CN103490514B - 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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- CN103490514B CN103490514B CN201310426261.5A CN201310426261A CN103490514B CN 103490514 B CN103490514 B CN 103490514B CN 201310426261 A CN201310426261 A CN 201310426261A CN 103490514 B CN103490514 B CN 103490514B
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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 a kind of method that Rural Power Distribution Network earth leakage protective device monitor and forecast and fault are patrolled and examined.
Background technology
China's rural power grids are by transformation for many years and construction, earth leakage protective device (generally adding that A.C. contactor forms by earth leakage protective device) is extensively popularized, become the important defence line ensureing rural area client's Electrical Safety, but earth leakage protective device is also in the backward state of manual maintenance in actual motion management, the running status of earth leakage protective device cannot be understood in time, can not Timeliness coverage and process after earth leakage protective device tripping operation, and Xu Tai district person is to in-situ FTIR spectroelectrochemitry energising, cannot effective guarantee power supply reliability, and whether labor management pattern cannot accurately grasp earth leakage protective device intact, whether normally work.
Summary of the invention
Technical problem to be solved by this invention is, a kind of method that Rural Power Distribution Network earth leakage protective device monitor and forecast and fault are patrolled and examined is provided, adopt the method can carry out remote monitoring to the earth leakage protective device of each power distribution station, to understand the running status of earth leakage protective device in time; Can the earth leakage protective device action of 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; Fault can be carried out to earth leakage protective device to patrol and examine, with the fault of Timeliness coverage earth leakage protective device.
For solving the problems of the technologies described above, the method that Rural Power Distribution Network earth leakage protective device monitor and forecast provided by the invention and fault are patrolled and examined, it comprises the following steps:
(1), be connected by the power line of an intelligent terminal control loop by the earth leakage protective device on each transmission line circuit of power distribution station, the position signalling contact of the earth leakage protective device on each transmission line circuit of power distribution station is accessed the signal circuit of corresponding intelligent terminal, each intelligent terminal and a controlling center are passed through GPRS/CDMA wireless connections, tripped by the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Long-distance Control, close a floodgate, unlock closing operation, by the state of the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Real-Time Monitoring,
(2) the phase current I of each power distribution station Circuit Fault on Secondary Transformer, is automatically gathered by intelligent terminal
a, I
b, I
cand report to controlling center;
(3), when controlling center has monitored earth leakage protective device tripping operation, controlling center inquiry, with or without corresponding trip operation record, if having, has then been judged to be that remote operation is tripped, if do not have, is then judged to be on-the-spot tripping operation;
(4), set earth leakage protective device state-detection duration t by controlling center and be issued to each intelligent terminal, during on-the-spot tripping operation, intelligent terminal detects corresponding earth leakage protective device and whether trips in time t-close a floodgate-tripping operation, if, then judge that earth leakage protective device is as normal tripping operation, if not, then judge that earth leakage protective device is as abnormal tripping operation;
(5) by controlling center setting overload electric current I, during on-the-spot tripping operation, if corresponding intelligent terminal detects that Circuit Fault on Secondary Transformer any phase current in corresponding power distribution station is more than I, be then judged to be that overload is tripped;
(6), the earth leakage protective device on the transformer transmission line circuit of power distribution station is selected to carry out artificial remote trial tripping operation by controlling center, after controlling center issues trial jump instruction, whether the earth leakage protective device that intelligent terminal detects on corresponding transmission line circuit trips, if, then intelligent terminal sends the information of safing to controlling center, if not then intelligent terminal sends a warning message controlling center;
(7), trial jump task is set by controlling center; specify trial jump time and trial jump loop; automatically at the appointed time successively trip command is sent to the earth leakage protective device on each transmission line circuit of the power distribution station transformer of specifying; then detect corresponding earth leakage protective device by intelligent terminal and whether complete trip operation; if; then intelligent terminal sends the normal information of earth leakage protective device to controlling center; and control earth leakage protective device combined floodgate; if not, then intelligent terminal sends the information of earth leakage protective device fault to controlling center.
(8), earth leakage protective device running status intelligent decision is carried out by controlling center; controlling center starts record and protection act result according to protection; analyze current earth leakage protective device plant running situation; after protection starts; if earth leakage protective device tripping operation displacement is correct, then show earth leakage protective device normal, after protection starts; if earth leakage protective device trips unsuccessfully, then show earth leakage protective device 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 following advantage:
Wiring of the present invention is simple, applied widely, and can the running status of earth leakage protective device of each power distribution station of Real-Time Monitoring by controlling center, once find that there is earth leakage protective device tripping operation, and can Timeliness coverage processing; Can send instructions down to corresponding intelligent terminal by controlling center, corresponding earth leakage protective device action is controlled again by intelligent terminal, controlling center can be performed tripping operation, combined floodgate, unlocks the actions such as combined floodgate by Long-distance Control earth leakage protective device, when finding that there is earth leakage protective device tripping operation, can close a floodgate, to restore electricity in time by Long-distance Control earth leakage protective device; The remote operation tripping operation of earth leakage protective device, on-the-spot tripping operation, normal tripping operation, abnormal tripping operation, overload tripping operation can be distinguished, operating personnel can be processed accordingly according to different action reasons; Can be patrolled and examined the earth leakage protective device of each power distribution station by controlling center; that is successively trip command is sent to the earth leakage protective device on each transmission line circuit in each power distribution station; then detect corresponding earth leakage protective device by intelligent terminal and whether complete trip operation; with the fault of Timeliness coverage 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 customization note and inform administrative staff, with the fault message making administrative staff can learn earth leakage protective device in time, reaches the spot in time and carries out failture evacuation to earth leakage protective device.
Embodiment
Below in conjunction with embodiment, the present invention is described in more detail.
The invention provides a kind of method that Rural Power Distribution Network earth leakage protective device monitor and forecast and fault are patrolled and examined, it comprises the following steps:
(1), the power line of the control loop of one intelligent terminal with 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 the signal circuit of corresponding intelligent terminal, the auxiliary contact for outputing signal on position signalling contact i.e. earth leakage protective device, whether earth leakage protective device can be completed the information feed back of trip operation by position signalling contact to corresponding intelligent terminal, by each intelligent terminal and controlling center GPRS/CDMA wireless connections, tripped by the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Long-distance Control, close a floodgate, unlock closing operation, by the state of the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Real-Time Monitoring,
(2) the phase current I of each power distribution station Circuit Fault on Secondary Transformer, is automatically gathered by intelligent terminal
a, I
b, I
cand report to controlling center;
(3), when controlling center has monitored earth leakage protective device tripping operation, controlling center inquiry has had without corresponding trip operation record on controlling center, if having, is then judged to be that remote operation is tripped, if do not have, is then judged to be on-the-spot tripping operation;
(4), set earth leakage protective device state-detection duration t by controlling center and be issued to each intelligent terminal; during on-the-spot tripping operation; intelligent terminal detects corresponding earth leakage protective device and whether trips in time t-close a floodgate-tripping operation; if; then judge that earth leakage protective device is as normal tripping operation; if not, then judge that earth leakage protective device is as abnormal tripping operation
(5) by controlling center setting overload electric current I, during on-the-spot tripping operation, if corresponding intelligent terminal detects that Circuit Fault on Secondary Transformer any phase current in corresponding power distribution station is more than I, be then judged to be that overload is tripped;
(6), the earth leakage protective device on the transformer transmission line circuit of power distribution station is selected to carry out artificial remote trial tripping operation by controlling center, after controlling center issues trial jump instruction, whether the earth leakage protective device that intelligent terminal detects on corresponding transmission line circuit trips, whether the position signalling contact of earth leakage protective device that is intelligent terminal detects on corresponding transmission line circuit has had the information feed back of combined floodgate to intelligent terminal, if, then intelligent terminal sends the information of safing to controlling center, if not then intelligent terminal sends a warning message controlling center;
(7), by controlling center, trial jump task is set, specify trial jump time and trial jump loop, automatically at the appointed time (about zero point, user's idle) successively trip command is sent to the earth leakage protective device on each transmission line circuit of the power distribution station transformer of specifying, then detect corresponding earth leakage protective device by intelligent terminal and whether complete trip operation, if, then intelligent terminal sends the normal information of earth leakage protective device to controlling center, and control earth leakage protective device combined floodgate, if not being, then intelligent terminal sends the information of earth leakage protective device fault to controlling center.Judge that whether the wiring of on-the-spot earth leakage protective device is normal, abnormal with this, gather to administrative staff.
(8), by controlling center carry out earth leakage protective device running status intelligent decision, take main station system according to the two kinds of data starting record and protection act result (i.e. earth leakage protective device displacement) because of protection, analyze current earth leakage protective device plant running situation.After protection starts, if earth leakage protective device tripping operation displacement is correct, then show earth leakage protective device normal; After protection starts, if earth leakage protective device trips unsuccessfully, then show earth leakage protective device abnormal.
When controlling center receives the information of earth leakage protective device fault, controlling center sends customizable content note and informs administrative staff.
Below only apply preferably example with regard to the present invention and made explanation, but can not be interpreted as it is limitations on claims, structure of the present invention can have other to change, and is not limited to said structure.In a word, all various changes done in the protection range of independent claims of the present invention are all in protection scope of the present invention.
Claims (2)
1. a Rural Power Distribution Network earth leakage protective device monitor and forecast and fault method of patrolling and examining, it is characterized in that, it comprises the following steps:
(1), be connected by the power line of an intelligent terminal control loop by the earth leakage protective device on each transmission line circuit of power distribution station, the position signalling contact of the earth leakage protective device on each transmission line circuit of power distribution station is accessed the signal circuit of corresponding intelligent terminal, each intelligent terminal and a controlling center are passed through GPRS/CDMA wireless connections, tripped by the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Long-distance Control, close a floodgate, unlock closing operation, by the state of the earth leakage protective device on each transmission line circuit of each power distribution station of controlling center Real-Time Monitoring,
(2) the phase current I of each power distribution station Circuit Fault on Secondary Transformer, is automatically gathered by intelligent terminal
a, I
b, I
cand report to controlling center;
(3), when controlling center has monitored earth leakage protective device tripping operation, controlling center inquiry, with or without corresponding trip operation record, if having, has then been judged to be that remote operation is tripped, if do not have, is then judged to be on-the-spot tripping operation;
(4), set earth leakage protective device state-detection duration t by controlling center and be issued to each intelligent terminal, during on-the-spot tripping operation, intelligent terminal detects corresponding earth leakage protective device and whether trips in time t-close a floodgate-tripping operation, if, then judge that earth leakage protective device is as normal tripping operation, if not, then judge that earth leakage protective device is as abnormal tripping operation;
(5) by controlling center setting overload electric current I, during on-the-spot tripping operation, if corresponding intelligent terminal detects that Circuit Fault on Secondary Transformer any phase current in corresponding power distribution station is more than I, be then judged to be that overload is tripped;
(6), the earth leakage protective device on the transformer transmission line circuit of power distribution station is selected to carry out artificial remote trial tripping operation by controlling center, after controlling center issues trial jump instruction, whether the earth leakage protective device that intelligent terminal detects on corresponding transmission line circuit trips, if, then intelligent terminal sends the information of safing to controlling center, if not then intelligent terminal sends a warning message controlling center;
(7), trial jump task is set by controlling center, specify trial jump time and trial jump loop, automatically at the appointed time successively trip command is sent to the earth leakage protective device on each transmission line circuit of the power distribution station transformer of specifying, then detect corresponding earth leakage protective device by intelligent terminal and whether complete trip operation, if, then intelligent terminal sends the normal information of earth leakage protective device to controlling center, and control earth leakage protective device combined floodgate, if not, then intelligent terminal sends the information of earth leakage protective device fault to controlling center;
(8), earth leakage protective device running status intelligent decision is carried out by controlling center; controlling center starts record and protection act result according to protection; analyze current earth leakage protective device plant running situation; after protection starts; if earth leakage protective device tripping operation displacement is correct, then show earth leakage protective device normal, after protection starts; if earth leakage protective device trips unsuccessfully, then show earth leakage protective device abnormal.
2. Rural Power Distribution Network earth leakage protective device monitor and forecast according to claim 1 and the fault method of patrolling and examining; 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
| 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 |
| 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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| KR101090425B1 (en) * | 2009-09-28 | 2011-12-07 | 한국전력공사 | Protection Coordination system in ungrounded distribution system and its operating method |
| CN102510128A (en) * | 2011-10-27 | 2012-06-20 | 王成楷 | Intelligent electric leakage remote monitoring protector of low-voltage power grid |
| CN203086238U (en) * | 2012-11-23 | 2013-07-24 | 中国西电电气股份有限公司 | Intelligent high-voltage switch control signal conversion equipment |
| CN203086241U (en) * | 2012-12-09 | 2013-07-24 | 国家电网公司 | Electric leakage protection test monitoring system |
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