Coordinated Control of Active and Reactive Power Compensation for Voltage Regulation with Enhanced Disturbance Rejection Using Repetitive Vector-Control

Felipe J. Zimann, Eduardo V. Stangler, Francisco A. S. Neves, Alessandro L. Batschauer and Marcello Mezaroba
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Felipe J. Zimann: Department of Electrical Engineering, Santa Catarina State University, Joinville 89219-710, Brazil
Eduardo V. Stangler: Department of Electrical Engineering, Universidade Federal de Pernambuco, Recife 50740-530, Brazil
Francisco A. S. Neves: Department of Electrical Engineering, Universidade Federal de Pernambuco, Recife 50740-530, Brazil
Alessandro L. Batschauer: Department of Electrical Engineering, Santa Catarina State University, Joinville 89219-710, Brazil
Marcello Mezaroba: Department of Electrical Engineering, Santa Catarina State University, Joinville 89219-710, Brazil

Energies, 2020, vol. 13, issue 11, 1-18

Abstract: Voltage profile is one of many aspects that affect power quality in low-voltage distribution feeders. Weak grids have a typically high line impedance which results in remarkable voltage drops. Distribution grids generally have a high R/X ratio, which makes voltage regulation with reactive power compensation less effective than in high-voltage grids. Moreover, these networks are more susceptible to unbalance and harmonic voltage disturbances. This paper proposes an enhanced coordinated control of active and reactive power injected in a distribution grid for voltage regulation. Voltage drop mitigation was evaluated with power injection based on local features, such loads and disturbances of each connection. In order to ensure disturbances rejection like harmonic components in the grid voltages, a repetitive vector-control scheme was used. The injection of coordinated active and reactive power with the proposed control algorithm was verified through simulations and experiments, demonstrating that it is a promising alternative for voltage regulation in weak and low-voltage networks subject to inherent harmonic distortion.

Keywords: effective voltage regulation; generalized delayed signal cancellation; harmonic distortion; power quality; repetitive controller (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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