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基于改进多波阻抗模型的特高压杆塔分流研究

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针对特高压(UHV)杆塔分流系数(α)特性问题,考虑杆塔自身结构特点,建立改进多波阻抗模型,利用ATP/EMTP仿真分析接地电阻、档距及雷电流幅值对UHV杆塔分流影响.研究表明,UHV杆塔接地电阻与α呈负相关性,相关性弱于普通输电线路;与档距呈正相关,随档距增加而增加,档距超过400 m后,增长趋势显著降低,趋于恒定.
Study on Shunt Coefficient of UHV Transmission Line Tower Based on Modified Multi-wave Impedance Model
From the perspective the characteristic of shunt coefficient (α)of UHV tower,a modified multi-wave imped-ance model was established considering the structural characteristics of UHV tower,and the effects of ground resistance,gear distance and lightning current amplitude on the shunt of UHV tower were analyzed by ATP/EMTP simulation.The results showed that there is a negative correlation between the grounding resistance of UHV tower and α,which is weaker than that of ordinary transmission lines and positively correlated with the span.And when the gear spacing exceeds 400m,the growth trend decreases significantly and tends to be constant.

ultra-high voltagetowershunt coefficientlightning strikemulti-wave impedance model

张兵兵、东方、陈强、何启明、苏玉宗、白丰鹏

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中科天际科技股份有限公司,宁夏 银川 750001

内蒙古自治区气候中心,内蒙古 呼和浩特 010000

内蒙古自治区乌海市气象局,内蒙古 乌海 016000

特高压 杆塔 分流系数 雷击 波阻抗模型

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(13)