CN103269122B - Power distribution automatic terminal and method for improving reliability of breaker - Google Patents
Power distribution automatic terminal and method for improving reliability of breaker Download PDFInfo
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- CN103269122B CN103269122B CN201310158892.3A CN201310158892A CN103269122B CN 103269122 B CN103269122 B CN 103269122B CN 201310158892 A CN201310158892 A CN 201310158892A CN 103269122 B CN103269122 B CN 103269122B
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- switch
- breaker
- monitoring module
- power
- anomaly monitoring
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Abstract
The invention discloses a power distribution automatic terminal and a method for improving reliability of a breaker. The power distribution automatic terminal comprises a switching abnormality monitoring interface, software and a controllable switching operation power supply module, wherein the monitoring interface and the software are arranged in a distribution network automatic terminal. A control chip of the power supply module has the working capability of turning off a PWM switching power supply. A control pin of the control chip is controlled by the distribution network automatic terminal so as to stop or recover energizing of an operation circuit of the breaker. The protection method is characterized in that a measuring and controlling module of the power distribution automatic terminal monitors the breaker; when a breaker control coil which does not finish a control action for a long time is energized, the measuring and controlling module emits a control signal to the power supply module; the power supply module stops an operational power supply of the breaker from working after receiving the signal emitted by the measuring and controlling module. As the operation power supply is automatically cut off when the control circuit of the breaker is abnormal and external actions are not needed, the phenomenon that the breaker control coil is energized for a long time and is prone to burn and damage is avoided and maintaining loads are reduced.
Description
Technical field
The present invention relates to a kind of distribution power automation terminal and improve breaker reliability method, belonging to power transmission and transformation field.
Background technology
Circuit breaker is widely used in power distribution network, is most important control and protection electrical equipment in electric power system.In actual use, breaker closing and switching winding easily occur to be energized for a long time because of auxiliary contact and mechanical problem problem to cause it to burn.Such as, point/closing coil loosens electromagnetic core displacement when causing breaker open operation, can make iron core bite, or iron core active strokes is too small, when making operation power supply, and the motionless tripping mechanism in iron core top and switching winding is energized for a long time burn.For closing coil, when breaker closing control loop is normal, the bite such as interior conducting rod, kinematic link of breaker body or because circuit breaker operation mechanism connecting plate coordinates bad, dead point is adjusted higher, cause circuit breaker to refuse to close a floodgate, combined floodgate iron core is transshipped, causes closing coil to burn out.
Often to occur in power system operation point, Burnout of Closing Coil accident.When electric equipment has an accident, if there is circuit breaker misaction because of brake division loop of circuit breaker broken string, will fault spread be made, and cause separating brake of bypassing the immediate leadership to cause large-area power-cuts, even cause power equipment to burn, the serious consequence such as fire.And during closing circuit integrity violations, although cause hazard ratio sub-gate circuit integrity violations time smaller, it also makes circuit can not normal power transmission, hampers the raising of power supply reliability.And outdoor breaker is often installed on comparatively remote field, repairing difficulty is large.So more necessary, safeguard measures are taked to breaker coil.
Summary of the invention
Goal of the invention: the present invention proposes a kind of distribution power automation terminal and improves breaker reliability method, can when circuit breaker failure, the circuitbreaker control power supply in automatic cut-off power module.
Technical scheme: the technical solution used in the present invention is a kind of distribution power automation terminal, comprise interconnective switch anomaly monitoring module and switch power module, circuit breaker on-pole switch is provided with auxiliary contact, this auxiliary contact with point/closing coil connects, switch anomaly monitoring module is connected with auxiliary contact, in on-pole switch action behavior process, detect this on-pole switch by auxiliary contact whether normally to work, when finding its operation irregularity, described switch power module stops the work of killer switch operating power under the control of switch anomaly monitoring module, switch anomaly monitoring module restarts this switching manipulation power supply after regaining control command.
As a further improvement on the present invention, described switch anomaly monitoring module, after circuit breaker on-pole switch terminates operate time, detects this on-pole switch position signalling whether normal response, to determine that it is working properly or abnormal with fixed time interval.Described switch power module adopts PWM principle power module, comprise the pwm chip with control PWM output pin (shutdown) function, the control signal input pin connecting valve anomaly monitoring module of this chip, accept the control of this switch anomaly monitoring module to cut off/to recover the power supply of killer switch operating power, the present invention has selected MC2846N as power module control chip, but be not limited to this chip, the similar control chip of other have (shutdown) pin all can be selected.
Further to improve as of the present invention, described fixed time interval comprises on-pole switch divides/closing time and extra extend the differentiation time.
A kind of raising breaker reliability method, comprises the following steps:
1) circuit breaker on-pole switch is monitored by auxiliary contact by the switch anomaly monitoring module of distribution power automation terminal, this auxiliary contact with point/closing coil connects;
2) when finding circuit breaker on-pole switch operation irregularity, switch anomaly monitoring module sends silence signal to switch power module;
3), after switch power module obtains the silence signal that switch anomaly monitoring module sends, the work of killer switch operating power is stopped;
4) after the switch anomaly monitoring module of distribution power automation terminal regains control command, restart switch power module works, and recovers killer switch operating power.
Described step 2) breaker in middle anomaly monitoring module find circuit breaker on-pole switch operation irregularity time, also can send alarm signal.
Beneficial effect: the present invention proposes a kind of distribution power automation terminal and improves breaker reliability method, the automatic shut-down operation power work when circuit breaker breaks down, without the need to foreign intervention, circuit breaker can be avoided to burn damage because coil is energized for a long time, alleviate maintenance load.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of distribution power automation terminal of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to various equivalents of the present invention has all fallen within the application's claims limited range.
A kind of distribution power automation terminal of the present invention, the basis of existing distribution power automation terminal is improved further, comprises the switch anomaly monitoring module added with switch power module cooperating.Whether working properly described switch anomaly monitoring module, after circuit breaker on-pole switch terminates operate time, detect this on-pole switch with fixed time interval, until determine that it is working properly or abnormal.Circuit breaker is provided with auxiliary contact, this auxiliary contact with point/closing coil connects.Switch anomaly monitoring module and monitoring auxiliary contact state, judge whether to occur extremely by the break-make of auxiliary contact.When circuit breaker operation irregularity, switch anomaly monitoring module transmits control signal to this chip by the control pin of MC2846N chip in described switch power module, cut off breaker operator Switching Power Supply, avoid control relay and point/damage of closing coil, switch anomaly monitoring module connects this switching manipulation power supply after regaining control command again, concurrent alarm signal request maintenance.
A kind of raising breaker reliability method, comprises the following steps:
1) by the switch anomaly monitoring module of distribution power automation terminal, circuit breaker on-pole switch is monitored;
2) when finding circuit breaker on-pole switch operation irregularity, switch anomaly monitoring module sends silence signal to switch power module, also can send alarm signal simultaneously;
3), after switch power module obtains the silence signal that switch anomaly monitoring module sends, the work of killer switch operating power is stopped;
4) after the switch anomaly monitoring module of distribution power automation terminal regains control command, restart switch power module works, and recovers killer switch operating power.
Claims (7)
1. a distribution power automation terminal, it is characterized in that, comprise interconnective switch anomaly monitoring module and switch power module, circuit breaker on-pole switch is provided with auxiliary contact, this auxiliary contact with point/closing coil connects, switch anomaly monitoring module is connected with auxiliary contact, in on-pole switch action behavior process, detect this on-pole switch by auxiliary contact whether normally to work, when finding its operation irregularity, described switch power module stops the work of killer switch operating power under the control of switch anomaly monitoring module, switch anomaly monitoring module restarts this switching manipulation power supply after regaining control command.
2. distribution power automation terminal according to claim 1; it is characterized in that; described switch anomaly monitoring module detects respective feedback signal after on-pole switch predetermined control terminates operate time; if detect this on-pole switch respective feedback signal again after waiting for fixed time interval without feedback, determine that it is working properly or abnormal.
3. distribution power automation terminal according to claim 2, is characterized in that, described fixed time interval comprises on-pole switch divides/and closing time and extra extend the differentiation time.
4. according to the distribution power automation terminal in claim 1-3 described in any one, it is characterized in that, described switch power module comprises pwm chip, the control signal input pin connecting valve anomaly monitoring module of this chip exports, and accepts the control of this switch anomaly monitoring module to stop/to recover the power supply of killer switch operating power.
5. distribution power automation terminal according to claim 4, is characterized in that, described pwm chip is MC2846N cake core.
6., for a lifting breaker reliability method for distribution power automation terminal described in claim 1, it is characterized in that, comprise the following steps:
1) circuit breaker on-pole switch is monitored by auxiliary contact by the switch anomaly monitoring module of distribution power automation terminal, this auxiliary contact with point/closing coil connects;
2) when finding circuit breaker on-pole switch operation irregularity, switch anomaly monitoring module sends silence signal to switch power module;
3), after switch power module obtains the silence signal that switch anomaly monitoring module sends, the work of killer switch operating power is stopped;
4) after the switch anomaly monitoring module of distribution power automation terminal regains control command, restart switch power module works, and recovers killer switch operating power.
7. the lifting breaker reliability method for distribution power automation terminal described in claim 1 according to claim 6, it is characterized in that, described step 2) breaker in middle anomaly monitoring module find circuit breaker on-pole switch operation irregularity time, also can send alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310158892.3A CN103269122B (en) | 2013-05-02 | 2013-05-02 | Power distribution automatic terminal and method for improving reliability of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310158892.3A CN103269122B (en) | 2013-05-02 | 2013-05-02 | Power distribution automatic terminal and method for improving reliability of breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103269122A CN103269122A (en) | 2013-08-28 |
| CN103269122B true CN103269122B (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310158892.3A Expired - Fee Related CN103269122B (en) | 2013-05-02 | 2013-05-02 | Power distribution automatic terminal and method for improving reliability of breaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684839A (en) * | 2016-12-31 | 2017-05-17 | 国网冀北电力有限公司技能培训中心 | Boundary switch protection system based on combination of PLC and fault indicator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090052897A (en) * | 2006-10-19 | 2009-05-26 | 미쓰비시덴키 가부시키가이샤 | Power converter |
| CN201477455U (en) * | 2009-07-22 | 2010-05-19 | 苏州新亚科技有限公司 | Temperature control system with detection and control of contactor faults |
| CN202435019U (en) * | 2012-01-11 | 2012-09-12 | 浙江省龙泉市电力公司 | Switch closing coil protection device |
-
2013
- 2013-05-02 CN CN201310158892.3A patent/CN103269122B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090052897A (en) * | 2006-10-19 | 2009-05-26 | 미쓰비시덴키 가부시키가이샤 | Power converter |
| CN201477455U (en) * | 2009-07-22 | 2010-05-19 | 苏州新亚科技有限公司 | Temperature control system with detection and control of contactor faults |
| CN202435019U (en) * | 2012-01-11 | 2012-09-12 | 浙江省龙泉市电力公司 | Switch closing coil protection device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684839A (en) * | 2016-12-31 | 2017-05-17 | 国网冀北电力有限公司技能培训中心 | Boundary switch protection system based on combination of PLC and fault indicator |
| CN106684839B (en) * | 2016-12-31 | 2019-03-15 | 国网冀北电力有限公司技能培训中心 | A kind of demarcation switch protection system combined based on PLC and fault detector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103269122A (en) | 2013-08-28 |
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Owner name: YE MINGBAO Free format text: FORMER OWNER: NANJING MOD SMART ENERGY CO., LTD. Effective date: 20141211 |
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Free format text: CORRECT: ADDRESS; FROM: 211103 NANJING, JIANGSU PROVINCE TO: 211199 NANJING, JIANGSU PROVINCE |
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Effective date of registration: 20141211 Address after: 211199, No. 739, Ann Sheng Road, Binjiang Economic Development Zone, Jiangning District, Jiangsu, Nanjing Applicant after: Ye Mingbao Address before: Dong Qi Road in Jiangning District of Nanjing City, Jiangsu Province, No. 33 211103 Applicant before: Nanjing Mod-Smart Energy Co., Ltd. |
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Granted publication date: 20150114 Termination date: 20190502 |