Overvoltage and voltage unbalance mitigation in areas with high penetration of renewable energy resources by using the modified three-phase damping control strategy

•Solves overvoltage problems in low voltage distribution grids.•Mitigates the voltage unbalance in low voltage distribution grids.•Reduces the active power drooping in areas with high penetration of renewable energy resources. The increasing penetration of renewable energy resources imposes challeng...

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Bibliographic Details
Published in:Electric power systems research 2019-03, Vol.168, p.283-294
Main Authors: Bozalakov, D.V., Laveyne, J., Desmet, J., Vandevelde, L.
Format: Article
Language:English
Subjects:
Active damping
Algorithms
Alternative energy sources
Computer simulation
Control systems
Control theory
Damping
Distributed generation
Electric resistance
Electrical measurement
Electricity distribution
Energy sources
Feeders
Low voltage
Overvoltage
Overvoltages
Penetration
Power quality
Reactive power
Renewable energy
Residential energy
Resistance
Strategy
Unbalance
Voltage unbalance
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Summary:•Solves overvoltage problems in low voltage distribution grids.•Mitigates the voltage unbalance in low voltage distribution grids.•Reduces the active power drooping in areas with high penetration of renewable energy resources. The increasing penetration of renewable energy resources imposes challenges to the distribution system operators to maintain the voltage levels and voltage unbalance within limits. The voltage control by means of reactive power in low voltage grids becomes ineffective due to the mainly resistive feeders. In this article, the performance of some classical control strategies which also include voltage control by using reactive power, active power drooping and the modified damping control strategy is investigated. The modified damping control strategy utilises a local control algorithm where appropriate action for overvoltage and/or voltage unbalance mitigation is taken based on inverter terminal voltage measurements. Furthermore, the modified damping control strategy is tested under different values of the damping conductance and the beneficial impact on the power quality is examined. All control strategies are tested on a residential low voltage feeder by means of simulations and their performance in terms of overvoltage mitigation, voltage unbalance mitigation and drooped power is assessed.
ISSN:0378-7796
1873-2046
DOI:10.1016/j.epsr.2018.12.001