Electric Energy Storage Systems integration in Distribution Grids

TL;DR

This paper introduces a real-time control strategy using Model Predictive Control to balance demand and supply in distribution grids with renewable energy sources and storage, enhancing grid stability.

Contribution

It proposes a novel MPC-based approach for dynamic management of energy storage and traditional power sources in distribution grids with renewables.

Findings

Effective in managing demand and renewable fluctuations

Validated through simulation and real-world tests

Improves stability of distribution grids with renewable integration

Abstract

This paper presents a real time control strategy for dynamically balancing electric demand and supply at local level, in a scenario characterized by a HV/MV substation with the presence of renewable energy sources in the form of photovoltaic generators and an electric energy storage system. The substation is connected to the grid and is powered by an equivalent traditional power plant playing the role of the bulk power system. A Model Predictive Control based approach is proposed, by which the active power setpoints for the traditional power plant and the storage are continually updated over the time, depending on generation costs, storage's state of charge, foreseen demand and production from renewables. The proposed approach is validated on a simulation basis, showing its effectiveness in managing fluctuations of network demand and photovoltaic generation in test and real conditions.