美加“8·14”大停电教训和启示——兼谈华东电网化解“8·29”和“9·4”重大风险

Lessons learned and enlightenment obtained from blackout occurred on August 14th in U.S. and Canada

20 0 3年 8月 1 4日发生在美国和加拿大东部互联系统的大面积停电事故被认为是有电力系统以来最严重的电网事故之一。通过对大停电事故发生和发展机理的分析 ,得出了本次大停电事故是由潮流大范围转移导致地区电压崩溃所致的结论。并针对电网运行提出了应从美加大停电事故中吸取的教训。在此基础上 ,结合华东电网的实际情况 ,特别是针对华东电网“8.2 9”和“9· 4”多次故障重大风险的处理 ,从技术和管理两个层面提出了美加大停电对华东电网安全生产工作的具体启示 ,最后给出了加强华东电网安全运行工作的诸项建议。

The blackout,which occurred in the northeast of US. and Canada in the East Interconnection on Aug 14,is one of the most serious outages in history.Through the analysis of the whole process of the outage,the conclusion was made that large power flow reverse and the voltage collapse followed is the major cause of the outage.Some lessons which Should be learned from the outage were also discussed.Furthermore,some ideas,combining the situation of East China Grid,especially the solution process on Ang 29th and Sept 4 power grid emergency events in East China,were presented from the view of technology and management respectively.In the end,several valuable suggestion on how to ensure the security and improve the stablility of East China Grid was given.