期刊论文

Analysis on Lightning Invasion Waves of 1 000 kV AC Compact Transmission Substation

中文

电瓷避雷器

1003-8337

2012

3

67-70+76

10.3969/j.issn.1003-8337.2012.03.014

本校为第一机构

受输电线路走廊的限制,紧凑型输电方式将会成为我国1 000 kV特高压交流输电发展的趋势。由于输电导线之间的距离减少,一旦线路遭受雷击,雷电侵入波可能对变电站构成更大的威胁。针对雷击紧凑型输电杆塔产生雷电入侵波对变电站的影响进行研究,应用ATP-EMTP建立了雷电过电压沿不同输电类型侵入变电站的仿真模型,对比分析了不同输电类型雷电侵入波的特点,得出杆塔冲击接地电阻是影响雷电过电压的一个重要因素,采取降低冲击接地电阻的方法,可降低雷电流侵入变电站的幅值,尤其对紧凑型输电线路,当变电站内绝缘水平很难降低时,可优先采取降低杆塔接地电阻的方法。

Limited by the transmission lines corridor ,compact transmission mode will become the trend of the development of 1 000 kV AC UHV transmission in China. Due to the reduction of the dis- tance between the transmission lines,if lighting took place on lines, lightning intruding surge might be more dangerous to substation. Therefore ,research is carried out for the effect of lightning intruding surge generated by lightning compact transmission tower on the substation and applying ATP-EMTP, simulation models established according to the different types of lightning overvoltages invading substa- tio...