Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2003.07b
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- Pages.1114-1116
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- 2003
The Characteristics of Voltage Sag and a Study about Detection Algorithm Using the DQ Transformation
Voltage sag의 특성과 dq좌표변환을 이용한 검출법에 대한 연구
- Kim, Yong-Sang (Dept. of Electrical Engineering. Chungnam National University) ;
- Kim, Do-Hun (Dept. of Electrical Engineering. Chungnam National University) ;
- Yim, Sang-Wook (Dept. of Electrical Engineering. Chungnam National University) ;
- Lee, Kyo-Sung (Dept. of Electrical Engineering. Chungnam National University) ;
- Kim, Yang-Mo (Dept. of Electrical Engineering. Chungnam National University)
- Published : 2003.07.21
Abstract
Voltage sags are known as a serious problem causing mal-operation of equipment like computers, process controllers and adjustable-speed drives. In this paper, characterization of voltage sag and an overview of methods used in the mitigation of voltage sags are presented. Moreover a fast detection method for voltage disturbances is explored. The algorithm is based on the theory that allows a set of three-phase voltages be converted the d-q value. The utility input voltages are sensed and then converted to some quantities in the d-q transformation. And the difference between reference value and input value are showed that some disturbances happened in the system.
Keywords