张自伟
ZHANG Zi-wei(Lianyungang Power Supply Company

• 1:连云港供电公司

摘要(Abstract)：

城市终端变电站多为内桥接线方式,保护配合不当、日常运行操作、异常及事故处理都可能使继电保护出现死区。分析了内桥接线变电站母联开关附近、主变低压侧开关处和低压侧母联旁的3个保护死区,并提供切实有效的消除死区解决方案。
Inner bridging lines are commonly seen in end substations in urban areas.Inappropriate protection and coordination,daily operation,abnormities and accidents handling are likely to trigger dead-zone of relaying protection.This paper analyzes three dead-zones near bus tie switches in inner bridging lines in substations,main transformer low voltage side switches and low voltage side bus ties,and puts forward pragmatic and effective solutions to avoid dead-zone.

关键词(KeyWords)： 变电站内桥接线;保护死区;解决方案
inner bridging lines;protection dead-zone;solution

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张自伟
ZHANG Zi-wei(Lianyungang Power Supply Company

DOI: 10.19585/j.zjdl.2013.01.009

参考文献(References)：

• 陆振芬,王徐延.110 kV内桥接线变电站的安全运行分析[J].江苏电机工程,2009,28(6):37-39.
• 张保会,尹项根.电力系统继电保护[M].北京:中国电力出版社,2005.
• 张全元.变电运行现场技术问答[M].北京:中国电力出版社,2009.