中外应对电网冰灾事故措施对比分析

Comparative Analysis on Measures Taken by China and Other Countries to Cope with Power Grid Blackouts Caused by Ice Storms

2008年初,我国出现的大面积灾害性冰雪天气对电网造成了严重破坏,影响了电网的安全运行和有序供电。通过对我国和其他国家尤其是加拿大针对类似极端气象条件的应对方法和事后举措的比较,在电网设计标准、安全控制措施、应急机制等方面进行重点分析,针对冰灾等自然灾害提出了电网在规划、运行和管理方面的一些建议。在当前全球极端气象条件频现的背景下,以期能够对我国电网处理自然灾害和突发性电网事故提出一些有益的应对思路。

China saw large-scale snowy weather during the start of 2008. Due to severe ice coating of the transmission lines, power grids were severely damaged in the disaster-stricken areas including China＇s southern, central and eastern grids where multiple lines suffered tower crashes and line cuts. Comparing both the preventative and remedial measures adopted in China and other countries, especially Canada, to deal with large-scale power grid damages caused by prolonged extreme weather of low temperature, rain, snow and ice, this paper focuses its study on the design standards, safety control measures and emergency response mechanism, and it presents some advice on power grid planning, operation and management in order to rebate the impacts of ice storms. Considering extreme weather disasters happening more frequently than ever, this study is expected to present some helpful measures for China＇s power grids to cope with natural disasters and incidental line cuts.