Modelagem e supervisão de bancos de baterias em sistemas de múltiplas fontes de energia utilizando redes de petri.

Abstract

Systems of Multiple Sources of Energy (SMSEs) are electric systems composed by two or more sources of energy, renewable and not renewable, to generate eléctrica!energy. Isolated SMSEs, usually for económica!reasons, use energy storage systems based on Lead-acid batteries. However, Lead-acid batteries nave its useful lifetime directly related with the number of charge and discharge cycíes to the which they are submitted, operation temperature, time with low state of charge, incomplete charge, etc. Therefore, predicting the lifetime of Lead-acid batteries in these operation conditions, is a difficult task. Hybrid Systems (HSs), are systems where the behavior is determined by the interaction among two dynamics: a continuous and other to discrete events. In this work, SMSEs are modeled and analyzed like HSs by the use of the Differential Hybrid Petri Nets. In this manner, the objective is to study SMFEs by the use of methods that take into account the interactions among their dynamics, aiding the planners of these systems during the specification phases, development and project. In summary, SMSEs with different operating profiles, depending on the cornplexity of the system and operation strategy, can be supervised and analyzed with regard to their impact on the performance and lifetime of the energy storage system.