CN103490514A - Rural power distribution grid electricity leakage protection device monitoring, controlling and fault detecting method - Google Patents
Rural power distribution grid electricity leakage protection device monitoring, controlling and fault detecting method Download PDFInfo
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- CN103490514A CN103490514A CN201310426261.5A CN201310426261A CN103490514A CN 103490514 A CN103490514 A CN 103490514A CN 201310426261 A CN201310426261 A CN 201310426261A CN 103490514 A CN103490514 A CN 103490514A
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Abstract
The invention discloses a rural power distribution grid electricity leakage protection device monitoring, controlling and fault detecting method. According to the method, phase currents of secondary sides of transformers in power distribution rooms can be automatically collected through an intelligent terminal, then a tripping type can be judged according to the situations that whether tripping operation records exist and whether tripping is finished in a defined time period, and according to the magnitude of the phase currents in tripping, a tripping instruction is sent to electricity leakage protection devices through a control main station to detect whether the electricity leakage protection devices can work normally, and the control main station analyzes the operation situations of the current electricity leakage protection device according to protection starting records and protection motion results. According to the method, the electric leakage protection devices of the power distribution rooms can be monitored remotely and can be remotely controlled to operate, operation reasons of the electric leakage protection devices can be distinguished, and fault detection can be carried out on the electricity leakage protection devices.
Description
Technical field
The present invention relates to the method that the monitoring of a kind of Rural Power Distribution Network earth leakage protective device and control and fault are patrolled and examined.
Background technology
China's rural power grids are by transformation and construction for many years, earth leakage protective device (generally by earth leakage protective device, adding that A.C. contactor forms) is extensively universal, become the important defence line that ensures rural area client's Electrical Safety, but in actual motion management to the earth leakage protective device backward state in manual maintenance also, can't understand in time the running status of earth leakage protective device, can not find in time and process after the earth leakage protective device tripping operation, and Xu Tai district person is to on-the-spot Power resumption, can't the effective guarantee power supply reliability, and whether the labor management pattern can't accurately be grasped earth leakage protective device intact, whether work.
Summary of the invention
Technical problem to be solved by this invention is, the method that provides the monitoring of a kind of Rural Power Distribution Network earth leakage protective device and control and fault to patrol and examine, adopt the method to carry out remote monitoring to the earth leakage protective device of each power distribution station, to understand in time the running status of earth leakage protective device; Earth leakage protective device action that can each power distribution station of Long-distance Control, to restore electricity in time; Can distinguish the action reason of earth leakage protective device, with handled easily, personnel process accordingly; Can carry out fault to earth leakage protective device and patrol and examine, to find in time the fault of earth leakage protective device.
For solving the problems of the technologies described above, the method that Rural Power Distribution Network earth leakage protective device provided by the invention monitoring and control and fault are patrolled and examined, it comprises the following steps:
(1), by an intelligent terminal control loop, the power line of the earth leakage protective device on each transmission line circuit of power distribution station is connected, the position signalling contact of the earth leakage protective device on each transmission line circuit of power distribution station is accessed to the signal circuit of corresponding intelligent terminal, each intelligent terminal and a controlling center are passed through to the GPRS/CDMA wireless connections, by the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Long-distance Control, tripped, close a floodgate, the release closing operation, state by the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Real-Time Monitoring,
(2), by intelligent terminal, automatically gather the phase current I of each power distribution station Circuit Fault on Secondary Transformer
a, I
b, I
cand report to controlling center;
(3), when controlling center has monitored earth leakage protective device when tripping operation, the controlling center inquiry has or not corresponding trip operation record, if having, is judged to be the remote operation tripping operation, if do not have, is judged to be on-the-spot tripping operation;
(4), by controlling center, set earth leakage protective device state-detection duration t and be issued to each intelligent terminal, during on-the-spot tripping operation, whether intelligent terminal detects corresponding earth leakage protective device and trips in time t-close a floodgate-tripping operation, if, judge that earth leakage protective device is as normal tripping operation, if not, judge that earth leakage protective device is as abnormal tripping operation;
(5) set the overload electric current I by controlling center, during on-the-spot tripping operation, if corresponding intelligent terminal detects any phase current of corresponding power distribution station Circuit Fault on Secondary Transformer, surpass I, be judged to be the overload tripping operation;
(6), by controlling center, select the earth leakage protective device on the transformer transmission line circuit of power distribution station to carry out artificial long-range test tripping operation, after controlling center issues the trial jump instruction, whether the earth leakage protective device that intelligent terminal detects on corresponding transmission line circuit trips, if, intelligent terminal sends the information of safing and arrives controlling center, if not, the intelligent terminal controlling center that sends a warning message;
(7), by controlling center, the trial jump task is set; specify trial jump time and trial jump loop; automatically at the appointed time the earth leakage protective device on each transmission line circuit of the power distribution station transformer of appointment is sent to trip command successively; then detect corresponding earth leakage protective device by intelligent terminal and whether complete trip operation; if; intelligent terminal sends the normal information of earth leakage protective device to controlling center; and control earth leakage protective device and close a floodgate; if not, intelligent terminal sends the information of earth leakage protective device fault to controlling center.
(8), by controlling center, carry out earth leakage protective device running status intelligent decision; controlling center starts record and protection the result of the action according to protection; analyze current earth leakage protective apparatus ruuning situation; after protection starts; if earth leakage protective device tripping operation displacement is correct, show that earth leakage protective device is normal, after protection starts; if earth leakage protective device trips unsuccessfully, show that earth leakage protective device is abnormal.
As improvement, when controlling center receives the information of earth leakage protective device fault, controlling center, by the short message content of customization, sends note and informs administrative staff.
After adopting above method, the present invention compared with prior art, has advantages of following:
Wiring of the present invention is simple, applied widely, and the running status of earth leakage protective device that can each power distribution station of Real-Time Monitoring by controlling center, once find that there is the earth leakage protective device tripping operation, can find in time and process; By controlling center, can send instructions down to corresponding intelligent terminal, control corresponding earth leakage protective device action by intelligent terminal again, make controlling center to carry out the actions such as tripping operation, combined floodgate, release combined floodgate by the Long-distance Control earth leakage protective device, when finding that there is the earth leakage protective device tripping operation, can close a floodgate by the Long-distance Control earth leakage protective device, to restore electricity in time; Can distinguish the remote operation tripping operation of earth leakage protective device, on-the-spot tripping operation, normal tripping operation, abnormal tripping operation, overload tripping operation, make operating personnel to process accordingly according to different action reasons; By controlling center, can be patrolled and examined the earth leakage protective device of each power distribution station; that is to say the earth leakage protective device on each transmission line circuit in each power distribution station is sent to trip command successively; then detect corresponding earth leakage protective device by intelligent terminal and whether complete trip operation; to find in time the fault of earth leakage protective device, can fix a breakdown in time.
In addition; when controlling center receives the information of earth leakage protective device fault; controlling center can send the customization note and inform administrative staff, so that administrative staff can learn the fault message of earth leakage protective device in time, reaches the spot in time earth leakage protective device is carried out to the fault eliminating.
Embodiment
Below in conjunction with embodiment, the present invention is described in more detail.
The invention provides the method that the monitoring of a kind of Rural Power Distribution Network earth leakage protective device and control and fault are patrolled and examined, it comprises the following steps:
(1), the power line of the earth leakage protective device on each transmission line circuit of the control loop of one intelligent terminal and power distribution station is connected, the position signalling contact of the earth leakage protective device on each transmission line circuit of power distribution station is accessed to the signal circuit of corresponding intelligent terminal, the position signalling contact is the auxiliary contact for output signal on earth leakage protective device namely, the information that whether earth leakage protective device can be completed to the tripping operation action by the position signalling contact feeds back to corresponding intelligent terminal, by each intelligent terminal and controlling center GPRS/CDMA wireless connections, by the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Long-distance Control, tripped, close a floodgate, the release closing operation, state by the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Real-Time Monitoring,
(2), by intelligent terminal, automatically gather the phase current I of each power distribution station Circuit Fault on Secondary Transformer
a, I
b, I
cand report to controlling center;
(3), monitored earth leakage protective device when tripping operation when controlling center, the controlling center inquiry has on controlling center without corresponding trip operation record, if having, is judged to be the remote operation tripping operation, if do not have, is judged to be on-the-spot tripping operation;
(4), by controlling center, set earth leakage protective device state-detection duration t and be issued to each intelligent terminal; during on-the-spot tripping operation; whether intelligent terminal detects corresponding earth leakage protective device and trips in time t-close a floodgate-tripping operation; if; judge that earth leakage protective device is as normal tripping operation; if not, judge that earth leakage protective device is as abnormal tripping operation
(5) set the overload electric current I by controlling center, during on-the-spot tripping operation, if corresponding intelligent terminal detects any phase current of corresponding power distribution station Circuit Fault on Secondary Transformer, surpass I, be judged to be the overload tripping operation;
(6), by controlling center, select the earth leakage protective device on the transformer transmission line circuit of power distribution station to carry out artificial long-range test tripping operation, after controlling center issues the trial jump instruction, whether the earth leakage protective device that intelligent terminal detects on corresponding transmission line circuit trips, that is to say whether the position signalling contact that intelligent terminal detects the earth leakage protective device on corresponding transmission line circuit has had the information of combined floodgate to feed back to intelligent terminal, if, intelligent terminal sends the information of safing and arrives controlling center, if not, the intelligent terminal controlling center that sends a warning message;
(7), by controlling center, the trial jump task is set, specify trial jump time and trial jump loop, automatically at the appointed time (about zero point, user's idle) earth leakage protective device on each transmission line circuit of the power distribution station transformer of appointment is sent to trip command successively, then detect corresponding earth leakage protective device by intelligent terminal and whether complete trip operation, if, intelligent terminal sends the normal information of earth leakage protective device to controlling center, and control earth leakage protective device and close a floodgate, if be not, intelligent terminal sends the information of earth leakage protective device fault to controlling center.Whether the wiring that judges on-the-spot earth leakage protective device with this is normal, undesiredly gathers to administrative staff.
(8), by controlling center, carry out earth leakage protective device running status intelligent decision, take main station system according to start two kinds of data of record and protection the result of the action (being the earth leakage protective device displacement) because of protection, analyze current earth leakage protective apparatus ruuning situation.After protection starts, if earth leakage protective device tripping operation displacement is correct, show that earth leakage protective device is normal; After protection starts, if earth leakage protective device trips unsuccessfully, show that earth leakage protective device is abnormal.
When controlling center receives the information of earth leakage protective device fault, controlling center sends the customizable content note and informs administrative staff.
Below only with regard to the present invention, apply preferably example and made explanation, but can not be interpreted as it is limitations on claims, structure of the present invention can have other variations, is not limited to said structure.In a word, all various variations of doing in the protection range of independent claims of the present invention are all in protection scope of the present invention.
Claims (2)
1. the method that Rural Power Distribution Network earth leakage protective device monitoring and control and fault are patrolled and examined, is characterized in that, it comprises the following steps:
(1), by an intelligent terminal control loop, the power line of the earth leakage protective device on each transmission line circuit of power distribution station is connected, the position signalling contact of the earth leakage protective device on each transmission line circuit of power distribution station is accessed to the signal circuit of corresponding intelligent terminal, each intelligent terminal and a controlling center are passed through to the GPRS/CDMA wireless connections, by the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Long-distance Control, tripped, close a floodgate, the release closing operation, state by the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Real-Time Monitoring,
(2), by intelligent terminal, automatically gather the phase current I of each power distribution station Circuit Fault on Secondary Transformer
a, I
b, I
cand report to controlling center;
(3), when controlling center has monitored earth leakage protective device when tripping operation, the controlling center inquiry has or not corresponding trip operation record, if having, is judged to be the remote operation tripping operation, if do not have, is judged to be on-the-spot tripping operation;
(4), by controlling center, set earth leakage protective device state-detection duration t and be issued to each intelligent terminal, during on-the-spot tripping operation, whether intelligent terminal detects corresponding earth leakage protective device and trips in time t-close a floodgate-tripping operation, if, judge that earth leakage protective device is as normal tripping operation, if not, judge that earth leakage protective device is as abnormal tripping operation;
(5) set the overload electric current I by controlling center, during on-the-spot tripping operation, if corresponding intelligent terminal detects any phase current of corresponding power distribution station Circuit Fault on Secondary Transformer, surpass I, be judged to be the overload tripping operation;
(6), by controlling center, select the earth leakage protective device on the transformer transmission line circuit of power distribution station to carry out artificial long-range test tripping operation, after controlling center issues the trial jump instruction, whether the earth leakage protective device that intelligent terminal detects on corresponding transmission line circuit trips, if, intelligent terminal sends the information of safing and arrives controlling center, if not, the intelligent terminal controlling center that sends a warning message;
(7), by controlling center, the trial jump task is set; specify trial jump time and trial jump loop; automatically at the appointed time the earth leakage protective device on each transmission line circuit of the power distribution station transformer of appointment is sent to trip command successively; then detect corresponding earth leakage protective device by intelligent terminal and whether complete trip operation; if; intelligent terminal sends the normal information of earth leakage protective device to controlling center; and control earth leakage protective device and close a floodgate; if not, intelligent terminal sends the information of earth leakage protective device fault to controlling center.
(8), by controlling center, carry out earth leakage protective device running status intelligent decision; controlling center starts record and protection the result of the action according to protection; analyze current earth leakage protective apparatus ruuning situation; after protection starts; if earth leakage protective device tripping operation displacement is correct, show that earth leakage protective device is normal, after protection starts; if earth leakage protective device trips unsuccessfully, show that earth leakage protective device is abnormal.
2. the method that Rural Power Distribution Network earth leakage protective device according to claim 1 monitoring and control and fault are patrolled and examined; it is characterized in that: when controlling center receives the information of earth leakage protective device fault; controlling center, by the short message content of customization, sends note and informs administrative staff.
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Cited By (8)
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| CN105226618A (en) * | 2015-09-23 | 2016-01-06 | 国网山东桓台县供电公司 | Earth leakage protective device and leakage switch centralized control method |
| CN105990820A (en) * | 2015-03-18 | 2016-10-05 | 南华大学 | Short-circuit fault tripping method for improving power supply reliability of rural power grid |
| CN107976603A (en) * | 2017-11-21 | 2018-05-01 | 国网山东省电力公司淄博供电公司 | Portable concentrated gas meter box earth detector |
| CN109031023A (en) * | 2018-08-16 | 2018-12-18 | 杭州华春科技有限公司 | A kind of current leakage detection system with tripping catch function |
| CN112421782A (en) * | 2020-11-20 | 2021-02-26 | 云南电网有限责任公司临沧供电局 | Leakage protection switch on-line monitoring device |
| CN113030715A (en) * | 2021-03-02 | 2021-06-25 | 国网浙江省电力有限公司湖州供电公司 | Residual current operated circuit breaker performance detection device and fault judgment method |
| CN114389369A (en) * | 2022-03-23 | 2022-04-22 | 广东承能电力安装有限公司 | Intelligent monitoring system and method for electric room load |
| CN116760191A (en) * | 2023-08-15 | 2023-09-15 | 国网山西省电力公司晋中供电公司 | Power load debugging method and device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113030715A (en) * | 2021-03-02 | 2021-06-25 | 国网浙江省电力有限公司湖州供电公司 | Residual current operated circuit breaker performance detection device and fault judgment method |
| CN113030715B (en) * | 2021-03-02 | 2024-03-26 | 国网浙江省电力有限公司湖州供电公司 | Residual current operated circuit breaker performance detection device and fault judgment method |
| CN114389369A (en) * | 2022-03-23 | 2022-04-22 | 广东承能电力安装有限公司 | Intelligent monitoring system and method for electric room load |
| CN114389369B (en) * | 2022-03-23 | 2022-07-05 | 广东承能电力安装有限公司 | Intelligent monitoring system and method for electric room load |
| CN116760191A (en) * | 2023-08-15 | 2023-09-15 | 国网山西省电力公司晋中供电公司 | Power load debugging method and device |
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