适用于半波长线路的贝瑞隆差动改进算法  

Bergeron Model Based Current Differential Protection Modified Algorithm for Half-wavelength Transmission Line

作　　者：李斌[1] 郭子煊 姚斌[1] 王兴国[2] LI Bin GUO Zixuan YAO Bin WANG Xingguo(Key Laboratory of Smart Grid of Ministry of Education （Tianjin University）, Tianjin 300072, China China Electric Power Research Institute, Beijing 100192, China)

机构地区：[1]智能电网教育部重点实验室(天津大学),天津市300072 [2]中国电力科学研究院,北京市100192

出　　处：《电力系统自动化》2017年第6期80-85,共6页Automation of Electric Power Systems

摘　　要：介绍了一种适用于半波长线路的贝瑞隆差动改进算法。该算法使用线路1/6,1/2和5/6这3个点作为贝瑞隆差动保护的参考点,分别计算3个参考点的贝瑞隆差流幅值,然后累加3个差流幅值除以2,可以近似得到故障点的实际短路电流。该算法解决了传统贝瑞隆差动保护应用于半波长线路时计算值受参考点影响的问题。EMTP仿真表明,该方法可以很好地计算出故障点的故障电流,适用于半波长输电线路。This paper describes a Bergeron model based current differential protection modified algorithm for half-wavelength transmission line.The algorithm uses three points as the reference points for the Bergeron model based current differential protection.Differential current amplitudes are calculated for three reference points,and then three current amplitudes are accumulated with the sum divided by two to obtain calculation results approximately equal to the actual short-circuit current at the fault point.This algorithm has solved the traditional Bergeron model based current differential protection issues that affect the position of the reference point.EMTP simulation shows that this algorithm can calculate the fault current fault point effectively and is suitable for application to half-wavelength transmission line.

关 键 词：半波长交流输电 继电保护 贝瑞隆模型 电流差动保护 

分 类 号：TM773[电气工程—电力系统及自动化]