半波长交流输电线路电气长度人工补偿技术  

Compensation Technology for Electrical Length of Half-wavelength AC Power Transmission Lines

作　　者：焦重庆 齐磊 崔翔 

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学),北京市昌平区102206

出　　处：《电网技术》2011年第9期17-21,共5页Power System Technology

基　　金：中央高校基本科研业务费专项基金项目(09TG01);国家电网公司对"特高压半波长输电技术经济可行性初步研究"项目的支持和资助;本文为该项目研究结果的一部分~~

摘　　要：采用半波长交流输电方式时,线路送端到受端的电气距离应接近半个工频波长,当线路的自然长度不足半个波长时,需要对电气长度进行人工补偿。基于传输线理论模型,提出了T形和Π形人工补偿结构,结合某1 000 kV交流输电线路参数,计算了不同补偿长度、补偿点数及负载特性下的补偿效果。结果表明,对半波长交流输电线路进行人工电气补偿在技术上是可行的。Half-wavelength AC power transmission technology means that the electrical length between the sending and receiving ends is about one half of a power frequency wavelength. When the practical line length between the two ends is shorter than half wavelength, appropriate technology should be employed to increase the electrical length up to a half-wavelength. For this purpose, based on transmission line theory, two types of artificial compensation structure, i.e., the T-shaped structure and the H-shaped structure, are proposed. Based on actual parameters of a certain 1 000 kV AC transmisson line, the compensation effects under different compensation lengths, number of compensation points and load characteristics are calculated and analyzed. Research results show that it is technically feasible to apply compensation to half-wavelength transmission line.

关 键 词：半波长 远距离输电 电气长度 补偿技术 

分 类 号：TM734[电气工程—电力系统及自动化]