한국해양대학교

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SF6가스중 HVDC에서 부분방전 특성에 관한 연구

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dc.contributor.author 김민수 -
dc.date.accessioned 2017-02-22T02:27:52Z -
dc.date.available 2017-02-22T02:27:52Z -
dc.date.issued 2014 -
dc.date.submitted 2014-03-24 -
dc.identifier.uri http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002174425 ko_KR
dc.identifier.uri http://repository.kmou.ac.kr/handle/2014.oak/8447 -
dc.description.abstract 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. -
dc.description.tableofcontents 목 차 i 그림 및 표 목차 ii Abstract iv 제 1 장 서 론 1 제 2 장 이 론 3 2.1 절연열화 및 부분방전 3 2.2 검출 기술 9 2.3 T-F map 15 제 3 장 실험 및 분석 18 3.1 실험계 구성 18 3.1.1 전극계 19 3.1.2 분석시스템 22 3.2 부분방전 특성분석 24 제 4 장 결 론 36 참 고 문 헌 38 -
dc.language kor -
dc.publisher 한국해양대학교 -
dc.title SF6가스중 HVDC에서 부분방전 특성에 관한 연구 -
dc.title.alternative A Study on the Characteristics of Partial Discharges under HVDC in SF6 Gas -
dc.type Thesis -
dc.date.awarded 2014-02 -
dc.contributor.alternativeName MIn-Su Kim -
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전기전자공학과 > Thesis
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