电力系统保护与控制2012，Vol.40Issue(9)：43-48,6.
输电线路雷击与故障的积分识别方法
Integral identification method of lightning stroke and fault for transmission line
摘要
Abstract
Aiming at the impact of transient signals generated by lightning stroke on the travelling wave based protection, a novel identification algorithm is proposed. On the basis of analysis of transient current waveforms generated by fault and lightning stroke respectively, this paper presents a hybrid discrimination criterion. Using the characteristics of symmetric current waveform induced by lightning stroke without causing fault and that of asymmetric current waveform generated by general fault within a very short interval, the waveforms of transient current above and below time-axes are integrated, respectively. Firstly, through comparing their relative ratio value, the primary criterion identifying fault and lightning stroke is established. Secondly, to improve the reliability of discrimination between lightning stroke with and without causing fault, according to the difference of them, the secondary criterion is also defined. The EMTDC simulation results demonstrate that the proposed integral criterions are valid and correct.This work is supported by National Natural Science Foundation of China (No. 51177094).关键词
输电线路/行波保护/雷击/波形特征/积分Key words
transmission line/ travelling wave based protection/ lightning stroke/ characteristic of waveform/ integral分类
信息技术与安全科学引用本文复制引用
邹贵彬,高厚磊,朱峰,王昊..输电线路雷击与故障的积分识别方法[J].电力系统保护与控制,2012,40(9):43-48,6.基金项目
国家自然科学基金(51177094) （51177094）
山东省优秀中青年科研奖励基金(BS2010DX014) （BS2010DX014）
