双重化直流系统中直流混用现象探讨  

Discussion about mixed use of different direct currents in double direct current system

作　　者：戴缘生[1] 荣吉良[1] 林思海[1] 

机构地区：[1]上海电力公司超高压输变电公司,上海201204

出　　处：《电力系统保护与控制》2009年第5期84-88,95,共6页Power System Protection and Control

摘　　要：列举了发生在某变电站完成直流系统双重化改造后,发生的三次因直流混用而导致的直流系统绝缘异常案例,并归纳出直流混用发生的电气现象。然后,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,解释了直流混用时的现象。最后结合具体情况提出了直流混用时合理的处理方法。This paper presents three examples about mixed use of different direct currents, 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 given to explain the appearances. At last, reasonable suggestions and methods are taken to resolve this problem.

关 键 词：双重化 直流系统 混用 

分 类 号：TN86[电子电信—信息与通信工程]