SIMULATION OF ENERGY STORAGE IN BATTERIES FOR THE UTILIZATION IN MODELING OF PHOTOVOLTAIC SYSTEMS CONNECTED TO THE GRID

Abstract

The integration of photovoltaic systems in the energy matrix is a challenge. In particular, in the Brazilian reality, with a strongly centralized system presents a greater difficulty to manage small scale energy sources. Technologies for energy storage are an option for the safe management of these sources, due to its intermittency. Energy storage in batteries have been the subject of increasing number of researchs so that their use be feasible in the development and improvement of technologies, as well as in the application possibilities. For this purpose, reliable simulation methodologies are required to serve in support of the planning and operation of the interconnected electric system for a safe insertion of such resource. Through this work we propose a methodology for simulation of energy storage in stationary batteries type lead - acid valve regulated in order to be use by the managers of the electric system. The methodology used was the KiBam model, and adapted for simulating batteries, taking in account the manufacturer data. To validate the system, results obtained with the battery 12MC150, from line Clean of Moura®, simulated and real were compared. The results showed an error of approximately 1% for both the charge and for the discharge of the battery, representing a positive result for this model.