核电厂核岛直流系统保护与监控分析

Analysis of Protection and Monitoring of DC System in Nuclear Power Plant

核岛直流系统对核电厂安全稳定运行起到至关重要的作用。本文以某核电厂为例,对核岛直流系统的基本设置、短路保护类型、和保护开关的选择及整定原则做了简要介绍,同时结合核电厂的实际设计参数,详细阐述了直流系统的电流保护配合方案,以及直流系统的监控设置要求。

DC system plays a vital role in the safe and stable operation of nuclear power plants.Taking a nuclear power plant as an example,this paper briefly introduces the basic settings of the nuclear island DC system,the type of short-circuit protection,and the selection and setting principle of the protection switch.At the same time,combined with the actual design parameters of the nuclear power plant,it expounds in detail the current protection cooperation scheme of the DC system,as well as the monitoring and setting requirements of the DC system.