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가정용 연료전지 시스템의 단독운전 시 부하설비의 전압 및 전력품질 평가
박찬엄(Chan-Eom Park),정진수(Jin-Soo Jung),한운기(Woon-Ki Han),송영상(Young-Sang Song),임현성(Hyun-Sung Lim),김춘삼(Choon-Sam Kim),임덕규(Duk-Gyu Lim) 대한전기학회 2013 전기학회논문지 Vol.62 No.12
Recently, due to the excessive use of fossil fuels, many studies about the fossil fuels such as solar and fuel cell energy source are progressing. Fuel cell system has high energy conversion efficiency. Also, fuel cell system is environmentally friendly system because the carbon emission is almost not occur. Therefore, the fuel cell system is considered as the core technology of in the fields of the future energy and environmental. Fuel cell system has an effect on distribution power system because another power source of other than large power plants. So, fuel cell system can be reason of power quality in the power system. In this paper, we constructed the system for an assessment on Islanding. The system is composed with power source, Impedance coordination load and linear load, fuel cell system. we are performed assessment on voltage and power quality in customer and the distributed power system during the Islanding of residential fuel cell system. In addition, no change in the impedance of power system, we made a islanding condition only using the actual load, As a variation of generation and load current under islanding, an analysis results based on assessment system showed that the power qualities of distribution system became more aggravation as effect of voltage sag and voltage swell phenomena.
가정용 연료전지 시스템의 계통연계 시 수용가 및 배전계통에서의 고조파 영향 평가
박찬엄(Chan-Eom Park),정진수(Jin-Soo Jung),한운기(Woon-Ki Han) 대한전기학회 2011 전기학회논문지 Vol.60 No.6
Recently, due to the use of fossil fuels for electric power production, carbon emissions increased excessively. Thereby, in order to replace fossil fuels, many studies about fossil fuels such as solar and fuel cell energy source are progressing. Fuel cell system has high energy conversion efficiency. Also, fuel cell system is environmentally friendly system because the carbon emission is almost not occur. Therefore, the fuel cell system is considered as the core technology of in the fields of the future energy and environmental. Fuel cell system has an effect on distribution power system because another power source of other than large power plants. So, fuel cell system can be degradation reason of power quality in the power system. In this paper, we constructed the system for an assessment on harmonics effect. The system is composed with power source, harmonics generation and linear load, fuel cell system. we also performed assessment on harmonics effect in customer and the distributed power system during grid connection of residential fuel cell system. An assessment cases are divided into three. A Case 1 is state that residential load and fuel system are connected to grid, Case 2 is state that residential load and harmonics load are connected to grid, and Case 3 is state that all loads are connected to grid. As a output of fuel cell system is increase, analysis results based on assessment system showed that power quality became more aggravation as effect of harmonics.
STC 보정기법 적용 및 설비 손실을 고려한 태양광 발전설비 진단
박찬엄(Chan-Eom Park) 한국산업기술융합학회(구. 산업기술교육훈련학회) 2021 산업기술연구논문지 (JITR) Vol.26 No.4
Recently, Korea announced the Renewable Energy 3020 Implementation Plan in response to the global energy transition with regard to climate change. This has added to the ever‑increasing shift towards renewable energy as stakeholders strive to conform to similar policies, such as the Korean version of the Green New Deal and the president s declaration of carbon neutrality by 2050. As the cost of photovoltaic technologies continues to fall in the wake of these directives and incentives, the demand for photovoltaic power units is expected to increase significantly in future. For accurate diagnosis of the penetration of a photovoltaic power plant, in the case of a module, the exact state can be determined only by measuring in the STC (standard test condition) state; the loss occasioned by changes in the installation environment must also be considered. Accordingly, we propose a novel diagnostic approach applying voltage and current compensation techniques as well as the loss resulting from the gradual degradation of solar farms.