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[1]李永明,王洋洋,邹岸新,等.超高压输电线工频电场计算的矩量法和表面电荷混合法 [J].电机与控制学报,2017,21(08):1-8.[doi:10.15938 /j.emc.2017.08.001]
 LI Yong-ming,WANG Yang-yang,ZOU An-xin,et al.Power-frequency electric field calculation of extra high voltage transmission lines by means of the mixed method combining MOM and SCM[J].,2017,21(08):1-8.[doi:10.15938 /j.emc.2017.08.001]
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超高压输电线工频电场计算的矩量法和表面电荷混合法
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
21
期数:
2017年08
页码:
1-8
栏目:
出版日期:
2018-01-01

文章信息/Info

Title:
Power-frequency electric field calculation of extra high voltage transmission lines by means of the mixed method combining MOM and SCM
作者:
李永明1 王洋洋1 邹岸新2 徐禄文2 付志红1
( 1.重庆大学 输配电装备及系统安全与新技术国家重点实验室,重庆 400044; 2.重庆电力科学试验研究院,重庆 401123)
Author(s):
LI Yong-ming1WANG Yang-yang1ZOU An-xin2XU Lu-wen2FU Zhi-hong1
(1.State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,Chongqing 400044,China;2.Chongqing electric Power Test&Research Institute,Chongqing 401123,China)
关键词:
矩量法 表面电荷法 超高压输电线路 复杂环境 工频电场
Keywords:
method of the moments surface charge method EHV transmission lines complex scenes power frequency electric field
分类号:
:TM 151
DOI:
10.15938 /j.emc.2017.08.001
文献标志码:
A
摘要:
结合矩量法和表面电荷法各自的优点,提出一种用矩量法—表面电荷法相结合的混合算法来计算复杂场景下超高压输电线工频电场的分布,通过综合考虑输电线路的弧垂、分裂导线等因素,建立了复杂场景下超高压输电线的三维模型,并进行了相应的计算。结果表明: 该混合法具有
提高计算速度,减少占用内存和避免模拟点电荷设置等优点。对于所述的树状物模型,树状物对其下方离地 1.5 m 处工频电场起屏蔽作用。树状物尺寸参数的变化对其下工频电场分布影响明显, 树冠半径越大其屏蔽范围越大,树干高度越高其屏蔽强度越弱。相间距和输电线高度的变化对电场值基本无影响。混合法可为高压输电线路在复杂场景下工频电场分析提供重要的参考。
Abstract:
In order to study the power frequency electric field generated by the extra high voltage(EHV) transmission lines under the condition of complex scenes,the mix method combining the method of moments and surface charge method is proposed.This method combines the advantages of both approaches,which can rapidly and accurately calculate the distribution of the power frequency electric field around the complex scenes.The sags and number of bundled conductors of the transmission line are considered.An accurate three dimensional calculation model was established.Then the power frequency electric field distributions was calculated in the paper.The simulation results show that the hybrid method,which can evidently increase speed and reduce memory,is used to calculate the power frequency electric field distribution under the condition of complex scenes.In addition,for the model of tree in the paper,because of the presence of tree,the values of the power frequency electric field off the ground 1.5m are shielded beneath the tree.The tree parameters changing has an obvious influence on the distribution of power frequency electric field.The larger the radius of crown is,the more extensive the shielding range becomes.The higher the height of trunk is,the weaker the shielding capacity becomes.The value of electric field beneath the tree isn’t changed when the phase spacing and the height of the EHV transmission lines are changed.The proposed method is available for reference to the power frequency electric field analysis of EHV transmission lines when it passes through the complex scenes.

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备注/Memo

备注/Memo:
收稿日期: 2016-03-02
基金项目: 国家自然科学基金( 51277189)
作者简介: 李永明( 1964—) ,男,博士,副教授,研究方向为电磁场理论和数值计算;
王洋洋( 1990—) ,女,硕士研究生,研究方向为电磁场数值计算;
邹岸新( 1985—) ,男,硕士,研究方向为电网电磁环境与可听噪声优化控制;
徐禄文( 1967—) ,男,高级工程师,研究方向为电网电磁环境与可听噪声优化控制;
付志红( 1966—) ,男,教授,研究方向为顺变电磁理论与仪器、电磁探测在电气工程中的应用。
更新日期/Last Update: 2017-11-20