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임용배,유태현,신동준,조기선 대한전기학회 2022 전기학회논문지 Vol.71 No.10
Natural disasters driven by extreme climate and weather events are probably the types of disasters that mankind has been best adapted to. As the intensity and frequency of events become more serious due to climate change induced by global warming, the stability of the electric power supply and the safety of electrical infrastructures are more threatened. For the sustainable development of human civilization, it is most important to accurately identify hazards in the future environment and to reduce the risks caused by those hazards. However, depending on how these risks are defined and assessed, they may be considered serious or ignored. Therefore, it is necessary not only to identify the hazards well, but also to accurately assess and adapt to the risk of each identified hazard. In this paper, a methodology for assessing and adapting to the risks posed by climate change in the field of electrical installations is presented. The risk assessment methodology will support improving the resilience of the national power grid by enabling efficient use of limited national resources required for climate change adaptation.
임용배,이기연,박원경,조성원 한국지능시스템학회 2017 한국지능시스템학회논문지 Vol.27 No.6
This paper proposes a new method for classification of the electrical loads as a part of research for the development of electrical selfcontrol safety management techniques used in apartment houses. The electric load data are obtained from CTs(Current Transformers), and a modified MFCC(Mel-Frequency Cepstral Coefficients) algorithm is used to extract feature vectors for classification of the electrical load. Based on the extracted features, neural networks are used to classify the patterns of diverse electrical loads. The original MFCC is being frequently used for speech signal processing and recognition. In this paper, MFCC is modified for the improvement of classification performance of the electrical loads. The proposed MMFCC(modified MFCC) is simpler than the original MFCC. Thus, the proposed MMFCC has the advantage that reduce the size and the processing time of the extracted feature vectors. In addoitni , it improves the classification accuracy. The experimentale rsults show the superiority of the proposed method for classification of eth electrical loads. 본 논문은 공동주택용 자율전기안전관리 기술 개발에 관한 연구의 일환으로, 전기부하 판별을 위한 새로운 방법을 제안한다. 전기부하로부터 얻어진 전류파형을 변형된 MFCC를 이용하여 신호 처리하여 전기부하 판별을 위한 특징벡터를 추출하고, 신경회로망을 이용하여 다양한 전기부하의 패턴을 분류한다. 음성신호처리를 위해 많이 사용되고 있는 MFCC 알고리즘은전기부하 판별 성능 향상을 위해 변형되어 신호처리 과정에 적용된다. 제안된 변형 MFCC는 기존의 MFCC 보다 간단한신호처리 과정을 거치게 되며, 특징벡터 사이즈 축소가 가능하고 분류 정확도 향상과 함께 처리시간도 단축할 수 있다는장점이 있다. 실험결과는 제안된 방법이 전기부하 판별에 유용하게 사용될 수 있음을 보여준다
임용배(Lim, Young-Bae),전정채(Jeon, Jeong-Chay),박찬엄(Park, Chan-Eom),배석명(Bae, Seok-Myeong),고원식(Ko, Won-Sig) 한국산학기술학회 2009 한국산학기술학회논문지 Vol.10 No.9
본 논문에서는 부하전류, 누설전류, 아크고장과 같은 전기재해 위해 요소의 적절한 관리를 위해 유비쿼터스 환경에서 운영되는 실시간 감시 및 관리 시스템을 개발하고, 이를 이용한 국가전기안전망이 구축 방안이 제안되었다. 그리고 개발된 시스템과 제안된 안전망의 유용성 및 신뢰성을 확인하기 위해, 개발된 지능형 분전반을 전주한옥마을 28개 수용가에 설치하여 시범 운영하였다. 제안된 국가전기안전망이 일반용전기설비 수용가에 완전히 구축된다면, 전 기안전에 대한 주요 관리가 일반 사용자에서 전문가에 의한 실시간 관리체계로 전환되는 효과가 있을 것이다. 그 결 과 전기화재의 주요 원인인 과부하, 아크고장, 누전에 의한 화재가 예방될 수 있을 것이다. In this paper, in order to monitor and manage an electrical risk factor like as leakage current, load current, and arc-fault, a real time monitoring and management system being operated in the ubiquitous environment was developed, and a plan of construction of an electrical safety grid using the system was proposed. For confirmation of usefulness and reliability of the proposed safety system and grid, the developed intelligent panels were applied to 28 Korean traditional houses in Jeonjoo city, and the grid including the panels was operated. If the proposed National Electrical Safety Grid is completely constructed in the houses of general electrical users, the Grid will have an effect on that a main manager on electrical safety transfers from management system by general people to real-time management system by expert. As a result, the electrical fires caused by an over-load, an arc-fault, and an earth-fault will be prevented.
임용배(Young-Bea Lim),전정채(Jeong-Chay Jeon),박찬엄(Chan-Eom Park),배석명(Seok-Myeong Bae) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.4
According to statistics from the Korea Electric Safety Corporation for the year 2009, 9,391 fires are attributed to electrical faults. These fires result in 43 deaths and 283 injuries. The fires cost ₩ 58 billion in property damage. Multiple people using places are being managed to prevent disasters by the special law for safety supervising of multiple people using spots. The KESCO is managing safety in the places through intensified inspection. Especially, entertainment spots, such as entertainment bars and karaoke bars, are different from other multiple people using places, and active reaction to prevent electrical fires is impossible. Therefore, special protection plans to prevent electrical disasters are needed.
직렬아크고장 전류에 의한 전선 발화 특성 분석을 통한 아크고장 검출 기술의 개발
임용배(Lim Young-Bae),전정채(Jeon Jeong-Chay),배석명(Bae Seok Myung),김태극(Kim Tae-Kuek) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.4
In 2007, 9,128 fires are attributed to electrical equipments, These fires resulted in 29 deaths and 262 injuries. Arc-faults were one of the major causes of these fires. When an unintended arc-fault occurs, it generates intense heat that can easily ignite surrounding combustibles. Conventional circuit breakers only respond to overloads, short circuits, and leakage currents. Therefore, the breakers do not protect against arcing conditions. This paper presents results obtained in experiments on ignition behavior of wire by series arc fault currents and techniques developed to detect the arc-faults. The developed technique was tested after installation to make sure they are working properly and protecting the circuit. If the developed arc detecting technique is applied, the electrical fires caused by an arc-fault can be reduced.