Analysis of Hunan Power Grid Ice Disaster Accident in 2008

摘要：

In this paper, the processes of the ice disaster occurred in the Hunan power grid in 2008 are introduced in detail. The ice storm can be split into five phases, i.e. primary phase, developing phase, durative phase, climactic phase and falling down phase. The losses of transforming and transmission equipment are statistically analyzed. It reveals that the reason of line tower collapsing is due to the high average ice thickness, which is more than the designed value of conventional power lines. Moreover, the main cause of electric equipment flashover is that the dry arcing distance is low. Finally, some suggestions, e.g. optimal design of power grid structures, establishment of strategic safeguard channels, enhancement to prevent from ice flashover, are presented in this paper to enhance the ant-disaster ability for power grids.

关键词： Hunan power grid ice disaster

作者: LU Jiazheng JIANG Zhenglong ZHANG Hongxian LEI Hongcai LI Bo FANG Zhen

作者单位: Hunan Electric Power Test and Research Institute, Power Transmission Line Anti-disaster Laboratory of State Grid, Changsha, China, 410007

会议类型: 国际会议

会议名称: The International Conference on Electrical Engineering 2009(2009 电机工程国际会议)

会议地点: 沈阳

会议语种:英文

页码: 1-8

在线出版日期: 2009-07-05（万方平台首次上网日期，不代表论文的发表时间）