摘要
本文以华东电网天瓶5406线为实例,通过对雷击故障的计算分析,确定了以防绕击为主的防雷策略。分析了超高压输电线路中的基本防雷措施,并根据超高压输电线路的防雷特点,采用安装线路避雷器和可控放电避雷针作为天瓶5406线防雷改造的主要措施,这种综合防雷措施在实际应用中具有良好效果。
Anti-shielding failure should be the main point of lightning protection in extra-high voltage transmission line. Based on the case of Tianping Line 5406 of East China Power Grid, fault phenomena are clearly stated, followed by fault caculation and fault analysis. Then anti-shielding failure is established as a basical mechanism of lightning protection. What＇s more, eight fundamental measures of lightning protection in the use of extra-high voltage transmission line are given deep interpretation, including the pros and cons. According to the features of lightning protection, line arrester and controllable discharge lightning rod are eventually put forward as principal means of lightning protection for Tianping Line 5406. In conclusion, the kinds of multiple lightning protection patterns have extensive meanings in the real application, and have proved favorable effects.
出处
《中国水能及电气化》
2011年第11期51-56,共6页
China Water Power & Electrification
关键词
超高压输电线路
防雷
绕击
EHV transmission lines
lightning protection
shielding failure
arrester
