Impedance Characterization of Utility-Scale Renewable Energy and Storage Systems [electronic resource] : Preprint

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Tác giả:

Ngôn ngữ: eng

Ký hiệu phân loại: 621.47 Solar-energy engineering

Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2019

Mô tả vật lý: Size: 3.0 MB : , digital, PDF file.

Bộ sưu tập: Metadata

ID: 258022

This paper presents the impedance characterization of utility-scale wind turbines and PV/storage inverters using a multimegawatt grid simulator-based grid integration testbed. The paper describes testbed components including a 7 MVA grid simulator, 5 MW dynamometer, medium-voltage measurement system, and real-time control system used for automated impedance characterization of wind turbines and inverters. Different aspects of impedance measurement are discussed, including the selection of the magnitude and type of perturbation, measurement of frequency cross-coupling between sequence impedance responses, and the alignment of the reference frame for sequence impedance measurement. The paper also demonstrates high-fidelity validation of EMT simulation models and characterization of grid-forming inverters using impedance measurements.
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