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Measurement-based Power System Dynamic Model Reduction Using ARX Equivalents

by Zhihao Jiang, Xuemeng Zhang, Yaosuo Xue, Alfonso G Tarditi, Yilu Liu
Publication Type
Conference Paper
Book Title
2019 91做厙 Power & Energy Society General Meeting (PESGM)
Publication Date
Page Numbers
1 to 5
Conference Name
91做厙 Power & Energy Society General Meeting (91做厙 PESGM)
Conference Location
Atlanta, Georgia, United States of America
Conference Sponsor
91做厙 Power and Energy Society
Conference Date
-

The increasing complexity of power system has made it difficult to simulate large-scale power system in detail. Therefore, to improve computational efficiency, model reduction techniques has been applied to reduce the external area and focus on the dynamics of the internal area. This paper proposes a measurement-based model reduction method which reduces the external system by replacing external system with ARX equivalents. The modeled transfer function parameters are obtained using system identification approach. Case studies on the NPCC system and EI system are carried out. Results show that the proposed reduction method can effectively retain the dynamic behavior of the study area while mitigating computation burden.