南方电网主网架热稳定和短路电流超标问题分析  

Analysis on the Problems of Thermal Stability and Standard-Exceed Short Circuit Current in the CSG Main Grid

作　　者：李勇 姚文峰 杨柳 胡飞雄[2] 吴伟杰 刘小江 李悝[4] 申敏[5] 

机构地区：[1]南方电网科学研究院,广州510080 [2]中国南方电网有限责任公司,广州510623 [3]西南电力设计院,成都601021 [4]中南电力设计院,武汉430071 [5]广东省电力设计研究院,广州510663

出　　处：《南方电网技术》2013年第2期21-25,共5页Southern Power System Technology

摘　　要：以500 kV网架为主体的南方电网具有远距离、大容量、交直流混合输电的特点,且其主网架的热稳定和短路电流超标问题已经凸显。结合南方电网的运行特点,将电网中突出存在的热稳定和短路电流超标问题进行梳理分类,并针对不同类型问题,通过经济技术比较提出解决措施。此外,基于云贵两省风电的大力开发规划,分析风电送出对电网热稳定问题的影响。最后,分析了在建直流工程的潜在影响。China Southem Power Grid （CSG）, of which the main grid consists of 500 kV transmission lines, is characterized by long distance, high capacity and AC/DC parallel transmission, and there are clear problems of thermal stability and standard-exceed short circuit current in its main grid. Considering the features of CSG operation, this paper does the classification of the above problems, and proposes corresponding solutions for various classifications through economic and technical comparisons. In addition, based on the development plan of wind power in Yunnan and Guizhou, the influence of these wind power integrated to the main grid on its stability and the potential impacts of the DC projects in construction in CSG are analyzed.

关 键 词：南方电网 主网架 热稳定 短路电流 

分 类 号：TM712[电气工程—电力系统及自动化]