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한기항(Ki-Hang Han),심건보(Keon-Bo Shim),오기봉(Kie-Bong Oh) 한국조명·전기설비학회 2002 한국조명·전기설비학회 학술대회논문집 Vol.2002 No.-
Purpose of the grounding system design are establish a safe environment for personnel as well as the general public in the vicinity of the power system equipment, and establish a low resistance connection to earth such that protective devices detect and isolate faults quickly and potential rise of the grounding system does not exceed a value which could damage electrical equipment. This paper deals with the grounding system design for the electric facilities. In this paper, emphasize the necessity of the computer programs for the grounding system designs. Especially, earth soil models for the grounding system design are must used two-layered soil model.
종합병원의 전력소비 특성을 고려한 회귀분석이론을 이용한 수용률 기준 설정
김세동(Se-Dong Kim),신효섭(Hyo-Seop Shin),김수길(Soo-Gil Kim),오기봉(Kie-Bong Oh) 한국조명·전기설비학회 2005 한국조명·전기설비학회 학술대회논문집 Vol.2005 No.11월
It is increased electrical energy consumption with the development of intelligence society in the general hospitals and thus an energy conservation through efficient use of electricity became more important. This paper shows a reasonable design demand factor in office buildings, that was made by the systematic and statistical way considering actual conditions, such as investigated electric equipment capacity, peak power consumption, demand factor, etc., for 32 general hospitals and 9 electrical design offices. In this dissertation, it is necessary to analyse the key features and general trend from the investigated data. It made an analysis of the feature parameters, such as average, standard deviation, median, maximum, minimum and thus it was carried linear and nonlinear regression analysis.
김연근(Kim Youn-Kun),창상훈(Chang Sang-Hoon),오기봉(Oh Kie-bong) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-
The research sees the catenary dropper clamp using a test equipment which is using actual sample in the field. This test helps the quality improvement of material. For raising the reliability of data, classified it by type and tests especially in the multiple sample but it was under testing in the sample of decimal at circumstance. From the accuracy side of research data it was insufficient because the dropper clamp was in small quantity but it contributes in quality of material improvement. The quality of material data which it gets with spectroscopic was not accurate so hereafter it needs to follow wet analysis and precise analysis to join in the test which is detailed comes to accomplish with the data accuracy.
업무용빌딩의 전력소비 특성을 고려한 회귀분석이론을 이용한 수용률 기준 설정
김세동(Se-Dong Kim),신효섭(Hyo-Seop Shin),김수길(Soo-Gil Kim),오기봉(Kie-Bong Oh) 한국조명·전기설비학회 2004 한국조명·전기설비학회 학술대회논문집 Vol.2004 No.11월
고도 정보화 사회의 진전으로 전기에너지의 소비는 급격히 증가하고 있다. 특히 업무용 빌딩과 같은 전력다소비 건물에서는 전력의 효율적 이용에 의한 에너지절감은 물론 설계 단계에서의 합리적인 전기설비 설계가 요청되고 있다. 현재 우리나라의 기후 특성과 전력소비 특성을 고려한 합리적인 전기설비 설계를 위한 기초 자료가 매우 미흡한 실정이다. 본 연구에서는 합리적인 수용률 기준을 설정하기 위하여 사무소용 빌딩의 전력 소비 특성을 조사 분석하였고, 아울러 전기설비설계사무소에서 적용하고 있는 수용률을 조사 분석하였다. 조사된 자료 전체의 특징과 중심적인 경향을 알아 내기 위해서 평균값, 중앙값, 표준편차, 최대값, 최소값, 회귀모형식, 최소제곱 평균오차 등의 확률 통계적 파라미터들을 수용률 기준 설정을 위한 특징 파라미터로 선택하였다. 그리고, 데이터의 신뢰성을 비교 분석하기 위하여 선형적인 방법과 비선형적인 방법으로 그 경향을 추정하여 곡선으로 나타내었다. 이러한 방법에 의하여 얻어진 분석 자료를 이용하여 적정 변압기 용량 설정을 위하여 데이터베이스화하였고, 변전설비용량의 합리적인 설계를 위하여 수용률 기준 적용시에 필요한 자료로 활용할 수 있으리라 사료된다.
柱上變壓器의 閃絡時 發生하는 配電線의 異上電壓에 關한 硏究
吳基鳳 서울産業大學校 1983 논문집 Vol.18 No.1
The causes of the strange voltage in the electric power line system have been discussed in various cases. The strange voltage of the pole transformer which is one of important instruments in electric line is extremely important to be studied. The author has studied the causing mechanism of the strange of the pole transformer and proposed here methods of prevention of it.
吳基鳳 서울産業大學校 1980 논문집 Vol.13 No.1
This paper is the study on the analysis of voltage and current of multiple overhead power transmission line. A new solution is developed in accordance with electric network system, and fixed a circuit equation which is convenient to handle in case of a complex system composition and handle a calculation unitedly in a normal state or trouble state.
오기봉 서울産業大學校 1984 논문집 Vol.20 No.1
This paper will deal with the temperature distribution of underground power cable accessories in both steady state and transient. The paper studies the equivalent circuits at first, analytical solution of steady state is derived by using the study of equivalent circuits. This analytical solution is compared with measured values of gas insulated type pothead. Transient temperature distribution is used finite difference methode. As the equation constructs spase matrix, the paper introduces a calculation method using minicomputer