摘要
防绕击应是超高压输电线路的防雷重点,以华东电网天瓶5406线为例,阐述故障情况,进行故障计算,分析故障原因,确定了以防绕击为主的防雷策略,深入分析了超高压输电线路中的8项基本防雷措施,分析其利弊,并根据超高压输电线路的防雷特点,最终采用了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广泛的意义,并取得了良好的实效。
Anti-shielding failure should be a focus in the lightning protection of a UHV transmission line. Based on the case of the Tianping line 5406 of the East China Power Grid, the fault phenomena are clearly stated in this paper, followed by fault calculation and fault analysis, and then the lightning protection mechanism is established with focus on anti- shielding failure. In addition, eight basic measures for the lightning protection of the UHV transmission line are intensively analyzed with the pros and cons of each measure given. According to the features of lightning protection, line arresters and controllable discharge lightning rods are chosen as the main means of lightning protection for Tianping line 5406. This comprehensive lightning protection pattern has extensive meaning in real projects, and favorable effects have been achieved with this pattern.
出处
《电网与清洁能源》
2011年第12期57-62,共6页
Power System and Clean Energy
关键词
超高压
输电线路
防雷
防绕击
避雷器
EHV
transmission lines
lightning protection
anti-shielding failure
arrester
