剖析无功补偿电容器的熔断器群爆  

Analysis of Multi-fuse Failure of Compensation Capacitors

作　　者：张博[1] 杨新增[2] 周勇[1] 

机构地区：[1]郑州大学电气工程学院,河南郑州450001 [2]濮阳供电公司,河南濮阳457000

出　　处：《郑州大学学报（工学版）》2012年第2期122-124,共3页Journal of Zhengzhou University（Engineering Science）

摘　　要：介绍了熔断器的安秒特性,以河南某110 kV变电站为例,分析了无功补偿电容器的熔断器群爆的主要原因,一是参数选择不当,熔断器的额定电流选得偏小,电容器的额定电压选得偏低,单只电容器的容量选得偏大;二是继电保护配置方面存在问题,电容器的过电压保护没有起到作用.通过调整熔断器和电容器的参数,并加装电容器零序过电压保护,使得整改后的补偿装置运行稳定.This paper introduces the ampere-second characteristics of fuses and takes the case of an 110kv substation in Henan province to analyze the main reasons of its multi-fuse failure： one is improper parameters,including small rated current of fuses,low rated voltage of capacitors and big capacity of individual capacitors;the other is the problem of the relaying protection configuration that the overvoltage protection of capacitors does not function properly.With parameters of fuses and capacitors adjusted and zero sequence overvoltage protection devices for capacitors installed,improved compensation device has not had any multi-fuse failure in operation so far.

关 键 词：电容器 熔断器 过电流 过电压 

分 类 号：TM563[电气工程—电器]