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Energy Storage System for Mitigating Voltage Unbalance on Low-Voltage Networks With Photovoltaic Systems

Lookup NU author(s): Professor Phil Taylor

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Abstract

The growth of building integrated photovoltaic (BIPV) systems in low-voltage (LV) networks has the potential to raise several technical issues, including voltage unbalance and distribution system efficiency. This paper proposes an energy storage system (ESS) for mitigating voltage unbalance as well as improving the efficiency of the network. In the study, a power system simulation tool, namely PSCAD, is used to model two generic LV networks, BIPV systems and an ESS in order to simulate the performance of the networks with various levels of BIPV penetrations. A control algorithm is developed and implemented in the energy storage model in order to study the ability of the ESS to mitigate network voltage unbalance and reduce losses. Experimental studies are carried out in the experimental small-scale energy zone to investigate the effectiveness of the energy storage system under various levels of PV penetration and load conditions. The simulation and experimental studies carried out clearly show the effectiveness of the ESS in reducing the voltage unbalance factor and improving the efficiency of the two networks considered.

Publication metadata

Author(s): Chua KH, Lim Y, Taylor P, Morris S, Wong J

Publication type: Article

Publication status: Published

Journal: IEEE Transactions on Power Delivery

Year: 2012

Volume: 27

Issue: 4

Pages: 1783-1790

Print publication date: 11/09/2012

ISSN (print): 0885-8977

ISSN (electronic): 1937-4208

Publisher: IEEE

URL: http://dx.doi.org/10.1109/TPWRD.2012.2195035

DOI: 10.1109/TPWRD.2012.2195035

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