CN104656011A - Circuit and system for monitoring - Google Patents
Circuit and system for monitoring Download PDFInfo
- Publication number
- CN104656011A CN104656011A CN201310583357.2A CN201310583357A CN104656011A CN 104656011 A CN104656011 A CN 104656011A CN 201310583357 A CN201310583357 A CN 201310583357A CN 104656011 A CN104656011 A CN 104656011A
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- shunt
- circuit
- current monitoring
- monitoring circuit
- control loop
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Abstract
The invention discloses a circuit and a system for monitoring. The circuit comprises a control circuit, a current monitoring circuit, and a processor. The current monitoring circuit is connected with the control circuit, and is used to acquire current signals of the control circuit. The processor is connected with the current monitoring circuit, and is used to perform fault analysis on a breaker in the control circuit according to the current signals. The circuit and the system solve problems in the prior art that whether the circuit trip is fault or automatic protection cannot be determined, and safety of the control circuit cannot be ensured. The circuit and the system realize real-time accurate recording and can reflect operation conditions of the breaker in real time.
Description
Technical field
The present invention relates to field of circuit control, in particular to a kind of observation circuit and system.
Background technology
At present, not to breaker control circuit whether correct operation monitoring means in prior art, often occur isolating switch unknown cause breaking, subsequent analysis difficulty, the analysis of causes thoroughly do not put in place.To avoiding the abnormal methods taked of similar accident can not provide first-hand foundation, be unfavorable for the safety in production of electrical network.
Electrical network is subject to extraneous various factors affects frequent unknown cause breaking; part situation can effecting reaction failure condition from protection and automated information; small part situation is when isolating switch abnormal failure; owing to lacking control loop whether correct operation Monitoring Design and method; be difficult to the breaking distinguished isolating switch or protect aut.eq. reason to cause; the situation that subsequent analysis difficulty, the analysis of causes thoroughly do not put in place often occurs, and causes a lot of doubt to production technology personnel.
Cannot be fault or automatically protect by decision circuitry breaking in prior art, thus the problem of control loop safety cannot be ensured, not yet propose effective solution at present.
Summary of the invention
Cannot be fault or automatically protect by decision circuitry breaking for correlation technique; thus the problem of control loop safety cannot be ensured, at present effective solution is not yet proposed, for this reason; fundamental purpose of the present invention is to provide a kind of observation circuit and system, to solve the problem.
To achieve these goals, according to a further aspect in the invention, provide a kind of observation circuit, this circuit comprises: control loop; Current monitoring circuit, is connected with control loop, for obtaining the current signal of control loop; Processor, is connected with current monitoring circuit, for carrying out fault analysis according to current signal to the isolating switch in control loop.
Further, processor comprises: comparer, is connected with current monitoring circuit, for the size according to current signal and predetermined threshold value, determines whether isolating switch exists fault.
Further, control loop comprises close a floodgate shunt and separating brake shunt, and current signal comprises switching signal and sub-gate signal, and wherein, current monitoring circuit comprises: the first current monitoring circuit, is connected, for obtaining switching signal along separate routes with combined floodgate; Second current monitoring circuit, is connected, for obtaining sub-gate signal along separate routes with separating brake.
Further, the first current monitoring circuit comprises the first shunt, closes a floodgate and comprises along separate routes: first controls hand handle, and first end is connected with power supply, and the second end is connected with the first end of the first shunt; The first end of the first auxiliary switch of isolating switch is connected with the second end of the first shunt; Closing coil, its first end is connected with the second end of the first auxiliary switch, and the second end is connected with power supply.
Further, the first current monitoring circuit comprises the second shunt, and close a floodgate and also comprise along separate routes: combined floodgate pilot lamp, first end is connected with the first end of the second shunt, and the second end is connected with power supply; Second end of the second shunt is connected with the first end of the first auxiliary switch.
Further, the second current monitoring circuit comprises the 3rd shunt, and separating brake comprises along separate routes: second controls hand handle, and first end is connected with power supply, and the second end is connected with the first end of the 3rd shunt; The first end of the second auxiliary switch of isolating switch is connected with the second end of the 3rd shunt; Switching winding, its first end is connected with the second end of the second auxiliary switch, and the second end is connected with power supply.
Further, the second current monitoring circuit comprises the 4th shunt, and separating brake also comprises along separate routes: separating brake pilot lamp, and first end is connected with the first end of the 4th shunt, and the second end is connected with power supply; Second end of the 4th shunt is connected with the first end of the second auxiliary switch.
Further, the first end of control loop is connected with power supply by the first fuse, and the second end of control loop is connected with power supply by the second fuse.
To achieve these goals, according to a further aspect in the invention, provide a kind of monitoring system, this system comprises: a kind of observation circuit.
Pass through the present invention, can by the current signal in current monitoring circuit Monitoring and Controlling loop, then processor carries out fault analysis according to current signal to the isolating switch in control loop, the action situation of each branch road in control loop can be distinguished by the present invention, thus become the first-hand foundation of accident abnormality analysed in depth in control loop, solve in prior art and cannot be fault or automatically protect by decision circuitry breaking, thus the problem of control loop safety cannot be ensured, achieve real-time accurate recording and reflect the action situation of isolating switch, thus can exception malfunction ratio be reduced, to ensure power network safety operation.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the observation circuit according to the embodiment of the present invention; And
Fig. 2 is the circuit diagram according to observation circuit embodiment illustrated in fig. 1.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Fig. 1 is the structural representation of the observation circuit according to the embodiment of the present invention.As shown in Figure 1, this circuit can comprise: control loop 10; Current monitoring circuit 30, is connected with control loop 10, for obtaining the current signal of control loop; Processor 50, is connected with current monitoring circuit 30, for carrying out fault analysis according to current signal to the isolating switch in control loop.
Adopt the above embodiment of the present invention, can by the current signal in current monitoring circuit Monitoring and Controlling loop, then processor carries out fault analysis according to current signal to the isolating switch in control loop, the action situation of each branch road in control loop can be distinguished by the present invention, thus become the first-hand foundation of accident abnormality analysed in depth in control loop, solve in prior art and cannot be fault or automatically protect by decision circuitry breaking, thus the problem of control loop safety cannot be ensured, achieve real-time accurate recording and reflect the action situation of isolating switch, thus can exception malfunction ratio be reduced, to ensure power network safety operation.
According to the abovementioned embodiments of the present invention, processor 50 can comprise: comparer, is connected with current monitoring circuit, for the size according to current signal and predetermined threshold value, determines whether isolating switch exists fault.
In the above embodiment of the present invention, control loop 10 can comprise close a floodgate shunt and separating brake shunt, and current signal comprises switching signal and sub-gate signal, wherein, current monitoring circuit 30 can comprise: the first current monitoring circuit, is connected, for obtaining switching signal along separate routes with combined floodgate; Second current monitoring circuit, is connected, for obtaining sub-gate signal along separate routes with separating brake.
Particularly, current monitoring circuit can be installed in protection screen, the switching signal of the first current monitoring circuit that can be obtained by processor and the sub-gate signal of the second current monitoring circuit, and the current value of two shunt is obtained according to switching signal and sub-gate signal, when being recorded in breaker actuation, the current value of each shunt, and failure wave-recording function is provided, for each position action situation of secondary circuit during analysis of failure provides foundation, can analyze judgement is isolating switch correct operation, or protection, there is the abnormal misoperation caused in aut.eq. and breaker mechanism body apparatus.
According to the abovementioned embodiments of the present invention, as shown in Figure 2, the first current monitoring circuit can comprise the first shunt FLQ1, closes a floodgate and can comprise along separate routes: first controls hand K1, and first end is connected with power supply, and the second end is connected with the first end of the first shunt FLQ1; The first end of the first auxiliary switch DL1 of isolating switch is connected with the second end of the first shunt; Closing coil HC, its first end is connected with second end of the first auxiliary switch DL1, and the second end is connected with power supply.Particularly, first controls hand is connected the first end of K1 with the positive pole of power supply, second end of closing coil HC is connected with the negative pole of power supply.
Wherein, second end of the first shunt FLQ1 can be not shown by switch TBJ() be connected with the first end of the first auxiliary switch DL1.
According to the abovementioned embodiments of the present invention, the first current monitoring circuit can comprise the second shunt FLQ2, and close a floodgate and can also comprise along separate routes: combined floodgate pilot lamp L1, first end is connected with the first end of the second shunt, and the second end is connected with power supply; Second end of the second shunt FLQ2 is connected with the first end of the first auxiliary switch DL1.
In the above embodiment of the present invention, the second current monitoring circuit can comprise the 3rd shunt FLQ3, and separating brake can comprise along separate routes: second controls hand K2, and first end is connected with power supply, and the second end is connected with the first end of the 3rd shunt FLQ3; The first end of the second auxiliary switch DL2 of isolating switch is connected with the second end of the 3rd shunt; Switching winding TQ, its first end is connected with the second end of the second auxiliary switch, and the second end is connected with power supply.Particularly, second controls hand is connected the first end of K2 with the positive pole of power supply, second end of switching winding TQ is connected with the negative pole of power supply.
In the above embodiment of the present invention, the second current monitoring circuit can comprise the 4th shunt FLQ4, and separating brake can also comprise along separate routes: separating brake pilot lamp L2, and first end is connected with the first end of the 4th shunt FLQ4, and the second end is connected with power supply; Second end of the 4th shunt FLQ4 is connected with the first end of the second auxiliary switch DL2.
Wherein, the separating brake pilot lamp L2 in above-described embodiment can be red light, and combined floodgate pilot lamp L1 can be green light.
As shown in Figure 2, the first end of control loop is connected with power supply by the first fuse RD1, and the second end of control loop is connected with power supply by the second fuse RD2.
Shunt in above-described embodiment all can monitor 20ms to 100ms timeliness, 0.5A to 10A electric current.By monitoring the current value of above 4 shunts; when being recorded in breaker actuation; the electric current at protection, aut.eq. and each position of breaker mechanism body; and failure wave-recording function is provided; for each position action situation of secondary circuit during analysis of failure provides foundation; can analyze judgement is isolating switch correct operation, or the abnormal misoperation caused appears in protection, aut.eq. and breaker mechanism body apparatus.
Present invention also offers a kind of monitoring system, any one observation circuit in above-described embodiment can be comprised.
Adopt the above embodiment of the present invention, can by the current signal in current monitoring circuit Monitoring and Controlling loop, then processor carries out fault analysis according to current signal to the isolating switch in control loop, the action situation of each branch road in control loop can be distinguished by the present invention, thus become the first-hand foundation of accident abnormality analysed in depth in control loop, solve in prior art and cannot be fault or automatically protect by decision circuitry breaking, thus the problem of control loop safety cannot be ensured, achieve real-time accurate recording and reflect the action situation of isolating switch, thus can exception malfunction ratio be reduced, to ensure power network safety operation.
The present invention can effectively monitoring breaker action time; the electric current at protection, aut.eq. and each position of breaker mechanism body; can analyse in depth judgement is isolating switch correct operation; or there is the abnormal misoperation caused in protection, aut.eq. and breaker mechanism body apparatus; strong foundation is provided to failure accident analysis; greatly reduce partial fault crash analysis not deeply; the measure taked does not have specific aim; thus effectively can not avoid the risk again occurred of similar accident, ensure that power network safety operation.
From above description, can find out, present invention achieves following technique effect: adopt the present invention, can by the current signal in current monitoring circuit Monitoring and Controlling loop, then processor carries out fault analysis according to current signal to the isolating switch in control loop, the action situation of each branch road in control loop can be distinguished by the present invention, thus become the first-hand foundation of accident abnormality analysed in depth in control loop, solve in prior art and cannot be fault or automatically protect by decision circuitry breaking, thus the problem of control loop safety cannot be ensured, achieve real-time accurate recording and reflect the action situation of isolating switch, thus can exception malfunction ratio be reduced, to ensure power network safety operation.
The claimed controller of the application and each assembly forming this controller be all a kind of have determine shape, structure and occupy the entity products of certain space.Such as, processor, comparer etc. are all can independent operating, the computer equipment with particular hardware structure, terminal or server.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an observation circuit, is characterized in that, comprising:
Control loop;
Current monitoring circuit, is connected with described control loop, for obtaining the current signal of described control loop;
Processor, is connected with described current monitoring circuit, for carrying out fault analysis according to described current signal to the isolating switch in described control loop.
2. circuit according to claim 1, is characterized in that, described processor comprises:
Comparer, is connected with described current monitoring circuit, for the size according to described current signal and predetermined threshold value, determines whether described isolating switch exists fault.
3. circuit according to claim 1, is characterized in that, described control loop comprises close a floodgate shunt and separating brake shunt, and described current signal comprises switching signal and sub-gate signal, and wherein, described current monitoring circuit comprises:
First current monitoring circuit, is connected, for obtaining described switching signal along separate routes with described combined floodgate;
Second current monitoring circuit, is connected, for obtaining described sub-gate signal along separate routes with described separating brake.
4. circuit according to claim 3, is characterized in that, described first current monitoring circuit comprises the first shunt, and described combined floodgate comprises along separate routes:
First controls hand handle, and first end is connected with power supply, and the second end is connected with the first end of described first shunt;
The first end of the first auxiliary switch of described isolating switch is connected with the second end of described first shunt;
Closing coil, its first end is connected with the second end of described first auxiliary switch, and the second end is connected with described power supply.
5. circuit according to claim 4, is characterized in that, described first current monitoring circuit comprises the second shunt, and described combined floodgate also comprises along separate routes:
Combined floodgate pilot lamp, first end is connected with the first end of described second shunt, and the second end is connected with described power supply;
Second end of described second shunt is connected with the first end of described first auxiliary switch.
6. circuit according to claim 3, is characterized in that, described second current monitoring circuit comprises the 3rd shunt, and described separating brake comprises along separate routes:
Second controls hand handle, and first end is connected with power supply, and the second end is connected with the first end of described 3rd shunt;
The first end of the second auxiliary switch of described isolating switch is connected with the second end of described 3rd shunt;
Switching winding, its first end is connected with the second end of described second auxiliary switch, and the second end is connected with described power supply.
7. circuit according to claim 6, is characterized in that, described second current monitoring circuit comprises the 4th shunt, and described separating brake also comprises along separate routes:
Separating brake pilot lamp, first end is connected with the first end of described 4th shunt, and the second end is connected with described power supply;
Second end of described 4th shunt is connected with the first end of described second auxiliary switch.
8. circuit according to claim 1, is characterized in that, the first end of described control loop is connected with power supply by the first fuse, and the second end of described control loop is connected with described power supply by the second fuse.
9. a monitoring system, is characterized in that, comprises a kind of observation circuit in claim 1 to 8 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310583357.2A CN104656011A (en) | 2013-11-19 | 2013-11-19 | Circuit and system for monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310583357.2A CN104656011A (en) | 2013-11-19 | 2013-11-19 | Circuit and system for monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104656011A true CN104656011A (en) | 2015-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310583357.2A Pending CN104656011A (en) | 2013-11-19 | 2013-11-19 | Circuit and system for monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104656011A (en) |
Cited By (3)
| 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 |
| CN111983444A (en) * | 2020-08-28 | 2020-11-24 | 国网山东省电力公司郯城县供电公司 | Circuit breaker misoperation detection system of comprehensive automatic power distribution system |
| CN114325238A (en) * | 2021-12-30 | 2022-04-12 | 上海尤比酷电气有限公司 | Low-voltage distribution line fault positioning method and system |
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Cited By (5)
| 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 |
| CN111983444A (en) * | 2020-08-28 | 2020-11-24 | 国网山东省电力公司郯城县供电公司 | Circuit breaker misoperation detection system of comprehensive automatic power distribution system |
| CN111983444B (en) * | 2020-08-28 | 2021-06-08 | 国网山东省电力公司郯城县供电公司 | Circuit breaker misoperation detection system of comprehensive automatic power distribution system |
| CN114325238A (en) * | 2021-12-30 | 2022-04-12 | 上海尤比酷电气有限公司 | Low-voltage distribution line fault positioning method and system |
| CN114325238B (en) * | 2021-12-30 | 2023-12-15 | 上海尤比酷电气有限公司 | Low-voltage distribution line fault positioning method and system |
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Application publication date: 20150527 |