特高压及超高压同塔输电线路相角差的分析计算  

Analysis and Calculation of Phase Difference of UHV / EHV Transmission Lines on Same Tower

作　　者：吴庆华[1] 张光翔 陈宏明[1] 马进霞[1] 李悝[1] 

机构地区：[1]中南电力设计院,湖北武汉430071

出　　处：《四川电力技术》2015年第2期16-18,31,共4页Sichuan Electric Power Technology

摘　　要：相角差是1 000 k V/500 k V同塔混压线路设计要考虑的众多因素中的一个,必须对此研究。通过建立合适的模型可以对影响相角差的因素进行分析计算。计算结果表明,系统潮流和线路长度是主要原因。在满负荷条件下,变压器的影响在5°左右,300 km线路的相角差在5°左右。特高压超高压同塔输电线路设计计算条件建议可按相角差10°考虑最大影响。The phase difference is one of the factors which should be considered when designing multi - circuit transmission lines with dual voltage 1 000 kV/500 kV on the same tower. A suitable model is established to analyze and calculate the factors influencing the phase difference. The calculation results show that power system flow and length of transmission line are the major factors. Under full load, the impact of transformer on phase difference is about 5° and the phase difference of 300 km line is about 5°. It is suggested that a phase difference of 10° could be a reference for overvoltage calculation of UHV/ EHV transmission lines on the same tower.

关 键 词：多回路 相角差 特高压 输电线路 

分 类 号：TM726.1[电气工程—电力系统及自动化]