http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
135MVA 수력 발전기의 전력 시스템 안정화 장치 적용 효과 분석
옥연호(Yeon-Ho Ok),이은웅(Eun-Woong Lee),변일환(Ill-Hwan Byun),오석영(Sueg-Young Oh) 대한전기학회 2009 전기학회논문지 Vol.58 No.6
As national power consumption every year increases, the power plant which is in the process of planning tries to establish high-capacity generator. The power system tends to become a large size. With the progress of electronic components, the control systems of the generator have been digitalized and rapid-response control system is possible. However, the minute frequency vibration of grid occurred with the effect of rapid-response control system. To solve these problem, PPS(Power System Stability) has been introduced since 2004, and it has being installed and applied to the thermal and nuclear power plant which are high-capacity, over 800MVA. However the minute frequency vibration is gradually changed to the bigger frequency vibration by fast-action control system, and this regional frequency fluctuation might be diffused wide area. Therefore, it is applied to the hydro generator which is small with fast-action governor system, and it is necessary to control the minute frequency vibration to prevent to diffuse. In this paper, the effect will be proved by establishing PSS on the Hydro-Generator which has both digital excitation and governor system for the first time in Korea.
발전통합운영시스템 최적제어 및 시스템 구성에 관한 연구
옥연호(Ok Yeon Ho),박지군(Park Ji Kun),곽원구(Kwak Won Ku),이재흥(Lee Jae Heung) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
GIOS(Generation Integrated Operating System) is the system for observation and control of generating plant in SCADA(Supervisory Control And Data Acquisition). Major control systems in hydro power plant are Governor, AVR(Automatic Voltage Regulator), Spillway gates. besides, there is EMS(Energy Management System). Presently, most hydropower facilities are replacing because they are becoming superannuated as time passes(25 years). The existing facilities are replacing from analog type to digital type. At this point of time, this thesis is aimed at improving reliability of the facilities and setting the standard by analyzing the control method and system composition linked to GIOS(Generation Integrated Operating System).
수력발전기 On-line 부분방전 측정 시스템을 이용한 절연상태 진단의 신뢰성 향상
옥연호(Yeon-Ho Ok),이은웅(Eun-Woong Lee),임재일(Jae-Il Lim),박지군(Ji-Kun Park),곽원구(Won-Ku Kwak),이재흥(Jae-Heung Lee),신재필(Jae-Pil Shin),신병철(Byoung-Chol Shin) 대한전기학회 2009 전기학회논문지 P Vol.58 No.4
Accident dangerousness of domestic hydro power generators which are operated in Korea is on the increase because of use at the long term. On this, the Off-line diagnosis techniques developed to the On-line by continued domestic technical development since 2000. Especially, On-line insulation diagnosis of domestic hydro power generator is possible by localization of partial electric discharge sensor and On-line insulation diagnosis system. This paper shows the diagnosis result that is applied localized Ceramic Coupler and PDMS-HG(Partial Discharge Monitoring System for Hydro Generator) at four Chung-ju hydro Generator used for 25 years. Particularly, the confidence of insulation diagnosis is improved by using high frequency filter and sampling the partial discharge signals which occur in site. For reviewing the confidence of On-Line insulation diagnosis system, we measured the outside noises and partial discharge signals during practical operation by using the partial discharge diagnosis system of the Full A/D process. And we reviewed the confidence of the On-Line insulation diagnosis system by comparing and analyzing these data.
옥연호(Ok Yeon-Ho),임재일(Lim Jae-Il),박지군(Park Ji-Kun),곽원구(Kwak Won-Ku),이재흥(Lee Jae-Heung),최형철(Choi Hyeong-Cheol),이남형(Lee Nam-Hyung),신병철(Shin Byoung-Chol) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
진단기술은 기기의 열화 현상 및 이상 현상으로 진전되는 특성을 측정하여 향후 발생이 예상되는 이상을 조기에 발견하는 것을 목적으로 한다. 기기를 정밀 진단, 분석하여 잔여 수명을 평가하고 적절한 대체계획을 수립함으로써 신뢰도 향상 및 경제적인 설비 운용이 가능하다. 본 논문에서는 수력 발전기 운전 중 부분방전 진단 시스템을 이용하여 수력 발전기의 운전 중에 발생하는 부분방전 신호를 실시간으로 측정, 분석하고 수력 발전기 권선의 절연 상태를 감시 진단하여 기기의 열화 및 이상 현상등을 조기에 발견하고 발전설비의 신뢰도를 향상시킬 수 있는 방안을 제시하고자 한다.