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신중린 건국대학교 산업기술연구원 2005 건국기술연구논문지 Vol.30 No.-
The author has participated in the International Conference on Electrical Engineering 2004 (ICEE 2004) held in Sapporo, Japan from July 4 to 8, 2004. This is the tenth annual conference jointly sponsored by the Institute of Electrical Engineers of Japan (IEEJ), Korean Institute of Electrical Engineers (KIEE), Chinese Society for Electrical Engineering (CSEE) and Hong Kong Institution of Engineers (HKIE). The ICEE 2004 was a joint conference with Asia-Pacific Conference of Transducers and Micro-Nano Technology (APCOT/MNT 2004). The conference aims to provide a forum for sharing knowledge, experience, and creative ideas among electrical engineers worldwide. It gives me a good opportunity for better international collaboration.
송전손실보정에 의한 Newton-Raphson 전력조류계산법의 확장
신중린,임한석 건국대학교 1994 學術誌 Vol.38 No.2
Newton-Raphson(NR) method is the famous Power Flow calculation technique, and normally used due to its rapidness of numerical convergency. In the conventional NR method, however, there is a somewhat unrealistic assumption under which all the system transmission losses are considered to be supplied by the slack bus generator. In this study, a new approach for handling the losses and augmenting the conventional NR method is proposed. The proposed method estimates the incremental changes of active power on each generation bus with respect to the total system power loss, and the estimated value are used to update the slack bus power. By doing this is improves the performance of power flow calculation, especially for the critical situation which is close to voltage collapse point and thus has relatively large transmission loss.
비선형회로의 고조파해석을 위한 Duffing 방정식의 해석적 해법
신중린,황현준 건국대학교 산업기술연구원 1996 건국기술연구논문지 Vol.21 No.-
For the higher quality of electric power supply, investigating the sources and amount of harmonics as well as establishing its counter plan is very important task. The harmonics caused by the nonlinear operation of transmission equipments are not identified yet and have been seldom studied. Sources of harmonics in nonlinear circuit, especially caused by the nonlinear operation of transmission equipments, can be approximately modeled with Duffing's Equation. In this study, a new analytic approach is attempted to get the solution of Duffing's equation for the analytic approach is attempted to get the solution of Duffing's equation for the analysis of harmonics in nonlinear circuits and compared with some conventional methods. Finally some case studies were performed to evaluate the performance of proposed method and conventional methods. The result of this study would be useful to establish the way to analyse the harmonics caused by the nonlinear operation of transmission equipments.
2차원 영상의 경계선 검출을 위한 적응휠터링 알고리즘의 개선
신중린 建國大學校 附設 産業技術硏究所 1993 논문집 Vol.18 No.-
An improvement of the conventional adaptive filtering algorithm is proposed, in this paper, for the edge detection in 2-dimensional image processing. While conventional methods adopt row and column gradients as the continuity values, the proposed method considers not only row and column gradient but also diagonal gradients, computed in a 3×3 window. A new scale representation of a signal is driven with the method, which gives better edge detection than conventional methods. The proposed method is more efficient in detecting diagonal and orthogonal edge components and eliminating the noises.
손실재분배 알고리즘을 이용한 새로운 조류다근계산법에 의한 전압 안정도 해석
노민호,신중린 건국대학교 산업기술연구원 1997 건국기술연구논문지 Vol.22 No.-
In this study is proposed a new approach for the analysis of static voltage stability in power system, which is based on multiple load flow calculation method using the newly designed redistribution algorithm of transmission loss, with which more realistic load flow solution can be obtained in the near of voltage collapse point. In the proposed method, modification of power flow equations and elements of Jacobian matrix in rectangular coordinates are derived with the transmission loss redistribution formula. Some simulation results of the proposed approach show that the accuracy of static voltage stability analysis can be increased.
박종배,신중린 건국대학교 산업기술연구원 2005 건국기술연구논문지 Vol.30 No.-
The authors have participated the IEEE Power System Society General Meeting held in Denver, USA from June 6 to June 10 2004 to present two papers and to review the up-to-date industrial technology development. The meeting is considered as the one of the most important conferences in power system sector. The recent major issues in power system sector are observed as the power system restructuring, power system economics, hydrogen economics, power system blackouts, and power line comminications. We have got many ideas for future research topics and the research trends of the major institute.
전력계통의 고조파 실태조사를 위한 설문서 설계에 관한 연구
최규하,신중린,임한석 建國大學校 附設 産業技術硏究所 1993 논문집 Vol.18 No.-
A design of survey form is studied for the investigations of technical aspects and/or social effects caused by harmonics on the electric power system of Korea. The survey form is aimed to have the function of investigation for the current status of harmonics problems on the power system, as well as the function of giving further understanding of the problems to the field engineers and customers in related sphere. The proposed survey form will give some contribution to build up nation-wide countermeasures to the harmonics problems.
슬랙모선의 영향을 고려한 손실 재분배 조류계산 알고리즘
임한석,박시우,신중린 건국대학교 산업기술연구원 1995 건국기술연구논문지 Vol.20 No.-
In the conventional power flow calculations, the slack bus is defined to undertake the total transmission loss for convenience of the numerical viewpoint. This is an unrealistic assumption because, in real power system, the transmission loss is supported by all the generators. Generally the assumption may take little difficulty in power system studies, however, in certain cases such as voltage stability study the results of power flow calculation can be distorted from real ones. This paper proposes a new loss redistribution method that can alleviate a charge of slack bus. In the proposed method, the system power loss redistribution algorithm is added to the conventional power flow calculations and jacobian elements related with the real power are newly constructed. In each iteration step, the power output of each generator is corrected to improve the redistribution scheme of system power loss. Finally the usefulness of proposed method are tested through the some appropriate case studies.