康权,张鸿飞,吴小波,施盛波,杨跃平
KANG Quan1,ZHANG Hong-fei1,WU Xiao-bo1,SHI Sheng-bo1,YANG Yue-ping2(1.NingBo Electric Power Bureau

• 1:宁波电业局
• 2:宁海供电局

摘要(Abstract)：

在微机保护中,保护装置要根据不同的运行方式来采集相应的交流电压,因此电压切换正确与否对保护的可靠动作具有十分重要的意义。就一起因切换回路中的双位置继电器不正确动作而导致的母线TV二次侧非正常并列事例进行了详细分析,并提出了提高切换可靠性的改进措施。
In the microcomputer based relay protection,the alternating voltage is obtained according to the different operation mode by the device.So,the accurate action of the voltage-switching is of vital importance to the device's reliability.In this article,a fault of the abnormal parallel of bus TV caused by the incorrect action of double-coil realy in the voltage-switching circuit is analyzed particularly,and some measures were put forward to increase the circuit's accuracy.

关键词(KeyWords)： 电压切换;双位置继电器;并列
voltage-switching;double-coil relay;parallel

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 康权,张鸿飞,吴小波,施盛波,杨跃平
KANG Quan1,ZHANG Hong-fei1,WU Xiao-bo1,SHI Sheng-bo1,YANG Yue-ping2(1.NingBo Electric Power Bureau

DOI: 10.19585/j.zjdl.2009.06.019

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• 郭占伟,魏晓强,肖志刚,等.电压切换回路故障分析[J].继电器,2006(22):81-83.