• 대한조선학회논문집
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• 제51권2호
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• pp.138-147
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• 2014

This paper proposed an application of expert system to submarine arrangement design. Since all components of the submarine should be placed in a restricted place called pressure hull, expert knowledge has great effects on design of submarine arrangement. In this regard, a suitable knowledge-based expert system shell was applied to design of submarine arrangement process. To use expert system on the design of submarine arrangement effectively, a template model for submarine arrangement, which is proper to use in optimum design process, was developed. The proposed system was applied to simplified example of submarine arrangement problem to choose optimal design alternative. From this study, it was verified that expert system could be used in design of submarine arrangement with effect.

• 한국CDE학회논문집
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• 제21권1호
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• pp.51-60
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• 2016

The arrangement design of a submarine has been performed based on data of parent ships and experts' experiences. To support such a task, it is necessary to accumulate and use systematically the data, and to optimize the task. The expert system for the first issue and the optimization method for the latter issue can be used. At this time, a suitable data structure to share the data on the arrangement design of the submarine should be used. In this study, the data structure named an arrangement template model (ATM) is proposed. To check the applicability of the ATM, a prototype program which consists of the expert system and the optimization method is developed. Finally, the developed program is applied to a small submarine of US Navy. As a result, it is confirmed that the ATM can be used to share the data between the expert system and the optimization method.

• International Journal of Naval Architecture and Ocean Engineering
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• 제3권4호
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• pp.254-262
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• 2011

This study aims to optimize an arrangement of ship compartments with knowledge-based systems. Though great attention has been shown to the optimization of hull forms in recent years, the study on arrangement design optimization has received relatively little attention. A ship is both an engineering system and a kind of assembly of many spaces. This means that, to design an arrangement of ship compartments, it is necessary to treat not only geometric data but also knowledge on topological relations between spaces and components of a ship. In this regard, we select a suitable knowledge representation scheme for describing ship compartments and their relations, and then develop a knowledge-based system using expert system shell. This new approach is applied to create design variations for optimization on an arrangement of a pressure hull of a submerged vehicle. Finally, we explicate how our approach improves the design process.

• 한국태양에너지학회 논문집
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• 제31권3호
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• pp.29-35
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• 2011

This study draws economic expense factors according to the influence of generation resulted from slipstream and the arrangement of the complex when arranging and designing the complex for offshore windpower development as a model of 50MW offshore wind farm and conducts economics analysis. According to the result of the analysis, O (Optimize) arrangement was the one that has the highest generation for having the best windpower resources in terms of design and being least affected by slipstream; however, the arrangement requires expensive submarine cables and high installation cost. Therefore, according to the analysis of economics, it was thought that 50MW complex should have less economics as BC ratio 0.95 than the series arrangement of main wind direction and I+80 series arrangement would be rather more economical. This economics evaluation provides comparison according to the arrangement of the development complex considering the uncertainty of the electricity price and gross construction cost. And it is expected that the result of economics evaluation would greatly differ by installation capacity, and the reason is that the cost of electric infrastructure takes up a higher portion than the gross construction cost of the development complex. The only way to compensate this part is to make the windpower development complex larger. It seems that it will be necessary to enhance spot applicability to evaluate economics afterwards and pay consistent attention to and conduct follow-up research on the economics evaluation of the complex construction.

• 한국전자통신학회논문지
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• 제17권1호
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• pp.77-84
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• 2022

해저 전력케이블은 수면 아래로 전력을 운송하는 송전케이블이다. 최근 해저케이블은 해상의 재생에너지인 풍력, 파력 및 조류시스템 등의 전력을 육지로 전송하며, 이 케이블이 위치하는 장소에 따라 해저에 매설하거나 해저면에 놓여진다. 전력케이블은 극한 환경에서 이용되어 왔기 때문에 가혹한 조건들과 온도 및 강한 조류를 견디도록 제작되나, 해저조건은 해상케이블에 대해 수 많은 종류의 심각한 손상을 만들기에 충분한 조건을 갖는다. 이러한 원인은 전력전송을 중단시키는 케이블 손상을 가져온다. 본 논문에서는 케이블에 대한 설계기준과 시공절차와 난제 그리고 케이블 전환 접속시스템에 대하여 연구한다. 설계된 해저케이블의 규격은 154kV 기존 케이블 1회선과 신규 케이블 2회선 등 3회선으로 구성되고, 선로당 100MVA 전력용량을 갖는다. 해저케이블 매설깊이를 결정하고 기존 및 신규 케이블을 함께 배치하는 방법을 연구하였다. 지중선로에 대한 해저케이블의 전력용량 허용값을 계산하였고 그 결과 케이블 선로당 100MW 이상의 전력용량을 갖는다는 것을 확인하였다.