Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2002.07a
- /
- Pages.213-215
- /
- 2002
An Advanced Compensating Algorithm of the Secondary Current of CTs
개선된 변류기 2차 전류 보상 알고리즘
-
Kang, Yong-Cheol
(Chonbuk National University, NPT Center)
;
-
Lim, Ui-Jai
(Chonbuk National University, NPT Center)
;
-
Yun, Jae-Sung
(Chonbuk National University, NPT Center)
-
강용철
(전북대학교 전자정보공학부, 차세대전력기술연구센터)
;
-
임의재
(전북대학교 전자정보공학부, 차세대전력기술연구센터)
;
-
윤재성
(전북대학교 전자정보공학부, 차세대전력기술연구센터)
- Published : 2002.07.10
Abstract
This paper proposes an advanced compensating algorithm of the secondary current of CTs. The exiting compensating algorithm for the current transformers calculates magnetic flux using the magnetization curve. In such a case, it is difficult to compensate for distorted secondary current when a remanent flux exists in a core at the beginning of the calculation. To make up for the drawback in the existing compensating algorithm, the algorithm detects the instant of saturation using difference of the secondary current and estimates flux at the instant of the beginning of the first saturation. After that, the algorithm calculates flux and compensates for distorted secondary current.
Keywords