摘要
介绍了以正序电压作为极化电压的横联差动电流方向保护的原理及其在500kV同杆双回线系统中的仿真实验情况。实验采用ATP-EMTP软件建模,并用Matlab来对数据进行处理。实验模型为58.1km的单、双侧电源的双回线系统,故障类型包括单回线的各种简单故障及双回线各种类型的跨线故障。通过对实验结果的分析,提出了横联差动保护应用于500kV同杆双回线系统应当注意的问题。
This paper introduces the principle of transverse differential current direction protection ,which takes positive sequence voltage as its polarizing voltage, and during the simulation experiment of 500 kV double circuit lines on the same tower system ,how does this protection behave. In this experiment, first, this paper uses the ATP-EMTP to build the system model, and then treats the data with MATLAB. The experiment model is a double circuit lines on the same tower system of 58.1km length with single or two- side electric source supply. The fault type includes simple fault on single line and ovedine fault on two circuits line. By analyzing the experiment result, this paper points out some noticeable questions about transverse differential protection used in 500 kV double circuit lines on the same tower system.
出处
《继电器》
CSCD
北大核心
2008年第9期1-4,共4页
Relay
关键词
横差保护
双侧电源
同杆双回线
电流方向保护
仿真实验
transverse differential protection
bilateral source
double circuit lines on the same tower
current directionprotection
simulation experiment
