电气控制 罗风立:电缆线路电流速断保护原理及整定计算 中图分类号:TQ172.6 文献标志码:B 文章编号:1007-0389(2017)03-58-04【D0I】10.13697j.cnki.32-1449/tu.2017.03.024 电缆线路电流速断保护原理及整定计算 罗风立(中信重工工程技术有限责任公司河南洛阳471039) 摘要:本文就工厂企业中常见的6kV及10kV电缆线路保护误动原因进行分析,以电流速断保护理论为依据,阐述了保护误 动的原因,并结合实例说明保护定值计算中应注意的问题,对电气设计及运行人员在实际的保护配置和整定计算中具有借鉴 意义. 关键词:线路保护;瞬时电流速断;限时电流速断;容量;供电;配电网络 Principle and setting calculation of current quick breaking protection for cable line Luo Fengli(CITIC Heavy Engineering Technology Co. Ltd.Luoyang 471039 China) Abstract:In this paper the protection maloperation of mon 6 kV and 10 kV cable line protection malfunction is analysed and ac- cording to current quick break protection theory the reason of misoperation is expounded.And bined with examples the problems that we should pay attention to in calculation of protetion setting value are explained which can be used as a reference for the electrical design and operation personnel in the actual protection configuration and setting calculation. Key words:line protection;instantaneous current quick break;limited current quick break;capacity;power supply:distribution network 0前言 2线路保护原理 6kV及10kV电缆线路是现代工厂企业主要的 2.1微机型线路保护装置中的保护配置 电能输送方式,其特点是输送距离短,回路数多,线 目前,在各电力设备上,微机型保护装...
电缆线路电流速断保护原理及整定计算.pdf
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