上海交通大学学报

上海交通大学学报（自然版） ›› 2015, Vol. 49 ›› Issue (04): 411-417.

• 电工技术 •    下一篇

后续雷击对输电线路绕击耐雷性能的影响研究

江安烽1，李锐海2，牛萍3，王国利2，黄柏1，傅正财1   

  1. （1．上海交通大学 电气工程系，电力传输与功率变换控制教育部重点实验室，上海 200240；2．特高压工程技术（昆明、广州）国家工程实验室，广州 510080；
    3.浙江省嘉兴市防雷中心，浙江 嘉兴 314050）
  • 收稿日期:2014-06-30 出版日期:2015-04-28 发布日期:2015-04-28
  • 基金资助:

    特高压工程技术（昆明、广州）国家工程实验室开放基金（NEL201310）

Impact of Subsequent Strokes on Lightning Shielding Failure Outage Rate of Transmission Lines

JIANG Anfeng1,LI Ruihai2,NIU Ping3,WANG Guoli2,HUANG Bai1,FU Zhengcai1   

  1. (1. Key Laboratory of Control of Power Transmission and Conversion of the Ministry of Education, Department of Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. National Engineering Laboratory for Ultra High Voltage Engineering Technology (Kunming, Guangzhou), Guangzhou 510080, China; 3. Jiaxing Lightning Protection Center of Zhejiang Province,
    Jiaxing 314050, Zhejiang, China)
  • Received:2014-06-30 Online:2015-04-28 Published:2015-04-28

摘要：

摘要：  为分析负极性后续雷击对输电线路绕击耐雷性能的影响，采用电磁暂态程序计算绕击耐雷水平、改进电气几何模型计算线路绕击跳闸率

的方法，研究了首次雷击、与首次雷击相同以及不同回击通道的后续雷击下雷电流波形和幅值分布、杆塔高度和地线保护角对典型结构的110、
220、500和1 000 kV输电线路绕击耐雷性能的影响.结果表明：后续雷击的电流分布对线路绕击跳闸率影响极大，而后续雷电流波形影响很小；
异回击通道后续雷击对500 kV以下线路的绕击跳闸率影响很大，而对特高压线路影响较小；500 kV线路有必要考虑后续雷击的影响；在线路首次
雷击和异回击通道后续雷击绕击跳闸率为0的情况下，同回击通道后续雷击仍可能造成绕击跳闸.

关键词: 首次雷击, 后续雷击, 输电线路, 电磁暂态程序, 改进电气几何模型, 绕击耐雷性能

Abstract:

Abstract： The lightning shielding failure withstand current and outage rate (SFOR) of typical single circuit type 110

kV, 220 kV, 500 kV and 1 000 kV transmission lines caused by the first stroke, subsequent stroke through the same and
different return stroke channels with first stroke was analyzed based on EMTP and improved electrogeometric model
(EGM). The effect of peak current distribution and waveform, tower height and shielding angle were analyzed. The results
show that the peak current distribution of the first and subsequent stroke has a significant impact on the SFOR while the
current front time of the first and subsequent stroke has little effect. The subsequent stroke of  different return
stroke channel has a significant impact on the transmission line with a voltage class of less than 500 kV but has little
influence on the UHV transmission line. The effects of subsequent stroke of the 500 kV transmission line is worth
considering. In the condition of none SFOR owing to the first stroke and the subsequent stroke of different return stroke
channel, the SFOR may still occur due to the same subsequent stroke of the return stroke channel.

Key words: first stroke, subsequent stroke, transmission lines, electromagnetic transient program(EMTP), improved electrogeometric model, shielding failure withstand performance

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