考虑透射模量的初始反极性行波的辨识方法  

An Identification Method for Initial Reverse Polarity Traveling Wave Considering Module Traveling Wave Coupling

作　　者：张峰[1,2] 梁军[1,2] 丛志鹏 杨慎全 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]烟台电力公司,山东省烟台市264000 [4]山东电力经济技术研究院,山东省济南市250060

出　　处：《电力系统自动化》2013年第10期108-112,118,共6页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(51277114);山东省博士后专项基金资助项目(201103032);教育部留学回国科研启动基金资助项目;山东大学自主创新基金项目(2011GN066);已申请国家发明专利(申请号:201110199061.1)~~

摘　　要：提出了初始反极性行波的辨识方法,对单端行波故障测距具有重要意义。初始反极性行波的出现时刻与母线类型、故障点位置和零模分量衰减程度有直接关系;三一类母线结构中故障初始行波和第2个同极性波头的时间差Δt1,以及第2个同极性波头与初始反极性行波的时间差Δt2,在故障点透射模量可测和衰减至不可测情况下,其比值Δt1/Δt2与故障距离均满足固定的函数关系;Δt1与故障距离在透射模量可测和衰减至不可测情况下也满足固定的函数关系。提出了考虑故障点模量透射及其衰减特性的初始反极性行波的辨识方法。仿真验证表明,该方法可有效识别初始反极性行波的性质。An identification method for initial reverse polarity traveling wave（RPTW） is proposed,which is meaningful for single ended traveling wave fault location.The initial appearance of RPTW is relevant to such variables as the bus type,fault location,etc.No matter the coupling modeling traveling wave attenuates or not,Δt1/Δt2 has a fixed functional relationship with the fault location in three-one bus type,where Δt1 is the time interval between the initial fault traveling wave and the second traveling wave with the same polarity;Δt2 refers to the time interval between the second same polarity traveling wave and the initial PRTW.Based on these facts,a novel initial PRTW identification method considering the attenuation of coupling traveling waves is presented.Simulation results show that the proposed method can effectively identify the initial PRTW.

关 键 词：行波模量透射 初始行波 行波波头 反极性 行波测距 

分 类 号：TM755[电气工程—电力系统及自动化]