인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Epoxy resin used in high-voltage power equipment such as molded power transformers and OF power cable joint-boxs is widely used because it has advantages in electrical insulation and stability of mechanical properties. However, when manufacturing power devices, nano and micro void defects occur, and cracks and interfacial defects occur due to thermal expansion coefficient at the interface between the conductor and epoxy microcomposite for a long period of time. In this way, the partial discharge is converted into an electrical tree and the tree is initiated. And it progresses further, ultimately resulting in insulation breakdown. Three types of insulation defects were simulated in epoxy resin: No Void, Void Gap_0.5mm samples. The applied voltage was 13kV/60Hz, and the discharge signal was measured from the voltage application through a microscope and the AE Signal measurement system when Tree-Partial Discharge occurred. To diagnose the deterioration state of Tree-Partial Discharge, the axial tree progression length was measured and evaluated throughout the entire process from the Tree Incubation Period to tree initiation, progression, and destruction. In order to evaluate the characteristics of Tree-Partial Discharge, the waveform of the AE Waveform and the result of FFT (Fast Fourier Transform) execution were converted from time-voltage (amplitude) to frequency-voltage (amplitude) function. In addition, the frequency characteristics of the waveform against the tree-deterioration time were evaluated, and the mechanisms of No Void and void discharge characteristics were analyzed.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
최근 본 자료 전체보기
UCI(KEPA) : I410-151-25-02-093113626
