摘要
交流特高压半波长输电是一种大容量、远距离的输电方式,在我国具有广阔的应用前景。绝缘配合研究是半波输电应用于工程建设的基础。首先,根据传输线模型,计算半波输电线路沿线的稳态电压;然后应用爬电比距法研究线路的绝缘配置方法;通过计算50%放电电压值,确定线路的工频电压空气间隙距离;最后,对操作过电压和雷电过电压,推荐相应的空气间隙距离取值。研究结果可为特高压半波长交流输电工程的实施提供技术支撑。
Ultra high voltage （UHV） half-wave-length alternating current （AC） transmission is a high available transmission capacity （ATC） and long distance power transmission technology and has a wide application prospects in China. Insulation coordination is the foundation for the engineering application of half-wave-length alternating AC transmission （HWACT）. Firstly, the steady state voltage along HWACT line is calculated based on transmission line model;then the specific creepage distance （SCD） is applied in the research on insulation configuration for HWACT line. The air gap spacing for power frequency voltage of HWACT line is determined by calculating the value of 50%discharge voltage;finally the values of air gap spacing corresponding to switching overvoltage and lightning overvoltage respectively are recommended. Results of this research are available for reference to technical support for the implementation of UHV HWACT.
出处
《电网技术》
EI
CSCD
北大核心
2014年第4期1082-1086,共5页
Power System Technology
关键词
特高压
半波长交流输电
输电线路
绝缘配合
ultra high voltage
half-wavelength AC power transmission
transmission lines
insulation coordination
