电压变化对两回交叉跨越直流线路地面合成电场影响的试验研究  

Experimental Research on Ground Total Electric Field Affected by the Variation of Voltages of Two Crossing HVDC Transmission Lines

作　　者：谢莉 陆家榆 赵录兴 何堃 吴桂芳 鞠勇 XIE Li;LU Jiayu;ZHAO Luxing;HE Kun;WU Guifang;JU Yong(China Electric Power Research Institute,Haidian District,Beijing 100192,China)

机构地区：[1]中国电力科学研究院有限公司,北京市海淀区100192

出　　处：《中国电机工程学报》2021年第15期5381-5390,共10页Proceedings of the CSEE

基　　金：国家电网公司科技项目“两回交叉跨越直流输电线路地面合成电场三维预测和控制技术研究”(GYB17201800203)。

摘　　要：随着中国直流输电技术的发展,高压、特高压直流线路交叉跨越的情况已频繁出现,对电磁环境的预测和控制技术提出新的挑战。为获得两回交叉跨越直流线路地面合成电场的分布特性和影响因素,亟需开展交叉跨越直流线路地面合成电场的试验研究。该文搭建4分裂导线的户外交叉跨越直流试验线段,采用阵列式布置的地面合成电场测试方式,开展导线电压变化对地面合成电场影响的试验研究,获得交叉跨越区域地面合成电场的分布特性,并总结地面合成电场随导线交叉极性、电晕程度变化的规律。研究结果可为交叉跨越直流线路合成电场的预测研究提供基础数据,为交叉跨越直流线路的设计和环境评价提供技术依据。With the development of HVDC technology in China,the crossing of HVDC and UHVDC transmission lines has occurred frequently,which brings new challenges to the prediction and control technology of electromagnetic environment.In order to obtain the distribution characteristics and influence factors of the ground total electric field of two crossing HVDC transmission lines,it is of great importance to carry out the experimental research on the ground total electric field of two crossing HVDC lines.The outdoor crossing HVDC test line was built with 4-bundle conductor,and the array arrangement of electric field measurement devices was adopted for the experimental research on the influence of conductor voltage change on ground total electric field.The distribution characteristics of the ground total electric field in the crossing area were obtained,and the effects on ground total electric field by the polarities and corona intensities of the crossing conductors were summarized.The experimental results can provide basic data for the prediction of the total electric field,and give technical support for the design and environmental assessment of the crossing HVDC transmission lines.

关 键 词：地面合成电场 导线电晕 电压变化 交叉跨越直流线路 

分 类 号：TM85[电气工程—高电压与绝缘技术]