摘要
介绍了一起110kV微机母差保护误动作事故的检查处理过程,介绍了该型号微机母线保护的基本原理,从电力互感器是否饱和、抗饱和措施是否正确投入、比率制动系数设定是否合理三个方面分析了引起微机母差保护误动的原因,给出了防止微机母差保护误动的防范措施及对策。通过采取有针对性的措施,大大提高了该型母差保护装置的可靠性,保证了电网的安全稳定运行。
This paper introduces the inspection process of the maloperation of a 110kV microprocessor-based busbar protection. It then introduces the principle of a microprocessor-based busbar protection, analyses the maloperation reasons of the busbar differential protection from three aspects, including TA saturation, anti-saturation measures, ratio restraint coefficient, and sums up the preventive measures and of busbar differential protection maloperation finally.This type of protection device reliability is greatly improved through taking targeted measures and thus the safe and stable operation of the grid is ensured.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第19期127-129,共3页
Power System Protection and Control
关键词
母差保护
误动
原因分析
抗饱和措施
比率制动
busbar differential protection
maloperation
reason analysis
anti-saturation measure
ratio restraint
