周傅峻,林彤
ZHOU Fujun,LIN Tong

• 1:浙江浙能乐清发电有限责任公司

摘要(Abstract)：

对一起由于500 kV系统B相瞬时性接地故障引发发电厂2台660 MW机组跳闸的事件进行分析,通过分析认为:汽轮机KU保护功率变送器测量失真、KU和零功率切机保护逻辑不完善等多种因素是造成机组跳闸的主要原因,并提出整改措施。
This paper introduces a tripping accident of two 660 MW units in a power plant caused by phase-B transient ground fault of 500 kV power system. The analysis results show that the primary causes of units tripping are distorted measurement of power transmitter of turbine KU protection, incomplete protection logic of KU and zero power generator tripping protection. Furthermore, rectification measures are proposed.

关键词(KeyWords)： 功率变送器;功率测量;零功率切机保护;机组跳闸
power transmitter;power measurement;zero power generator tripping protection;unit tripping

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 周傅峻,林彤
ZHOU Fujun,LIN Tong

DOI: 10.19585/j.zjdl.2014.10.008

参考文献(References)：

• [1]都兴有.关于快控汽门(快关)技术研讨介绍[J].中国电力,1999(6):23-27.
• [2]王可山.零功率切机保护在大型火电厂的应用[J].能源与节能,2011(4):80-81.