摘要
35kV线路大多采用中性点不接地的方式运行,且全线不架设避雷线,用传统的规程法难以对其耐雷特性进行研究。因此,依据规程法的基本理论推导了其反击耐雷性能的计算方法,同时结合ATP-EMTP仿真程序,对35kV线路典型的两种杆塔的反击耐雷性能进行了分析研究。结果表明:随着杆塔冲击接地电阻的减小,绝缘子片数的增加,杆塔高度的降低,线路的反击跳闸率降低。
The neutral non-grounding mode of operation, as well as the unshielded mode is adopted in Chinese 35 kV transmission line. Therefore, it＇s difficult to analyze and calculate the lighting performance of the 35 kV transmission line using the classical prescriptive method. In this paper, the calculation method of lightning protection level is studied, combine the ATP-EMTP program the lightning baek-flashover performance of a 35 kV transmission line is analyzed. The results indicted, the back-trip rate reduces with reduce of footing resistance, strength of insulation level and reduce of height of pole.
出处
《山东电力技术》
2009年第3期55-58,共4页
Shandong Electric Power
关键词
线路
反击耐雷
研究
transmission line
lightning back-flashover
analysis
作者简介
孙伟（1982-），男，从事发电厂设备管理工作。
