直流电源双重化后的独立性  

Discussion on Independeny of duplicate configuration of DC source

作　　者：戴缘生[1] 

机构地区：[1]上海市电力公司超高压输变电公司,上海201204

出　　处：《上海电力》2011年第1期41-45,共5页Shanghai Electric Power

摘　　要：介绍了某变电站在完成直流电源双重化改造后,发生的几次特殊的直流系统绝缘异常现象,并归纳出这些电气现象的共同特征。结合直流系统的特点和绝缘监测仪的工作原理,通过电路分析的方法得出一定结论,解释了直流电源独立性破坏后的"混用"现象,并结合具体情况提出了直流"混用"时合理的处理方法。This paper presents several special examples about DC（Direct Currents） system Insulation,which happened in a double direct current system power station.Then some special electrical appearances are concluded in these examples.By the theory DC system and insulation monitoring apparatus,circuit analysis and some conclusions are make to explain the appearances.At last,reasonable suggestions and methods are taken to resolve this problem.

关 键 词：直流电源 双重化 独立性 

分 类 号：TM912.4[电气工程—电力电子与电力传动]