学术论文

      空中悬浮颗粒物对直流电晕放电影响研究现状:颗粒物覆污电极效应

      Current Status of Study on the Effects of Airborne Suspended Particles on DC Corona Discharge: Electrode-Contamination Effect of Particles

      摘要:
      空中悬浮颗粒物因荷电或气流等因素而沉积于导线表面,其将对直流电晕放电和高压直流输电线路电磁环境产生影响.当前我国大气污染日益严重,沙尘和灰霾天气频发,此时空中悬浮颗粒物剧增.与此同时,我国正在和计划在北方建设多项特高压直流输电工程.因此,开展空中悬浮颗粒物对直流电晕放电和高压直流输电线路电磁环境影响的研究具有重要意义.该文对输电线路和静电除尘研究领域内关于颗粒物覆污电极而影响电晕放电特性和线路电磁环境的相关文献,从实验方法、起晕特性、电晕电流和离子电流以及合成电场特性等方面进行梳理和总结.最后,指出当前对自然污秽成分分析、自然污秽导线电晕特性、人工模拟污秽实验方法,污秽导线的电磁环境特性和起晕特性等方面的研究存在的问题,并从实验和理论角度提出未来研究建议.
      Abstract:
      Due to being charged or airflow blowing, airborne suspended particles deposit on the surface of conductors, which has an impact on DC corona discharge and electromagnetic environment of HVDC transmission lines. This is called electrode-contamination effect of airborne suspended particles. Under the circumstances of increasingly severe air pollution and frequent occurrence of sand-dust, fog and haze, while a couple of UHVDC transmission lines being going through planning, constructing and operating, research on the effects of airborne suspended particles on DC corona discharge and electromagnetic environment of HVDC transmission lines is important theoretically and practically. A detailed review of the literatures on electrode-contamination effect of suspended particles in the fields of transmission lines, electrostatic precipitation from the aspects of experimental methodology, corona onset characteristic, corona current and ionic flow current as well as total electric field was presented. This paper also pointed out the problems concerning the analysis of natural contaminants, the corona discharge characteristics of naturally contaminated conductors, the experimental methodology of artificial contamination, and the electromagnetic environment characteristic and the corona onset characteristic of contaminated conductors. At last, the suggestions for the future research were given.
      Author: LU Jiayu HE Kun JU Yong XIE Li MA Xiaoqian
      作者单位: 中国电力科学研究院,北京市海淀区,100192
      刊 名: 中国电机工程学报 ISTICEIPKU
      年,卷(期): 2015, 35(24)
      分类号: TM85
      在线出版日期: 2016年2月25日
      基金项目: 国家电网公司科技项目(GYB17201400178).Project Supported by State Grid Corporation of China