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Modular Green Substation 동향 및 운영기술 개발
오승열(Seung-Ryle Oh),전인영(In-Young Jun) 대한전기학회 2020 전기의 세계 Vol.69 No.10
이 기고문에서는 신재생에너지의 연계 효율성을 향상시키며 변전소 고장에 대비할 수 있는 Modular Green Substation 개발을 위한 동향 및 운영기술계획 수립 연구를 통해 국내 전력 계통 운용의 신뢰성을 증진시키고자 한다. This contribution deals with plans for development and trend of Modular Green Substation to cope with emergencies in the case of substation failure and to improve the acceptability of renewable energy.
오승렬(Seung-Ryle Oh),박지훈(Ji-Hun Park),박종화(Jong-Wha Park) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.11
It is necessary to improve the time efficiency in the high power testing station because tests are mainly performed by high-priced equipment Minimizing a human error through building the database of relevant standards is possible to expect reliable tests. And also, application program that is properly customized for the certain laboratory’s power system will help test engineer to easily analyze the phenomenon that is happened in short-circuit and load switching tests. This paper introduces the several functions of the application program that is developed in order to realize these requirements.
여자전류 재단에 따른 단락 시험용 변압기의 절연영향 평가
오승렬(Seung-Ryle Oh),박지훈(Ji-Hun Park),박종화(Jong-Wha Park) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.11
The residual flux in transformers iron cores leads to a distortion of short-circuit current occasionally. And some considerable distortion may have effect on the validation of the test results. To avoid the substantial distortion, a suitable pretest is performed before the actual test. In case of applying this method there must be excessive overvoltage due to switching of an unloaded transformer and chopping of an excitation current. The purpose of this paper is estimate that the effect of the overvoltage results from this phenomenon on insulation performance of short-circuit transformer.