Journal
IEEE TRANSACTIONS ON POWER SYSTEMS
Volume 36, Issue 3, Pages 2693-2701Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2020.3037265
Keywords
Estimation; Power system dynamics; Time-frequency analysis; Phasor measurement units; Damping; Frequency estimation; Frequency response; Inertia estimation; power system dynamics; Fast Frequency Response (FFR); equivalent inertia; Converter-Interfaced Generation (CIG)
Categories
Funding
- Science Foundation Ireland [SFI/15/IA/3074]
- European commission [883710]
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The proposed online estimation method accurately tracks the inertia of various types of generators and demonstrates robustness against noise.
This paper proposes an on-line estimation method able to track the inertia of synchronous machines as well as the equivalent, possibly time-varying inertia from the converter-interfaced generators. For power electronics devices, the droop gain of the Fast Frequency Response (FFR) is also determined as a byproduct of the inertia estimation. The proposed method is shown to be robust against noise and to track accurately the inertia of synchronous generators, virtual synchronous generators with constant and adaptive inertia, and wind power plants with inclusion of energy storage-based frequency control.
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