数字化变电站抗异常数据的方法  

Abnormal Data Resisting Method in Digital Substation

作　　者：赵亮[1,2] 钱玉春[2] 刘宏君[3] 李延新[3] 

机构地区：[1]华北电力大学电气与电子工程学院,北京市102206 [2]唐山供电公司,河北省唐山市063000 [3]国网电力科学研究院/南京南瑞集团公司,江苏省南京市210003

出　　处：《电力系统自动化》2010年第19期97-99,共3页Automation of Electric Power Systems

摘　　要：数字化变电站与常规变电站的一个主要差异是电子式互感器的应用。在变电站电磁环境的干扰下,电子式互感器偶尔的异常数据输出会导致继电保护动作行为的不正确,降低供电可靠性。文中针对电子式电流互感器异常数据的特点,提出了一种基于幅值比较的采样值检测抗异常数据方法。仿真分析和实际工程应用表明,该方法可靠性高,同时又不影响保护动作速度。One of the main differences between digital substation and conventional substation is the application of electronic transformer. In the substation electromagnetic environment,the occasional output abnormal data of electronic transformer will lead to incorrect behaviors of protections,and reduce the reliability of power supply. According to the characteristics for the abnormal data of electronic current transformer,an abnormal data resisting method based on sampling data amplitude comparison is proposed. The simulation results and practical engineering applications show that the proposed method has high reliability without influencing the action speed of protection.

关 键 词：数字化变电站 电子式电流互感器 异常数据 幅值比较 

分 类 号：TM63[电气工程—电力系统及自动化]