7 resultados para Semi-domestic

em Instituto Politécnico do Porto, Portugal


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Dissertação apresentada ao Instituto Politécnico do Porto para obtenção do Grau de Mestre em Gestão das Organizações, Ramo de Gestão de Empresas Orientada pelo Professor Doutor José Freitas Santos

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Dissertação de Mestrado Apresentada ao Instituto de Contabilidade e Administração do Porto para a obtenção do grau de Mestre em Empreendedorismo e Internacionalização, sob orientação do Mestre Adalmiro Álvaro Malheiro de Castro Andrade Pereira

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The implementation of smart homes allows the domestic consumer to be an active player in the context of the Smart Grid (SG). This paper presents an intelligent house management system that is being developed by the authors to manage, in real time, the power consumption, the micro generation system, the charge and discharge of the electric or plug-in hybrid vehicles, and the participation in Demand Response (DR) programs. The paper proposes a method for the energy efficiency analysis of a domestic consumer using the SCADA House Intelligent Management (SHIM) system. The main goal of the present paper is to demonstrate the economic benefits of the implemented method. The case study considers the consumption data of some real cases of Portuguese house consumption over 30 days of June of 2012, the Portuguese real energy price, the implementation of the power limits at different times of the day and the economic benefits analysis.

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Recent and future changes in power systems, mainly in the smart grid operation context, are related to a high complexity of power networks operation. This leads to more complex communications and to higher network elements monitoring and control levels, both from network’s and consumers’ standpoint. The present work focuses on a real scenario of the LASIE laboratory, located at the Polytechnic of Porto. Laboratory systems are managed by the SCADA House Intelligent Management (SHIM), already developed by the authors based on a SCADA system. The SHIM capacities have been recently improved by including real-time simulation from Opal RT. This makes possible the integration of Matlab®/Simulink® real-time simulation models. The main goal of the present paper is to compare the advantages of the resulting improved system, while managing the energy consumption of a domestic consumer.

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The recent changes concerning the consumers’ active participation in the efficient management of load devices for one’s own interest and for the interest of the network operator, namely in the context of demand response, leads to the need for improved algorithms and tools. A continuous consumption optimization algorithm has been improved in order to better manage the shifted demand. It has been done in a simulation and user-interaction tool capable of being integrated in a multi-agent smart grid simulator already developed, and also capable of integrating several optimization algorithms to manage real and simulated loads. The case study of this paper enhances the advantages of the proposed algorithm and the benefits of using the developed simulation and user interaction tool.

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The integration of the Smart Grid concept into the electric grid brings to the need for an active participation of small and medium players. This active participation can be achieved using decentralized decisions, in which the end consumer can manage loads regarding the Smart Grid needs. The management of loads must handle the users’ preferences, wills and needs. However, the users’ preferences, wills and needs can suffer changes when faced with exceptional events. This paper proposes the integration of exceptional events into the SCADA House Intelligent Management (SHIM) system developed by the authors, to handle machine learning issues in the domestic consumption context. An illustrative application and learning case study is provided in this paper.

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Nunca a internacionalização foi tão importante para as empresas nacionais e tão utilizada pelos empresários. O franchising é, por isso, um modo de expansão internacional que os empreendedores podem utilizar quando procuram novos mercados. O formato do negócio a ser franchisado deve ser previamente testado no mercado nacional e depois adaptado às particularidades dos países em que vai ser comercializado. Esta investigação tem como objetivo compreender as principais motivações e barreiras, que o empresário encontra quando usa o franchising como forma de internacionalização, bem como as vantagens e desvantagens percebidas quando recorre a esta forma de comercialização. Para responder a estas questões de investigação foi aplicado o método qualitativo, através de um estudo de caso à empresa Onebiz, nomeadamente a marca NBB, concretizado através de uma entrevista semi-estruturada e da recolha de dados secundários, designadamente pela consulta do site da empresa. O estudo permitiu concluir que, no caso da marca NBB, que se trata de um formato de negócio que, em determinadas circunstâncias, pode ser usado pelas empresas para entrarem nos mercados externos, embora apresente virtualidades e constrangimentos que devem ser tomados em conta quando se opte por este modo de internacionalização.