武南变所用电系统备自投回路的分析及改进  

Analysis and Improvement for Stand-by Circuit of Self-demand System in Wunan Substation

作　　者：钱波[1] 何正兴[1] 俞澄一[1] 

机构地区：[1]常州供电公司,江苏常州213003

出　　处：《江苏电机工程》2010年第1期33-35,共3页Jiangsu Electrical Engineering

摘　　要：通过分析500 kV武南变所用电系统备自投的原理及其回路构成,讨论了当所用变高压侧失电时,低压侧的电压变化情况,并针对备自投回路中存在的问题,提出了改进完善的方法和措施。完善后的备自投回路能够满足所用电在高压侧任意一相失电的情况下都能够自投成功,保证了所用电系统的正常运行。Based on the analysis of the principle and circuit structure of stand-by system,the voltage variation of the low-voltage side at the condition that the high-voltage side loses power supply is discussed in the paper.Focusing on the problems existing in stand-by system,measures for the improvement of the system are proposed.The improved stand-by circuit can be operated successfully when the circuit of high-voltage side is interrupted at any single phase.The reliability of self-demand system is guaranteed.

关 键 词：所用电 备自投 单相失电 

分 类 号：TM63[电气工程—电力系统及自动化]