印度“7.30”、“7.31”大停电事故分析及启示

2012年7月30和31日,印度发生了世界范围内影响人口最多的大规模停电事故。两次事故均起源于北部和西部电网400 kV联络线线路跳闸,随后发生的连锁故障导致电网崩溃,大停电事故对北部、东部、东北部造成严重影响。文中介绍事故前印度电网的运行状况及事故的起因、经过、恢复等情况,从技术、管理和体制方面分析事故发生的原因,并结合我国电网实际,提出保障电网安全稳定运行、防止大停电事故发生的建议。

Analysis and Lessons of the Blackout in Indian Power Grid on July 30 and 31, 2012

On July 30 and 31,2012,two widespread blackouts occurred in India.The blackouts affected the largest number of people so far.The two successive blackouts were both caused by the trip of a certain 400kV line of inter-regional corridors between northern and western grids.Subsequent faults resulted in breaking down of the power grids.The blackouts influenced the power supply of northern,eastern,and northeast grids.The pre-fault situation of Indian power grid,cause,spread,and restoration of the blackouts were described.Furthermore,the reasons of the blackouts were analyzed in detail from the aspects of technology,management and structure.Finally,certain suggestions to ensure the security and stability of China power grid and prevent the occurrence of blackout in China were proposed.