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Hoang Dang Khoa(황등과),Nguyen Khanh Loc(응웬칸록),Dong Jun Won(원동준) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.11
As wind power plants continue their ever increasing penetration in the power system, it is matter of time when the wind power production will be comparable to or even larger than the conventional power generation. Currently, several large scale offshore wind farm projects have been undergone in many places in the world. Up to now, the AC transmission system has been well accepted for the integration of all offshore wind farms to the Grid; there has been as yet no Voltage Source Converter (VSC) based-transmission system applied for offshore wind farms. In this paper, relevant aspects relating to the large-scale development of offshore wind power will be discussed. An overview of the transmission solutions to associate offshore wind farms to the Grid will be also surveyed. An offshore wind farm connected to the VSC-High Voltage Direct Current (VSC-HVDC) transmission system will be proposed. Operation modes of the proposed system with a specific control strategy will be modeled; faults in each system will be examined separately along with results exposed. All simulations in this paper will be carried out in PSCAD/EMTDC environment.
Battery와 Electrolyzer를 이용한 태양광 발전시스템 운영
康起赫(Gi-Hyeok Gang),金閏成(Yun-Seong Kim),응웬칸록(Nguyen Khanh Loc),元東俊(Dong-Jun Won) 대한전기학회 2008 전기학회논문지 Vol.57 No.11
The output power of photovoltaic(PV) generation system is strongly affected by weather conditions. To make up for the defect of solar energy, energy storages such as battery and electrolyzer are usually integrated with photovoltaic cell. This paper focuses on the way to store energy surplus with battery and electrolyzer and to provide energy with battery. Photovoltaic generation system is modeled with PV cell, DC/DC converter, DC/AC inverter, battery and electrolyzer. The operation algorithm to regulate PV output power with battery and electrolyzer is suggested. The simulation results show that battery and electrolyzer effectively cooperate with each other to compensate the fluctuation of PV generation system.