摘要
本文给出了±500kV葛—上试验线路实测的线路电晕损失及其概率分布曲线。阐述了线路电晕损失与运行电压的关系,并对计算值和实测值的比较、计算公式的特点、误差和适用范围做了分析。同时,对风速等因素对电晕损失的影响也作了介绍。此外,指出当葛—上线路低负荷运行时,降低运行电压能够减少线路能量损失,并改善线路环境影响.
The corona loss measured on "Gezhouba-Shanghai" ±500kV HVDC test line and its probabilistic cuves are presented in this paper. The relation between corona loss and operating voltage have been illustrated, the calculated results were compared with the measured ones, the characteristics, error and the scope of application of the formulae were analyzed. The influence of the wind velocity on corona loss was described. We suggest that when "G-S" HVDC line is light-loaded, a decrease of.operating voltage can reduce the energy loss and the environmental effects from HVDC line can be improved.
