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변전소의 AC/DC 겸용 비상 및 복구 등에 관한 연구
박준열(Joon-Yeol Park),안윤기(Youn-Ki An),김종수(Jong-Soo Kim),신혜영(Hye-Young Shin) 한국조명·전기설비학회 2010 조명·전기설비학회논문지 Vol.24 No.6
본 연구는 변전소(사무실) 비상 및 복구등 설비환경 개선차원으로 실시하였다. 기존 비상등의 낮은 조도로 인해 발생하는 문제점을 해결하기 위해 AC/DC 겸용 형광등 안정기 및 스위치를 연구하였다. 또한 조도기준을 상시등의 5∼10[%]가 아닌 한국산업규격 조도기준(KS A 3011)에 따른 원자력발전소 조도기준과 안전조명 조도기준을 참고로 변전소 각 실별 조도기준을 제안하였다. 마지막으로 본 연구에서 제안한 내용의 타당성을 검토하기 위해 실험을 하였다. 그 결과 축전지 용량을 증가시키지 않으면서도 비상 및 복구등의 조도를 높일 수 있었다. This study is for the improvement in the equipment environment of the emergency and recovery lamps in electric substations. To solve problem about the weak illuminance of existing emergency lamps, the AC/DC combination lamps and switches are reviewed. And the improved illuminance standards that are divided each room's purpose are suggested. It is based on a nuclear power plant's Illuminance Standards and a safety lamp's Illuminance Standards of Illuminance Standards Korean Industrial Standards - KS A 3011 -, not just 5~10[%] in according with normal lamp's illuminance. Lastly, The experiments are conducted to prove the suggested contents on this study. Consequently, a battery capacity is not increased, but illuminance of emergency and recovery lamps can be increased.
박준열(Joon-Yeol Park),고만석(Man-Suk Ko),장래창(Rae-Chang Jang),최홍규(Hong-Kyoo Choi) 한국조명·전기설비학회 2013 조명·전기설비학회논문지 Vol.27 No.9
The prevalence of electronic devices in our modern life is accompanied with the generation of harmonics caused by the nonlinear characteristic load. Especially, the employment of LED have brought the rapid use of SMPS. SMPS is used for supplying the constant DC electric power to the LED display board, but it has a big problem which gives birth of harmonics causing by its high-speed switching. measurement HIOKI 3196 equipment to solve these harmonics were measured. In this study, we are LED Display Board Load Measuring the impedance response with X<SUB>L</SUB> changes for removing harmonics in the measured .And we adopted the suitable passive filter by the impedance response characteristic obtained in the X<SUB>L </SUB>variation experiments. We are trying to deeply the application of passive harmonic filter characteristics that generation in the LED Display Board through EDSA LED simulation.
최홍규(Hong-Kyoo Choi),박준열(Joon-Yeol Park) 한국조명·전기설비학회 2013 조명·전기설비학회논문지 Vol.27 No.7
Fire-hited electrical equipment has possibility of deterioration. So its replacement is essential in terms of safety. However, the economic burden is increased. Therefore, the replacement or re-use of it is to be determined by tests. But the research of Integrity Assessment on Fire-hited electrical equipments is very rare. In this paper, we tested to determine the replacement or re-use of Fire-hited vacuum circuit breaker. And provided the data for the integrity assessment through the analysis of its deterioration.
변압기 저압측 중성점 접지선의 누설전류 통합 감시에 관한 연구
홍순석(Soon-Seuk Hong),박준열(Joon-Yeol Park),이정은(Jung-Eun Lee),최경한(Kyung-Han Choi) 한국조명·전기설비학회 2010 조명·전기설비학회논문지 Vol.24 No.5
누설전류를 그대로 방치할 경우 전기로 인한 감전, 화재 등 여러 가지 재해요인이 될 수 있으므로 상시 감시가 필요하다. 그러나 변전소 관리를 무인화 또는 순회점검으로 실시하는 곳이 대부분이므로 상시 감시에 어려움이 있어 사고발생시 원인을 즉시 제거하지 못하고 누설전류에 의해 비상발전기의 OCGR이 작동되어 ACB가 차단될 경우 비상발전기의 가동이 중지되는 문제점이 있다. 이러한 문제점을 방지하기 위해 변압기 저압측 중성점 접지선으로 귀환하는 누설전류를 실시간 모니터링할 수 있는 변압기 누설전류 통합감시 장치를 제안하였다. 따라서 본 논문에서는 저압전로와 기기의 절연이 열화 또는 파괴되어 흐르는 누설전류의 영향을 시뮬레이션을 통해 알아보고 사례연구를 통해 통합 감시 장치의 우수성을 검증하였다. If leakage current is neglected, it can become a cause for disasters such as electric shock and fire, therefore a continuous monitoring is necessary. However in most cases, because management of substations is performed by unmanned systems, or walk-around inspections, continuous monitor is difficult. So when an accident occurs and the cause is not immediately resolved causing the emergency generator’s OCGR getting activated by the leakage current that in turn cut off the ACB, the emergency generator may stop working. To prevent such a problem, a real-time integrated monitoring system for monitoring the leakage current returning to the grounding wire of neutral point of the low voltage side of transformer is proposed. Therefore in this paper, the effects of flow of leakage current, which is caused by insulation degradation phenomena or insulation destroy phenomena, were identified by simulation. And through cases studies; the excellence of integrated monitoring system was verified.
방송통신융합 서비스를 위한 3D 모델별 고유 코드에 관한 연구
박인규(In-Gyu Park),박준열(Jun-yeol Park),김준원(Joon-Won Kim) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7
We are now using separate ID Database, Permission System, as and Standard Data Format in PC, Cell phone, IPTV service and these are not good in many kind of usage, data sharing, contents servicing and supervising efficiency. To merge these multiple services into one system we need to make a single ID systems for all and this paper will gide you to the new ID system that was much better than the old one. This new type of ID system is made with 3D Data and this will give fantastic visual effect & rich information data to the ID users in 3D way which is much better than 2D image & Text information technology.
윤철구(Cheol-Gu Yoon),최홍규(Hong-Kyoo Choi),박준열(Joon-Yeol Park),송영주(Young-Joo Song),이근원(Keun-Weon Lee),정인혁(In-Hyeok Jung) 한국조명·전기설비학회 2011 한국조명·전기설비학회 학술대회논문집 Vol.2011 No.11
In this study, tubular LED lamp module according to the PCB that causes the voltage drop due to the pattern and the brightness of the lamp according to the position analysis of the difference between supply side and the last side of the lamp voltage difference of about 1%, respectively. The brightness of the power supply side and appeared at the end of the brightness of about 8.46%. Location-brightness Tubular LED lamps to reduce the variation of the width of the pattern of PCB modules, raising more than 3mm thick, the increase is necessary to minimize losses.
하춘섭(Chun-Sup Ha),최홍규(Hong-Kyoo Choi),박준열(Joon-Yeol Park),이근원(Keun-Weon Lee),이정은(Jung-Eun Lee) 한국조명·전기설비학회 2011 한국조명·전기설비학회 학술대회논문집 Vol.2011 No.5월
접지저항은 일반적으로 전위강하법을 적용하여 접지전극과 전류보조전극의 61.8[%] 지점에 전위보조전극을 위치시켜 측정한다. 61.8[%]법칙에 따르면 전위보조전극이 접지전극과 전류보조전극과 일직선상에 있을 경우 61.8[%]지점에 위치해야 하고, 전위보조전극과 전류보조전극의 각도가 29[°]를 넘을 경우 오차가 발생한다. 그러나 실제로 접지저항 측정 시 전류보조전극과 전위보조전극의 각도가 29[°]를 초과할 경우에도 61.8[%] 법칙을 적용한 것과 유사한 접지저항을 구할 수 있다. 본 논문에서는 봉형 접지전극과 Mesh 접지전극에 대해 전류보조전 극과 전위보조전극의 각도가 90[°]와 180[°]일 때 접지저항을 측정하고, 61.8[%]법칙을 통해 구한 접지저항 값이 나오는 거리를 측정하였다.