Abstract
Nowadays, the energy storage system (ESS) deployment is a promising solution for various perspectives of grid support. In particular, photovoltaic (PV) penetration is being increased rapidly in a present distribution network, causing voltage variation and violation issues. Hence, ESS has widely been utilized to mitigate voltage issues in distribution networks. This paper presents a study on the management of state of charge (SoC) of ESS for voltage regulation application in distribution networks. The voltage regulation strategy is proposed incorporating with SoC management. The SoC management strategy is applied to maintain the SoC of ESS within the desired value. In this paper, the SoC management issue has been investigated and analyzed by DIgSILENT Powerfactory software, according to the technical limitations of ESS. The simulation results show that the ESS requires appropriate SoC management to maintain simultaneously both aspects associated with the capability for voltage regulation and its energy availability.
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