氯碱企业供电系统内部过电压的分析及其防护措施  

Analysis of internal overvoltage in power supply system for chlor-alkali enterprises and prevention measures

作　　者：耿庆鲁 

机构地区：[1]德州实华化工有限公司,山东德州253007

出　　处：《氯碱工业》2016年第10期17-19,23,共4页Chlor-Alkali Industry

摘　　要：在中性点不接地运行方式的10 kV供电系统中,过电压现象是普遍存在的。其中操作过电压和谐振过电压是10 kV供电系统电气设备的主要威胁。针对这两种过电压,采取在电压互感器PT上加装二次微机消谐装置,在10 kV母线上加装智能型接地补偿装置以及在电动机、变压器侧加装过电压保护器等办法,避免防护过电压对10 kV供电系统的威胁。Overvoltage was a common problem in a lO-kV power supply system with ungrounded neutral. Switching overvohage and resonance overvohage were major threats against electrical devicesused in the lO-kV power supply system. In order to eliminate the two kinds of overvoltage to avoid threats of overvoltage against lO-kV power supply system, a secondary microcomputer harmonic elimination device was added to potential transformer, an intelligent earthing compensation device was added to lO-kV bus bar, and overvoltage protectors were added to electric motors and transformers.

关 键 词：整流装置 过电压 消谐器 接地补偿 

分 类 号：TQ114[化学工程—无机化工] TM727.3[电气工程—电力系统及自动化]