| 特高压共用接地极热参数分析 |
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| 引用本文： | 陈凡,何金良,张波,曹林,赵杰,吕金壮. 特高压共用接地极热参数分析[J]. 高电压技术, 2009, 0(6): 1267-1273 |
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| 作者姓名： | 陈凡 何金良 张波 曹林 赵杰 吕金壮 |
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| 作者单位： | 清华大学电机系电力系统国家重点实验室,北京,100084;南方电网技术研究中心,广州,510623 |
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| 摘 要： | 基于有限差分法原理,建立了一套可对直流接地极周围温度场参数进行时域分析的数值算法。该方法避免了现有接地极温升计算公式将接地极体视为等温体的缺点,可对接地极体温度分布进行计算。将该方法应用于我国云广和贵广II回直流输电系统共用接地极设计中,对接地极热参数进行分析,针对共用接地极3个备选极址的不同土壤参数特征,分别计算系统持续单极大地回线运行状态下的入地电流对接地极温升的影响。计算结果显示,合理设置接地极参数可将其温升控制在标准限值以内。
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| 关 键 词： | 特高压直流输电 热参数 接地计算 数值分析 共用接地极 有限差分法 |
UHVDC Common Ground Electrode Thermal Parameters Analysis |
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| CHEN Fan , HE Jin-liang , ZHANG Bo , CAO Lin , ZHAO Jie , L Jin-zhuang. UHVDC Common Ground Electrode Thermal Parameters Analysis[J]. High Voltage Engineering, 2009, 0(6): 1267-1273 |
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| Authors: | CHEN Fan HE Jin-liang ZHANG Bo CAO Lin ZHAO Jie L Jin-zhuang |
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| Affiliation: | 1.State Key Lab of Power System;Department of Electrical Engineering;Tsinghua University;Beijing 100084;China;2.Technology Research Center of China Southern Power Grid Co.;Ltd;Guangzhou 510623;China |
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| Abstract: | On the basis of the finite difference method,we put forward a numerical method that can analyze the thermal parameters of the ground electrode.The method avoids the disadvantages of the formulas which are currently used in analyzing ground electrode temperature rise and consider the electrode as a same temperature.We analyzed the thermal parameters of the common ground electrode of Yun-Guang and Gui-Guang II HVDC systems.Due to different soil parameters of three locations for the common ground electrode,the... |
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| Keywords: | ultra high voltage DC transmission thermal parameters grounding analysis numerical analysis common grounding electrode finite difference method |
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