基于贝瑞龙模型的特高压串补线路双端测距算法  

Double-Side Fault Location of UHV Serially Compensated Lines Based on Bergeron Model

作　　者：苏新霞 王致杰[1] 陈丽娟[1] 裴泽阳 陈舒婷[1] 曾维炎 梁艺腾 

机构地区：[1]上海电机学院电气学院,上海201306

出　　处：《上海电机学院学报》2014年第4期206-211,共6页Journal of Shanghai Dianji University

基　　金：国家自然科学基金项目资助(11201267);上海市自然科学基金项目资助(12ZR1411600);上海市教育委员会科研创新项目资助(12ZZ197)

摘　　要：为克服特高压串补线路测距精度不高的问题,提出一种基于贝瑞龙模型的双端测距方案。该方案依据特高压实际工程背景,利用双端电压电流信息推导出故障点处的电压、电流,并通过搜索法确定故障点位置;采用分布参数,将特高压线路分布电容特点包含在内,不受特高压线路高频分量的影响;同时,不依赖串补本身模型,不受MOV非线性影响。利用仿真软件PSCAD进行仿真验证,结果表明,该算法在不同故障类型下的测距精度都较高,对过渡电阻有较强适应性。Measurement accuracy of ultra-high voltage（UHV）serially compensated lines is low.To overcome the problem,this paper proposes a two-terminal fault-locating scheme based on the Bergeron model.On the basis of UHV engineering practices,the scheme uses two terminal voltage and current information to derive voltage and current at the fault point,and locate the fault point in a search process.The scheme uses distributed parameters and includes distributed capacitance of the UHV transmission lines,not affected by the high frequency components in the transmission line.This scheme does not rely on the model itself and unaffected by MOV nonlinear.Using PSCAD in the simulation,the results show that the proposed scheme has high accuracy for different types of faults.It has strong adaptability to transition resistance.

关 键 词：特高压串补输电线路 双端电气量 故障测距 贝瑞龙模型 

分 类 号：TM712[电气工程—电力系统及自动化]