摘要
电压暂降是指供电电压幅值(有效值)短暂降低,随后恢复正常的现象。严重的电压暂降,将使用电设备停止工作,或引起所生产产品质量下降。通过对花庄220kV变电站一次电压暂降的原因进行分析研究,指出保护的正确动作也是引起电压暂降的一个重要原因,并就该企业抑制电压暂降问题的方案提出建议。
Voltage sag refers to phenomenon of supply voltage amplitude(virtual value) sagging for a short time and then recovering to its normal amplitude.Serious voltage sag will make electrical equipment stop working or lead to the production of low-quality products.Based on the analysis of the cause of 220 kV Huazhuang substation voltage sag,this article points out that the correct action of relay protection is an important reason to voltage sag either,then recommends a solution for the problem at the end.
出处
《华中电力》
2012年第3期31-32,36,共3页
Central China Electric Power
关键词
电压暂降
短路故障
继电保护
行为评价
voltage sag
short-circuit fault
relay protection
behavior evaluation
