输电线路的雷电识别研究  

Research on Identification Methods of Lightnings on Transmission Lines

作　　者：甘燕[1] 胡红霞 GAN Yan;HU Hongxia(College of Electrical Engineering ＆ New Energy, China Three Gorges University, Yichang 443000, Hubei, China;Tianshui Power Supply Company of State Grid Gansu Electric Power Company, Tianshui 741000, Gansu, China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443000 [2]国网甘肃省电力公司天水供电公司,甘肃天水741000

出　　处：《电网与清洁能源》2018年第1期21-25,共5页Power System and Clean Energy

基　　金：三峡大学高层次人才科研启动基金(1910103(20161217));江苏省配电网智能技术与装备协同创新中心开放基金(XTCX201712);国家自然科学基金(51477090)~~

摘　　要：针对雷电干扰问题,提出了一种输电线路的雷电识别新算法。该方法依据轻型雷击、重型雷击及短路故障的不同暂态波形特征,构造复合识别判据。其一,利用电流行波首波面积比值特征量构成识别短路故障与雷击的判据;其二,运用电流行波在较短时间内的积分值特征量识别故障与轻型雷击。MATLAB仿真结果表明,所提算法能可靠区分轻型雷击、重型雷击和短路故障,是正确且有效的。With regard to lightning interference, this paper presents a new identification algorithm for lightnings on transmis- sion lines. On the basis of an analysis of the transient current waveform generated by line faults and mild and severe light- nings, the paper propose a compound criterion. First, through comparing the area ratio values of the first current travelling wave, the criterion for identifying short circuit faults and light- nings is established. Second, the integral value of the transient current within a very short interval is used to identify the mild lightnings and line faults. The MATLAB simulation results show that the proposed algorithm is correct and valid.

关 键 词：输电线路 雷击 波形特征 首波面积 积分 

分 类 号：TM77[电气工程—电力系统及自动化]