CN103824731A - Method for implementing feedback function of circuit breaker - Google Patents
Method for implementing feedback function of circuit breaker Download PDFInfo
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- CN103824731A CN103824731A CN201410082974.9A CN201410082974A CN103824731A CN 103824731 A CN103824731 A CN 103824731A CN 201410082974 A CN201410082974 A CN 201410082974A CN 103824731 A CN103824731 A CN 103824731A
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- circuit breaker
- switch
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- stepping motor
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Abstract
The invention provides a method for implementing feedback function of a circuit breaker. The method comprises the following steps: 1) sending out a control command to a stepping motor by a control module; 2) controlling the circuit breaker to switch on or off by the stepping motor; 3) feeding back the state of the circuit breaker by a feedback circuit. By adopting the method, manual operation is saved and control reliability is increased. Through the method, the feedback of the state of the circuit breaker can be realized. According to the method, the scheme of the circuit breaker is simple and easy to realize, the improvement cost of the circuit breaker is small, and the state of the circuit breaker can be more comprehensively fed back so that the state of the circuit breaker is convenient to be shown to a user. The states of the circuit breaker fed back through the method comprise a switch-on state, a switch-off state and a to-be-switch-on state.
Description
Technical field
The present invention relates to a kind of breaker control technology, specifically relate to a kind of method that realizes circuit breaker feedback function.
Background technology
Circuit breaker is mounted in the load equipment of protection motor, transformer and transmission line between power supply and load unit.Avoid arc discharge fault, earth fault, short trouble and/or overload for the protection of power distribution circuit.
When fault or overload situations detected on protected circuit time, circuit breaker trip is with the separable contact of cut-off breaker, and interrupts thus the current flowing in protected circuit.Conventionally by the state of position indication circuit breaker that activates handle, this actuating handle indication circuit breaker is to connect at ON() position, OFF(disconnect) position or trip at TRIPPED() position.But in the time of circuit breaker trip, the fault type that causes trip condition is not indicated in the position that activates handle.In other words, general circuit breaker does not possess feedback and the function of communicating by letter, and staff can not understand circuit breaker operation conditions in time, the situation that therefore may occur misoperation or can not process in time the fault omen occurring.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of method that realizes circuit breaker feedback function.The present invention by adding feedback control circuit on circuit breaker, one aspect of the present invention can realize the simple control of circuit breaker, also can realize on the other hand the timely feedback of circuit-breaker status, comprising "on" position, the state of operating a switch, wait for "on" position, scheme provided by the invention can realize control to circuit breaker and the feedback function of circuit breaker in the case of very little transformation.This scheme has simple to operate, and transformation amount is little, the feature that efficiency is high.
The object of the invention is to adopt following technical proposals to realize:
Realize a method for circuit breaker feedback function, its improvements are, described method comprises:
(1) control module is sent control command to stepping motor;
(2) step motor control circuit breaker draws/closes a floodgate;
(3) feedback loop feedback circuit-breaker status.
Preferably, described step (1) comprises that control module can, according to the difference of control signal, send different control commands to stepping motor.
Preferably, described control signal comprises control line output 0v and two kinds of voltage signals of 220v.
Preferably, described step (2) comprises stepping motor forward or reverse, thereby realizes operating a switch and closing a floodgate of circuit breaker, the wherein interlock of the single-pole double-throw switch (SPDT) physics on killer switch and feedback loop.
Preferably, described step (2) comprises
When control line input 220v voltage, stepping motor rotates the killer switch that closes, and the interlock of feedback loop single-pole double-throw switch (SPDT) turns to b end, and circuit breaker enters "on" position; With
When control line input 0v voltage, stepping motor rotates backward cut-off breaker switch, and the single-pole double-throw switch (SPDT) on feedback loop turns to a end, and circuit breaker enters tripped condition.
Further, described when control line input 220v voltage, manually, by the switch disconnection of circuit breaker, on feedback loop, switch turns to a end, and now circuit breaker is in waiting for "on" position.
Further, described is manually breaker closing when control line input 0v voltage, and control module detects that the voltage on feedback loop raises, and now again sends trip signal to stepping motor, and stepping motor is operated a switch again.
Preferably, described step (3) comprises that feedback loop can feed back by voltage signal the state of circuit breaker, and its state comprises the state of operating a switch, "on" position and wait "on" position.
Preferably, on described feedback loop, resistance R1 and resistance R 2 resistance value ratios are 2:1.
Compared with the prior art, beneficial effect of the present invention is:
1. a kind of method that realizes circuit breaker feedback function provided by the invention can realize automatic switching on, and having saved manual operation increases the reliability of controlling.
2. the present invention can realize the feedback of circuit-breaker status.
3. the scheme of the circuit breaker in the present invention is simple and easy to realize, and the improvement cost of circuit breaker is little.
4. the present invention can comprehensively feed back the epidemic situation comparison of circuit breaker, and convenient operation person understands the state of circuit breaker, and the circuit-breaker status that the present invention can feed back has "on" position, operate a switch state and wait "on" position.
Accompanying drawing explanation
Fig. 1 is a kind of breaker structure schematic diagram with feedback function provided by the invention.
Fig. 2 is a kind of circuit breaker feedback loop structural representation with feedback function provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
A kind of circuit breaker with feedback function is by feedback loop 1 as shown in Figure 1 in the present invention, and control module 2 stepping motors 3 form.Feedback loop can feed back the state of circuit breaker by voltage signal, single-pole double-throw switch (SPDT) on feedback loop and the interlock of killer switch physics, in the time of breaker closing, the switch of feedback loop turns to b end, in the time that circuit breaker is operated a switch, the switch of feedback loop turns to a end, on feedback loop, resistance R1 and resistance R 2 resistance value ratios are 2:1, and feedback loop can feed back by voltage signal three kinds of states of circuit breaker: the state of operating a switch, "on" position and wait "on" position.
Control module can be according to the difference of control signal, stepping motor is sent to different control commands, realize the automatic switching on of circuit breaker, control line can be exported 0v and two kinds of voltage signals of 220v, in the time that control Voltage-output is 220v, breaker closing, in the time that control Voltage-output is 0v, circuit breaker is operated a switch, the function that control module also has tripping operation to maintain, in the time of breaker control signal input 0v, when closing by hand, control module can send trip signal to stepping motor again; Stepping motor can receive the order of control module, controls motor forward or reversion, thereby realizes operating a switch and closing a floodgate of circuit breaker.
Under tripped condition, in the time of control line input 220v voltage, control module sends to stepping motor Ta the order of closing a floodgate, stepping motor rotates the killer switch that closes, the interlock of feedback loop single-pole double-throw switch (SPDT), turn to b end, b end is connected with live wire by 100k Ω resistance, so feedback line output 220v voltage illustrates the success of combined floodgate command execution, circuit breaker enters "on" position, now, if manually the switch of circuit breaker is disconnected, on feedback loop, switch turns to a end, now feedback line output voltage is 73v left and right, and now circuit breaker is in waiting for "on" position;
Under "on" position, in the time of control line input 0v voltage, control module sends trip signal to stepping motor Ta, and stepping motor rotates backward cut-off breaker switch, and the single-pole double-throw switch (SPDT) on feedback loop turns to a end, now feedback line output voltage is 0v, circuit breaker enters tripped condition, if be manually now breaker closing, control module can detect that the voltage on feedback loop raises, now again send trip signal to stepping motor, stepping motor is operated a switch again.
Embodiment
The present embodiment take breaker tripping and closing process as example illustrates the course of work of the present invention, be specially:
Start breaker closing, now the initial state of circuit breaker is for disconnecting, control line voltage is input as 0v, single-pole double-throw switch (SPDT) on feedback loop is connected with a, control line and zero line equipotential, so the output signal on feedback line is 0v, if now manually to breaker closing, the single-pole double-throw switch (SPDT) of feedback loop turns to b end, and b end is connected with live wire, and output voltage is 220v, when control module detects that controlling voltage is 0v and feedback line output 220v voltage, be judged as abnormal close, send trip signal to stepping motor Ta, return to tripped condition.First, at the voltage signal of control line input 220v, control line connects synchronous machine Ta, Ta receives the control signal of 220v, in another shunt of control line, be connected with zero line, in shunt, have R1 and two divider resistances of R2, R1 is 2:1 with the ratio of the resistance of R2, so the control voltage that the feedback voltage of a end is 1/3, now circuit breaker enters wait "on" position; Now synchronous machine Ta drives killer switch to close a floodgate, the single-pole double-throw switch (SPDT) linked steering b end on feedback loop, and now, feedback loop is connected with live wire by resistance R, output feedback voltage 220v, circuit breaker enters "on" position.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not depart from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (9)
1. a method that realizes circuit breaker feedback function, is characterized in that, described method comprises:
(1) control module is sent control command to stepping motor;
(2) step motor control circuit breaker draws/closes a floodgate;
(3) feedback loop feedback circuit-breaker status.
2. a kind of method that realizes circuit breaker feedback function as claimed in claim 1, is characterized in that, described step (1) comprises that control module can, according to the difference of control signal, send different control commands to stepping motor.
3. a kind of method that realizes circuit breaker feedback function as claimed in claim 1, is characterized in that, described control signal comprises control line output 0v and two kinds of voltage signals of 220v.
4. a kind of method that realizes circuit breaker feedback function as claimed in claim 1, it is characterized in that, described step (2) comprises stepping motor forward or reverse, thereby realizes operating a switch and closing a floodgate of circuit breaker, the wherein interlock of the single-pole double-throw switch (SPDT) physics on killer switch and feedback loop.
5. a kind of method that realizes circuit breaker feedback function as claimed in claim 1, is characterized in that, described step (2) comprises
When control line input 220v voltage, stepping motor rotates the killer switch that closes, and the interlock of feedback loop single-pole double-throw switch (SPDT) turns to b end, and circuit breaker enters "on" position; With
When control line input 0v voltage, stepping motor rotates backward cut-off breaker switch, and the single-pole double-throw switch (SPDT) on feedback loop turns to a end, and circuit breaker enters tripped condition.
6. a kind of method that realizes circuit breaker feedback function as claimed in claim 5, is characterized in that, described when control line input 220v voltage, manually, by the switch disconnection of circuit breaker, on feedback loop, switch turns to a end, and now circuit breaker is in waiting for "on" position.
7. a kind of method that realizes circuit breaker feedback function as claimed in claim 5, it is characterized in that, described when control line input 0v voltage, be manually breaker closing, control module detects that the voltage on feedback loop raises, now again send trip signal to stepping motor, stepping motor is operated a switch again.
8. a kind of method that realizes circuit breaker feedback function as claimed in claim 1, it is characterized in that, described step (3) comprises that feedback loop can feed back by voltage signal the state of circuit breaker, and its state comprises the state of operating a switch, "on" position and wait "on" position.
9. a kind of method that realizes circuit breaker feedback function as claimed in claim 1, is characterized in that, on described feedback loop, resistance R1 and resistance R 2 resistance value ratios are 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082974.9A CN103824731B (en) | 2014-03-07 | 2014-03-07 | A kind of method realizing circuit breaker feedback function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082974.9A CN103824731B (en) | 2014-03-07 | 2014-03-07 | A kind of method realizing circuit breaker feedback function |
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| CN103824731A true CN103824731A (en) | 2014-05-28 |
| CN103824731B CN103824731B (en) | 2016-04-20 |
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| CN201410082974.9A Active CN103824731B (en) | 2014-03-07 | 2014-03-07 | A kind of method realizing circuit breaker feedback function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268993A (en) * | 2014-10-22 | 2015-01-07 | 长城电器集团有限公司 | Special breaker circuit for miniature prepaid electricity meter |
| CN106291342A (en) * | 2016-07-19 | 2017-01-04 | 南宏电力科技有限公司 | The on off state detection method of a kind of protective relaying device and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0691669A1 (en) * | 1994-07-06 | 1996-01-10 | Schneider Electric Sa | Auxiliary block, in particular condition indicator for circuit breakers |
| CN200944383Y (en) * | 2006-09-04 | 2007-09-05 | 沈阳工业大学 | Servo control device for high-voltage breaker contact position |
| CN201282084Y (en) * | 2008-09-24 | 2009-07-29 | 常熟开关制造有限公司(原常熟开关厂） | Circuit for implementing circuit breaker fault indication |
| CN201369301Y (en) * | 2009-03-18 | 2009-12-23 | 江苏辉能电气有限公司 | Leakage breaker with indication function of many failures |
| US20110147178A1 (en) * | 2009-12-22 | 2011-06-23 | Schneider Electric USA, Inc. | Electronic Miniature Circuit Breaker With Trip Indication Using The Breaker Tripping Function As The Feedback Mechanism |
-
2014
- 2014-03-07 CN CN201410082974.9A patent/CN103824731B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0691669A1 (en) * | 1994-07-06 | 1996-01-10 | Schneider Electric Sa | Auxiliary block, in particular condition indicator for circuit breakers |
| CN200944383Y (en) * | 2006-09-04 | 2007-09-05 | 沈阳工业大学 | Servo control device for high-voltage breaker contact position |
| CN201282084Y (en) * | 2008-09-24 | 2009-07-29 | 常熟开关制造有限公司(原常熟开关厂） | Circuit for implementing circuit breaker fault indication |
| CN201369301Y (en) * | 2009-03-18 | 2009-12-23 | 江苏辉能电气有限公司 | Leakage breaker with indication function of many failures |
| US20110147178A1 (en) * | 2009-12-22 | 2011-06-23 | Schneider Electric USA, Inc. | Electronic Miniature Circuit Breaker With Trip Indication Using The Breaker Tripping Function As The Feedback Mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104268993A (en) * | 2014-10-22 | 2015-01-07 | 长城电器集团有限公司 | Special breaker circuit for miniature prepaid electricity meter |
| CN106291342A (en) * | 2016-07-19 | 2017-01-04 | 南宏电力科技有限公司 | The on off state detection method of a kind of protective relaying device and device |
| CN106291342B (en) * | 2016-07-19 | 2019-07-16 | 南宏电力科技有限公司 | A kind of switch state detection method and device of protective relaying device |
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| Publication number | Publication date |
|---|---|
| CN103824731B (en) | 2016-04-20 |
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