Some representative custom power devices, such as SSCB, DSTATCOM, DVR and UPQC, together with their working principle and application conditions in transient power quality improvement, are introduced in this paper.

• 在此基础上介绍了几种具有代表性的用户电力设备（如SSCB,DSTATCOM,DVR,UPQC等）的工作原理及国内外利用其在改善暂态电能质量中的应用情况。