变电所投运过程中一种电压异常现象的分析

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作者单位:: 中原油田工程建设总公司, 河南濮阳 457001
General Engineering Construction Company of Zhongyuan Oilfield,Puyang,Henan 457001,China

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

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.

2004,3(3): 61-62 收稿日期：2004-3-29

分类号：TM63

作者简介：张华(1965-),男,湖南常德人,1988年毕业于石油大学(华东),工程师,现主要从事技术管理工作.通讯地址:河南省濮阳市大庆路122号.