基于单端测量的同塔双回输电线路零序参数测量方法  

A Measurement Method for Zero Sequence Parameter of Long Distance Double Circuit Transmission Lines Based on One Terminal Measurement

作　　者：阮文凯 刘剑[1] 高峰[2] 彭曦 吴亦贝 秦亮[1] RUAN Wenkai;LIU Jian;GAO Feng;PENG Xi;WU Yibei;QIN Liang(School of Electrical Engineering,Wuhan University,Wuhan 430072,China;State Grid Zhengzhou Power Supply Company,Zhengzhou 450052,China)

机构地区：[1]武汉大学电气工程学院,武汉430072 [2]国网郑州供电公司,郑州450052

出　　处：《电力系统及其自动化学报》2018年第9期103-107,共5页Proceedings of the CSU-EPSA

摘　　要：为了减少同塔双回输电线路零序参数测量的复杂工序,本文提出了一种基于单端测量和分布参数模型的同塔双回输电线路零序参数测量新方法。利用PSCAD软件搭建同塔双回输电线路仿真模型,对本文提出的方法进行了全面的仿真验证,给出了从50~800 km不同线路长度下的测量结果。理论分析和仿真结果表明,本文提出的方法极大减少了测量的工作量,并且对短距离线路和长距离线路的测量误差均稳定在1%以内,具有较强的理论指导意义和实际工程应用前景。Inorder to reduce the complicated working procedure of measurement methods for zero sequence parameters of double circuit transmission lines,this paper proposed a new measurement method for the zero sequence parameters of double circuit transmission lines based on single terminal measurement and distributed parameter model,A simula-tion model of double circuit transmission lines with the same distance on one tower was built with PSCAD and simula-tion experiments were carried to verify the accuracy of the proposed method with different line lengths form 50 km to 800 km.Theoretical analysis and simulation results demonstrate that the measurement errors are less than 1%both for short distance lines and long distance lines,in addition,the new method can reduce measurement workload greatly and has both strong theoretical guidance and practical engineering application prospects.

关 键 词：同塔双回输电线路 零序参数 单端测量 分布参数 长距离输电线路 

分 类 号：TM711[电气工程—电力系统及自动化]