核电厂安全级DCS供电过负荷保护浅析

Analysis of Power Supply Overload Protection of Nuclear Power Station Safety DCS

安全级DCS作为保障核电厂安全至关重要的部分,对低压保护设备的供电可靠性、连续性要求较高。本文介绍了过负荷保护的原理,同时介绍了常用过负荷保护设备的特点,随后根据安全级DCS各设备对供电过负荷保护的要求,分析了常用保护设备的选择方法和适用条件,最后提出了一种过负荷保护的典型设计。

Safety DCS is an important part of nuclear power plant for safeguard,it requires high reliability and continuity of power supply for low voltage protection.This paper introduces the principle of overload protection,the characteristics of overload protection equipment are also introduced.Then,according to the requirements of safety DCS equipment foe power supply overload protection,the selection method and applicable conditions of common protection appliances are analysed,and a typical design of overload protection is presented at last.