Modelling and Simulation of Hybrid PV & BES Systems as Flexible Resources in Smartgrids – Sundom Smart Grid Case

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Abstract
Ever-growing energy needs and larger penetration of renewable energy in the power grids with higher intermittency in power generation cause the need for flexible energy sources. Flexible sources such as distributed generation, demand response, electric vehicles etc. play a dominant role in providing flexibility in services such as frequency, voltage and power balance control in smart grids. Given the present state of technology and economic maturity of battery energy storage systems (BESS), has a lot of potential to fulfill increasing power systems rapid, short-term flexibility needs. In this paper, a case study on hybrid photovoltaic (PV) arrays & lithium ion based BESS as flexible energy sources are integrated in medium voltage (MV) network side in local pilot network, Sundom Smart Grid (SSG). Vaasa, Finland. Sundom Smart grid is modelled based on real time data on energy consumption and generation streamed from network. Role of batteries as a flexible energy source in the PV & BESS hybrid for power balance flexibility application is demonstrated by means of Matlab simulations.

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