摘要
输电线路覆冰故障一直是困扰电网安全稳定运行的重要影响因素。2015年,山西电网共经历3次大面积冰冻雨雪天气,造成500 kV输电线路跳闸数10条次,导致部分电厂外送通道中断。为全面梳理电网薄弱环节,以山西电网覆冰故障线路为分析样本,重新进行线路抗冰能力复核,并对不满足要求的线路提出改造措施,极大地提高了电网整体抗冰能力。
Icing fault of transmission lines is an important factor that affects the safe and stable operation of power grid. Shanxi power grid experienced large area freezing and snow for three times in 2015, resulting in dozens of 500 kV transmission line tripping and some power plant delivery channel interruption. In view of this problem, this paper reviews and puts forward the improvement measures for the checking of anti-ice capacity of the fault lines, which can greatly improve the overall level of anti-ice capacity of power grid.
出处
《山西电力》
2017年第3期14-17,共4页
Shanxi Electric Power
关键词
输电线路
覆冰
复核计算
改造措施
transmission line
icing
checking calculation
transformation measures
