CN104836211A - Bus fault locking system and locking method - Google Patents
Bus fault locking system and locking method Download PDFInfo
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- CN104836211A CN104836211A CN201410850018.0A CN201410850018A CN104836211A CN 104836211 A CN104836211 A CN 104836211A CN 201410850018 A CN201410850018 A CN 201410850018A CN 104836211 A CN104836211 A CN 104836211A
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- transformer station
- overcurrent protective
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Abstract
The invention discloses a bus fault locking system and a locking method. A locking system is disposed on a connecting line between a 100KV transformer station and a 220KV transformer station. The 110KV transformer station is provided with at least two main transformers, which are respectively connected with a 110KV bus by a switch 3DK. The 110KV bus is respectively connected with two lines of the 220KV transformer station, which are respectively serially connected with a switch 2DK and a switch 5DK, respectively by a switch 1DK and an EF line, a switch 4DK and a GH line. The switch 1DK and the switch 4DK are provided with overcurrent protection devices having directions, and the directions face the 110 KV bus. The two overcurrent protection devices and the backup power automatic switching device used as the secondary automatic device of the transformer station can be disposed in the main control chamber. The method is simple, the operation is convenient, and the safe operation of the power grid can be guaranteed.
Description
Technical field
What the present invention relates to is a kind of block sytem and blocking method of busbar fault of transformer station, belongs to power safety technique field.
Background technology
In prior art, under the different mode of connection of the 110kV bus of 110kV transformer station, if issue raw busbar fault to non-internal bridge without mother stock on-off mode, and prepared auto restart is without locking, produce intense impact to electrical network, more serious consequence occurs, and is power grid security hidden danger.
As shown in Figure 1; 110kV side is internal bridge connection; without 110kV mother stock switch; 110kV bus does not configure bus differential protecting, if A stands, 110kV bus C section breaks down, 220kV transformer station 110kV switch 2DK protection act; switch trip; the action of 110kV circuit backup power automatic switching, disconnect 1DK, close 4DK; because being combined on fault bus; the action of 220kV transformer station 110kV switch 5DK distance three section protection, 5DK trips, in this case; this locking prepared auto restart; do not allow its action, otherwise very large on system shock impact, be very unfavorable for power grid operation.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art existence, and provide a kind of method simple, block sytem and the blocking method of the busbar fault of electric power netting safe running can be ensured.
The object of the invention is to have come by following technical solution, a kind of block sytem of busbar fault, it is installed in the connection line of 110KV transformer station and 220KV transformer station, wherein have at least two main transformers to be connected on 110KV bus respectively by switch 3DK in 110KV transformer station, described 110KV bus is serially connected with on the circuit of 2DK and 5DK respectively respectively by switch 1DK and EF circuit, the two-way of 4DK and GH connection in 220KV transformer station; Described switch 1DK and 4DK be the directive overcurrent protective device of mounting strap respectively, and 110KV bus is pointed in direction; Two described overcurrent protective devices and one are all installed in master-control room as the backup auto-activating device of substation secondary automatics.
A kind of blocking method utilizing the block sytem of above-mentioned busbar fault, described blocking method is: under the different mode of connection of the 110kV bus of 110kV transformer station, the directive overcurrent protective device 21n/RCS-9621C of switch 1DK mounting strap of 110KV circuit EF, i.e. inlet wire two; The directive overcurrent protective device 11n/RCS-9611C of switch 4DK mounting strap of circuit GH, i.e. inlet wire one; Bus is pointed in direction, when 110KV bus C section breaks down, offside line switching 2DK tripping, at this moment circuit EF dead electricity, 110KV bus dead electricity, decompression, when 110KV bus loss of pressure time, due to the overcurrent protection also action of the overcurrent protective device 21n/RCS-9621C of 1DK, overcurrent protective device 21n/RCS-9621C also can output its action node 21CD4, is carried out the node 326 of conducting backup auto-activating device 51n/ RCS-9651C by node 51RD15, thus locking prepared auto restart; Backup auto-activating device 51n/ RCS-9651C, as the secondary automatics of transformer station, is installed in master-control room with overcurrent protective device 21n/RCS-9621C and overcurrent protective device 11n/RCS-9611C; As long as the node 326 of backup auto-activating device 51n/ RCS-9651C has signal conduction, backup auto-activating device is just by locking, and the action of locking mother stock prepared auto restart, prevents from coinciding with fault; When inlet wire EF breaks down, offside switch 2DK tripping, this side overcurrent protective device 21n/RCS-9621C is failure to actuate; not locking backup auto-activating device 51n/ RCS-9651C, now prepared auto restart action, 1DK tripping; and the extension wire switch 4DK that closes, power supply in holding station.
It is simple that the present invention has method, easy to operate, can ensure the features such as electric power netting safe running.
Accompanying drawing explanation
Fig. 1 is 110KV transformer station 110KV side of the present invention is non-internal bridge connection schematic diagram.
Fig. 2 is the locking principle winding diagram of substation bus fault of the present invention.
Embodiment
Below in conjunction with accompanying drawing, detailed introduction is done to the present invention: shown in Fig. 1,2, the block sytem of a kind of busbar fault of the present invention, it is installed in the connection line of 110KV transformer station and 220KV transformer station, wherein have at least two main transformers to be connected on 110KV bus respectively by switch 3DK in 110KV transformer station, described 110KV bus is serially connected with on the circuit of 2DK and 5DK respectively respectively by switch 1DK and EF circuit, the two-way of 4DK and GH connection in 220KV transformer station; Described switch 1DK and 4DK be the directive overcurrent protective device of mounting strap respectively, and 110KV bus is pointed in direction; Two described overcurrent protective devices and one are all installed in master-control room as the backup auto-activating device of substation secondary automatics.
A kind of blocking method utilizing the block sytem of above-mentioned busbar fault, described blocking method is: under the different mode of connection of the 110kV bus of 110kV transformer station, the directive overcurrent protective device 21n/RCS-9621C of switch 1DK mounting strap of 110KV circuit EF, i.e. inlet wire two; The directive overcurrent protective device 11n/RCS-9611C of switch 4DK mounting strap of circuit GH, i.e. inlet wire one; Bus is pointed in direction, when 110KV bus C section breaks down, offside line switching 2DK tripping, at this moment circuit EF dead electricity, 110KV bus dead electricity, decompression, when 110KV bus loss of pressure time, due to the overcurrent protection also action of the overcurrent protective device 21n/RCS-9621C of 1DK, overcurrent protective device 21n/RCS-9621C also can output its action node 21CD4, is carried out the node 326 of conducting backup auto-activating device 51n/ RCS-9651C by node 51RD15, thus locking prepared auto restart; Backup auto-activating device 51n/ RCS-9651C, as the secondary automatics of transformer station, is installed in master-control room with overcurrent protective device 21n/RCS-9621C and overcurrent protective device 11n/RCS-9611C; As long as the node 326 of backup auto-activating device 51n/ RCS-9651C has signal conduction, backup auto-activating device is just by locking, and the action of locking mother stock prepared auto restart, prevents from coinciding with fault; When inlet wire EF breaks down, offside switch 2DK tripping, this side overcurrent protective device 21n/RCS-9621C is failure to actuate; not locking backup auto-activating device 51n/ RCS-9651C, now prepared auto restart action, 1DK tripping; and the extension wire switch 4DK that closes, power supply in holding station.
Claims (2)
1. the block sytem of a busbar fault, it is installed in the connection line of 110KV transformer station and 220KV transformer station, wherein have at least two main transformers to be connected on 110KV bus respectively by switch 3DK in 110KV transformer station, described 110KV bus is serially connected with on the circuit of 2DK and 5DK respectively respectively by switch 1DK and EF circuit, the two-way of 4DK and GH connection in 220KV transformer station; It is characterized in that described switch 1DK and the 4DK directive overcurrent protective device of mounting strap respectively, and 110KV bus is pointed in direction; Two described overcurrent protective devices and one are all installed in master-control room as the backup auto-activating device of substation secondary automatics.
2. one kind utilizes the blocking method of the block sytem of busbar fault described in claim 1, it is characterized in that described blocking method is: under the different mode of connection of the 110kV bus of 110kV transformer station, the directive overcurrent protective device of the switch 1DK mounting strap (21n/RCS-9621C) of 110KV circuit EF, i.e. inlet wire two; The directive overcurrent protective device of the switch 4DK mounting strap (11n/RCS-9611C) of circuit GH, i.e. inlet wire one; Bus is pointed in direction, when 110KV bus C section breaks down, offside line switching 2DK tripping, at this moment circuit EF dead electricity, 110KV bus dead electricity, decompression, when 110KV bus loss of pressure time, due to the overcurrent protection also action of the overcurrent protective device (21n/RCS-9621C) of 1DK, overcurrent protective device (21n/RCS-9621C) also can output its action node (21CD4), the node (326) of conducting backup auto-activating device (51n/ RCS-9651C) is carried out by node (51RD15), thus locking prepared auto restart; Backup auto-activating device (51n/ RCS-9651C), as the secondary automatics of transformer station, is all installed in master-control room with overcurrent protective device (21n/RCS-9621C) and overcurrent protective device (11n/RCS-9611C); The node (326) of backup auto-activating device (51n/ RCS-9651C) is as long as there is signal conduction, and backup auto-activating device is just by locking, and the action of locking mother stock prepared auto restart, prevents from coinciding with fault; When inlet wire EF breaks down, offside switch 2DK tripping, this side overcurrent protective device (21n/RCS-9621C) is failure to actuate; not locking backup auto-activating device (51n/ RCS-9651C), now prepared auto restart action, 1DK tripping; and the extension wire switch 4DK that closes, power supply in holding station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850018.0A CN104836211A (en) | 2014-12-30 | 2014-12-30 | Bus fault locking system and locking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410850018.0A CN104836211A (en) | 2014-12-30 | 2014-12-30 | Bus fault locking system and locking method |
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| Publication Number | Publication Date |
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| CN104836211A true CN104836211A (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410850018.0A Pending CN104836211A (en) | 2014-12-30 | 2014-12-30 | Bus fault locking system and locking method |
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| CN (1) | CN104836211A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149758A (en) * | 2018-10-08 | 2019-01-04 | 国网冀北电力有限公司唐山供电公司 | A kind of high, normal, basic three sides prepared auto restart movement fitting method of 110kV substation |
| CN112582989A (en) * | 2020-12-16 | 2021-03-30 | 广东电网有限责任公司 | Power system for preventing backup power automatic switching on and switching off of fault bus and control method thereof |
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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 |
| CN202455048U (en) * | 2012-01-19 | 2012-09-26 | 无锡市科环自动化设备有限公司 | Bus failure main protection device of track traffic power supply system |
| US20130271879A1 (en) * | 2012-04-17 | 2013-10-17 | Siemens Aktiengesellschaft | Fault Protection System For A Power System Of Dynamically Positioned Vessel |
| CN204597465U (en) * | 2014-12-30 | 2015-08-26 | 国网浙江海盐县供电公司 | A kind of block sytem of busbar fault |
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2014
- 2014-12-30 CN CN201410850018.0A patent/CN104836211A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499649A (en) * | 2008-05-19 | 2009-08-05 | 河南省电力公司 | Networking bus bar protecting method based on GOOSE mode |
| CN202455048U (en) * | 2012-01-19 | 2012-09-26 | 无锡市科环自动化设备有限公司 | Bus failure main protection device of track traffic power supply system |
| US20130271879A1 (en) * | 2012-04-17 | 2013-10-17 | Siemens Aktiengesellschaft | Fault Protection System For A Power System Of Dynamically Positioned Vessel |
| CN204597465U (en) * | 2014-12-30 | 2015-08-26 | 国网浙江海盐县供电公司 | A kind of block sytem of busbar fault |
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| 汪泽州等: "110kV变电站两种运行方式分析", 《经验点滴》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149758A (en) * | 2018-10-08 | 2019-01-04 | 国网冀北电力有限公司唐山供电公司 | A kind of high, normal, basic three sides prepared auto restart movement fitting method of 110kV substation |
| CN112582989A (en) * | 2020-12-16 | 2021-03-30 | 广东电网有限责任公司 | Power system for preventing backup power automatic switching on and switching off of fault bus and control method thereof |
| CN112582989B (en) * | 2020-12-16 | 2023-02-10 | 广东电网有限责任公司 | Power system for preventing backup power automatic switching on and switching off of fault bus and control method thereof |
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Application publication date: 20150812 |
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