Decentralized Model-Reference Adaptive Control Based Algorithm for Power Systems Inter-Area Oscillation Damping

Tswa-wen Pierre-Patrick Banga-Banga (), Carl Kriger () and Yohan Darcy Mfoumboulou ()
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Tswa-wen Pierre-Patrick Banga-Banga: Centre for Substation Automation and Energy Management Systems (CSAEMS), Department of Electrical, Electronics and Computer Engineering, Cape Peninsula University of Technology, Cape Town 7500, South Africa
Carl Kriger: Centre for Substation Automation and Energy Management Systems (CSAEMS), Department of Electrical, Electronics and Computer Engineering, Cape Peninsula University of Technology, Cape Town 7500, South Africa
Yohan Darcy Mfoumboulou: Centre for Substation Automation and Energy Management Systems (CSAEMS), Department of Electrical, Electronics and Computer Engineering, Cape Peninsula University of Technology, Cape Town 7500, South Africa

Energies, 2022, vol. 15, issue 22, 1-15

Abstract: Being the primary cause of inter-area oscillations and due to the fact that they limit the generation’s output, Low-Frequency Electromechanical Oscillations (LFEOs) represent a real threat to power system networks. Mitigating their effects is therefore crucial as it may lead to system collapse if not properly damped. As rotor angle instability is the primary cause of LFEOs, this paper presents a novel Model-Reference Adaptive Control (MRAC) scheme that enhances its stability. The proposed scheme is tested using the Single-Machine Infinite Bus (SMIB) network. The results obtained validate the proposed decentralized control architecture. The robustness of this oscillation damping controller is verified through simulations in MATLAB/SIMULINK. With Gaussian noise added to the structure of the generator to emulate small load variations responsible for the rotor angle instability, the results of the simulations show that the rotor angle remains stable. Furthermore, when subjected to faults, the recovery time is less than 500 ms.

Keywords: MRAC; oscillation damping; inter-area oscillations; Gaussian noise; small-signal stability; SMIB; MATLAB/SIMULINK (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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