发电厂直流系统接地故障分析及处理措施研究

Research on Analysis and Treatment Measures of Ground Faults in DC System of Power Plant

对于发电厂而言,直流系统的作用在于为信号回路、继电保护、控制回路等提供稳定可靠的电源,但在多种因素的影响下容易发生接地故障,若不能及时有效地处理则会干扰发电厂的正常运行。文章从发电厂直流系统接地故障的原理出发,分析了常见的故障检测法,并就如何处理故障作了探讨,以供参考。

For power plants,the role of the DC system is to provide stable and reliable power for signal circuit,relay protection,control loops,etc.However,it is prone to ground faults under the influence of various factors.If they cannot be dealt with in time and effectively,it will interfere with the normal operation of power plants.Starting from the principle of ground fault in the DC system of a power plant,the common fault detection methods were analyzed and the problems of how to deal with faults was discussed for reference.