== Abstract ==

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The constantly decreasing prices of the battery storage systems make them a very attractive solution for mitigating over voltages and voltage unbalance in low voltage grids with high penetration of renewable energy resources. A centralised storage device, connected at the end of the feeder can be a very effective solution for dealing with over voltages. The classical positive-sequence control strategy is usually employed in these devices to ensure a power exchange between the grid and the battery and vice versa. Nevertheless, the voltage unbalance cannot be mitigated by the classical control strategies. In this article, a modified three-phase damping control strategy is used to discharge and charge the battery storage system. This control strategy has an improved resistive behavior towards the zero- and negative-sequence components which mitigates the voltage unbalance by injecting or drawing asymmetrical phase currents. Thus both power quality problems are mitigated.

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== Original document ==

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The different versions of the original document can be found in:

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* [http://xplorestaging.ieee.org/ielx7/8540960/8566698/08566779.pdf?arnumber=8566779 http://xplorestaging.ieee.org/ielx7/8540960/8566698/08566779.pdf?arnumber=8566779],

: [http://dx.doi.org/10.1109/icrera.2018.8566779 http://dx.doi.org/10.1109/icrera.2018.8566779]

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* [https://biblio.ugent.be/publication/8577644 https://biblio.ugent.be/publication/8577644],

: [http://hdl.handle.net/1854/LU-8577644 http://hdl.handle.net/1854/LU-8577644],

: [https://biblio.ugent.be/publication/8577644/file/8577645 https://biblio.ugent.be/publication/8577644/file/8577645]

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* [https://biblio.ugent.be/publication/8577644 https://biblio.ugent.be/publication/8577644],

: [https://academic.microsoft.com/#/detail/2904837943 https://academic.microsoft.com/#/detail/2904837943]

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