지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 吉暻碩
- 발행연도
- 2014
- 저작권
- 한국해양대학교 논문은 저작권에 의해 보호받습니다.
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이 논문의 연구 히스토리 (3)
2014
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초록· 키워드
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This thesis dealt with the characteristics of partial discharge (PD) on High Voltage Direct Current(HVDC) in SF6 Gas. Electrode systems such as a protrusion on conductor(POC), a protrusion on enclosure(POE), a crack on epoxy plate and a free particle(FP) were fabricated to simulate insulation defects. Analysis system was designed with T-F(Time-Frequency)map algorithm programed by LabVIEW. This can analyze the measured signal into frequency and time domain.
A HVDC power supply is composed of a transformer(220V/50kV) and a diode(100kV), and a capacitor(50kV, 0.5μF). The gap between the electrodes is 3mm, and the gas pressure of SF6 was set at 3bar and 5bar. PD pulses were detected with a 50Ω resistor and their characteristics were analyzed by a digital storage oscilloscope(DSO) with the resolution of 2.5GS/s and a DAQ system with the resolution of 30MS/s.
PD pulses were distributed below 0.5MHz and 20∼40ns for POC, below 1.7MHz and 10∼125ns for POE, below 0.1MHz and 135∼250ns for crack, and below 1.6MHz and 260ns for FP electrode system, respectively.
A HVDC power supply is composed of a transformer(220V/50kV) and a diode(100kV), and a capacitor(50kV, 0.5μF). The gap between the electrodes is 3mm, and the gas pressure of SF6 was set at 3bar and 5bar. PD pulses were detected with a 50Ω resistor and their characteristics were analyzed by a digital storage oscilloscope(DSO) with the resolution of 2.5GS/s and a DAQ system with the resolution of 30MS/s.
PD pulses were distributed below 0.5MHz and 20∼40ns for POC, below 1.7MHz and 10∼125ns for POE, below 0.1MHz and 135∼250ns for crack, and below 1.6MHz and 260ns for FP electrode system, respectively.
목차
목 차 i그림 및 표 목차 iiAbstract iv제 1 장 서 론 1제 2 장 이 론 32.1 절연열화 및 부분방전 32.2 검출 기술 92.3 T-F map 15제 3 장 실험 및 분석 183.1 실험계 구성 183.1.1 전극계 193.1.2 분석시스템 223.2 부분방전 특성분석 24제 4 장 결 론 36참 고 문 헌 38
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