CN103094987A - Identification and isolation method of through faults of coal mine power supply system - Google Patents
Identification and isolation method of through faults of coal mine power supply system Download PDFInfo
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- CN103094987A CN103094987A CN2013100626896A CN201310062689A CN103094987A CN 103094987 A CN103094987 A CN 103094987A CN 2013100626896 A CN2013100626896 A CN 2013100626896A CN 201310062689 A CN201310062689 A CN 201310062689A CN 103094987 A CN103094987 A CN 103094987A
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Abstract
The invention provides an identification and isolation method of through faults of a coal mine power supply system, and belongs to a relay protection method of the coal mine power supply system. The steps of the method include that (1) sub intelligent substations are built in substations on the ground and underground, a station level with an area centralized control center is built on the ground to serve as a common station level of all the sub intelligent substations, and the common station level coordinates and controls the sub intelligent substations; (2) a host in the centralized control center collects and comprehensively judges fault information sent from protection and measurement and control modules of the sub intelligent substations to achieve identification and isolation of the faults, displays fault sections and fault types on a displayer and sends out fault alarms; and (3) the sub intelligent substations collect or samples system voltage and current data of each branch circuit, and calculate and judge the various fault types and abnormal operation states, and the sub intelligent substations send out trip orders to breakers at the fault sections to achieve isolation of the various types of faults. The method has the advantages of being easy to carry out, precise in judge and high in reliability.
Description
Technical field
The present invention relates to a kind of Coal Mine Power Distribution System relay protecting method, particularly a kind of passing through property of Coal Mine Power Distribution System Fault Identification and partition method.
Background technology
The same electric pressure of Coal Mine Power Network will be passed through a plurality of electric substations, because supply lines is short out, operational mode differs greatly, short circuit current is excessive etc., causes switch fast tripping protection definite values at different levels to distinguish, and causing the Coal Mine Power Network overstep tripping is universal phenomenon.Electric power system does not cause adjusting of the superior and the subordinate's protection to be difficult to coordinate to the protection time limit of colliery electric network source inlet wire very much, causes the coalmine high-voltage power network single phase leak current fault that multistage passing through occurs.The intelligent substation technology has realized sharing of full station information, for thoroughly solving passing through property of the multistage statements based on collusion system of Coal Mine Power Network fault, provides new opportunity.
Summary of the invention
technical problem:the problem existed for above-mentioned prior art, the invention provides a kind of passing through property of Coal Mine Power Distribution System Fault Identification and partition method, and multiple the passing through property fault that solves Coal Mine Power Distribution System is the problem of overstep tripping and earth leakage protective non-selectivity especially.
technical scheme:to achieve these goals, the technical solution used in the present invention is: a kind of passing through property of Coal Mine Power Distribution System Fault Identification and partition method, be that fault section isolation are comprehensively judged by collecting unified processing of each sub-intelligent substation information in station level District integrated control center, comprise the following steps:
(1) each transformer station of ground and down-hole builds up respectively sub-intelligent substation, builds up the public station level as each sub-intelligent substation with the station level at District integrated control center on ground, and public station level is coordinated to control to each sub-intelligent substation;
(2) described District integrated control center has Fault Identification and isolation features, the District integrated control center comprises centralized control center's main frame and display, centralized control center's main frame is collected the fault message sent on the protection and measurement and control module of each sub-intelligent substation, comprehensively judge, realize identification and the isolation of fault, analysis result is shown and carries out topology coloring at background interface, show fault section and fault type and can send fault alarm on display;
(3) each sub-intelligent substation collection or sampling system voltage and each branch current data, calculate and judge and identify various fault types and irregular operating state, and then carry out following steps;
(4) the protection measure and control device of each sub-intelligent substation, the fault type identified according to it and irregular operating state organize the GOOSE message up sending to the District integrated control central host;
(5) centralized control center's main frame is uploaded according to the protection measure and control device of each sub-intelligent substation fault type and irregular operating state information, judge the section of guilty culprit by fault section location software, protection measure and control device to the sub-intelligent substation at fault section place issues protection action " permissions " signal, issues protection to the protection measure and control device of other sub-intelligent substations and moves " locking " signal;
(6) the sub-intelligent substation of receiving protection action " permission " signal issues trip signal to the circuit breaker of fault section head end, the circuit that tripping is corresponding, thus realize identification and the isolation of all kinds fault.
[0005]beneficial effect, owing to having adopted such scheme, based on the shared bottom data in the full station of colliery intelligent substation, take full advantage of the fault message of each branch road, overcome the deficiency that traditional microcomputer protecting device can only be used the fault message self obtained, colliery passing through property power supply trouble identification and the partition method of this invention, can identify various passing through property faults and irregular operating state, effectively overcome the difficult problem that the superior and the subordinate's protection definite value can't coordinate, computing is convenient, reliability is high, Coal Mine Power Distribution System short circuit override tripping and earth leakage protective non-selectivity problem have particularly thoroughly been solved, effectively reduced the scope that colliery has a power failure, Coal Mine Power Distribution System reliability of operation and fail safe have been improved.Multiple the passing through property fault that has thoroughly solved Coal Mine Power Distribution System is overstep tripping and earth leakage protective non-selectivity problem especially, has reached purpose of the present invention.
Advantage: the architecture based on District integrated control formula colliery intelligent substation and shared bottom data; cooperation by intelligent power transformation substation and centralized control center's protected host; realize the identification of fault and the fault section location in system scope; guaranteed the selectivity of protection action; thoroughly solved passing through property of Coal Mine Power Distribution System power supply trouble problem; solved the common special powerup issue in colliery; the vertical non-selectivity problem of short circuit override tripping and earth leakage protective, have simple, accuracy of judgement, characteristics that reliability is high.
The accompanying drawing explanation
Fig. 1 is that the present invention solves passing through property of Coal Mine Power Distribution System Fault Identification and partition method flow chart.
The structure chart that Fig. 2 is passing through property of Coal Mine Power Distribution System Fault Identification of the present invention and isolation scheme.
The protection logic that Fig. 3 is the sub-intelligent substation protection of the present invention measure and control device.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1: in Fig. 1, the present invention includes following steps:
(1) each transformer station of ground and down-hole builds up respectively sub-intelligent substation, build up the public station level as each sub-intelligent substation with the station level at District integrated control center on ground, public station level is coordinated to control to each sub-intelligent substation, each sub-intelligent substation protection measure and control device completes the identification of fault, the judgement of centralized control center's protected host completion system scope internal fault section, the structure of the identification of passing through property power supply trouble and partition method is as shown in Figure 2;
(2) described District integrated control center has Fault Identification and isolation features, the District integrated control center comprises centralized control center's main frame and display, centralized control center's main frame is collected the fault message sent on the protection and measurement and control module of each sub-intelligent substation, comprehensively judge, realize identification and the isolation of fault, analysis result is shown and carries out topology coloring at background interface, show fault section and fault type and can send fault alarm on display;
(3) each sub-intelligent substation collection or sampling system voltage and each branch current data, calculate and judge and identify various fault types and irregular operating state, and then carry out following steps;
(4) the protection measure and control device of each sub-intelligent substation, the fault type identified according to it and irregular operating state organize the GOOSE message up sending to the District integrated control central host;
Described GOOSE is abbreviated as Generic Object Oriented Substation Event, and the meaning of Chinese is: general OO transformer substation case;
(5) centralized control center's protected host is uploaded according to each sub-intelligent substation protection measure and control device fault type and irregular operating state information; carry out fault section location by fault section location software; protection measure and control device to the sub-intelligent substation at fault section place issues protection action " permissions " signal, issues protection to other sub-intelligent substations protection measure and control devices and moves " locking " signal.The judgement of centralized control center's protected host completion system scope internal fault section, do not affect each sub-intelligent substation independently fault judgement and relay protection function, this is by being configured in the protection logic realization on wall protection measure and control device, as shown in Figure 3, " with regard to earth signal " is " 0 " when normal, while breaking down, be " 1 ", " time delay T " is not then " 0 " at delay time T, time delay is " 1 " after finishing, " locking " is " 1 " when " action allow " signal of receiving from centralized control center's protected host, while receiving " action locking " signal, be " 0 ", after of short duration provisional fault disappears or after the recovery of protective device error starting, " with regard to earth signal " becomes " 0 " from " 1 ", even receive " action allows " signal that centralized control center issues, the protection measure and control device can not make the protection action yet, " action allows " of visible main frame or " action locking " signal location that just auxiliary each wall protection measure and control device completes full ore deposit many intelligent substations scope internal fault section, guarantee vertical selectivity of protection, but can not affect the result of wall protection measure and control device to the fault judgement.If this protection measure and control device is not received " action allows " signal, " but with regard to earth signal " is " 1 ", and delay time T finishes, the switch failure of subordinate's protection is described, now " time delay T " becomes " 1 ", wall protection measure and control device protection logic output " 1 ", now this protection is as the backup protection excision fault of subordinate's protection;
(6) the sub-intelligent substation of receiving " action allow " signal issued from centralized control center's protected host issues trip signal to the intelligent terminal of fault section head end; the switch that the intelligent terminal tripping is corresponding; thereby guarantee the selectivity of protection action, realize identification and the isolation of multistage through fault.
The present invention is for the various through faults of Coal Mine Power Distribution System especially overstep tripping and earth leakage protective non-selectivity problem; architecture based on District integrated control formula colliery intelligent substation and shared bottom data; cooperation by sub-intelligent substation and centralized control center's protected host; realize the identification of fault and the fault section location in system scope; guaranteed the selectivity of protection action; thoroughly solve passing through property of Coal Mine Power Distribution System power supply trouble problem, there are simple, accuracy of judgement, characteristics that reliability is high.
Claims (1)
1. passing through property of a Coal Mine Power Distribution System Fault Identification and partition method, it is characterized in that: Fault Identification and partition method, be that fault section isolation are comprehensively judged by collecting unified processing of each sub-intelligent substation information in station level District integrated control center, comprise the following steps:
(1) each transformer station of ground and down-hole builds up respectively sub-intelligent substation, builds up the public station level as each sub-intelligent substation with the station level at District integrated control center on ground, and public station level is coordinated to control to each sub-intelligent substation;
(2) described District integrated control center has Fault Identification and isolation features, the District integrated control center comprises centralized control center's main frame and display, centralized control center's main frame is collected the fault message sent on the protection and measurement and control module of each sub-intelligent substation, comprehensively judge, realize identification and the isolation of fault, analysis result is shown and carries out topology coloring at background interface, show fault section and fault type and can send fault alarm on display;
(3) each sub-intelligent substation collection or sampling system voltage and each branch current data, calculate and judge and identify various fault types and irregular operating state, and then carry out following steps;
(4) the protection measure and control device of each sub-intelligent substation, the fault type identified according to it and irregular operating state organize the GOOSE message up sending to the District integrated control central host;
(5) centralized control center's main frame is uploaded according to the protection measure and control device of each sub-intelligent substation fault type and irregular operating state information, judge the section of guilty culprit by fault section location software, protection measure and control device to the sub-intelligent substation at fault section place issues protection action " permissions " signal, issues protection to the protection measure and control device of other sub-intelligent substations and moves " locking " signal;
(6) the sub-intelligent substation of receiving protection action " permission " signal issues trip signal to the circuit breaker of fault section head end, the circuit that tripping is corresponding, thus realize identification and the isolation of all kinds fault.
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| CN201310062689.6A CN103094987B (en) | 2013-02-28 | 2013-02-28 | Identification and isolation method of through faults of coal mine power supply system |
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| CN201310062689.6A CN103094987B (en) | 2013-02-28 | 2013-02-28 | Identification and isolation method of through faults of coal mine power supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441479A (en) * | 2013-08-28 | 2013-12-11 | 徐州润泽电气有限公司 | Override-trip-preventing and electricity-leakage-protecting no-selectivity method for coal mine power supply system |
| CN108347032A (en) * | 2018-03-08 | 2018-07-31 | 山东山矿测控技术有限公司 | A method of preventing protective relaying maloperation work |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005043712A2 (en) * | 2003-11-03 | 2005-05-12 | Abb Research Ltd | Automated intelligent configuration tool for power system protection and control and monitoring devices |
| CN2759026Y (en) * | 2004-08-03 | 2006-02-15 | 神华集团有限责任公司 | Power supply system for mine |
| CN202633922U (en) * | 2012-03-29 | 2012-12-26 | 张作龙 | Device for preventing override trip of coal mine power network |
-
2013
- 2013-02-28 CN CN201310062689.6A patent/CN103094987B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005043712A2 (en) * | 2003-11-03 | 2005-05-12 | Abb Research Ltd | Automated intelligent configuration tool for power system protection and control and monitoring devices |
| CN2759026Y (en) * | 2004-08-03 | 2006-02-15 | 神华集团有限责任公司 | Power supply system for mine |
| CN202633922U (en) * | 2012-03-29 | 2012-12-26 | 张作龙 | Device for preventing override trip of coal mine power network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441479A (en) * | 2013-08-28 | 2013-12-11 | 徐州润泽电气有限公司 | Override-trip-preventing and electricity-leakage-protecting no-selectivity method for coal mine power supply system |
| CN108347032A (en) * | 2018-03-08 | 2018-07-31 | 山东山矿测控技术有限公司 | A method of preventing protective relaying maloperation work |
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| CN103094987B (en) | 2015-01-21 |
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Application publication date: 20130508 Assignee: Xuzhou Runze Electric Co., Ltd. Assignor: China University of Mining & Technology Contract record no.: 2016320000127 Denomination of invention: Identification and isolation method of through faults of coal mine power supply system Granted publication date: 20150121 License type: Exclusive License Record date: 20160331 |
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