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

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 comp...

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Bibliographic Details
Published in:Energies (Basel) 2020-06, Vol.13 (11), p.2812
Main Authors: Zimann, Felipe J., Stangler, Eduardo V., Neves, Francisco A. S., Batschauer, Alessandro L., Mezaroba, Marcello
Format: Article
Language:English
Subjects:
Compensation
Computer simulation
Control theory
Controllers
Coordinate transformations
Disturbances
effective voltage regulation
Electric power distribution
Energy
Feeders
generalized delayed signal cancellation
Harmonic distortion
Injection
Mitigation
power quality
Reactive power
Regulations
Rejection
repetitive controller
Voltage
Voltage drop
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Summary: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.
ISSN:1996-1073
1996-1073
DOI:10.3390/en13112812