Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-10-05T19:41:53Z No. of bitstreams: 1 StefersonAlmeidaAderaldo_DISSERT.pdf: 3479668 bytes, checksum: b286a25753db4bf4b6de3736aeb27914 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-10-17T23:43:09Z (GMT) No. of bitstreams: 1 StefersonAlmeidaAderaldo_DISSERT.pdf: 3479668 bytes, checksum: b286a25753db4bf4b6de3736aeb27914 (MD5) / Made available in DSpace on 2017-10-17T23:43:09Z (GMT). No. of bitstreams: 1 StefersonAlmeidaAderaldo_DISSERT.pdf: 3479668 bytes, checksum: b286a25753db4bf4b6de3736aeb27914 (MD5) Previous issue date: 2017-07-28 / No Brasil, h? 794.699 km de redes e apenas 12.348 km s?o de redes subterr?neas, ou seja, menos de 2%. Por?m, estima-se que cerca de 30% do total de parques e?licos em opera??o, mais de 3.000MW, foram constru?dos utilizando redes subterr?neas, cujo dimensionamento adequado ? de fundamental import?ncia para o correto funcionamento e a garantia de retorno dos investimentos. Projetos atuais e programas computacionais de suporte a projetos levam em considera??o apenas crit?rios de capacidade de condu??o, queda de tens?o e/ou apresentam as perdas. Esses crit?rios adotam os requisitos m?nimos para o correto funcionamento da instala??o e, consequentemente, o menor custo inicial. No entanto, ao longo da vida do parque, as perdas e custos operacionais podem ser bem maiores, reduzindo os lucros nos demais anos. Devido ?s redes subterr?neas terem alto custo e a necessidade de manter elevados ?ndices de confiabilidade e de opera??o para o seu uso, torna-se necess?rio desenvolver mais ferramentas para o devido dimensionamento, a fim de garantir uma aloca??o otimizada de recursos e uma efici?ncia operacional por meio da redu??o de custos operacionais, aumento da vida ?til, assim como evitar a perda de receita por lucro cessante. Este trabalho tem como objetivo realizar a an?lise dos principais crit?rios t?cnicos e econ?micos para o dimensionamento de redes subterr?neas de m?dia tens?o em parques e?licos, visando a otimiza??o de custo ao longo da vida e melhoria de aspectos t?cnicos, al?m do desenvolvimento de um programa computacional que permita integrar as ferramentas t?cnicas e econ?micas, com uma metodologia espec?fica, baseada em normas para o dimensionamento adequado e otimizado. / In Brazil there are 794,699 km of networks and only 12,348 km are of underground networks, that is, less than 2%, and the others are from overhead electricity distribution networks. However, it is estimated that about 30% of the total wind farms in operation, that is, more than 3,000MW were built using underground networks. The proper sizing of these networks is of fundamental importance for correct functioning and guarantee of return of investments. Current projects and computer programs for project support take into account only criteria for conduction, voltage drop and / or loss of energy. These criteria adopt the minimum requirements for the correct operation of the installation and, consequently, the lowest initial cost. However, during the lifecycle of the windfarm, losses and operating costs can be much higher, reducing profits in other years. Due to this type of network has a high cost and the need to maintain high levels of reliability and operation for its use, it is necessary to develop more tools for proper sizing to ensure optimum resource allocation and operational efficiency, by reducing operational costs, increasing the useful life, as well as avoiding loss of revenue due to lost profits. The objective of the present work is to analyze the main technical and economic criteria for the design of medium voltage underground networks in wind farms aiming at cost optimization throughout life, as well as the development of a computer program that allows integrating the technical and economic tools, with a specific methodology based on norms for the adequate dimensioning.