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이중여자 유도형 풍력 발전기의 PSCAD 시뮬레이션 모델 개발
정병창(Jeong, Byoung-Chang),김희중(Kim, Hee-Jung),정용호(Chung, Yong-Ho),전영수(Jeon, Young-Soo),곽노홍(Kwak, No-Hong),송승호(Song, Seung-Ho) 한국신재생에너지학회 2006 한국신재생에너지학회 학술대회논문집 Vol.2006 No.06
In this paper, doubly-fed induction-type wind power generation system simulation model for grid connection is developed. The simulation model is based on PSCAD/EMTDC and consists of rotor-blade, blade controller, generator power converter and generator controller Blade controller controls the blade pitch angle for starting, peak power limiting and emergency condition. Generator controller controls the generator output power to maximize the system efficiency. Simulation results are shown for the variable wind speed conditions. The simulation model can be utilized for study of actual interaction between wind turbine and grid for reliable operation and protection of power system.
Compensation of Unbalanced PCC Voltage in an Off-shore Wind Farm of PMSG Type Turbines
Ja-Yoon Kang(강자윤),Dae-Su Han(한대수),Yong-Sug Suh(서용석),Byoung-Chang Jung(정병창),Jeong-Joong Kim(김정중),Jong-Hyung Park(박종형),Young-Joon Choi(최영준) 전력전자학회 2015 전력전자학회 논문지 Vol.20 No.1
This paper proposes a control algorithm for permanent magnet synchronous generators with a back-to-back three-level neutral-point clamped voltage source converter in a medium-voltage off-shore wind power system under unbalanced grid conditions. Specifically, the proposed control algorithm compensates for unbalanced grid voltage at the PCC (Point of Common Coupling) in a collector bus of an off-shore wind power system. This control algorithm has been formulated based on symmetrical components in positive and negative synchronous rotating reference frames under generalized unbalanced operating conditions. Instantaneous active and reactive power is described in terms of symmetrical components of measured grid input voltages and currents. Negative sequential component of AC input current is injected into the PCC in the proposed control strategy. The amplitude of negative sequential component is calculated to minimize the negative sequential component of grid voltage under the limitation of current capability in a voltage source converter. The proposed control algorithm enables the provision of balanced voltage at the PCC resulting in the high quality generated power from off-shore wind power systems under unbalanced network conditions.
컴퓨터시뮬레이션과 실용량 하드웨어시뮬레이터를 이용한 계통연계 풍력발전의 성능비교분석
윤동진(Dong-Jin Yun),오승진(Seung-Jin Oh),한병문(Byung-Moon Han),정병창(Byoung-Chang Jeong),정용호(Yong-Ho Jung),최영도(Young-Do Choy),전영수(Young-Soo Jeon) 대한전기학회 2009 전기학회논문지 P Vol.58 No.3
This paper describes comparative analysis results about the dynamic interaction of interconnected wind power system using the actual-size hardware simulator and the simulation model with PSCAD/EMTDC. The hardware simulator, which is composed of 2.0MVA induction motor with drive system and 1.5MW doubly-fed induction generator, was built and tested in Go-Chang Test Site of KEPCO for analyzing the dynamic interaction with the interconnected distribution system. The operation of hardware simulator was verified through comparative analysis between experimental results and simulation results obtained by simulation model with PSCAD/EMTDC. The developed hardware simulator and simulation model could be effectively used for analyzing the dynamic interaction, which has various phenomena depending on the wind variation and the network state of interconnected power system.