CN105490256A - Control loop coil fault reducing device and method - Google Patents
Control loop coil fault reducing device and method Download PDFInfo
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- CN105490256A CN105490256A CN201610036483.XA CN201610036483A CN105490256A CN 105490256 A CN105490256 A CN 105490256A CN 201610036483 A CN201610036483 A CN 201610036483A CN 105490256 A CN105490256 A CN 105490256A
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- control loop
- output relay
- loop coil
- electric current
- time
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches
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Abstract
The invention provides a control loop coil fault reducing device and method. The control loop coil fault reducing device comprises a comprehensive protector which comprises a current display panel, a time display panel, a first single-chip microcomputer, a second single-chip microcomputer, a switching power supply, a time output relay and a current output relay. Sampling of current flowing through a control loop coil is performed by the sampling resistor arranged in the comprehensive protector and the numerical values are transmitted to the first single-chip microcomputer. After the numerical values reach the starting value, the current output relay is started, and an output signal is transmitted to the second single-chip microcomputer. The time display panel starts timing. When timing reaches the starting value, the time output relay is started, and the time output relay actuates to disconnect a control power supply air switch so that the fault of the coil can be avoided. According to the device and the method, the number of times of failure of separating and closing coils can be effectively reduced, the steps are simple, operation is convenient and practicality is high, and thus the device and the method are safe and reliable.
Description
Technical field
The invention belongs to electric equipment resist technology field, particularly relate to a kind of device and method reducing control loop coil fault.
Background technology
Control loop coil refer to circuit breaker be connected in control loop point, closing coil.When after switching winding fault, switch cannot separating brake, if now line failure, switch will tripping; After closing coil fault, switch cannot close a floodgate, if now line failure, switch tripping but reclosing are failure to actuate, and switch cannot close, switch failure, and protective relaying device cannot correct operation.
The reason causing control loop coil to break down is mainly the electric current overrate of flowing through coil, and ambient temperature is too high, and this is the deficiency of existing ordinary electromagnetic formula operating mechanism.
Therefore, a kind of device and method reducing control loop coil fault is provided, to solve the problems of the technologies described above, is necessary.
Summary of the invention
The object of the invention is to the defect existed for above-mentioned existing control loop coil, provide a kind of device and method reducing control loop coil fault, to solve the problems of the technologies described above.
For achieving the above object, the present invention provides following technical scheme:
A kind of device reducing control loop coil fault, comprise comprehensive protection device, it is characterized in that: described comprehensive protection device comprises electric current display floater, time showing panel, the first single-chip microcomputer, second singlechip, Switching Power Supply, time output relay and electric current output relay, described comprehensive protection device access control loop;
Described first single-chip microcomputer is connected with sampling resistor, Switching Power Supply, electric current display floater and electric current output relay; The output of described electric current output relay is connected to second singlechip; Described second singlechip is also connected with time showing panel and time output relay; The output connection control power supply air switch of described time output relay.
As preferably, described a kind of device reducing control loop coil fault also comprises temperature controller, and the warning outlet line of described temperature controller is connected to transformer station's background server by observing and controlling screen signal circuit.
As preferably, the alarm temperature of described temperature controller is 30 degrees Celsius.
As preferably, described temperature controller is arranged on switch cubicle.
Design like this, the warning outlet line of temperature controller has overtemperature alarm function, and when in-cabinet temperature is more than 30 degrees Celsius, operation monitoring personnel can receive overtemperature alarm signal, open ventilation unit to scene, carry out radiating treatment; Temperature controller is longer for useful life, and the transmission medium of alarm signal is optical fiber, and transfer of data is stablized, and signal is accurate, and instantaneity is strong; Only need carry out wiring adjustment to the temperature controller on switch cubicle in transformer station during installation, not need to have a power failure, easy-to-connect.
As preferably, described first single-chip microcomputer, second singlechip are 89S51 single-chip microcomputer.
Design like this, this single-chip microcomputer can online programming, and can be repeatedly erasable, supports C language compiling.
As preferably, the current parameters set point of described electric current output relay is 2.5A
As preferably, the time parameter set point of described time output relay is 2s.
Design like this, output relay includes a pair normal opened contact, a pair normally closed contact; Reach the initiation value of setting, after namely reaching operation condition, contact action.
Reduce a method for control loop coil fault, it is characterized in that: this implementation step comprises:
1) closing pulse is passed through in control loop coil;
2) sampling resistor is sampled to the electric current flowing through control loop coil, and sends numerical value to first single-chip microcomputer;
3) current value received processes by the first single-chip microcomputer, and current value is presented at electric current display floater;
4) when current value reaches electric current output relay initiation value, electric current output relay starts, and output signal is passed to second singlechip;
5) second singlechip display floater start-up time starts timing;
6) when the time reaches time output relay initiation value, time output relay starts, and controls the tripping of power supply air switch;
7) loop of control loop coil disconnects.
Beneficial effect of the present invention is:
The invention provides a kind of device and method reducing control loop coil fault of knowing clearly, in the present invention, in comprehensive protection device, sampling resistor is sampled to the electric current flowing through control loop coil, and numerical value is passed to the first single-chip microcomputer, current values is presented on electric current display floater; When electric current reaches 2.5A, starting current output relay, output signal is passed to second singlechip, second singlechip starts, and time showing panel starts timing, reaches time parameter set point, namely after 2 seconds, start-up time output relay, time output relay action tripping controls power supply air switch, avoids coil to break down.Device and method provided by the invention successfully eliminates the main crux of circuit-breaker switching on-off coil, effectively reduces the number of stoppages of divide-shut brake coil, reduces the workload of coil maintenance, and step is simple, easy to operate, practical, safe and reliable.
In addition, design principle of the present invention is reliable, and structure is simple, has application prospect widely.
As can be seen here, the present invention compared with prior art, has outstanding substantive distinguishing features and progress significantly, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation reducing the comprehensive protection device of the device of control loop coil fault provided by the invention.
Fig. 2 is a kind of structural representation reducing the temperature controller of the device of control loop coil fault provided by the invention.
Fig. 3 is a kind of flow chart of steps reducing the method for control loop coil fault provided by the invention.
Wherein, 1-temperature controller, 101-warning outlet line; 102-transformer station background server; 2-comprehensive protection device, 201-electric current display floater, 202-time showing panel; 203-first single-chip microcomputer; 204-second singlechip, 205-electric current output relay, 206-time output relay; 207-controls power supply air switch, 208-sampling resistor.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the present invention will be described in detail, and following examples are explanation of the invention, and the present invention is not limited to following execution mode.
As shown in Fig. 1 to 2, a kind of device reducing control loop coil fault provided by the invention, comprise comprehensive protection device 2, described comprehensive protection device 2 comprises electric current display floater 201, time showing panel 202, first single-chip microcomputer 203, second singlechip 204, Switching Power Supply, time output relay 206 and electric current output relay 205, described comprehensive protection device 2 access control loop;
Described first single-chip microcomputer 203 is connected with sampling resistor 208, Switching Power Supply, electric current display floater 201 and electric current output relay 205; The output of described electric current output relay 205 is connected to second singlechip 204; Described second singlechip 204 is also connected with time showing panel 202 and time output relay 206; The output connection control power supply air switch 207 of described time output relay 206;
In the present embodiment, described a kind of device reducing control loop coil fault also comprises temperature controller 1, and the warning outlet line 101 of described temperature controller 1 is connected to transformer station's background server 102 by observing and controlling screen signal circuit.
In the present embodiment, the alarm temperature of described temperature controller 1 is 30 degrees Celsius.
In the present embodiment, described temperature controller 1 is arranged on switch cubicle.
Design like this, monitor staff opens ventilation unit to scene after receiving overtemperature alarm signal, carries out radiating treatment; Temperature controller 1 is longer for useful life, and the transmission medium of alarm signal is optical fiber, and transfer of data is stablized, and signal is accurate, and instantaneity is strong; Only need carry out wiring adjustment to the temperature controller 1 on switch cubicle in transformer station during installation, not need to have a power failure, easy-to-connect.
In the present embodiment, described first single-chip microcomputer 203, second singlechip 204 are 89S51 single-chip microcomputer.
Design like this, this single-chip microcomputer can online programming, and can be repeatedly erasable, supports C language compiling.
In the present embodiment, the current parameters set point of described electric current output relay 205 is 2.5A
In the present embodiment, the time parameter set point of described time output relay 206 is 2s.
Design like this, output relay includes a pair normal opened contact, a pair normally closed contact; Reach the initiation value of setting, after namely reaching operation condition, contact action.
As shown in Figure 3, a kind of method reducing control loop coil fault provided by the invention, implementation step comprises:
1) closing pulse is passed through in control loop coil;
2) sampling resistor is sampled to the electric current flowing through control loop coil, and sends numerical value to first single-chip microcomputer;
3) current value received processes by the first single-chip microcomputer, and current value is presented at electric current display floater;
4) when current value reaches electric current output relay initiation value, electric current output relay starts, and output signal is passed to second singlechip;
5) second singlechip display floater start-up time starts timing;
6) when the time reaches time output relay initiation value, time output relay starts, and controls the tripping of power supply air switch;
7) loop of control loop coil disconnects.
The invention provides a kind of device and method reducing control loop coil fault of knowing clearly, in the present invention, in comprehensive protection device, sampling resistor is sampled to the electric current flowing through control loop coil, and numerical value is passed to the first single-chip microcomputer, current values is presented on electric current display floater; When electric current reaches 2.5A, starting current output relay, output signal is passed to second singlechip, second singlechip starts, and time showing panel starts timing, reaches time parameter set point, namely after 2 seconds, start-up time output relay, time output relay action tripping controls power supply air switch, avoids coil to break down.Device and method provided by the invention successfully eliminates the main crux of circuit-breaker switching on-off coil, effectively reduces the number of stoppages of divide-shut brake coil, reduces the workload of coil maintenance, and step is simple, easy to operate, practical, safe and reliable.
After a kind of device reducing control loop coil fault provided by the invention is installed and used, the number of times that because of " coil burnout " break down of control loop divide-shut brake coil in four months is reduced to 0 time by 7 times, obviously solves the main crux causing divide-shut brake coil fault.A kind of method reducing control loop coil fault provided by the invention includes technical standard in, for ensureing use standardization of the present invention.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention, and all done any amendments within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. one kind is reduced the device of control loop coil fault, comprise comprehensive protection device, it is characterized in that: described comprehensive protection device comprises electric current display floater, time showing panel, the first single-chip microcomputer, second singlechip, Switching Power Supply, time output relay and electric current output relay, described comprehensive protection device access control loop;
Described first single-chip microcomputer is connected with sampling resistor, Switching Power Supply, electric current display floater and electric current output relay; The output of described electric current output relay is connected to second singlechip; Described second singlechip is also connected with time showing panel and time output relay; The output connection control power supply air switch of described time output relay.
2. a kind of device reducing control loop coil fault as claimed in claim 1, it is characterized in that: described a kind of device reducing control loop coil fault also comprises temperature controller, the warning outlet line of described temperature controller is connected to transformer station's background server by observing and controlling screen signal circuit.
3. a kind of device reducing control loop coil fault as claimed in claim 1 or 2, is characterized in that: the alarm temperature of described temperature controller is 30 degrees Celsius.
4. a kind of device reducing control loop coil fault as claimed in claim 3, is characterized in that: described temperature controller is arranged on switch cubicle.
5. a kind of device reducing control loop coil fault as claimed in claim 4, is characterized in that: described first single-chip microcomputer, second singlechip are 89S51 single-chip microcomputer.
6. a kind of device reducing control loop coil fault as claimed in claim 5, is characterized in that: the time parameter set point of described time output relay is 2s.
7. a kind of device reducing control loop coil fault as claimed in claim 6, is characterized in that: the current parameters set point of described electric current output relay is 2.5A.
8. reduce a method for control loop coil fault, it is characterized in that: this implementation step comprises:
1) closing pulse is passed through in control loop coil;
2) sampling resistor is sampled to the electric current flowing through control loop coil, and sends numerical value to first single-chip microcomputer;
3) current value received processes by the first single-chip microcomputer, and current value is presented at electric current display floater;
4) when current value reaches electric current output relay initiation value, electric current output relay starts, and output signal is passed to second singlechip;
5) second singlechip display floater start-up time starts timing;
6) when the time reaches time output relay initiation value, time output relay starts, and controls the tripping of power supply air switch;
7) loop of control loop coil disconnects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036483.XA CN105490256B (en) | 2016-01-20 | 2016-01-20 | A kind of device and method reducing control loop coil fault |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036483.XA CN105490256B (en) | 2016-01-20 | 2016-01-20 | A kind of device and method reducing control loop coil fault |
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| CN105490256A true CN105490256A (en) | 2016-04-13 |
| CN105490256B CN105490256B (en) | 2018-11-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655111A (en) * | 2016-10-20 | 2017-05-10 | 国家电网公司 | Circuit breaker tripping and closing coil real-time measurement and control protection device and protection method |
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| CN101825907A (en) * | 2009-12-25 | 2010-09-08 | 上海纳杰电气成套有限公司 | Detection, control and alarm system for in-cabinet temperature of low-voltage switch cabinet |
| CN202930897U (en) * | 2012-10-17 | 2013-05-08 | 深圳市华力特电气股份有限公司 | Relay protection device |
| CN203502558U (en) * | 2013-09-25 | 2014-03-26 | 国家电网公司 | On-line monitoring device for switching-on/switching-off coil of transformer station high-voltage circuit breaker |
| CN104678936A (en) * | 2013-12-03 | 2015-06-03 | 国家电网公司 | Monitoring equipment and system for electrical distribution facility |
| CN105098735A (en) * | 2015-08-25 | 2015-11-25 | 国家电网公司 | Breaking-closing coil protection device |
| CN205377269U (en) * | 2016-01-20 | 2016-07-06 | 国网山东省电力公司滨州供电公司 | Reduce device of control circuit coil trouble |
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2016
- 2016-01-20 CN CN201610036483.XA patent/CN105490256B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825907A (en) * | 2009-12-25 | 2010-09-08 | 上海纳杰电气成套有限公司 | Detection, control and alarm system for in-cabinet temperature of low-voltage switch cabinet |
| CN202930897U (en) * | 2012-10-17 | 2013-05-08 | 深圳市华力特电气股份有限公司 | Relay protection device |
| CN203502558U (en) * | 2013-09-25 | 2014-03-26 | 国家电网公司 | On-line monitoring device for switching-on/switching-off coil of transformer station high-voltage circuit breaker |
| CN104678936A (en) * | 2013-12-03 | 2015-06-03 | 国家电网公司 | Monitoring equipment and system for electrical distribution facility |
| CN105098735A (en) * | 2015-08-25 | 2015-11-25 | 国家电网公司 | Breaking-closing coil protection device |
| CN205377269U (en) * | 2016-01-20 | 2016-07-06 | 国网山东省电力公司滨州供电公司 | Reduce device of control circuit coil trouble |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106655111A (en) * | 2016-10-20 | 2017-05-10 | 国家电网公司 | Circuit breaker tripping and closing coil real-time measurement and control protection device and protection method |
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| CN105490256B (en) | 2018-11-13 |
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