一起燃机误上电保护动作案例分析

Case analysis of a gas turbine inadvertent energization protection action

南方某电厂6号机组在整套起动过程中发生“误上电”保护动作。本文通过对其保护动作数据、动作过程、故障波形进行分析,得出故障及动作原因,对该机组的电气控制系统如何避免“误上电”误动作提出改进措施,并验证了改进措施的有效性。

The protection action of“inadvertent energization”occurred in the whole starting process of the No.6 unit of a power plant in South China.In this paper,through analyzing the data of its protection action,the process of action and the fault waveform,the fault and the cause of action are obtained.The improvement measures for the electrical control system of the unit and how to avoid the wrong operation of“inadvertent energization”are put forward,and the effectiveness of the improvement measures is verified.