포화현상을 고려한 비율차동계전기의 동특성 해석

• 영문명: Danamic characteristics of percentage differential relays considering saturation effect
• 발행기관: 강원대학교 산업기술연구소
• 저자명: 김남호(Nam Ho Kim) 김일남(Il Nam Kim) 이준창(Juhn Chang Lee)
• 간행물 정보: 『산업기술연구』vol.14, 89~100쪽, 전체 12쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 1994.09.30

영문 초록

The effects of transient inrush currents on the dynamic characteristics of percentage differential relays are studied when the ower transformers are reenergized. An algorithm of estimation the nonlinear magnetic property of power transformer and current trnasformer core are developed. Using this method, we can analyze the effect of inrush currents on the trip region of the percentage differential relays corresponding to the variation of the phase angle and the residual magnetism at the instant of switch closing. Test results are used to verify the availibility of the proposed algorithm. Finally a case study is performed to the 110 MVA main transformer in hydraulic power station.

목차

ABSTRACT

I. 서론

II. 돌입현상과 비율차동계전기의 일반적 특징

III. 시뮬레이션

IV. 시뮬레이션과 실험결과의 비교

V. 실 계통 적용 및 비율차동계전기의 동특성

VI. 결론

참고문헌