Analysis of grid inertial response with high penetration of PV systems and battery energy storage

摘要

The increasing incorporation of renewable energy sources with power electronics converters into electric power systems impacts in the grid inertial response. This impact is more severe when conventional generators are replaced for photovoltaic (PV) systems and when the penetration of this renewable source is high. In this paper, the impact of replacing synchronous generators for PV generation systems in a test network is analyzed. Due to PV generation systems cannot provide an inertial response, it is proposed to use a battery energy storage system (BESS) to enhance the grid inertial response under fault conditions. A comparative study is carried out through simulations in Simulink/MATLAB to show the grid inertial response of the test system, varying the number of synchronous generators, PV modules, and BESS.