CGI for Impedance Characterization of Inverter-Coupled Generation [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 628.3 Sewage treatment and disposal
• 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 MB : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 258068
• Chủ đề: 1. 17 wind energy; 2. 42 engineering; 3. Grid simulator; 4. Impedance characterization; 5. Resonance

Tóm tắt

This presentation provides an overview of impedance characterization of inverter-coupled generation using the 7 MVA/13.2 kV grid simulator (controllable grid interface) at the National Wind Technology Center of NREL. The presentation shows how sequence impedance responses of multi-megawatt inverters and wind turbines are measured using the grid simulator. Applications of the measured impedance responses for the evaluation of dynamic interactions and high-fidelity model validation are demonstrated. The presentation also shows application of large-signal impedance theory for the prediction of harmonics generated by subsynchronous resonance (SSR) of DFIG-based Type-III wind turbines with series-compensated transmission lines. Finally, a new method for impedance-based characterization of power system frequency response is presented to enable real-time estimation of system inertia and primary frequency response (PFR), and to support control design for frequency support by inverter-coupled generation.