电压暂降事故影响分析

李国文（茂名天源石化有限公司，广东省茂名市 525000）

Analysis of Impact of Voltage Dip Accident

LI Guowen（Maoming Tianyuan Petrochemical Co.,Ltd.,Maoming 525000,Guangdong Province，China）

Abstract： Regarding the voltage dips of 35 kV dual power supply system lines in a petrochemical plant,the impact of voltage dips on the 35 kV,10 kV

and 0.38 kV power systems and electric equipment is discussed in combination with the statistical data of relevant equipment, and an analysis and summary about the cause of the fault is done.

Key words：voltage dip;earth fault;fault analysis;35 kV power supply system;power fast switching device;anti‑interference contactor;waveform‑recording device; power quality  

摘　要：针对某石油化工厂35 kV双电源供电系统线路出现电压暂降故障，结合相关设备统计数据，探讨电压暂降对35 kV、10 kV、0.38 kV电力系统和用电设备的影响，并对故障原因进行分析、总结。

关键词：电压暂降；接地故障；故障分析；35 kV供电系统；电源快切装置；防晃接触器；录波装置；电能质量

中图分类号：TU851      　　  　  文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2021.12.011