摘要
满足保护的选择性是对保护装置的一个基本要求,其目的是减小故障停电的范围,提高整个系统供电的可靠性。传统的过电流保护的选择性是依靠系统不同位置的保护装置动作时间级差来实现的,但对于两端供电和环形网络,这种方法局限性很大。本文提出的方向过电流保护能很好地解决这种问题;在阐述其基本原理的基础上,给出了系统保护模型的构建以及在实际中的应用实例。
To meet the selectivity of protection is one of the basic requirements for protection device.The purpose is to reduce the range of power failure and to improve the reliability of power supply.The traditional method depends on the position of the protection device which acts on different time.However, for both ends of power supply and ring network,it has great limitation.The paper presented the directional current protection method which can solve this problem.The construction of the system protection model and its applied example in practice were given based on its basic principle in this article.
出处
《中国西部科技》
2013年第1期26-27,共2页
Science and Technology of West China
基金
安徽国防科技职业学院<工厂供电>精品课程项目
<供配电技术>精品资源共享课程项目
关键词
继电保护
选择性
方向过电流保护装置
Relay protection
Selectivity
Directional over current protection device
