CN202712819U - Protection system capable of realizing breaker failure triggering relevant trips of interconnecting transformer - Google Patents
Protection system capable of realizing breaker failure triggering relevant trips of interconnecting transformer Download PDFInfo
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- CN202712819U CN202712819U CN201220453326.6U CN201220453326U CN202712819U CN 202712819 U CN202712819 U CN 202712819U CN 201220453326 U CN201220453326 U CN 201220453326U CN 202712819 U CN202712819 U CN 202712819U
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Abstract
The utility model discloses a protection system capable of realizing breaker failure triggering relevant trips of an interconnecting transform. The protection system analyzes the reasons that: if the circuit breaker on any one side is in failure, not all relevant trips of the circuit breakers on the power supply side are triggered, and the 220kV side breaker failure protection logic of the interconnecting transformer is changed, and the function of the breaker failure triggering relevant trips for interconnecting transformer protection is truly realized, and the technical regulation requirements is achieved, and guarantees on safe and stable operation of the power grid are supplied.
Description
Technical field
The utility model relates to electric power system and technical field of relay protection, is specifically related to a kind of malfunctioning jumping protection system that realizes system interconnection transformer.
Background technology
The area that China's part electric network composition relative thin is weak, system interconnection transformer is still being brought into play very important effect in " Power Exchange " process.In case system interconnection transformer itself goes wrong or the tripping of either side mains switch, will cause large-area power-cuts, even system break-down, the serious accidents such as device damage.Clear in " relaying protection specialty emphasis implement require " that State Grid Corporation of China issues: " during the breaker failure of 220kV and above transformer; except answering the adjacent whole circuit breakers of the malfunctioning circuit breaker of tripping, also answer this transformer of tripping to connect the circuit breaker of other side power supplys ".The system risk that causes for taking precautions against malfunctioning rebound road imperfection needs the malfunctioning rebound road technique of transformer is improved.
The utility model content
For solving the deficiencies in the prior art; the utility model provides a kind of protection system that realizes the malfunctioning jumping of system interconnection transformer; improve connection and become 220kV side breaker fail protection logic and relevant secondary circuit, realized system interconnection transformer protection " malfunctioning jumping " function fully.
The technical scheme that the invention for solving the technical problem adopts is: a kind of protection system that realizes the malfunctioning jumping of system interconnection transformer, comprise actuating section, time component and outlet element, described actuating section comprises the bus isolation switch, remove press off again lock loop, malfunctioning startup loop, electric parameters protection action circuit and first with door, second and, not gate, described time component comprises time delays device T1, time delays device T2, time delays device T3, and described outlet element comprises bus, bus circuit breaker, system interconnection transformer three side circuit breakers; Described bus isolation switch, remove press off again lock loop, malfunctioning startup loop be connected to first with the input of door, described releasing press off again lock loop, malfunctioning startup loop be connected to second with the input of door, described electric parameters protection action circuit be connected to first with the input of door and the input of not gate, the output of described not gate be connected in second with the door input, described first with the door output is connected with time delays device T2 with time delays device T1, described second and output be connected in time delays device T3; Described time delays device T1 is connected with bus, and described time delays device T2 is connected with the bus circuit breaker, and described time delays device T3 is connected with system interconnection transformer three side circuit breakers.More important electric power system in 110kV or 220kV electric pressure; for guaranteeing power supply reliability; bus equipment generally adopts the double bus scheme mode; and under the double bus scheme mode; certain breaker failure that connects when bus or electric parameters occur when unusual, provide a malfunctioning startup contact to circuit-breaker failure portection equipment by the malfunctioning jumping protective device (breaker protection) of this circuit or element.After this device detects a certain malfunctioning startup junction closure; start the malfunctioning outlet logic of this circuit breaker connected bus section, busbar section; through malfunctioning composite voltage locking; " malfunctioning outlet short time delay T1 " tripping bus connection switch of adjusting by the time element; all circuit breakers that this bus of " malfunctioning outlet long delay T2 " tripping connects, " failure protection T3 start-up time " tripping system interconnection transformer three sides.
Further; in order to prevent single condition judgment breaker failure; and because of protection contact bite does not return or mistake is bumped, mistake energising etc. causes error starting; described malfunctioning startup loop comprises that route protection starts loop and current judgement element; described route protection starts the loop and is connected with door with door, second with first respectively, and described current judgement element is connected with door with door, second with first respectively.Do not return detect the protection exit relay action of fault element when described malfunctioning startup loop after, and still exist short circuit by the current judgement checking elements in the protection range of protecting at fault element, it is malfunctioning to judge that then circuit breaker exists.
The beneficial effects of the utility model are: a kind of protection system that realizes the malfunctioning jumping of system interconnection transformer that the utility model adopts; can not realize fully that to system interconnection transformer the either side breaker failure joins the reason of jumping each mains side circuit breaker and analyzes; improved system interconnection transformer either side breaker fail protection logic; really realized the function of system interconnection transformer protection " malfunctioning jumping "; reached the requirement of technical regulation, for safety, the stable operation of electrical network provides guarantee.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is structure principle chart of the present utility model.
Fig. 2 is electric hookup of system interconnection transformer.
Embodiment
See figures.1.and.2, a kind of protection system that realizes the malfunctioning jumping of system interconnection transformer of the present utility model, comprise actuating section 1, time component 2 and outlet element 3, described actuating section 1 comprises bus isolation switch 11, remove and press off again lock loop 12, malfunctioning startup loop 13, electric parameters protection action circuit 14, and first and the door 15, second with the door 16, not gate 17, described time component 2 comprises time delays device T1, time delays device T2, time delays device T3, described outlet element 3 comprises bus 31, bus circuit breaker 32, system interconnection transformer three side circuit breakers 33; Described bus isolation switch 11, remove and press off again lock loop 12, malfunctioning startup loop 13 be connected to first with door 15 input, described releasing presses off lock loop 12 again, malfunctioning startup loop 13 be connected to second with door 16 input, described electric parameters protection action circuit 14 be connected to first with the input of door 15 and the input of not gate 17, the output of described not gate 17 be connected in second with door 16 input, described first is connected with time delays device T2 with time delays device T1 with door 15 output, and described second and 16 output is connected in time delays device T3; Described time delays device T1 is connected with bus 31, and described time delays device T2 is connected with bus circuit breaker 32, and described time delays device T3 is connected with system interconnection transformer three side circuit breakers 33.More important electric power system in 110kV or 220kV electric pressure; for guaranteeing power supply reliability; bus equipment generally adopts the double bus scheme mode; and under the double bus scheme mode; certain breaker failure that connects when bus or electric parameters occur when unusual, provide a malfunctioning startup contact to circuit-breaker failure portection equipment by the malfunctioning jumping protective device (breaker protection) of this circuit or element.Native system starts malfunctioning condition and comprises: route protection starts the loop start contact, the current judgement element is judged three-phase current I(A, B, C)〉ISQD (malfunctioning startup definite value), remove and press off again that lock loop is open, electric parameters protection action circuit starts, the action of bus isolation switch.Native system detects wherein 4 conditions satisfy after; start the malfunctioning outlet logic of this circuit breaker connected bus section, busbar section; through malfunctioning composite voltage locking; " malfunctioning outlet short time delay T1 " tripping bus connection switch of adjusting by the time element; all circuit breakers that this bus of " malfunctioning outlet long delay T2 " tripping connects, " failure protection T3 start-up time " tripping system interconnection transformer three sides.
Further; in order to prevent single condition judgment breaker failure; and because of protection contact bite does not return or mistake is bumped, mistake energising etc. causes error starting; described malfunctioning startup loop 13 comprises that route protection starts loop 131 and current judgement element 132; described route protection starts the loop and is connected 16 with door 15, second with door with first respectively, and described current judgement element is connected with door 16 with door 15, second with first respectively.Do not return detect the protection exit relay action of fault element when described malfunctioning startup loop 131 after, and be checked through in the protection range of fault element protection by current judgement element 132 and still exist short circuit, it is malfunctioning to judge that then circuit breaker exists.
The specific works process is as follows: by an electric hookup of Fig. 2 system interconnection transformer as can be known; system interconnection transformer 220kV side breaker fail protection is by bus mode centralized configuration; this can cause failure protection can not correct decision be malfunctioning by the bus protection action launching or malfunctioning by system interconnection transformer protection action launching; when 8207 circuit breaker tripping, failure protection just can not output contact with system interconnection transformer side circuit breaker fast trip.Therefore, the utility model starts malfunctioning loop from system interconnection transformer 220kV circuit breaker and solves by changing the failure protection logic.The below is take system interconnection transformer A, 220kV side 8207 malfunctioning switches as example, and minute 2 kinds of situations describe.
1) fault that in system interconnection transformer A protection range, is short-circuited; the quick acting of system interconnection transformer protection system; send the instruction of jumping system interconnection transformer three side switches; except 8207 circuit breaker trippings, the equal reliable trip of other both sides circuit breakers, the 220kV bus provides short circuit current 6 this moments through 8207 circuit breakers to the fault point; 4 conditions that 8207 breaker fail protections need all satisfy; the failure protection action through predetermined time-delay, is tripped relative breaker.
2) when the 220kV bus breaks down, although bus protection meeting quick acting, with other circuit breaker trips on the fault bus.But because of 8207 circuit breaker trippings, the 330kV system still provides fault current by No. 1 system interconnection transformer to fault bus, not action of system interconnection transformer electric parameters protection.At this moment, 4 conditions that 8207 breaker fail protections need all satisfy, and the failure protection action starts system interconnection transformer protection " malfunctioning jumping " loop through the short time delay output contact, reliably with the other both sides of system interconnection transformer circuit breaker trip.
The above is preferred embodiment of the present utility model, and the utility model is not limited to above-mentioned execution mode, as long as it reaches technique effect of the present utility model with identical means, all should belong to protection range of the present utility model.
Claims (2)
1. protection system that realizes the malfunctioning jumping of system interconnection transformer, comprise actuating section (1), time component (2) and outlet element (3), it is characterized in that: described actuating section (1) comprises bus isolation switch (11), remove and press off again lock loop (12), malfunctioning startup loop (13), electric parameters protection action circuit (14), and first and the door (15), second with the door (16), not gate (17), described time component (2) comprises time delays device T1(21), time delays device T2(22), time delays device T3(23), described outlet element (3) comprises bus (31), bus circuit breaker (32), system interconnection transformer three side circuit breakers (33); Described bus isolation switch (11), remove and press off again lock loop (12), malfunctioning startup loop (13) be connected to first with the door (15) input, described releasing presses off lock loop (12) again, malfunctioning startup loop (13) be connected to second with the door (16) input, described electric parameters protection action circuit (14) be connected to first with the input of door (15) and the input of not gate (17), the output of described not gate (17) be connected in second with the door (16) input, described first with the output and time delays device T1(21 of door (15)) be connected with time delays device T2(22 and be connected, described second and the output of (16) be connected in time delays device T3(23); Described time delays device T1(21) be connected described time delays device T2(22 with bus (31)) be connected described time delays device T3(23 with bus circuit breaker (32)) be connected with system interconnection transformer three side circuit breakers (33).
2. a kind of protection system that realizes the malfunctioning jumping of system interconnection transformer according to claim 1; it is characterized in that: described malfunctioning startup loop (13) comprises that route protection starts loop (131) and current judgement element (132); described route protection starts loop (131) and is connected (16) with door (15), second with door with first respectively, and described current judgement element (132) is connected with door (16) with door (15), second with first respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220453326.6U CN202712819U (en) | 2012-09-06 | 2012-09-06 | Protection system capable of realizing breaker failure triggering relevant trips of interconnecting transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220453326.6U CN202712819U (en) | 2012-09-06 | 2012-09-06 | Protection system capable of realizing breaker failure triggering relevant trips of interconnecting transformer |
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| CN202712819U true CN202712819U (en) | 2013-01-30 |
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| CN201220453326.6U Expired - Lifetime CN202712819U (en) | 2012-09-06 | 2012-09-06 | Protection system capable of realizing breaker failure triggering relevant trips of interconnecting transformer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734117A (en) * | 2014-11-28 | 2015-06-24 | 内蒙古电力勘测设计院有限责任公司 | Failure protection method for breaker of transformer substation |
| CN106129971A (en) * | 2016-08-12 | 2016-11-16 | 许继集团有限公司 | A kind of busbar protective device chopper dual failure fault partition method and system |
| CN106655124A (en) * | 2016-12-30 | 2017-05-10 | 南华大学 | Failure protection algorithm and apparatus for line circuit breaker |
| CN106786404A (en) * | 2016-11-22 | 2017-05-31 | 南京南瑞继保电气有限公司 | Circuit-breaker failure portection equipment and method under a kind of 3/2nds modes of connection |
| CN109713646A (en) * | 2018-11-30 | 2019-05-03 | 南京国电南自电网自动化有限公司 | Bus failure protection switching method based on other female disconnecting link sideband main transformer |
-
2012
- 2012-09-06 CN CN201220453326.6U patent/CN202712819U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734117A (en) * | 2014-11-28 | 2015-06-24 | 内蒙古电力勘测设计院有限责任公司 | Failure protection method for breaker of transformer substation |
| CN104734117B (en) * | 2014-11-28 | 2018-12-28 | 内蒙古电力勘测设计院有限责任公司 | A kind of breaker fail protection method of substation |
| CN106129971A (en) * | 2016-08-12 | 2016-11-16 | 许继集团有限公司 | A kind of busbar protective device chopper dual failure fault partition method and system |
| CN106129971B (en) * | 2016-08-12 | 2019-07-23 | 许继集团有限公司 | A kind of dual failure fault partition method of busbar protective device breaker and system |
| CN106786404A (en) * | 2016-11-22 | 2017-05-31 | 南京南瑞继保电气有限公司 | Circuit-breaker failure portection equipment and method under a kind of 3/2nds modes of connection |
| CN106786404B (en) * | 2016-11-22 | 2018-09-11 | 南京南瑞继保电气有限公司 | Circuit-breaker failure portection equipment under 3/2nds modes of connection of one kind and method |
| CN106655124A (en) * | 2016-12-30 | 2017-05-10 | 南华大学 | Failure protection algorithm and apparatus for line circuit breaker |
| CN109713646A (en) * | 2018-11-30 | 2019-05-03 | 南京国电南自电网自动化有限公司 | Bus failure protection switching method based on other female disconnecting link sideband main transformer |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |