火力发电厂直流系统设计中的保护电器选择性配合探讨  

Discussion about Selectivity Coordination of Protective Devices in Thermal Power Plant DC System Design

作　　者：刘梓洪[1] 沈珏玮 

机构地区：[1]江苏省邮电规划设计院有限责任公司,江苏南京210019 [2]江苏新海发电有限公司,江苏连云港222023

出　　处：《现代建筑电气》2015年第4期28-32,共5页Modern Architecture Electric

摘　　要：指出了目前直流系统中保护电器选择性配合出现的一些主要问题,分析了影响保护电器选择性配合的主要因素。提出了直流系统的主要设计原则,并通过工程实例进行了保护电器选择性配合的计算,计算结果能满足保护电器选择性配合的要求。This paper pointed out some main problems with selectivity coordination of protective devices in the current DC systems,and analyzed the main factors affecting on the selectivity coordination of protective devices. The main design principles of the DC system were proposed. As a example of an power plant project,the selectivity coordination of protective devices was calculated,which can meet the requirement of selectivity coordination of protective devices.

关 键 词：直流系统 保护电器 选择性配合 小型断路器 

分 类 号：TM621[电气工程—电力系统及自动化]