Zero-carbon Emission Microgrid Control Based on Photovoltaic Battery-Supercapacitor Hybrid Energy Storage

Abstract

In recent years, the popularity of photovoltaic (PV) systems has surged as a result of advancements in their efficiency and cost-effectiveness. However, the challenge of integrating photovoltaic power generation into the grid and achieving the goals of "Carbon Peak" and "Carbon Neutrality" support technologies is posed by the random fluctuations in PV energy. This paper proposes a solution to this challenge by introducing a hybrid energy storage system (HESS) that combines the complementary characteristics of a supercapacitor (SC) and a battery(BAT). The aim of this approach is to optimize the overall performance of the energy storage system (ESS) in order to maximize its efficiency and effectiveness. The HESS is used for constructing a zero-carbon agricultural farm for photovoltaic power generation. The optimization of power distribution among PV, batteries, and SCs in the HESS aims to enhance battery life and ensure the stable operation of "zero-carbon" agricultural farms. It is confirmed by the simulation results that the battery's cycle life is effectively enhanced by the proposed HESS and its control strategy. The adoption of the HESS allows for the efficient incorporation of photovoltaic power generation into the electricity grid, advancing the use of renewable energy sources(RES) and making significant contributions to the attainment of the "Carbon Peak" and "Carbon Neutrality" objectives.