三峡近区500kV输电线路差异化防雷技术研究

Study on Differentiation Technology of Lightning Protection for 500 kV Transmission Line in Three Gorges Area

输电线路作为电力系统的重要组成部分,保证输电线路安全可靠运行是电力部门的重要工作。雷击故障作为影响输电线路安全运行的重要因素之一,对输电线路安全可靠运行造成了严重威胁。针对输电线路差异化防雷技术进行研究,依据研究成果对三峡近区500 kV输电线路雷击闪络风险进行评估并制定了相应专项改进方案,文章最后从理论和实践的角度对专项改进方案效果进行了综合评估。结果表明:采用输电线路差异化防雷技术制定的专项改进方案对降低三峡近区500 kV输电线路雷害风险有显著作用。

Transmission line is an important part of the power system. Ensure the transmission line work safely is an important work of the power sector. Lightning flashover is an important factor that affecting the safety of the transmission line. This paper research on the differentiation technology of lightning protection for the transmission line, make a lightning protection improvement program for 500 kV transmission line in Three Gorges area of china. Finally, the lightning protection improvement program has been evaluated from the perspective of theory and practice. The results show that the lightning protection improvement program is useful to reduce risk of lightning faults for the 500 kV transmission lines in Three Gorges area.