http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
사우디라아비아 380㎸ XLPE Cable의 신뢰성 확보를 위한 온라인 부분방전 모니터링 시스템 구축
서인진(In-Jin Seo),이전선(Jeon-Seon Lee),김한중(Han-Joong Kim),김종철(Jong-Cheol Kim),김정윤(Jung-Yoon Kim),이현선(Hyun-Sun Lee) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
We constructed an on-line PD monitoring system for the 380㎸ U/G Cable project at the Riyad 9012 substation in Saudi arabia. The system will be monitoring the termination of the two 380㎸ XLPE Cables to prevent unexpected failure of the cable insulation. The system had been tested in the laboratory and on site for detection of various PD signals and reliability of operation. The system distinguish the existence and nonexistence of the partial discharge and then judge the source of partial discharge using automatic PD pattern recognition software.
DC Breakdown Characteristics of Silicone Polymer Composites for HVDC Insulator Applications
한병조,서인진,성재규,황영호,양해원 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.67 No.10
Critical components for HVDC transmission systems are polymer insulators, which have stricter requirements that are more difficult to achieve compared to those of HVAC insulators. In this study, we investigated the optimal design of HVDC polymer insulators by using a DC electric field analysis and experiments. The physical properties of the polymer specimens were analyzed to develop an optimal HVDC polymer material, and four polymer specimens were prepared for DC breakdown experiments. Single and reverse polarity breakdown tests were conducted to analyze the effect of temperature on the breakdown strength of the polymer. In addition, electric fields were analyzed via simulations, in which a small-scale polymer insulator model was applied to prevent dielectric breakdown due to electric field concentration, with four DC operating conditions taken into consideration. The experimental results show that the electrical breakdown strength and the electric field distribution exhibit significant differences in relation to different DC polarity transition procedures.