Journal
IEEE ACCESS
Volume 10, Issue -, Pages 108159-108168Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2022.3213673
Keywords
Harmonic analysis; Voltage control; Consensus algorithm; Power system harmonics; Decentralized control; Microgrids; Harmonic distortion; Control systems; Power quality; Microgrids; distributed control; consensus algorithm; current sharing; power quality
Categories
Funding
- National Council for Scientific and Technological Development (CNPq) [309297/2021-4]
- Sao Paulo Research Foundation (FAPESP) [2016/08645-9, 2017/22629-9]
- Coordination for the Improvement of Higher Education Personnel (CAPES) [001]
- Mato Grosso Research Foundation (FAPEMAT) [FAPEMAT-PRO-2022/01047]
- Agencia Nacional de Investigacion y Desarrollo (ANID) through the Chilean [FOVI210023]
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This paper proposes a novel secondary control system based on the Consensus algorithm to balance the RMS current between the distributed generation phases in an isolated four-wire Microgrid. The control strategy regulates voltage magnitude using droop control per phase and achieves harmonic current sharing using the virtual impedance concept. Simulation results demonstrate the effectiveness of the proposed control strategy.
This work proposes a novel secondary control system based on the Consensus algorithm to balance the RMS current between the distributed generation (DG) phases in an isolated four-wire Microgrid (MG) containing unbalanced and non-linear loads. The control strategy proposes using a droop control per phase to regulate the voltage magnitude, whereas the harmonic current sharing is performed using the virtual impedance concept. Additionally, the proposed control scheme guarantees voltage regulation, causing the MG to operate at its nominal voltage value. In addition to sharing the RMS value of the current, the consensus algorithm also provides the equal sharing of the RMS value of the harmonic current between each phase of the DGs that comprise the MG and also ensures that the harmonic distortion of the voltage in the PCC of each DG remains within limits defined by the standards and recommendations. Simulation results demonstrate the functioning and effectiveness of the proposed control strategy.
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