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태양광 발전설비의 침수 시 설비영향 및 전기적 안전성 평가
박찬엄(Chan-Eom Park),정진수(Jin-Soo Jung),한운기(Un-Ki Han),임현성(Hyun-Sung Lim),송영상(Young-Sang Song) 한국조명·전기설비학회 2014 조명·전기설비학회논문지 Vol.28 No.12
The photovoltaic power system is performing power generation by being installed in outdoors. Therefore it has the characteristics affected by environmental factors. In particular, if the solar power generation facility connected to the grid, the power can be generated continuously in a state of being secured operating voltage of the inverter and solar irradiation. In that case, if an abnormal situation such as flooding or heavy rains has occur, the possibility of electric shock or damage of facilities due to current leakage or a floating matters is present. In this paper, we performed electrical safety assessment about the connection part, junction box and cable of the solar module when the solar power system was flooded. we also assessed whether or not the leakage current is occurred in case of the cable was damaged. As a result, in case of the leakage current is large, we can be known that it is the risk of electric shock as well as cause of inverter damage.
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.
전기화재 예방과 신속 감지를 위한 추론기반 지능형 수배전반 시스템 구현 연구
박찬엄(Chan-Eom Park),김경동(Kyung-Dong Kim),이승철(Seung-Chul Lee),양원영(Won-Young Yang) 한국조명·전기설비학회 2006 한국조명·전기설비학회 학술대회논문집 Vol.2006 No.5월
With the fast growing number of skyscrapers and large ultrahigh apartment complexes, the concerns on fire caused by electricity also grow. Among about 30,000 fires recorded annually, roughly one third of them are known to be caused by electricity. If one of such high and densely populated buildings or apartments catches a fire, the consequence can potentially be quite catastrophic. However, with the rapid development of the techniques in the fields of communications and computers, electric power distribution systems for such buildings and apartments have been largely digitalized in recent years. More detailed informations on the operating status are now available, which enables more sophisticated monitoring and early detection of potential fire caused by electricity. In this paper, we present an inference technique that can be used as one of the basic techniques in building intelligent distribution panel systems that can effectively monitor, prevent and detect the occurrence of fire caused by electricity. The technique can accommodate production rules in linguistic expressions on high abstraction levels. Fire finding strategies can be easily modified to provide more effective countermeasures. Simulation results show that inference capabilities and thus the capability of fire monitoring in power distribution panel systems can be significantly enhanced with our approach.
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.
신속한 상정사고 해석을 위한 병렬 연산기반 멀티 에이전트 시스템 구현
박찬엄(Chan-Eom Park),이영혁(Young-Hyuck Lee),이승철(Seung-Chul Lee),문운철(Un-Chul Moon) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.11
점차 대형화 및 복잡화되어 가고 있고 구조 개편에 따른 다양한 운용주체들의 참여에 따라 전력계통의 보다 신속하고 정확한 운용 상태의 파악과 효과적인 사고 대처의 필요성이 중대되고 있다. 전력계통의 운용 상태에 대한 정확한 판단과 특히 근래에 자주 발생되고 있는 광역정전에 보다 효과적으로 대처하기 위해서는 많은 경우의 상정사고들뿐만이 아니라 각 상정사고 후에 발생할 가능성이 큰 후속 고장들에 대해서 까지도 분석할 필요성이 있다. 이를 위해서는 발생 가능성이 큰 사고 및 사고 시 계통에 큰 영향을 줄 수 있는 사고들의 선정 및 이들의 해석 우선순위를 신속히 결정할 수 있고 사고 해석에 소요되는 시간을 대폭 감소시킬 수 있는 시스템의 구현이 요구된다. 본 논문에서는 많은 시간이 소요되는 상정사고 및 그로 인한 일련의 파급 가능 사고들에 대한 해석을 신속히 수행하기 위한 병렬연산 기반 멀티 에이전트 시스템을 제안한다.
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.
아크로 인한 전기화재의 예방을 위한 아크 차단기의 동작 신뢰성 평가
박찬엄(Chan-Eom Park),유재근(Jae-Geun Yoo),구자철(Ja-Chul Goo),김형석(Hyung-Seok Kim) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.10
아크는 전기 사고 발생 시 경제적 손실 및 인명 피해에 직접적으로 영향을 주는 전기화재의 주요원인 중 하나로써 일반적으로 아크 고장 발생 시 고온을 발생시키고 그로인해 아크발생지점 주위에 존재하는 인화성 물질이나 기타 발현 가능성이 있는 물질을 점화시킴으로써 화재의 규모가 파급되어 큰 사고를 초래할 수 있다. 본 연구에서는 아크사고를 사전에 예망하기 위하여 개발되고 실제 환경에 적용하기 위한 아크차단기 성능 시험의 국제 규격인 미국의 UL 1699를 기반으로 국내 환경, 즉 시험에서 사용하는 부하 및 케이블 등을 고려하여 과제 연구 중 개발된 아크차단기에 대한 동작 시험을 수행하였다. 아크차단기에 대한 시험을 수행한 결과, 직렬 및 병렬 아크 시험 그리고 정상적인 부하 사용 시 발생할 수 있는 유사 아크에 대한 성능 시험에서 정상적으로 동작하였으며 이로써 차단기에 대한 신뢰성을 검증하였다.