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응답스펙트럼해석법을 이용한 25.8kV GIS의 내진 안전성 연구
김견우(Kyoun Woo Kim),배채윤(Chae Yoon Bae),김영근(Young Geun Kim) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Recently, the important of the seismic safety evaluation of a large-scaled electric equipment is increasing since the electric energy consumption growth. In order to evaluate the seismic safety of large power devices such as GIS(Gas Insulated Switchgear) or equipments for electric power substations or nuclear power plants, the seismic safety evaluation has been conducted by the seismic tests or the seismic simulation. Generally, It is preferred the seismic simulation because the seismic tests of large devices need large test facilities and cost a lot. However, many parameters such as effective mass, mode, RRS(Required Response Spectrum) should be considered properly for the precise simulation. In this paper, the seismic analysis of the 25.8kV GIS producted by LS-ELECTRIC have been used the finite element method and analyzed using ANSYS Workbench.
초고압 차단기 연성해석을 위한 고속해석 프로그램 개발 연구
김견우(Kyoun Woo Kim),박지용(Jee Yong Park),주현우(Hyun Woo Joo),배채윤(Chae Yoon Bae),최종웅(Jongung Choi),김영근(Young Geun Kim) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11
Recently, the importance of development for improvement of a reliability and a performance in the electric power systems is increasing since the electric energy consumption growth. In general, experiments and simulations are used for design evaluations. But the simulations are recommended because the experiments need a lot of money and time. However, 3D simulations of the analysis methods are difficult and time is spent a lot of. And multiphysics for analyzing various physical phenomenons at the same time is difficult to realize. In this paper, 1D simulations of most economical analysis methods were used for developing high speed analysis program. Also multiphysics were composed to associate dynamics of the mechanism with pneumatic of the CB(Circuit Breaker). And the Matlab/Simscape was used to develop to make sure of a valid reliability in a initial stage of study.
송창우(Chang-Woo SONG),김견우(Kyoun-Woo KIM),서한복(Han-Bok Seo),신부현(Bu-Hyun Shin),이승엽(Seung-Yop Lee) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
In this paper, we propose the design of a micro-module robot enabling various locomotions. And we demonstrate the existence and non-existence of potentialities by using the finite element simulation and solving the inverse dynamics. This micro-module robot cannot only perform both the perpendicular and horizontal locomotions, but also it includes a mechanism to escape dangerous situations, mimicking a Armadillium vulgare themselves which is able to round the its body into a ball shape being protected from predator. The electromagnetic type segmented actuators are used to implement fast moving speed. The characteristics of the module actuators are studied by using FEA, and the feasibility of the proposed locomotion mechanisms are also demonstrated by solving the inverse dynamics.
초고압 복합소호 차단기의 소호부-조작기 연성해석에 대한 특성 계산
박지용(Jee-yong Park),김견우(Kyoun-woo Kim),최명(Ming Cui),주현우(Hyun-woo Joo),배채윤(Chae-yoon Bae),최종웅(Jong-ung Choi),김영근(Young-geun Kim) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11
Demands and trends in high voltage Self-blast circuit breakers are toward compactness and cost efficiency, so most of GIS designers prefer adequate computer simulation in the design phase in order to achieve compact size together with the performance of products. The stroke curve of moving contacts is considered as one of the essential data for a HVCB development and related simulation. For this reason, at the concept design stage, it is necessary to predict stroke data with sufficient precision prior to prototype manufacturing. For this purpose, a coupled fluid-mechanical dynamics analysis method is presented in this paper.
초고압 복합소호 차단기의 단순 물리 아크모델에 대한 해석연구
박지용(Jee-yong Park),김견우(Kyoun-woo Kim),배채윤(Chae-yoon Bae),안길영(Kil-Young Ahn),김영근(Young-geun Kim) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Nowadays, Demands and trends in high voltage Self-blast circuit breakers are toward compactness and cost efficiency, so most of GIS designers prefer adequate computer simulation in the design phase in order to achieve compact size together with the performance of products. However, The CFD commercial software takes a considerable amount of time to simulate the arc phenomenon of the HV circuit breaker. A simplified physical arc model was introduced as a way to overcome these issue and it provides possibility to get relatively simple, and easy to use, simulation software for high voltage Self-blast circuit breakers. Such software has been developed and successfully used in development of Self-blast circuit breakers.
전자계-열유동 연성해석을 통한 저압 배전반의 열전달 해석
유기남(Ki Nam Ryu),김견우(Kyoun Woo Kim),김기원(Kee Won Kim),배채윤(Chae Yoon Bae),안길영(Kil Young Ahn),김영근(Young Geun Kim) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.8
수배전반은 한전의 송전라인으로부터 아파트, 빌딩, 공장과 같은 수용가에 전력을 공급하는 전력설비이다. 최근 산업 고도화와 첨단화된 건축물, 전기차 보급률 증가 등 다양한 이유로 인하여 전력사용량이 증대되고 있으며 수배전반도 이로 인한 고용량화 및 컴팩트화가 요구되고 있는 실정이다. 수배전반은 제품특성상 큰 용량의 전류가 제한적인 공간에 흐르기 때문에, 많은 경우 열적 문제에 부딪치게 되며 이에 따른 열적 안정성을 확보할 수 있는 설계 및 해석 기술이 필수적이다. 특히, 전자계와 열유동을 연계한 다물리계 해석기법을 적용하여 실제에 가까운 결과를 낼 수 있으며, 본 논문에서는 전자계-열유동 연성해석을 통한 수배전반의 열전달 해석을 수행하고, 이를 공인인증시험 데이터와 비교 및 평가하였다.