Electric misoperation frequently occurs in the power system, which may result in equipments damage, large area blackout or even personal injury.

电气误操作事故是电力系统频发性事故之一，能造成设备损坏、大面积停电和人身伤亡等重大事故。

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Aiming at blackout accident caused by the pollution flashover in large area in Liaoning electric power grid, the basic reasons have been thoroughly analyzed and found out.

针对辽宁电网发生的大面积污闪停电事故，分析、查出了造成污闪事故的基本原因为设定的污区等级及盐密值偏低。

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