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Integração de bancos de baterias em redes elétricas isoladas
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Abstract(s)
Neste projeto fez-se a análise, ao nível de simulação em software do efeito da integração de um sistema de baterias na rede da ilha do Porto Santo, ou seja numa rede isolada com o objetivo de apoiar a geração de energia durante os períodos de cheia e aproveitar o excesso de produção durante os períodos de vazio de carga para recarregamento do sistema, contribuíndo para a melhoria do rendimento de geração de energia elétrica na ilha.
Com este intuito, procedeu-se à implementação, com o auxílio do software PSSE (Power System Simulation for Engineering) e do Matlab/Simulink, de uma rede com base no modelo de rede elétrica da ilha do Porto Santo ao nível dos componentes que a caracterizam. Inicialmente fez-se uma análise do funcionamento atual da rede elétrica, registando-se as suas funcionalidades e modo de operação.
Em adição à rede elétrica desenvolvida em software de simulação, desenvolveu-se e simulou-se em Matlab/Simulink o modelo de um sistema de conversão de energia e banco de baterias adequado, quer ao nível dos objetivos de potência e tempo de operação pretendidos, quer ao nível da viabilidade de implementação prática analisando-se as características do sistema implementado e aplicando-as a um sistema no software PSSE para a realização de uma análise mais aprofundada dos efeitos da implementação do sistema de baterias na rede em termos de simulação vetorial e temporal.
Observou-se e analisou-se ainda o funcionamento da rede, em diversas condições de operação, para cenários diversos, sem sistema de baterias e com sistema de baterias tendo-se verificado a viabilidade de implementação do mesmo, levando à mitigação das necessidades de utilização de um segundo grupo gerador na central térmica.
In this project, the effect of the integration of a battery system in the power grid of the island of Porto Santo was analyzed at the software simulation level. Being an isolated power grid, the goal of the integration of the system is to back up the power generation during peak demmand periods and use low demand periods to recharge, improving therefore the efficiency of power generation in the island. With this purpose, using the software PSSE (Power System Simulation for Engineering) and Matlab/Simulink the model of a power grid was developed with the maximum similarity possible to the grid of the island of Porto Santo, in terms of its components characteristics. The project started with the annalyzis of the grid as it is now with the registration of the components capabilities and operation mode. In adition to the development of the power grid model, a suitable power convetion and battery system model was also developed and tested using Matlab/Simulink, in terms of power supply and response time needed, but also considering it’s implementation viability in terms of existing components and economic viability. Using the obtained results, the created model was the basis for the development of a similar model in PSSE for vector and time domain analysis. The grid’s operation was also observed and registred in diversified load and generation conditions, without and with battery system in operation, having accounted for the viability of implementation of the system in terms of electrical performance, mitigating the need for a second generator group at the thermal power plant.
In this project, the effect of the integration of a battery system in the power grid of the island of Porto Santo was analyzed at the software simulation level. Being an isolated power grid, the goal of the integration of the system is to back up the power generation during peak demmand periods and use low demand periods to recharge, improving therefore the efficiency of power generation in the island. With this purpose, using the software PSSE (Power System Simulation for Engineering) and Matlab/Simulink the model of a power grid was developed with the maximum similarity possible to the grid of the island of Porto Santo, in terms of its components characteristics. The project started with the annalyzis of the grid as it is now with the registration of the components capabilities and operation mode. In adition to the development of the power grid model, a suitable power convetion and battery system model was also developed and tested using Matlab/Simulink, in terms of power supply and response time needed, but also considering it’s implementation viability in terms of existing components and economic viability. Using the obtained results, the created model was the basis for the development of a similar model in PSSE for vector and time domain analysis. The grid’s operation was also observed and registred in diversified load and generation conditions, without and with battery system in operation, having accounted for the viability of implementation of the system in terms of electrical performance, mitigating the need for a second generator group at the thermal power plant.
Description
Keywords
Rede de energia elétrica Armazenamento de energia Banco de baterias Conversor eletrónico de potência bidirecional Electric power grid Energy storing Battery system Bidirectional switched electronic power converter Engenharia de Telecomunicações e Redes de Energia . Faculdade de Ciências Exatas e da Engenharia