摘要
根据500 kV串补保护的功能,设计相应的检验方案。针对MOV保护的特殊性,给出MOV保护的检验方法:提出优化输出仿真波形的方法,达到保护动作的采样要求,提高MOV高电流保护测试的精度;提出一种基于电气量的算法准确反映MOV的能量变化,结合特性曲线将作为动作判断依据的MOV温度通过仿真电流表示,在规定时间内满足温度保护动作要求,并自动计算理论温度和温升作为判断保护动作正确性的依据。实现串补保护性能的现场检验,提高串补装置运行的可靠性。
According to the functions of series compensation protection, this paper designs feasible testing programs. According to particularity of the MOV protection, it designs a testing method. This method formulates a scheme to optimize simulating wave for improving the accuracy of MOV high-current protection testing to the request,formulates an algorithm to reflect energy of MOV,and uses simulating current instead of temperature to evaluate whether the MOV acts correctly, for satisfying the request of protection＇s action. Then, it calculates theoretical temperature automatically for evaluation. And the testing of series compensation protection is completed to improve the reliability of series compensation under running.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2008年第15期65-68,共4页
Power System Protection and Control
关键词
串补保护
继电保护测试
MOV保护
差值法
series compensation protection
relay test
MOV
interpolation method
