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논문 기본 정보

자료유형
학술저널
저자정보
Xiaotong Xu (Xi’an Jiaotong-Liverpool University) Huiqing Wen (Xi’an Jiaotong-Liverpool University) Lin Jiang (University of Liverpool) Yihua Hu (University of Liverpool)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.17 No.3
발행연도
2017.5
수록면
744 - 755 (12page)

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초록· 키워드

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With the high penetration of various sustainable energy sources, the control and protection of Microgrids has become a challenging problem considering the inherent current limitation feature of inverter-based Distributed Generators (DGs) and the bidirectional power flow in Microgrids. In this paper, a hybrid control and protection scheme is proposed, which combines the traditional inverse-time overcurrent protection with the biased differential protection for different feeders with different kinds of loads. It naturally accommodates various control strategies such as P-Q control and V-f control. The parameter settings of the protection scheme are analyzed and calculated through a fast Fourier transform algorithm, and the stability of the control strategy is discussed by building a small signal model in MATLAB. Different operation modes such as the grid-connected mode, the islanding mode, and the transitions between these two modes are ensured. A Microgrid model is established in PSCAD and the analysis results show that a Microgrid system can be effectively protected against different faults such as the single phase to ground and the three phase faults in both the grid-connected and islanded operation modes.

목차

Abstract
I. INTRODUCTION
II. MICROGRID CONTROL
III. HYBRID PROTECTION SCHEME
IV. SIMULATION ANALYSIS
V. CONCLUSION
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