一起保护装置频繁启动问题的分析

Analysis on Frequent Startup Problem for Some Protection Equipment

针对某500 kV智能变电站某双回220 kV线路在投运过程中,双重化配置的其中一套保护装置出现频繁启动的异常情况,分析给出了异常情况出现的原因,同时,明确了当前国内各流行的继电保护装置的制造厂家关于突变量启动算法上的优劣性,进一步通过实际的保护装置采样数据验证了付氏算法在应对含有谐波、非周期分量较高的特殊负荷条件下其较好的滤波特性,在此基础之上,结合国家电网公司关于继电保护装置定值简化的要求,提出了取消当前关于继电保护装置关于突变量启动这一定值项的设计思路,并给出了相关的理论分析和可行的解决方案,供相关人员参考。

Aiming at the abnormal problem that frequent startup event occurs in one protection equipment while the other dosen＇t among dual-disposition protection equiments in the 500 k V substation, when double circuit 220 k V line is putted into operation, this paper gives the reason for the problem.And meanwhile,shows the Pros and cons about the variation startup algorithm for the representative domestic protection equipment manufacturers,furthermore,the paper verifies the better filtering characteristics of fourier algorithm to such load with much harmonic wave and non-periodic components by using the actual sampling datas.Additional,combined with the requirement of simplifying setting value by State Power,the paper shows the idea that the setting value about variation startup should be cancelled and gives a related theoridila analysis and solution for those professionals.