CN104730957A - Direct recognizing system for intelligent substation transmission line differential protection on/off states - Google Patents
Direct recognizing system for intelligent substation transmission line differential protection on/off states Download PDFInfo
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- CN104730957A CN104730957A CN201510114632.5A CN201510114632A CN104730957A CN 104730957 A CN104730957 A CN 104730957A CN 201510114632 A CN201510114632 A CN 201510114632A CN 104730957 A CN104730957 A CN 104730957A
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- pressing plate
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- soft pressing
- transmission line
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention discloses a direct recognizing system for intelligent substation transmission line differential protection on/off states. The direct recognizing system solves the problem that a transformer is started when a soft pressing plate is forgot to be in an on or off state in an existing intelligent substation. The direct recognizing system comprises a transmission line differential protection soft pressing plate state output modular circuit (1), a first logical AND gate circuit (11), a second logical AND gate circuit (12), a logical OR gate circuit (13), a transformer protection liquid crystal display (16) and a transformer protection device overhauling hard pressing plate (10), wherein the output end of the first logical AND gate circuit (11) is connected with the input end of the second logical AND gate circuit (12) and the antilogical input end of the logical OR gate circuit (13), the output end of the second logical AND gate circuit (12) is connected with the transformer protection liquid crystal display (16), and the output end of the logical OR gate circuit (13) is connected with the transformer protection liquid crystal display (16). The direct recognizing system eliminates the situation that the transformer is started mistakenly when the soft pressing plate is forgot to be in an on or off state.
Description
Technical field
The present invention relates to the recognition system that state of moving back is thrown in a kind of relay protection, particularly the Direct Recognition system of state of moving back is thrown in the differential protection of a kind of intelligent substation transmission line of electricity, and the present invention is applicable to the generating plant and the transformer station that are equipped with intelligent relay protection device.
Background technology
In conventional substation, relay-set is provided with hard pressing plate (namely see see and touch the connector for connection circuit be referred to as " hard pressing plate "), the function of hard pressing plate mainly contains two, one is access for transmission line of electricity or disconnect various protection circuit, and namely said throwing transmission line of electricity moves back a certain defencive function; Two is be switched on or switched off the secondary circuits such as breaker tripping and closing for transmission line of electricity.The feature of hard pressing plate has the display of obvious break-make point, being convenient to fortune inspection personnel and understanding equipment working state in time, when overhauling test, facilitating maintainer to implement corresponding safety practice.Along with the high speed development of intelligent substation, conventional substation is replaced by intelligent substation gradually.In intelligent substation, relay-set generally only arranges one " turnaround of unit " hard pressing plate, and the throwing of other defencive function and outlet function is moved back and realized by soft pressing plate.So-called " soft pressing plate " is exactly realize throwing transmission line of electricity moving back a certain defencive function or being switched on or switched off the secondary circuits such as breaker tripping and closing for transmission line of electricity by computer numerical control (CNC) signal; The control mode of digital control signal " 1 " or " 0 " is realized by protection software menu or remote monitoring background program; The display protection device directly perceived that this soft pressing plate throwing mode of moving back changes the hard pressing plate on conventional transmission lines road throws the custom of state of moving back; this do not have the throwing of obvious visible cut-off point to move back mode; for site examining and repairing work is made troubles; in maintenance process at the scene; because maintainer can not see that state is moved back in the throwing of line protection circuit on relay-set plumply; often appear at Lou to throw or leak when moving back soft pressing plate and run transmission line of electricity; cause the long-term error running of proterctive equipment, even cause the power grid accident that false tripping switch etc. is serious.
Summary of the invention
The invention provides the Direct Recognition system that state of moving back is thrown in the differential protection of a kind of intelligent substation transmission line of electricity; solve existing intelligent substation easily to appear at Lou to throw or leak when moving back soft pressing plate and run transmission line of electricity, cause the technical matters of the long-term error running of proterctive equipment.
The present invention solves above technical matters by the following technical programs:
The Direct Recognition system of state of moving back is thrown in the differential protection of a kind of intelligent substation transmission line of electricity, comprise the differential protection of transmission line of electricity soft pressing plate State-output modular circuit, first logical AND gate circuit, second logical AND gate circuit, logic sum gate circuit, line protection LCDs and line protection overhaul hard pressing plate, the soft pressing plate state output end of differential protection in the differential protection of transmission line of electricity soft pressing plate State-output modular circuit and the first input end of the first logical AND gate circuit link together, differential protection soft pressing plate state output end is connected with the soft pressing plate state display lamp of differential protection, the second input end that GOOSE TRIP in the differential protection of transmission line of electricity soft pressing plate State-output modular circuit exports soft pressing plate state output end and the first logical AND gate circuit links together, export at GOOSE TRIP and soft pressing plate state output end is connected with GOOSE TRIP exports soft pressing plate state display lamp, the 3rd input end that GOOSE start failure protection in the differential protection of transmission line of electricity soft pressing plate State-output modular circuit exports soft pressing plate state output end and the first logical AND gate circuit links together, export at GOOSE start failure protection and soft pressing plate state output end is connected with GOOSE start failure protection exports soft pressing plate state display lamp, the four-input terminal that GOOSE lock-reclosing lock in the differential protection of transmission line of electricity soft pressing plate State-output modular circuit exports soft pressing plate state output end and the first logical AND gate circuit links together, export at GOOSE lock-reclosing lock and soft pressing plate state output end is connected with GOOSE lock-reclosing lock exports soft pressing plate state display lamp, the output terminal that line protection overhauls hard pressing plate links together with the antilogical input end of the second logical AND gate circuit and the input end of logic sum gate circuit respectively, the output terminal of the first logical AND gate circuit links together with the input end of the second logical AND gate circuit and the antilogical input end of logic sum gate circuit respectively, the output terminal of the second logical AND gate circuit and the differential protection LCDs of transmission line of electricity link together, the output terminal of logic sum gate circuit and the differential protection LCDs of transmission line of electricity link together.
The output terminal of the second logical AND gate circuit is connected with transmission line of electricity differential protection running status display lamp, the output terminal of logic sum gate circuit is connected with transmission line of electricity differential protection inspecting state display lamp.
The present invention is by obvious visible state display lamp; automatically differential protection and soft pressing plate state status thereof is reacted in real time; make the throwing of transporting running status and inner soft pressing plate that inspection personnel accurately can understand the differential protective device of grasp transmission line of electricity move back situation, elimination is in time thrown because leaking, the power grid accident hidden danger that soft pressing plate causes the long-term error running of proterctive equipment to cause is moved back in leakage.
Accompanying drawing explanation
Fig. 1 is the structural representation of invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
The Direct Recognition system of state of moving back is thrown in the differential protection of a kind of intelligent substation transmission line of electricity, comprise the differential protection of transmission line of electricity soft pressing plate State-output modular circuit 1, first logical AND gate circuit 11, second logical AND gate circuit 12, logic sum gate circuit 13, line protection LCDs 16 and line protection overhaul hard pressing plate 10, the first input end of the soft pressing plate state output end 2 of the differential protection in the differential protection of transmission line of electricity soft pressing plate State-output modular circuit 1 and the first logical AND gate circuit 11 links together, differential protection soft pressing plate state output end 2 is connected with the soft pressing plate state display lamp 6 of differential protection, the second input end that GOOSE TRIP in the differential protection of transmission line of electricity soft pressing plate State-output modular circuit 1 exports soft pressing plate state output end 3 and the first logical AND gate circuit 11 links together, export at GOOSE TRIP and soft pressing plate state output end 3 is connected with GOOSE TRIP exports soft pressing plate state display lamp 7, the 3rd input end that GOOSE start failure protection in the differential protection of transmission line of electricity soft pressing plate State-output modular circuit 1 exports soft pressing plate state output end 4 and the first logical AND gate circuit 11 links together, export at GOOSE start failure protection and soft pressing plate state output end 4 is connected with GOOSE start failure protection exports soft pressing plate state display lamp 8, the four-input terminal that GOOSE lock-reclosing lock in the differential protection of transmission line of electricity soft pressing plate State-output modular circuit 1 exports soft pressing plate state output end 5 and the first logical AND gate circuit 11 links together, export at GOOSE lock-reclosing lock and soft pressing plate state output end 5 is connected with GOOSE lock-reclosing lock exports soft pressing plate state display lamp 9, the output terminal that line protection overhauls hard pressing plate 10 links together with the antilogical input end of the second logical AND gate circuit 12 and the input end of logic sum gate circuit 13 respectively, the output terminal of the first logical AND gate circuit 11 links together with the input end of the second logical AND gate circuit 12 and the antilogical input end of logic sum gate circuit 13 respectively, output terminal and the line protection LCDs 16 of the second logical AND gate circuit 12 link together, output terminal and the line protection LCDs 16 of logic sum gate circuit 13 link together.
The output terminal of the second logical AND gate circuit 12 is connected with transmission line of electricity differential protection running status display lamp 14, the output terminal of logic sum gate circuit 13 is connected with transmission line of electricity differential protection inspecting state display lamp 15.
The present invention can identify the association status of the soft pressing plate of the differential protection of transmission line of electricity intuitively; by the special picture of line protection LCDs 16, the differential protection of transmission line of electricity soft pressing plate State-output modular circuit 1 pair of soft pressing plate of differential protection is utilized to carry out associated configuration.Concrete association situation is: associated by soft to soft for differential protection pressing plate state output end 2 and differential protection pressing plate state display lamp 6; GOOSE TRIP is exported soft pressing plate state output end 3 to export soft pressing plate state display lamp 7 with GOOSE TRIP and associate; GOOSE start failure protection is exported soft pressing plate state output end 4 to export soft pressing plate state display lamp 8 with GOOSE start failure protection and associate; GOOSE lock-reclosing lock is exported soft pressing plate state output end 5 to export soft pressing plate state display lamp 9 with GOOSE lock-reclosing lock and associate.The special picture of line protection LCDs 16 can query display lamp numbering and corresponding title.
The present invention can identify transmission line of electricity differential protection operating maintenance state intuitively, four soft pressing plates of the differential protection of transmission line of electricity are after associated configuration, its state is input to the first logical AND gate circuit 11 respectively, and its output terminal inputs to again the second logical AND gate circuit 12 and logic sum gate circuit 13 respectively; After line protection overhauls the access of hard pressing plate 10, its high level dropping into position inputs to logic sum gate circuit 13, and its low level exiting position inputs to the second logical AND gate circuit 12.When four soft pressing plates all drop into, then the first logical AND gate circuit 11 exports high level; If line protection overhauls hard pressing plate 10 when exiting position, then after being input to the antilogical input end of the second logical AND gate circuit 12, upset is high level; The input end of such second logical AND gate circuit 12 is high level, and its output terminal must be high level, and transmission line of electricity differential protection running status display lamp 14 will be driven to light, and represents that the differential protective device of transmission line of electricity is in normal operating condition.And information is sent to line protection LCDs 16, play prompting fortune inspection personnel effect.When having any one to be in four soft pressing plates to exit, then the first logical AND gate circuit 11 output low level; After this low level is input to the antilogical input end of logic sum gate circuit 13, upset is high level; the output terminal of such logic sum gate circuit 13 must be high level; transmission line of electricity differential protection inspecting state display lamp 15 will be driven to light, represent that line protection is in inspecting state.And information is sent to line protection LCDs 16, play prompting fortune inspection personnel effect.When line protection overhauls hard pressing plate 10 for dropping into position in addition, also there is same result.When the transmission line of electricity differential protection inspecting state display lamp 15 of proterctive equipment is bright; can do further to judge in conjunction with four soft pressing plate state display lamps; such as the relaying configuration form of 220kV transmission line of electricity; if it is bright that GOOSE TRIP exports soft pressing plate state display lamp 7, GOOSE lock-reclosing exports soft pressing plate state display lamp 9; and GOOSE start failure protection exports soft pressing plate state display lamp 8 does not work, then can be judged as that the differential protection part of transmission line of electricity is in the maintenance model state of " this switch of transmission ".
Claims (2)
1. the differential Direct Recognition system protecting throwing to move back state of intelligent substation transmission line of electricity, comprise the differential protection of transmission line of electricity soft pressing plate State-output modular circuit (1), first logical AND gate circuit (11), second logical AND gate circuit (12), logic sum gate circuit (13), line protection LCDs (16) and line protection overhaul hard pressing plate (10), the soft pressing plate state output end (2) of differential protection on the differential protection of transmission line of electricity soft pressing plate State-output modular circuit (1) links together with the first input end of the first logical AND gate circuit (11), differential protection soft pressing plate state output end (2) is connected with the soft pressing plate state display lamp (6) of differential protection, GOOSE TRIP on the differential protection of transmission line of electricity soft pressing plate State-output modular circuit (1) exports soft pressing plate state output end (3) and links together with the second input end of the first logical AND gate circuit (11), export at GOOSE TRIP and soft pressing plate state output end (3) is connected with GOOSE TRIP exports soft pressing plate state display lamp (7), GOOSE start failure protection on the differential protection of transmission line of electricity soft pressing plate State-output modular circuit (1) exports soft pressing plate state output end (4) and links together with the 3rd input end of the first logical AND gate circuit (11), export at GOOSE start failure protection and soft pressing plate state output end (4) is connected with GOOSE start failure protection exports soft pressing plate state display lamp (8), GOOSE lock-reclosing lock on the differential protection of transmission line of electricity soft pressing plate State-output modular circuit (1) exports soft pressing plate state output end (5) and links together with the four-input terminal of the first logical AND gate circuit (11), export at GOOSE lock-reclosing lock and soft pressing plate state output end (5) is connected with GOOSE lock-reclosing lock exports soft pressing plate state display lamp (9), the output terminal that line protection overhauls hard pressing plate (10) links together with the antilogical input end of the second logical AND gate circuit (12) and the input end of logic sum gate circuit (13) respectively, the output terminal of the first logical AND gate circuit (11) links together with the input end of the second logical AND gate circuit (12) and the antilogical input end of logic sum gate circuit (13) respectively, the output terminal of the second logical AND gate circuit (12) and the differential protection LCDs (16) of transmission line of electricity link together, the output terminal of logic sum gate circuit (13) and the differential protection LCDs (16) of transmission line of electricity link together.
2. the Direct Recognition system of state of moving back is thrown in the differential protection of a kind of intelligent substation transmission line of electricity according to claim 1; it is characterized in that; the output terminal of the second logical AND gate circuit (12) is connected with transmission line of electricity differential protection running status display lamp (14), the output terminal of logic sum gate circuit (13) is connected with transmission line of electricity differential protection inspecting state display lamp (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510114632.5A CN104730957B (en) | 2015-03-16 | 2015-03-16 | The Direct Recognition system for state of moving back is thrown in the differential protection of intelligent substation transmission line of electricity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510114632.5A CN104730957B (en) | 2015-03-16 | 2015-03-16 | The Direct Recognition system for state of moving back is thrown in the differential protection of intelligent substation transmission line of electricity |
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| CN104730957A true CN104730957A (en) | 2015-06-24 |
| CN104730957B CN104730957B (en) | 2017-07-18 |
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| CN105743219A (en) * | 2016-02-18 | 2016-07-06 | 国电南瑞科技股份有限公司 | Uniform description method for operating states of safe and stable emergency control devices |
| CN111211619A (en) * | 2020-01-22 | 2020-05-29 | 广东电网有限责任公司 | Reclosing switch on-off state monitoring method |
| CN117294004A (en) * | 2023-09-13 | 2023-12-26 | 国网江苏省电力有限公司淮安供电分公司 | Intelligent identification system and method for relay protection operation mode of transformer substation |
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| CN101499649A (en) * | 2008-05-19 | 2009-08-05 | 河南省电力公司 | Networking bus bar protecting method based on GOOSE mode |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105743219A (en) * | 2016-02-18 | 2016-07-06 | 国电南瑞科技股份有限公司 | Uniform description method for operating states of safe and stable emergency control devices |
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| CN111211619A (en) * | 2020-01-22 | 2020-05-29 | 广东电网有限责任公司 | Reclosing switch on-off state monitoring method |
| CN117294004A (en) * | 2023-09-13 | 2023-12-26 | 国网江苏省电力有限公司淮安供电分公司 | Intelligent identification system and method for relay protection operation mode of transformer substation |
| CN117294004B (en) * | 2023-09-13 | 2024-04-09 | 国网江苏省电力有限公司淮安供电分公司 | Intelligent identification system and method for relay protection operation mode of transformer substation |
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| CN104730957B (en) | 2017-07-18 |
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