基于GOOSE通信的智能保护装置在青岛地铁中压供电网络的应用
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摘要
大分区环网接线的中压供电网络在建设投资和运营能耗两方面具有较好的经济性,在地铁供电系统中得到广泛应用。结合青岛地铁11号线工程实践分析指出,大分区环网接线对继电保护的选择性及速动性提出更高的要求;而传统继电保护方案依靠时间级差配合满足选择性要求,会造成保护动作延时过长、与城网变电站保护匹配性差、设备热稳定性要求高等问题,已难以满足大分区环网接线的要求。因此,推荐在大分区环网接线的中压供电网络中采用基于GOOSE通信的智能保护配置方案。智能保护方案通过组建专用的GOOSE网络实现本站及相邻车站各智能保护装置之间的数据快速交换,并根据交换的数据信息对过电流保护进行逻辑判断以确定实际的故障发生位置,从而使最靠近故障点的保护装置快速动作。智能保护方案可从根本上解决继电保护的选择性、速动性问题,能够更好地匹配中压供电网络大分区环网接线方案。
Owing to economical efficiency in construction investment and operation energy consumption, in recent years, ring connections with large service areas have widely been used in medium voltage power supply network of metros. Combining practices of Qingdao Metro Line 11, the author indicates that the ring connection with large service area requires selectivity and action speed of relay protection, and traditional relay protection methods could not satisfy these conditions because of the problems of long action time, poor matching with urban power networks, and higher thermal stability requirements of power equipment. Therefore, this study introduces the intelligent relay protection plan based on GOOSE communications. By building the GOOSE network, the intelligent relay protection devices in a station and adjacent stations communicate with each other, confirming the fault position according to the logical judgement of over-current protection. This is done on the basis of transfer data; thus, the relay protection device that is closest to the fault position acts rapidly to cut off the short circuit fault.The intelligent relay protection plan based on GOOSE communications has radically solved the problem of selectivity and action speed and shows agreement with the ring connection with large service area.
Owing to economical efficiency in construction investment and operation energy consumption, in recent years, ring connections with large service areas have widely been used in medium voltage power supply network of metros. Combining practices of Qingdao Metro Line 11, the author indicates that the ring connection with large service area requires selectivity and action speed of relay protection, and traditional relay protection methods could not satisfy these conditions because of the problems of long action time, poor matching with urban power networks, and higher thermal stability requirements of power equipment. Therefore, this study introduces the intelligent relay protection plan based on GOOSE communications. By building the GOOSE network, the intelligent relay protection devices in a station and adjacent stations communicate with each other, confirming the fault position according to the logical judgement of over-current protection. This is done on the basis of transfer data; thus, the relay protection device that is closest to the fault position acts rapidly to cut off the short circuit fault.The intelligent relay protection plan based on GOOSE communications has radically solved the problem of selectivity and action speed and shows agreement with the ring connection with large service area.
引文
[1]地铁设计规范:GB 50157―2013[S].北京:中国建筑工业出版社,2014:140-157.Code for design of metro:GB50157-2013[S].Beijing:China Architecture&Building Press,2014:140-157.
[2]韩连祥,张钢.城市轨道交通中压网络供电分区的划分[J].都市快轨交通,2007,20(4):75-77.HAN Lianxiang,ZHANG Gang.Subdivision of the service areas for medium voltage power supply network in urban rail transit[J].Urban rapid rail transit,2007,20(4):75-77.
[3]于松伟.城市轨道交通供电系统设计原理与应用[M].成都:西南交通大学出版社,2008.YU Songwei.Design principle and application of power system for urban rail transit[M].Chengdu:Southwest Jiaotong University Press,2008.
[4]贺家李,宋从矩.电力系统继电保护原理[M].北京:中国电力出版社,2004.
[5]韩连祥.城市轨道交通中压双环网继电保护和自动装置配置[J].都市快轨交通,2005,18(1):36-39.HAN Lianxiang.Configuration of relay protection and automatic devices for medium voltage double-looped network in urban rail transit system[J].Urban rapid rail transit,2005,18(10):34-36.
[6]陈建君,周才发.城市轨道交通工程中压供电网络保护方案优化[J].电气化铁道,2014(3):46-48.
[7]魏巍,严伟,沈全荣.地铁数字电流保护技术的应用[J].都市快轨交通,2014,27(5):60-63.WEI Wei,YAN Wei,SHEN Quanrong.Application of the digital network over current relay for metro[J].Urban rapid rail transit,2014,27(5):60-63.
[8]北京城建设计发展集团股份有限公司.青岛地铁11号线供电系统初步设计[A].青岛,2013.
[9]智能变电站继电保护技术规范:Q/GDW441-2010[S].北京:中国电力出版社,2010:4-5.Technical specifications of protection for smart substation:Q/GDW441-2010[S].Beijing:China Power Press,2010:4-5.
[10]南京南瑞继保电气有限公司.PCS-9611DT线路保护装置技术和使用说明书[Z].南京,2014:11-16.
[2]韩连祥,张钢.城市轨道交通中压网络供电分区的划分[J].都市快轨交通,2007,20(4):75-77.HAN Lianxiang,ZHANG Gang.Subdivision of the service areas for medium voltage power supply network in urban rail transit[J].Urban rapid rail transit,2007,20(4):75-77.
[3]于松伟.城市轨道交通供电系统设计原理与应用[M].成都:西南交通大学出版社,2008.YU Songwei.Design principle and application of power system for urban rail transit[M].Chengdu:Southwest Jiaotong University Press,2008.
[4]贺家李,宋从矩.电力系统继电保护原理[M].北京:中国电力出版社,2004.
[5]韩连祥.城市轨道交通中压双环网继电保护和自动装置配置[J].都市快轨交通,2005,18(1):36-39.HAN Lianxiang.Configuration of relay protection and automatic devices for medium voltage double-looped network in urban rail transit system[J].Urban rapid rail transit,2005,18(10):34-36.
[6]陈建君,周才发.城市轨道交通工程中压供电网络保护方案优化[J].电气化铁道,2014(3):46-48.
[7]魏巍,严伟,沈全荣.地铁数字电流保护技术的应用[J].都市快轨交通,2014,27(5):60-63.WEI Wei,YAN Wei,SHEN Quanrong.Application of the digital network over current relay for metro[J].Urban rapid rail transit,2014,27(5):60-63.
[8]北京城建设计发展集团股份有限公司.青岛地铁11号线供电系统初步设计[A].青岛,2013.
[9]智能变电站继电保护技术规范:Q/GDW441-2010[S].北京:中国电力出版社,2010:4-5.Technical specifications of protection for smart substation:Q/GDW441-2010[S].Beijing:China Power Press,2010:4-5.
[10]南京南瑞继保电气有限公司.PCS-9611DT线路保护装置技术和使用说明书[Z].南京,2014:11-16.