메뉴 건너뛰기
소속 기관 / 학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
고객센터 ENG
주제분류

논문 기본 정보

저자정보
(Korea Electrotechnology Research Institute (KERI)) (Korea Electrotechnology Research Institute (KERI)) (Korea Electrotechnology Research Institute (KERI)) (Korea Electrotechnology Research Institute (KERI)) (Kyungpook National University)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제75권 제2호
오류 신고하기

피인용 0

검색

    초록·키워드

    This paper proposes an acoustic emission-based anomaly detection and statistical analysis method to detect partial discharges caused by insulation degradation inside cast resin transformers. While high-frequency current transformers and ultra-high frequency sensors offer high accuracy, they are expensive and require complex signal interpretation. In contrast, acoustic emission sensors can measure elastic waves generated within the insulation at a relatively low cost. By applying artificial intelligence techniques, data-driven anomaly detection can be achieved without complicated analysis procedures. In this study, an acoustic emission sensor was attached to the outer enclosure of a 22.9 kV cast resin transformer to acquire signals under both normal and faulty conditions. The Hilbert transform was applied to enhance impulsive characteristics, and a one-dimensional convolutional long short-term memory autoencoder model was developed for anomaly detection. Using a threshold based on the interquartile range, normal and fault signals were classified with 100% accuracy in the laboratory environment. The proposed method provides an efficient data-driven analytical framework for diagnosing insulation degradation and offers potential applications in condition monitoring and predictive maintenance of cast resin transformers.

    최근 본 자료 전체보기

      UCI(KEPA) : I410-151-26-02-096080441