重冰区同塔双回交流输电线路电磁环境仿真研究  

Simulation Study on Electromagnetic Environment of AC Double-circuit Transmission Lines in Heavy Icing Area

作　　者：谢庆[1] 任洁[1] 李至峪 王幼男 黄河[1] 王楠 XIE Qing REN Jie LI Zhiyu WANG Younan HUANG He WANG Nan(Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Hebei Baoding 071003, China Guizhou Electric Power Design Institute ＆ Research Institute, Guiyang 550002, China)

机构地区：[1]华北电力大学河北省输变电设备安全防御重点实验室,河北保定071003 [2]贵州电力设计研究院,贵阳550002

出　　处：《高压电器》2017年第8期9-16,共8页High Voltage Apparatus

基　　金：国家自然科学基金项目(51307060);河北省自然科学基金面上项目(E2015502081)~~

摘　　要：随着输配电网电压等级的提高和覆盖范围的扩大,电磁环境与线路覆冰问题日益突出,而目前对于覆冰条件下输电线路的电磁环境特性关注较少。为此文中使用SES-Enviro Plus软件,针对重冰区220 kV同塔双回交流输电线路电磁环境进行仿真计算。通过改变相间距离、分裂根数、子导线外径、分裂间距、导线高度,研究了不同参数对电磁环境的影响,并对比了有/无覆冰时的电磁环境差异。仿真结果表明:在文中所取参数区间内,仅有电场强度超出限值;导线覆冰会使线路周围电磁环境恶化,但不改变线路参数对电磁环境的作用规律。针对重冰区220 kV同塔双回线路设计,笔者从电磁环境的角度出发提出了相关建议。该研究结果对重冰区输电线路设计具有指导意义并能提供一定的定量依据。With the increasing voltage levels and growing coverage of transmission lines,the problems of electro- magnetic environment and icing become worse.However,less attention has been paid to the electromagnetic envi- ronment of transmission lines in icing condition. Therefore, a simulation analysis on the electromagnetic environ- ment of 220 kV AC double-circuit transmission lines in heavy icing area is conducted in this study by means of the software SES-EnviroPlus. The effects of the parameters, such as phase distance, split number, conductor diameter, bundle interval and conductor height, on the electromagnetic environment are investigated, and the characteristics of the electromagnetic environments with and without icing condition are compared.The results show that among the four environmental parameters,only electric field intensity is beyond the limit.A conclusion is drawn that the electromagnetic environment becomes worse in icing area, but the effect rules of the parameters on the electromag- netic environment remain the same.In addition,some suggestions for the design of 220 kV AC double-circuit trans- mission line in heavy icing area are offered in respect of electromagnetic environment.

关 键 词：电磁环境 同塔双回 覆冰 电场强度 SES软件 

分 类 号：TM75[电气工程—电力系统及自动化]