Stochastic Assessment of Voltage Unbalance Mitigation by Home Battery System in Low Voltage Grid with Single-Phase Solar Power Generation

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Conference article in proceedings
Date
2018-12-10
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Degree programme
Language
en
Pages
6
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Proceedings of the 2018 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2018, IEEE PES Innovative Smart Grid Technologies Conference Europe
Abstract
Modern electrical power system is evolving to a smarter and agile system, which will support society's sustainable development. The low voltage grid should be capable of withstanding new challenges such as reverse power flows and voltage unbalance (VU) caused by distributed generation. In this paper, the mitigation possibilities of the VU caused by single-phase-connected photovoltaics (PV) are analysed with Tesla Powerwall 2 battery energy storage systems (BESS) added to the grid. Three different BESS phase connection strategies are modelled and the VU is assessed with Monte Carlo Simulation (MCS). A low voltage distribution grid in Sweden is considered with different PV and BESS penetration levels and the applied method for VU assessment is validated. Simulation results reveal the effectiveness of VU mitigation by connecting PV and BESS to the same phase.
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Keywords
low voltage, impedance, stochastic processes, power systems, mathematical model, batteries, solar power generation
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Citation
Puvi , V & Lehtonen , M 2018 , Stochastic Assessment of Voltage Unbalance Mitigation by Home Battery System in Low Voltage Grid with Single-Phase Solar Power Generation . in Proceedings of the 2018 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2018 . , 8571860 , IEEE PES Innovative Smart Grid Technologies Conference Europe , IEEE , IEEE PES Europe Conference on Innovative Smart Grid Technologies , Sarajevo , Bosnia and Herzegovina , 21/10/2018 . https://doi.org/10.1109/ISGTEurope.2018.8571860