电网技术2012，Vol.36Issue(3)：9-14,6.
1000kV紧凑型输电线路的电气参数及电磁暂态分析
Analysis on Electrical Parameters and Eletromagnetic Transient of 1 000 kV Compact Transmission Line
王晓彤 1班连庚 1林集明 1项祖涛 1郑彬1
作者信息
- 1. 中国电力科学研究院,北京市海淀区100192
- 折叠
摘要
Abstract
Electrical parameters, power frequency overvoltages, secondary-arc currents, switching surges and so on of inverse triangle arranged 1 000 kW compact transmission lines are analyzed and compared with those of conventional types of transmission lines. Comparison results show that the compact transmission lines possess higher natural power and their electrical parameters are balanced better. To meet the demand on restricting power frequency overvoltage and secondary-arc current, it is necessary for compact transmission line to possess higher capacity of high voltage shunt reactor and larger reactance value of grounding reactor connected to the neutral. It is found in the research that the neutral voltage of high voltage shunt reactor for 1 000 kV compact transmission lines is high, and in the calculation example of this paper it exceeds corresponding withstand voltage level in ultra high voltage （UHV） pilot project. For this reason, it is recommended to properly enhance the insulation level of the neutral of high voltage shunt reactor for 1 000 kV compact transmission lines. Besides, in view of that the phase spacings of compact transmission lines are obviously less than those of conventional transmission lines, so it is necessary to check the inter-phase insulation level. If necessary, the four-star connection of metal oxide arresters （MOA） could be adopted to restrict the inter-phase switching surge of compact transmission lines.关键词
1/000/kV输电线路/紧凑型线路/电气参数/工频过电压/潜供电流/操作过电压Key words
1 000 kV transmission line/compacttransmission line/electrical parameters/power frequencyovervoltage/secondary-arc current/switching surge分类
信息技术与安全科学引用本文复制引用
王晓彤,班连庚,林集明,项祖涛,郑彬..1000kV紧凑型输电线路的电气参数及电磁暂态分析[J].电网技术,2012,36(3):9-14,6.
