• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.666_667
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• 2009

원자력발전소의 비상전력계통은 소외정전 시 발전소 안전정지에 필요한 안전관리 설비에 비상전력을 공급하는 계통으로 비상전력계통 모선에 비상디젤발전기(Emergency Diesel Generator : EDG)가 설치되어 있다. 본 논문에서는 국내 중수로형 원자력 발전소에 대해서 최초로 주기적 안전성 평가(Periodic Safety Review : PSR)을 수행한 결과를 기술하였다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2008.06a
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• pp.689-690
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• 2008

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.2038-2039
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• 2008

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2007.04a
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• pp.128-133
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• 2007

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2012.10a
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• pp.777-778
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• 2012

• Proceedings of the KIEE Conference
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• 2002.07d
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• pp.2140-2142
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• 2002

본 논문에서는 디젤발전기의 병렬운전에 대해 소개하고 병렬운전을 수행하기 위한 조건들을 확인한다. 먼저 디젤발전기의 전달함수를 검토하고 디젤발전기의 특성을 용량별로 분석하여 일반화하며 주파수제어기를 설계한다. 계기용변류기(CT: current transformer)와 계기용변압기(PT: potential transformer)를 이용한 전류, 전압측정 회로를 설계하고 시뮬레이션을 통하여 타당성을 검토하고 3상 전력과 주파수를 제어하는 병렬운전제어기의 설계 방안을 제안한다.

• Proceedings of the KIEE Conference
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• 2001.07a
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• pp.292-294
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• 2001

자가용 발전기는 주로 디젤엔진과 동기발 전기로 구성된다. 자가용 발전기의 안정적인 출력을 위해서는 디젤엔진을 정속으로 운전하는 것이 중요하다. 디젤엔진의 속도 제어기로는 일반적으로 조속기가 사용되는데, 본 논문에서는 DSP를 이용한 디지털 조속기를 개발하고 정속제어를 위한 운전 알고리즘을 제시하였다.

• Journal of Korean Institute of Industrial Engineers
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• v.13 no.2
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• pp.129-141
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• 1987

The possibility of human error in operation of nuclear power plant has been proved to be one of the most important factors for safety analysis. This study established the HRA methodology according to THERP steps for performing PRA(probabilistic risk assessment) of nuclear power plants and made two sample calculations : Availibility of auxiliary diesel generator, possibility of Davis-Bess #1 accident in 1985.

• Proceedings of the KIPE Conference
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• 2017.07a
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• pp.284-285
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• 2017

본 논문에서는 슬라이딩모드 제어이론을 이용한 디젤엔진발전기의 가변속 제어기법을 제시한다. 부하의 변동에 대해 최적효율 운전점으로 동작시키기 위해 가변속이 필요하며 이를 위해 슬라이딩모드 속도제어기를 설계한다. 시뮬레이션을 통해 제어기의 성능을 검증한다.

• Journal of Advanced Marine Engineering and Technology
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• v.38 no.7
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• pp.854-867
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• 2014

In the circumstance that high oil price state is continued over the world, the investment in crude oil development by oil major is a trend of increasing. Recently the number of delivered drill-ship for 5 years has been sharply increased all over the world and about twice than that of past 30 years. As addition to the increase of the drill-ship demand, the operation of drill-ships which is delivered recently is about 3,000 meters, ultra deep sea, on average and the work area is expending. Accordingly the drilling system including the size and length of pipe for drilling has been bigger and bigger and the power supply equipment for operation system also has large capacity. Unlike merchant vessel, high power and high voltage of diesel generators are required for drill-ship for which the demand for V-type 320 bore of diesel generator has increased. It is on the raised that the importance of lubrication oil cleaning for diesel generator on drill-ship which has longer time for construction, and also long term low load operation is unavoidable during commissioning of equipments. Recently it was reported that engine crankpin was damaged due to the hard contact caused by the abnormal wear down(Cam wear) on crankpin and bearing. The same pattern of wear down was found through the inspection on series vessels and the other vessel under commissioning. The purpose of this paper is to analyze of the wear mechanism based on the observation and theories and objective research from actual cases and to prepare the counter measures to avoid foreseeable damage when the lubricating oil is not properly cleaned.