾电子科技有限公司 | Method and system for controlling composite switch of distribution box |
| CN112505535A (en) * | 2020-11-10 | 2021-03-16 | 广西电网有限责任公司南宁供电局 | Circuit breaker opening and closing characteristic testing method and system |
| CN113282029A (en) * | 2021-05-06 | 2021-08-20 | 中国南方电网有限责任公司超高压输电公司南宁局 | Control method and device of circuit breaker, computer equipment and storage medium |
-
2015
- 2015-04-24 CN CN201520256590.4U patent/CN204559240U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105807162A (en) * | 2016-03-25 | 2016-07-27 | 神华集团有限责任公司 | Action monitoring circuit for secondary circuits in electrical system and terminal strip |
| CN110416969A (en) * | 2019-07-04 | 2019-11-05 | 天津市中力神盾电子科技有限公司 | Method and system for controlling composite switch of distribution box |
| CN112505535A (en) * | 2020-11-10 | 2021-03-16 | 广西电网有限责任公司南宁供电局 | Circuit breaker opening and closing characteristic testing method and system |
| CN113282029A (en) * | 2021-05-06 | 2021-08-20 | 中国南方电网有限责任公司超高压输电公司南宁局 | Control method and device of circuit breaker, computer equipment and storage medium |
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