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PSCAD/EMTDC에 의한 2020년 제주계통 모델링과 해석
강명석(Myeong-seok Kang),변익수(Ik-su Byun),진경민(Kyung-min Jin),김일환(Eel-hwan Kim) 전력전자학회 2011 전력전자학술대회 논문집 Vol.2011 No.7
In this paper, the virtual power grid of Jeju in 2020 is modelled including not only VSC HVDC(Voltage Source Current-High Voltage Direct Current) but also wind power generators as 200㎿ for onshore and 500㎿ for offshore by PSCAD/EMTDC. Each active power and reactive power are able to controlled by the VSC HVDC. In addition, to verify the characteristic of the modeling VSC HVDC, those wind power generators are cut off from the grid. The result show that the modeling power grid of Jeju become stabilized after 0.1second from failure.
제주 행원 풍력발전단지의 출력 안정화를 위한 에너지저장시스템 용량산정에 관한 연구
강명석(Kang Myeong-Seok),진경민(Jin Kyung-Min),김일환(Kim Eel-Hwan),오성보(Oh Sung-Bo),이정민(Lee Jeong-Min) 한국태양에너지학회 2012 한국태양에너지학회 논문집 Vol.32 No.1
This paper presents the characteristics of power generation output at Haeng-won wind farm and how to determine the optimized ESS capacity for power stabilizing. Depend on the fluctuationrate of wind power output variation, wind farm capacity and site, power stabilization will be impacted. Therefore, we need to determine proper ESS capacity. Using the actual data of Haeng-won wind farm from 2009.3 to 2010.2., capacity of ESS was determined by moving average value. To verify the proposed algorithm, simulations are carried out with PSCAD/EMTDC program. As a result, optimal ESS capacity of Haeng-won wind farm inJ eju is estimated about 1.63 MWh.
풍력발전의 출력 변동 저감을 위한 ESS 최소용량 산정기법
김재홍(Kim Jae-Hong),강명석(Kang Myeong-Seok),김일환(Kim Eel-Hwan) 한국태양에너지학회 2011 한국태양에너지학회 논문집 Vol.31 No.5
In this paper we have studied about minimizing the Energy Storage System (ESS) capacity for mitigating the fluctuation of Wind Turbine Generation System (WTGS) by using Electric Double Layer Capacitor (EDLC) and Battery Energy Storage System (BESS). In this case they have some different characteristics: The EDLC has the ability of generating the output power at high frequency. Thus it is able to reduce the fluctuation of WTGS in spite of high cost. The BESS by using Li-Ion battery takes the advantage of high energy density however it is limited to use at low frequency response. To verify the effectiveness of the proposed method simulations are carried out with the actual data of 2MW WTGS in case of worst fluctuation of WTGS is happened. By comparing simulation results this method shows the excellent performance. Therefore it is very useful for understanding and minimizing the ESS capacity for mitigating the fluctuation of WTGS.
김형택(Hyoeng-Taek Kim),김세호(Se-Ho Kim),강명석(Myeong-Seok Kang) 전력전자학회 2011 전력전자학술대회 논문집 Vol.2011 No.7
전력 계통에서 풍력발전기 용량의 증가는 계통운영자에게 계통 신뢰도 및 안정도 유지를 위한 새로운 방법론을 제시하게 한다. 풍력발전기의 불확실성과 가변성은 고스란히 계통에 영향을 끼치며, 계통 운영자는 이로 인해 변화되는 계통 상황을 분석하고 계통 신뢰도 유지를 위한 적절한 기준과 장치를 마련해야 할 것이다. 본 논문에서는 PSCAD/EMTDC를 이용하여 풍력발전기의 용량에 따라 변화되는 선로의 무효전력 및 모선 전압을 검토하고 풍력발전기 전기제어 시스템에서의 제어방식에 따라 계통에 미치는 영향을 평가하였다.