电压暂降问题初探

Problems of Voltage Sags

随着用电负荷的快速增长,电压敏感型负荷大量的应用于生产中,以前很少关注的电压暂降问题已经成为一项研究热点。本文介绍了电压暂降的基本概念,国际组织IEC和IEEE对电压暂降制定的相关标准,从电力供应商和电力用户两方面对电压暂降的产生原因以及应对措施进行了简单总结,介绍了DVR(动态电压恢复器)的工作原理和结构。本文还列举了一些常见设备对电压暂将的耐受程度和企业电压暂降事故实例,最后指出了电压暂降研究的热点问题。

With the rapid growth of the electrical load, a lot of voltage sensitive load application in production, the voltage sag which paid little attention before has become a hotspot. This paper introduces the basic concept of voltage sag, international organizations IEEE and IEC formulate relevant standards, how do voltage sag happen and what should be done to cope with this problem from power supplier and power users this two aspects. Introduces the work principle and structure of DVR. This paper also listed some common equipment tolerance level on voltage sag and some voltage sag accident examples. At last, it points out the research hot spot on voltage sag.