特高压电网的过电压与绝缘配合  

Overvoltages and insulation coordinations in UHV transmission grid

作　　者：崔玉[1] 万亦如[2] 

机构地区：[1]江苏省电力公司,江苏南京210024 [2]浙江大学电气工程学院,浙江杭州310027

出　　处：《能源工程》2010年第5期21-24,共4页Energy Engineering

摘　　要：随着我国电力需求的快速增长,建设特高压电网已成为解决电网发展需求的必然选择。而限制特高压输电系统的过电压水平,合理选择绝缘水平是特高压输电工程建设的关键课题。从工频过电压、潜供电流、操作过电压、雷电过电压和绝缘配合这几方面全面分析了中国特高压交流电网的过电压与绝缘配合问题。分析认为,特高压交流输电在过电压及绝缘配合具有特殊性,但通过合理配置相关设备、优化线路和变电站设计可以满足要求,在技术上也是可行的。Because of the rapid growth of electric power demand in China,to build a strong ultra high voltage（UHV） power grid is becoming necessary.The restriction of overvoltages and the proper selection of insulation coordinations in UHV transmission grid are the key subject of UHV transmission grid.Issues concerning power frequency overvoltage,seconary arc current,switching overvoltage,lightning overvoltage and insulation coordinations were discussed.As the conclusion points out,the overvoltages and the insulation coordinations in UHV transmission grid have their unique problems,but these problems can be correctly solved along with the development of related techniques.

关 键 词：特高压交流输电 过电压与绝缘配合 工频过电压 潜供电流 操作过电压 雷电过电压 

分 类 号：TM723[电气工程—电力系统及自动化]