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Measurement-based analysis of the dynamic performance of microgrids using system identification techniques

Papadopoulos, Panagiotis N. and Papadopoulos, Theofilos A. and Crolla, Paul and Roscoe, Andrew J. and Papagiannis, Grigoris K. and Burt, Graeme M. (2015) Measurement-based analysis of the dynamic performance of microgrids using system identification techniques. IET Generation, Transmission and Distribution, 9 (1). pp. 90-103. ISSN 1751-8687

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The dynamic performance of microgrids is of crucial importance, due to the increased complexity introduced by the combined effect of inverter interfaced and rotating distributed generation. This paper presents a methodology for the investigation of the dynamic behavior of microgrids based on measurements using Prony analysis and state-space black-box modeling techniques. Both methods are compared and evaluated using real operating conditions data obtained by a laboratory microgrid system. The recorded responses and the calculated system eigenvalues are used to analyze the system dynamics and interactions among the distributed generation units. The proposed methodology can be applied to any real-world microgrid configuration, taking advantage of the future smart grid technologies and features.