输电线路防雷措施探讨

根据我局2009年至2010年110kV及以上输电线路跳闸情况分析，雷击跳闸占线路事故掉闸次数的52．6％，110kV线路雷击跳闸占46．67％，220kV线路雷击跳闸占事故掉闸次数的75％，因此，2011年提高输电线路运行可靠性的技术方案主要围绕防雷开展，线路防雷主要是改造接地体和安装避雷器、综合防雷装置以及可控避雷针等。

Discussion on the lightning protection measure of the transmission line

According to the trip case of the 110kV and above transmission line during the year of 2009 to 2010, the trip caused by the lightning occupy 52.6% of the line trip fault, the lightning trip of the 110kV lines occupy 46.47%, the lightning trip of the 220kV lines occupy 75%. Thus, the technical scheme to improve the operational reliability is mainly developed on the lightning protection. Reforming the grounding body, installing the an＇ester, comprehensive lightning protection devices and controllable lightning rod is the primary method of the lightning protection of the lines. The paper discusses in the area of the above lightning protection of the transmission line.