特高压半波长交流输电系统电磁暂态特性分析  

Analysis on Electromagnetic Transient Characteristics of UHV Half-wavelength AC Transmission System

作　　者：韩彬[1] 林集明[1] 班连庚[1] 项祖涛[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2011年第9期22-27,共6页Power System Technology

基　　金：国家电网公司对本项目的大力支持和资助

摘　　要：我国主要能源基地到负荷中心距离较远,接近工频半波长范围,特高压交流半波长输电可以作为超远距离、大容量电力送出的一种可选方案。基于我国特高压线路参数并参考规划中的特高压系统,建立了特高压半波长输电系统研究模型,对特高压交流半波长输电的工频过电压、操作过电压、接地故障过电压以及潜供电流等问题进行仿真研究,给出了限制过电压和潜供电流的措施。The geographical positions of main energy resources in China are far from load centers, and the distances between energy resources and load centers are close to half-wavelength of power frequencey. UHV half-wavelength AC power transmission can be regarded as one of the selectable schemes to send large capacity of electric power via long distance. Based on parameters of UHVAC transmission line in China and refering to the UHVAC transmission system being planned, a model to research UHV half-wavelength AC power transmission is built and by which such problems in half-wavelength power transmission as power frequency overvoltage, switching overvoltage, overvotlage caused by grounding faults and seconday arc current are simulated and researched. Based on the results from simulation and research, several measures to suppress these kinds of overvoltages and seconday arc current are proposed.

关 键 词：半波长输电 特高压 过电压 潜供电流 

分 类 号：TM743[电气工程—电力系统及自动化]