Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2013.11a
- /
- Pages.258-259
- /
- 2013
Sag & Swell Detection by Phase Voltage Compensation in 3-Phase Unbalanced Grid
3상 불평형 계통에서의 상 전압 보상을 통한 Sag 및 Swell 검출
- Kim, Min-Gi (Sungkyunkwan University) ;
-
Kim, Jun-Gu
(Sungkyunkwan University)
;
-
Jung, Yong-Chae
(Namseoul University)
;
-
Won, Chun-Yuen
(Sungkyunkwan University)
- Published : 2013.11.15
Abstract
Load connection or disconnection makes instantaneous sag & swell in 3-phase grid. When unbalance state occurs, between sensed phase voltage and actual phase voltage may have discrepancy. It makes difficult to detect accurate sag & swell, so it is hard to satisfy the standard for switching ESS system to UPS mode. In this paper, we analyzed unbalanced 3-phase voltage, and compensated the actual sag & swell magnitude.
Keywords