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- 저자 : 이병곤(ByeongGon Lee) (검색결과 6 건)
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권성일(Seongil Kwon),신영식(youngsik Sin),이병곤(Byeonggon Lee),최원규(Wongyu Choe) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10
교류전기철도 급전시스템에서 고장의 원인은 크게 변전소 내 및 급전회로에의 단락 및 지락이 있고 고장전류가 큰 특고압이기 때문에 순시에 검출하여 고장을 제거할 필요가 있다. 따라서 변전소 내 보호계전기의 적절한 배치 및 정정을 통하여 고장을 검출함과 동시에, 전차선로에도 보호가 용이하도록 회로를 구성하도록 하여야 한다. 이러한 고도의 보호시스템을 구현하기 위해서는 급전계통의 구성요소 모델링 및 보호계전기알고리즘 개발이 우선시 되어야 한다. 또한 변전시스템에 통신네트워크를 통일화 및 효율화하기 위하여 IEC61850이라는 변전 자동화 표준통신 프로토콜 적용하여 무인변전소에 대한 원활한 감시를 위하여 스마트 폰과 같은 휴대용 기기 상에서 작동하는 어플리케이션 개발이 요구되어 신속하게 장애를 현황을 전달할 수 있는 전송매체까지 포함된 교류복합계전기를 개발하는 것을 제시하였다. AC electric railway power supply system it is necessary to remove the cause of the failure is a failure to detect the transient fault current because it has a significantly large extra high-voltage substation and a short circuit or ground fault of the power supply circuit in this and. Thus, through appropriate arrangement of the protective relay in the substation and correction detects a failure, and at the same time, it should be configured so that the circuit is easy to protect even a catenary. Should be a priority of the power supply system protective relay model and algorithms developed in order to implement such a high degree of protection systems. In addition, the failure to deliver on the status of the application development work on mobile devices such as smartphones and for seamless monitoring of unattended substation communication network by applying harmonization of IEC61850 substation automation to streamline and standard communication protocols in substation system requirements quickly proposed to develop an alternating current in the transmission medium including the composite relay.
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권성일(Seongil Kwon),이시빈(Seebin Lee),이병곤(Byeonggon Lee),이태훈(Taehoon Lee) 한국철도학회 2013 한국철도학회 학술발표대회논문집 Vol.2013 No.11
전차선로 설비인 드로퍼에 대한 단선현황 및 진동을 터널, 교량, 평지 시설에 대하여 측정 분석하였고, 또한 설비 별로 분류하여 장애자료를 작성하였다. 특히 드로퍼에 파단면을 분석하여 시료를 통한 분석 및 경도시험, 피로시험, 각종 시험분석으로 기계적 피로도인지 아니면 외부적인 환경에 의하여 단선현상이 발생되는지에 대한 연구하였으며, KTX 팬터그래프 압상력에 의한 전차선의 영향을 고찰하였고, 드로퍼의 탄성도 측정 또는 전기적인 순환전류 분석 및 사고사례를 적용하여 드로퍼 설치위치에 대한 연구 및 가선특성에 대하여 언급하여 이에 대한 방안으로 전차선로 드로퍼 개선을 통하여 KTX 속도를 결정하는 전차선로 드로퍼 설치방향을 제안하여 앞으로 우리나라 고속 전기철도 발전방향에 대하여 논하였다. Catenary dropper wire of equipment and vibration tunnel, bridges, flat against the measurement and analysis facilities were also categorized by equipment failure data was written. In particular, the analysis of the fracture surface of the sample to the dropper through the analysis and hardness testing, fatigue testing, and various mechanical fatigue testing and analysis by the external environment or a break occurs in the study was that, KTX pantograph catenary voltage of imagination by was investigated, and the effect, measure the elasticity of the dropper or electrical cycle by applying the current analysis and accident cases dropper wiring installation location for the study and comment on the characteristics of the plan for this by improving the catenary dropper to determine the speed KTX catenary dropper installation direction by suggesting future directions for the development of Korean high-speed electrified railway are discussed.
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바이패스 타입 self-switchable 엔진마운트 개발
김승원(Seungwon Kim),심현진(Huounjin Sim),이병곤(Byeonggon Lee) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6
In high-end vehicles, electronic control mounts are often applied to simultaneously improve idle vibration and ride-shake. However, the electronic control mount must apply a controller, solenoid valve, wiring, etc. Cost, weight, layout, etc. are disadvantageous when compared to a general hydro mount. Therefore, it cannot be applied to many models. Therefore, in this paper, a self-switchable mount was developed and proposed. Self-switchable mounts have eliminated controllers, solenoid valves and wiring. The method of changing the stiffness is the amplitude of the vibration input to the mount. In this paper, design principles, cost, and weight savings will be mentioned, and the test results in vehicles will be presented.
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김승원(SeungWon Kim),허성태(SeongTae Heo),오태원(TaeWon Oh),이병곤(ByeongGon Lee) 한국자동차공학회 2020 한국자동차공학회 부문종합 학술대회 Vol.2020 No.7
The main role of the engine mountings is to hold the P/Train in the vehicle and insulate the vibration. Therefore, the main material of the engine mount consists of rubber with excellent vibration insulation. However, the behaviour of the P/train needs to be controlled in accordance with the demand for high speed driving and continuous vibration performance improvement, so the fluid system was applied. A fluid system consisting of orifice tubes will have damping performance at specific frequencies, controlling the behaviour of P/Train. However, the application of fluid mounts has the disadvantage of having high frequency dynamic characteristics disadvantage due to fluid, a non-compressive material inside rubber. As the high frequency dynamic characteristics increase, the mass damper lamp of more than 1 kg is continuously applied at each stage of development of the vehicle due to the deterioration of the combustion sound and acceleration transmission sound of the diesel engine. Mass dampers play a role of improving vibration sensitivity, but are very unfavorable structures in terms of cost and weight. Thus, in this paper, the reverse-phase mount structure, which can improve high frequency dynamic properties while maintaining fluid mounts, has been applied. It was also proposed to remove volume-stiffness (resistance to fluid non-compression) by physically separating the rubber and fluid systems.
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박성규,김수남,이종찬,김한성,김연준,이병곤,장이섭 대한본초학회 2004 大韓本草學會誌 Vol.19 No.1
Objectives: Jaeum-Dan (JED) I and II are new formulas composed with oriental herbs. We investigated the anti-aging effects on skin with water extracts of JED 1 , JED II, JJZD IIJ and each Bupleuri Radix, Lonicerae Caulis, Coicis Semen, Armeniacae Amarum Semen, Plantaginis Herba. Methods: We measured various effects related to skin such as the proliferation of keratinocytes, the inhibition of reactive oxygen species (ROS) generation, 5a-reductase activity, the gap junctional intercellular communication, the amount of melanin and the synthesis of MMP-1 and type I procollagen. Results: The proliferation of keratinocytes were increased in JED I , 11, ID and water extracts of Bupleun Radix, Plantaginis Herba. The production of ROS were decreased in JED I , II, IJl and water extract of Bupleun Radix. 5a-reductase activity were decreased in JED I , II, lII and water extract of Lonicerae Caulis. Gap junctional intercellular communcation were increased to normal level in water extract of Coicis Semen. The amount of melanin were decreased in JED I , II, IU and water extract of Armeniacae Amarum Semen, Plantaginis Herba. The synthesis of MMP-1 and type I procollagen were positive in JED I , II, ID and water extract of Plantaginis Herba. Conclusions: The results of our study indicate that each 5 herbs have anti-aging effects and the complex of JED I with rl were best in anti-aging effects on skin.
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