摘要
针对中原油田濮城35kV/6kV快装变电所投运过程中,6kV母线送电后电压互感器二次侧三相对地电压不平衡的情况,进行分析,结论是:在中性点不接地系统中,电压异常现象是由电压互感器的参数与系统各相对地的电容参数配合不当引起的,并据此提出了处理方法。
When Pucheng 35 kV/6kV transformation substation of Zhongyuan oilfield went into operation, the secondary three-phase voltages referred to earth of a voltage mutual inductor were in the state of imbalance after the electricity had been sent to bus line. This phenomenon is theoretically analyzed in this paper and the conclusion is got that the voltage abnormity in the system without neutral point connected to earth is caused by parameter mismatching between voltage mutual inductor and phase-to-earth capacitances of the system. Hereby the corresponding improvement measures are provided.
出处
《石油工程建设》
北大核心
2004年第3期61-62,共2页
Petroleum Engineering Construction
关键词
变电所
电压异常
原因分析
改进措施
transformer substation
voltage abnormity
cause analysis
improvement measure
