基于初始反极性行波检测的单端故障测距算法  

Single Ended Fault Location Algorithm Based on Detection of Initial Reverse Polarity Traveling Wave

作　　者：张峰[1,2] 梁军[1,2] 李建超 高红梅 车仁飞[1,2] 邹贵彬[1,2] 

机构地区：[1]山东大学电气工程学院,山东省济南市250061 [2]电网智能化调度与控制教育部重点实验室山东大学,山东省济南市250061 [3]聊城电力公司,山东省聊城市252000 [4]滨州电力公司,山东省滨州市256600

出　　处：《电力系统自动化》2013年第4期108-113,共6页Automation of Electric Power Systems

基　　金：山东省博士后专项基金资助项目(201103032);国家自然科学基金资助项目(51277114);教育部留学回国人员科研启动基金资助项目;山东大学自主创新基金资助项目(2011GN066)~~

摘　　要：从正、反极性初始故障行波综合利用的角度,提出了检测初始反极性行波实现单端故障测距的新算法。初始反极性行波检测过程中所受干扰相对较少,检测可靠性较高,并且其出现时刻与故障点位置具有特定的分段线性关系。通过"三一类"母线(测量端本端为三类母线,对端为一类母线)初始反极性行波的特征分析并辨识其出现时刻,结合初始故障行波,可有效确定该母线类型下故障点所属线路区段和第2个波头性质,并可初步测量出故障点的位置,依此构造稳定可靠的单端行波测距算法,并确定故障点的精确位置。该算法利用初始正、反极性行波波头,检测可靠性相对较高。仿真验证表明,该算法可有效确定故障点的位置,并将显著提高单端行波故障测距的适应能力及准确性。A novel single ended fault location algorithm based on the initial reverse polarity traveling wave （RPTW） detection is proposed. Research shows that the RPTW has less influencing factors, which ensures the high detection reliability, moreover, the time when the RPTW arrives has a certain relationship with fault location, has a piecewise linear characteristic. According to the characteristics of RPTW and combining the initial traveling wave, the fault section and the primary fault location can be determined as soon as the initial RPTW can be identified. After that the exact fault point will be located using other fault information contained in the single ended traveling waves. Only the initial traveling wave and initial PRTW have been used in the present algorithm, which will guarantee the detection accuracy. Simulation results show that the proposed algorithm can effectively locate the fault point, and obviously improve the single ended fault location＇s reliability and accuracy.

关 键 词：故障测距 单端 行波 初始反极性行波 

分 类 号：TM755[电气工程—电力系统及自动化]