CN101752909B - Remote checking method of operation circuit - Google Patents
Remote checking method of operation circuit Download PDFInfo
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- CN101752909B CN101752909B CN2010103003268A CN201010300326A CN101752909B CN 101752909 B CN101752909 B CN 101752909B CN 2010103003268 A CN2010103003268 A CN 2010103003268A CN 201010300326 A CN201010300326 A CN 201010300326A CN 101752909 B CN101752909 B CN 101752909B
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Abstract
The invention relates to a remote checking method of an operation circuit. An operator transmits a remote check command to a relay protective device from a remote check center and records the time for transmitting the command; the relay protective device switches to the remote check state, executes corresponding operations according to the received command type, simultaneously uploads switching value information to the remote check center and stores the switching value information to a database; the remote check center comprehensively judges a check result according to the information uploaded by the relay protective device and sends alarm information if the check result is abnormal; and the relay protective device switches to the normal work state after the remote check is finished. By the method, the relay protective checking efficiency is greatly improved, the usability of the equipment can be improved and the overhaul power-failure time is shortened; meanwhile, the invention can avoid the long-journey rushing of relay protection persons during periodic inspection, reduces the check method, and has better generalization value.
Description
Technical field
The present invention relates to the long-range calibration technology of electric power secondary system, be specifically related to the relaying protection system remote checking method of operation circuit of conventional type transformer station low-voltage grade.
Background technology
Operation circuit is a circuit of electric primary equipment being operated control.The conventional substation operation circuit comprises circuit breaker trip loop/closing circuit and anti-jump loop.Trip(ping) circuit and closing circuit are realized the control of circuit breaker jumping/combined floodgate, and anti-jump loop prevents repeatedly " jumping is closed " phenomenon generation of circuit breaker.Each loop all is made up of relay, contact, cable connection, and circuit connection correctness, insulation property etc. are the problems that must pay close attention in the running.
Operation circuit is owing to comprise some relays and the cable that is connected each equipment; in actual motion; the interval of electric power system fault did not take place for a long time for some; relaying protection was never moved; but whether the operation circuit insulation property descend, whether circuit connection becomes flexible, when breaking down reliably situation operations staff such as tripping circuit breaker or reclosing can't learn; present way is according to inspection procedure, termly operation circuit is tested.According to the secondary circuit drawing, manual detection is carried out in the loop during test, because the artificial potential safety hazard of introducing of routine test also happens occasionally as mistake accident such as bump, influenced the overhaul efficiency and the security of operation of electric power system like this with testing equipment.After check finishes, also need former state is recovered in the loop, the earth connection etc. of dismantling, check needs the time spent long, and workload is big.
Summary of the invention
The purpose of this invention is to provide a kind of relaying protection opens into leaving the loop remote checking method, to solve the problem that cycle is long, workload is big, efficient is not high that existing method of calibration is on the spot brought.
The step of remote checking method of operation circuit of the present invention is as follows:
(1) operations staff's mind-set protective relaying device from long-range verification is assigned " starting long-range verification " order;
(2) after protective relaying device receives starting command, put " long-range verification " sign, and switch to long-range verification state;
(3) the mind-set protective relaying device is assigned long-range check command from long-range verification, and record order issues constantly in database;
(4) protective relaying device is carried out corresponding operating according to the command type at long-range verification center, simultaneously with the switching value information uploading to long-range verification center;
(5) long-range verification center is judged according to the informix of protective relaying device feedback and is provided check results, if the decision operation loop has unusually, then sends warning information;
When (6) long-range verification was finished, protective relaying device switched to normal operating conditions according to the finish command at long-range verification center.
Described long-range check command type comprises closing loop verification and anti-jump loop verification.
When long-range check command is the closing loop verification; what long-range verification center parsing protective relaying device was uploaded opens into the displacement infomational message; and extract arresting constantly of message; with this constantly and in the database storage check command issue and carry out time difference calculating constantly, whether judge closing loop according to the time difference normal.
The unusual basis for estimation of described closing loop is: it is unusual that long-range verification center does not receive in the setting-up time that after sending trip signal the circuit breaker trip positional information is then alarmed trip(ping) circuit, and it is unusual not receive that the breaker closing positional information is then alarmed closing circuit in sending the order back setting-up time that closes a floodgate.
When long-range check command is the anti-jump loop verification, long-range verification center detect in real time the circuit breaker position that send on the protective device open into, judge to have or not " jumping is closed " phenomenon, thereby whether the check anti-jump loop intact.
Judge whether intact criterion is described anti-jump loop: begin in the time that finishes from the anti-jump loop verification, jump the position and open, judge that promptly anti-jump loop is unusual into twice above displacement arranged.
Method of the present invention is not changing protective relaying device hardware, do not increase electric power secondary system loop equipment and extra wiring, is fully guaranteeing under the prerequisite of the fail safe of system and stability, realized the long-range verification of operation circuit, only need on protective device, increase the long-range verification software module of operation circuit, finish check command and receive, resolve, carry out function; In background monitoring system, increase long-range verification center picture, increase long-range check command at each protective device and issue function and can realize by the engineering configuration.Method of the present invention can be widely used in the relay protection device of electric power system low pressure series; adopt remote checking method of operation circuit of the present invention; relaying protection verification efficient is improved greatly; equipment availability improves, the maintenance interruption duration reduces; continuing in the time of simultaneously can removing periodic inspection from, guarantor person is long-distance to hurry back and forth; reduce inspection cost, have good popularization value.
Description of drawings
Fig. 1 is the protective relaying device block diagram of the embodiment of the invention;
Fig. 2 is the long-range checking process figure of the closing loop of the embodiment of the invention.
Embodiment
The present invention is achieved in that protective relaying device still adopts existing hardware; as shown in Figure 1; protective relaying device comprises inverter, analog quantity input module, CPU, open into/leave loop and long-range verification module; this long-range verification module is connected with long-range verification center, open into/leave the loop respectively by open into/leave return cable to link to each other with the breaker operator loop with position of the switch module.The present invention makes full use of intelligent, station level communication interface and the backstage of protective relaying device CPU and carries out the mass data function of exchange; the long-range verification module of operation circuit is obtained order and is sent data by the station level communication interface of device, thus the information interaction at realization and long-range verification center.
Long-range verification center is a station server, and the long-range verification software of relaying protection is installed.This software is developed on the basis of automatic monitoring system of transformer substation software, reuse existing database design and communication construction, the human-computer interaction interface that provides comprises the device name and the figure of the long-range verification of full station needs, by the interface of software, the operations staff can carry out long-range check command to each device and issue operation.Long-range verification finishes, and shows check results on the picture.Long-range verification center can be placed in the station, and for the unattended operation transformer station of remote districts, long-range verification center also can be placed on a distant place, as control centre etc.Ready-made communication network is shared in the communication of long-range verification center and protective device, does not need additionally to lay communication line.
Remote checking method of operation circuit of the present invention is as follows:
(1) operations staff's mind-set protective relaying device from long-range verification is assigned " starting long-range verification " order;
(2) after protective relaying device receives starting command, put " long-range verification " sign, and switch to long-range verification state;
(3) the mind-set protective relaying device is assigned long-range check command from long-range verification, and record order issues constantly in database;
(4) protective relaying device is carried out corresponding operating according to the command type at long-range verification center, simultaneously with the switching value information uploading to long-range verification center;
(5) long-range verification center is judged according to the informix of protective relaying device feedback and is provided check results, if the decision operation loop has unusually, then sends warning information;
When (6) long-range verification was finished, protective relaying device switched to normal operating conditions according to the finish command at long-range verification center.
Long-range check command type comprises closing loop verification and anti-jump loop verification, specifies with the long-range example that is verified as of closing loop and anti-jump loop respectively below.
The inspection process figure of closing loop as shown in Figure 2, method is: operations staff's mind-set protective relaying device from long-range verification sends closing loop check command 1, and will order 1 to issue and constantly be recorded in the database, after protective relaying device receives this check command 1 and parsing, drive protection tripping operation exit relay, the tripping operation outlet closing of contact, whole trip(ping) circuit energising, circuit breaker tripping; Open into becoming 1 by 0 jumping position on the protective relaying device; protective relaying device in time will be opened and deliver to long-range verification center on the displacement information; long-range verification center is resolved and is opened into the displacement infomational message; and extract arresting constantly of message; with this constantly with database in the check command 1 stored issue and carry out the time difference constantly and calculate; if long-range verification center is not received the circuit breaker trip positional information and is become 1 by 0 in the setting-up time after sending trip signal; it is unusual then to alarm trip(ping) circuit; if in setting-up time, receive the circuit breaker trip positional information; the mind-set protective relaying device sends long-range check command 2 in the long-range verification; and will order 2 to issue and constantly be recorded in the database; after protective relaying device receives this check command 2 and parsing; drive the combined floodgate exit relay; close a floodgate and export the closing of contact; the closing circuit energising; circuit breaker closes; open into becoming 0 by 1 jumping position on the protective relaying device; closing the position opens into becoming 1 by 0; protective relaying device in time will be opened and deliver to long-range verification center on the displacement information; long-range verification center is resolved and is opened into the displacement infomational message; and extract arresting constantly of message; with this constantly with database in the check command 2 stored issue and carry out the time difference constantly and calculate; if long-range verification center does not receive that the breaker closing positional information becomes 1 by 0 in sending the order back setting-up time that closes a floodgate; it is unusual then to alarm closing circuit; become 1 if in setting-up time, receive the breaker closing positional information by 0, then finish the long-range verification of these breaker tripping and closing.
The method of calibration of anti-jump loop is: after starting the anti-jump loop verification; after long-range verification center sends the order of closing a floodgate; send trip signal under the situation that does not have to remove at the closing pulse of protective relaying device; trip this moment latching relay (TBJ) the current coil excitation and remain to the circuit breaker auxiliary contact by its first auxiliary contact and open; the potential winding of tripping operation latching relay is kept by closing pulse by another chromaffin body point; other two auxiliary contacts of TBJ disconnect closing circuit; make and unlikelyly behind the circuit breaker trip close a floodgate once more; only remaining closing pulse removes; potential winding could be connected closing circuit after cutting off the power supply, reach to prevent repeatedly? jump-close? the purpose that phenomenon takes place.The circuit breaker position that send on the real-time monitoring and protecting device in long-range verification center open into, judgement has or not? jump-close? phenomenon, thus whether the check anti-jump loop is intact.Concrete criterion is: begin in the time that finishes from the anti-jump loop verification, jump the position and open into having twice and above displacement, judge that promptly anti-jump loop is unusual.
In addition; protective device detects the breaker tripping and closing position in real time and opens into state; when jump the position open into and close the position and open into all not having and lasting 3s or all to have lasting 1s to alarm control loop unusual; and with the long-range verification of self check direct information center; long-range verification center detect control loop unusual after, alarm, the prompting operations staff checks control loop; and the long-range verification operation of locking simultaneously, the long-range verification failure of avoiding control loop to cause unusually.
The inventive method is not changing protective relaying device hardware, do not increase electric power secondary system loop equipment and extra wiring, is fully guaranteeing under the prerequisite of the fail safe of system and stability, realized the long-range verification of operation circuit, only need on protective device, increase the long-range verification software module of operation circuit, finish check command and receive, resolve, carry out function; Develop long-range verification center software, realize the long-range check command of various protective devices is issued function.Method of the present invention can be widely used in the relay protection device of electric power system low pressure series, adopts remote checking method of operation circuit of the present invention, and relaying protection verification efficient is improved greatly, and equipment availability improves, the maintenance interruption duration reduces.Continuing in the time of simultaneously can removing periodic inspection from, guarantor person is long-distance to hurry back and forth, and reduces inspection cost, has good popularization value.
Claims (6)
1. remote checking method of operation circuit is characterized in that, the step of this method is as follows:
(1) operations staff's mind-set protective relaying device from long-range verification is assigned " starting long-range verification " order;
(2) after protective relaying device receives " starting long-range verification " order, put " long-range verification " sign, and switch to long-range verification state;
(3) the mind-set protective relaying device is assigned long-range check command from long-range verification, and record order issues constantly in database;
(4) protective relaying device is carried out corresponding operating according to the command type at long-range verification center, simultaneously with the switching value information uploading to long-range verification center;
(5) long-range verification center is judged according to the informix of protective relaying device feedback and is provided check results, if the decision operation loop has unusually, then sends warning information;
When (6) long-range verification was finished, protective relaying device switched to normal operating conditions according to the finish command at long-range verification center.
2. remote checking method of operation circuit according to claim 1 is characterized in that: described long-range check command type comprises closing loop verification and anti-jump loop verification.
3. remote checking method of operation circuit according to claim 2; it is characterized in that: when long-range check command is the closing loop verification; what long-range verification center parsing protective relaying device was uploaded opens into the displacement infomational message; and extract arresting constantly of message; with this constantly and in the database storage check command issue and carry out time difference calculating constantly, whether judge closing loop according to the time difference normal.
4. remote checking method of operation circuit according to claim 3, it is characterized in that, the unusual basis for estimation of described closing loop is: it is unusual that long-range verification center does not receive in the setting-up time that after sending trip signal the circuit breaker trip positional information is then alarmed trip(ping) circuit, and it is unusual not receive that the breaker closing positional information is then alarmed closing circuit in sending the order back setting-up time that closes a floodgate.
5. remote checking method of operation circuit according to claim 2; it is characterized in that: when long-range check command is the anti-jump loop verification; long-range verification center detect in real time the circuit breaker position that send on the protective relaying device open into; judge to have or not " jumping-close " phenomenon, thereby whether the check anti-jump loop is intact.
6. remote checking method of operation circuit according to claim 5, it is characterized in that: judge whether intact criterion is anti-jump loop: begin in the time that finishes from the anti-jump loop verification, jump the position and open, judge that promptly anti-jump loop is unusual into twice above displacement arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103003268A CN101752909B (en) | 2010-01-15 | 2010-01-15 | Remote checking method of operation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103003268A CN101752909B (en) | 2010-01-15 | 2010-01-15 | Remote checking method of operation circuit |
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| Publication Number | Publication Date |
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| CN101752909A CN101752909A (en) | 2010-06-23 |
| CN101752909B true CN101752909B (en) | 2011-08-17 |
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| CN2010103003268A Expired - Fee Related CN101752909B (en) | 2010-01-15 | 2010-01-15 | Remote checking method of operation circuit |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558466A (en) * | 2013-10-29 | 2014-02-05 | 国家电网公司 | Method for on-line whole group logic calibration of 10kV protecting device |
| CN104198926A (en) * | 2014-05-29 | 2014-12-10 | 国家电网公司 | Anti-trip loop test device for breaker and control method thereof |
| CN104062531A (en) * | 2014-07-22 | 2014-09-24 | 国家电网公司 | Long-distance verification method, device and system for relaying protection |
| CN105353249B (en) * | 2015-11-20 | 2019-08-16 | 国网上海市电力公司 | Relay protection automatic checkout system and method for calibration |
| CN105471113B (en) * | 2016-01-29 | 2017-12-05 | 山东鲁能智能技术有限公司 | The Multistage Control distribution terminal faulty action preventing remote control circuit and method returned to school with contact |
| CN113270849A (en) * | 2021-05-18 | 2021-08-17 | 鲁西工业装备有限公司 | Low-voltage protection calibration device and calibration method |
| CN113253038B (en) * | 2021-06-28 | 2021-09-10 | 广东电网有限责任公司中山供电局 | Online monitoring device and method for comprehensive alarm unit of GIS equipment of transformer substation |
| CN113533886B (en) * | 2021-07-20 | 2023-12-26 | 河南源网荷储电气研究院有限公司 | Relay protection device on-off reliability test method and device |
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Granted publication date: 20110817 Termination date: 20190115 |