CN204216577U - A kind of protective device preventing high-voltage circuit breaker lock coil burnout - Google Patents
A kind of protective device preventing high-voltage circuit breaker lock coil burnout Download PDFInfo
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- CN204216577U CN204216577U CN201420572250.8U CN201420572250U CN204216577U CN 204216577 U CN204216577 U CN 204216577U CN 201420572250 U CN201420572250 U CN 201420572250U CN 204216577 U CN204216577 U CN 204216577U
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- switching winding
- protection module
- protective device
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Abstract
The utility model relates to a kind of protective device preventing high-voltage circuit breaker lock coil burnout; it is characterized in that; described protective device comprises monitoring and protection module (5), switching winding (3); described monitoring and protection module comprises the first test side (0), the second test side and earth terminal; described first test side is electrically connected with one end of switching winding (3); second test side is electrically connected with the other end of switching winding (3); earth terminal ground connection, described monitoring and protection module (5) also has the receiving end be connected with external power source.The beneficial effects of the utility model are as follows: 1) whole Technical Design is ingenious, rational in infrastructure; 2) the monitoring and protection module in this technical scheme and switching winding form an independent measure loop, can monitor the state of switching winding in real time; Monitoring and protection module also by earth terminal by switching winding separating brake moment residual voltage removal, prevent switching winding from burning in separating brake process; 3) whole technical scheme cost is lower, is convenient to apply on a large scale.
Description
Technical field
The utility model relates to a kind of protective device, especially relates to a kind of protective device preventing high-voltage circuit breaker lock coil burnout, belongs to power system device technical field.
Background technology
Primary cut-out is the capital equipment that power system operation controls, and its control loop and direct current, protection, automatics, circuit breaker actuating, central signal etc. connect each other, realize the functions such as the control to primary equipment, protection, supervision.Primary cut-out not only can cut off and connect no-load current in high-tension circuit under normal circumstances and load current; can also match with protective device and automatics when system jam; rapid disengagement failure electric current, Accident prevention expands, and ensures system safety operation.
Circuit breaker comprises circuit part, actuating part, running part and insulated part.Different by operating mechanism, man-operating mechanism, electromagnetic mechanism, spring mechanism, motor mechanism and hydraulic pressure (or pneumatic) mechanism can be divided into.Breaker open operation is malfunctioning generally has the mechanical part of operating mechanism to have fault, the abnormalities such as operation circuit, closing circuit, decompression or broken string.And operating mechanism is the important component part of circuit breaker, no matter be in normal duty situation to its general requirement, or when being short-circuited fault, the equipment that it controls can be divided reliably, is closed a floodgate.
In prior art, during normal running separating brake, whether normal according to red eye, judge whether operating power disappears.As red light does not work, should replacement operation fuse rapidly, check switching winding and SF simultaneously
6whether pressure, hydraulic mechanism pressure is normal, and then carry out sub-switching operation, and send special messenger to arrive field observation switch motion situation, to judge operation circuit fault or mechanical fault own.Operation of the prior art is very loaded down with trivial details, and easily occurs coil burnout, therefore, solves above-mentioned technical problem in the urgent need to a kind of new technical scheme.
Summary of the invention
The utility model is just for the technical problem existed in prior art; a kind of device preventing high-voltage circuit breaker lock coil burnout is provided; this technical scheme can not only learn when circuit breaker is in gate-dividing state that whether switching winding is normal, also by unloading pressure protection switching winding, prevents from burning.
To achieve these goals, the technical solution adopted in the utility model is, a kind of protective device preventing high-voltage circuit breaker lock coil burnout, it is characterized in that, described protective device comprises monitoring and protection module, switching winding, described monitoring and protection module comprises the first test side, the second test side and earth terminal, described first test side is electrically connected with one end of switching winding, second test side is electrically connected with the other end of switching winding, earth terminal ground connection, described monitoring and protection module also has the receiving end be connected with external power source; Described second test side is the joint of monitoring and protection module and indicator light, and receiving end is the tie point of monitoring and protection module and negative supply.
Improve as one of the present utility model; described monitoring and protection module comprises monitoring unit, pressure relief unit and logical block; described monitoring unit is all connected with logical block with pressure relief unit; first, second test side of described monitoring and protection module is positioned at monitoring unit, and earth terminal is positioned at pressure relief unit.
Improve as one of the present utility model, described monitoring unit comprises decoding element, the first input end of decoding element is connected with the first test side A through the first sampling element, second input of decoding element is connected with the second test side B through the second sampling element, 3rd input of decoding element is connected with current sensor, and current sensor is sheathed on switching winding; The output of decoding element is connected with logical block; The output of first, second sampling element is connected with pressure relief unit respectively.
Improve as one of the present utility model, described decoding element is 741s138, and described first sampling element is IC555, and described second sampling element is IC555, and described current sensor is LA55-P.Such setting can well complete sampling, storage, calculates and can arrange definite value.This device performance is stable ripe, and price is cheap compared with like product, economical and practical.
Improve as one of the present utility model, the high resistant zinc oxide unloader (FS) that described pressure relief unit comprises one end ground connection, the other end is connected with monitoring unit through backward diode.Such setting may be used for detecting switching winding current potential, to determine that whether switching winding is normal, in addition, also discharges for release.
Improve as one of the present utility model, described logical block comprises the microprocessor that input is connected with monitoring unit, and the output of microprocessor is connected with light-emitting diode, and the reset terminal of microprocessor is connected with reset button (Reset).
Improve as one of the present utility model, described microprocessor is intel8086.
Relative to prior art, the beneficial effects of the utility model are as follows: 1) whole Technical Design is ingenious, rational in infrastructure; 2) the monitoring and protection module in this technical scheme and switching winding form an independent measure loop, can monitor the state of switching winding in real time; Monitoring and protection module also by earth terminal by switching winding separating brake moment residual voltage removal, prevent switching winding from burning in separating brake process; 3) whole technical scheme cost is lower, is convenient to apply on a large scale.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the circuit block diagram of Fig. 1 embodiment monitoring and protection module.
Fig. 3 is the monitoring unit circuit diagram of Fig. 1 embodiment monitoring and protection module.
Fig. 4 is the pressure relief unit circuit diagram of Fig. 1 embodiment monitoring and protection module.
Fig. 5 is the logic unit circuit figure of Fig. 1 embodiment monitoring and protection module.
Wherein: 0 is the first test side, 1 is opening button, and 2 is normally closed auxiliary contact, and 3 is switching winding, and 4 is indicator light, and 5 is monitoring and protection module, and 6 is monitoring unit, and 7 is pressure release unit, and 8 is logical block.
Embodiment
In order to deepen understanding and cognition of the present utility model, below in conjunction with accompanying drawing the utility model be further described and introduce.
embodiment 1:see Fig. 1; a kind of protective device preventing high-voltage circuit breaker lock coil burnout; described protective device comprises monitoring and protection module 5, switching winding 3; described monitoring and protection module comprises the first test side 0, second test side and earth terminal; described second test side is the joint of monitoring and protection module and indicator light, and receiving end is the tie point of monitoring and protection module and negative supply.Described first test side is electrically connected with one end of switching winding 3, and the second test side is electrically connected with the other end of switching winding 3, earth terminal ground connection, and described monitoring and protection module 5 also has the receiving end be connected with external power source.Wherein, monitoring and protection module 5 and switching winding 3 form an independent measure loop, can monitor the state of switching winding 3 in real time; Monitoring and protection module 5 also by earth terminal by switching winding 3 separating brake moment residual voltage removal, prevent switching winding 3 from burning in making process.
embodiment 2:see Fig. 2, described monitoring and protection module 5 comprises monitoring unit 6, pressure relief unit 7 and logical block 8, described monitoring unit 6 is all connected with logical block 8 with pressure relief unit 7, and first, second test side of described monitoring and protection module 5 is positioned at monitoring unit 6, and earth terminal is positioned at pressure relief unit 7; Whether normally detect switching winding 3 by monitoring unit 6, and testing result is sent to logical block 8 and judge whether to send warning signal; Meanwhile, switching winding 3 is communicated with pressure relief unit 7 by monitoring unit 6, pressure relief unit 7 conducting when switching winding 3 residual voltage value exceedes predeterminated level, discharges residual voltage earthward.
embodiment 3:see Fig. 3, monitoring unit 6 comprises decoding element, be set to 741s138, the first input end of decoding element is connected with the first test side A through the first sampling element and IC555, second input of decoding element is connected with the second test side B through the second sampling element and IC555,3rd input of decoding element is connected with current sensor and LA55-P, and current sensor is sheathed on switching winding 3; The output of decoding element is connected with logical block 8; The output of first, second sampling element is connected with pressure relief unit 7 respectively.
embodiment 4:see Fig. 4, the high resistant zinc oxide unloader (FS) that described pressure relief unit 7 comprises one end ground connection, the other end is connected with monitoring unit 6 through backward diode.The advantage of such setting can ensure that direct current system ground connection can not occur, influential system safe operation on the one hand; Pressure relief capability can be improved on the other hand.This technical scheme, for detecting switching winding current potential, to determine that whether switching winding is normal, in addition, also discharges for release.
embodiment 5:see Fig. 5, logical block 8 comprises the microprocessor and intel8086 that input is connected with monitoring unit 6, and the output of microprocessor is connected with light-emitting diode, and the reset terminal of microprocessor is connected with reset button (Reset).
Operation principle: when circuit breaker is in gate-dividing state, monitoring unit 6 on-line measurement switching winding 3 liang of terminal potentials, and compare calculating in real time, judge whether switching winding is normal and send judged result to logical block 8; In addition, residual voltage in coil also by the electric current of current sensor monitoring switching winding in separating brake moment, if monitor electric current, is then released into the earth by pressure relief unit 7 by monitoring unit 6; Logical block 8 is made a response according to the judged result of monitoring unit 6, and when monitoring unit 6 judges that switching winding is abnormal, logical block 8 output signal makes light-emitting diode light, and plays warning effect.When there is DC earthing or switching winding 3 negative pole voltage to earth is less than the situation of 80V, monitoring unit 6 is measured closing coil 3 both end voltage and can be forbidden, cause error in judgement, now control monitoring unit 6 by logical block 8 to stop measuring, until recover again after pressing the reset button of logical block 8 to measure.
The present embodiment device can not only learn when circuit breaker is in gate-dividing state that whether switching winding is normal, also by unloading pressure protection switching winding, prevents from burning.
At least one in technical characteristic described in embodiment 2,3,4,5 and embodiment 1 can also be combined to form new execution mode by the utility model.
It should be noted that above-described embodiment, be not used for limiting protection range of the present utility model, equivalents done on the basis of technique scheme or the alternative scope all falling into the utility model claim and protect.
Claims (7)
1. one kind prevents the protective device of high-voltage circuit breaker lock coil burnout; it is characterized in that; described protective device comprises monitoring and protection module (5), switching winding (3); described monitoring and protection module comprises the first test side (0), the second test side and earth terminal; described first test side is electrically connected with one end of switching winding (3); second test side is electrically connected with the other end of switching winding (3); earth terminal ground connection, described monitoring and protection module (5) also has the receiving end be connected with external power source.
2. the protective device preventing high-voltage circuit breaker lock coil burnout according to claim 1; it is characterized in that; described monitoring and protection module (5) comprises monitoring unit (6), pressure relief unit (7) and logical block (8); described monitoring unit (6) is all connected with logical block (8) with pressure relief unit (7); first, second test side of described monitoring and protection module 5 is positioned at monitoring unit (6), and earth terminal is positioned at pressure relief unit (7).
3. the protective device preventing high-voltage circuit breaker lock coil burnout according to claim 2, it is characterized in that, described monitoring unit (6) comprises decoding element, the first input end of decoding element is connected with the first test side A through the first sampling element, second input of decoding element is connected with the second test side B through the second sampling element, 3rd input of decoding element is connected with current sensor, and current sensor is sheathed on switching winding (3); The output of decoding element is connected with logical block (8); The output of first, second sampling element is connected with pressure relief unit (7) respectively.
4. the protective device preventing high-voltage circuit breaker lock coil burnout according to claim 3; it is characterized in that, described decoding element is 741s138, and described first sampling element is IC555; described second sampling element is IC555, and described current sensor is LA55-P.
5. the protective device preventing high-voltage circuit breaker lock coil burnout according to claim 3 or 4; it is characterized in that, described pressure relief unit (7) comprises one end ground connection, high resistant zinc oxide unloader that the other end is connected with monitoring unit (6) through backward diode.
6. the protective device preventing high-voltage circuit breaker lock coil burnout according to claim 5; it is characterized in that; described logical block (8) comprises the microprocessor that input is connected with monitoring unit (6); the output of microprocessor is connected with light-emitting diode, and the reset terminal of microprocessor is connected with reset button.
7. the protective device preventing high-voltage circuit breaker lock coil burnout according to claim 6, is characterized in that, described microprocessor is intel8086.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420572250.8U CN204216577U (en) | 2014-09-30 | 2014-09-30 | A kind of protective device preventing high-voltage circuit breaker lock coil burnout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420572250.8U CN204216577U (en) | 2014-09-30 | 2014-09-30 | A kind of protective device preventing high-voltage circuit breaker lock coil burnout |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216577U true CN204216577U (en) | 2015-03-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420572250.8U Expired - Fee Related CN204216577U (en) | 2014-09-30 | 2014-09-30 | A kind of protective device preventing high-voltage circuit breaker lock coil burnout |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204216577U (en) |
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2014
- 2014-09-30 CN CN201420572250.8U patent/CN204216577U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 |
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| CF01 | Termination of patent right due to non-payment of annual fee |