Portal de Periódicos da CAPES

Planejamento da expansão de sistemas de transmissão considerando a retirada de linhas de transmissão

2007; Linguagem: Inglês

2639-6459

Hélio Clementino dos Santos,

Islanding Detection in Power Systems

This work is a new way to formulate and solve the problem of planning for the long-term expansion of transmission systems of power. Traditionally, the problem of transmission expansion planning systems is to find the optimal plan for expansion that allows the operating system adequately to the demands of a future horizon specified. Thus, one should indicate the number of transmission lines that should be built in each path of expansion. Meanwhile, there are lines of the basic topology not help in the proper functioning of the system and may require the addition of new transmission lines producing inadequate investments. This atypical behavior of a system of transmission due to the Kirchhoff’s Law for Voltages (LTK). Thus, ties appear in a line that is at the limit of their ability to prevent transmission to other lines that are in the same loop can increase the power flow through getting underutilized. Therefore, the withdrawal of the line that this limit can improve operating in the capacity of the transmission system. This work examines this issue and, therefore, presents a proposal to solve the problem of planning so that we can add lines with transmission costs and also specified that it is possible to draw lines of transmission of topology database with cost. Thus, lines irrelevant and hindering the operation of the electrical system and that are in the topology database can be withdrawn. The problem is formulated thus solved using a specialist genetic algorithm. Lista de Figuras Figura 3-1 Duas linhas em paralelo 50 Figura 3-2 Sistema de 3 barras topologia base 51 Figura 3-3 Sistema de 3 barras topologia otima tradicional 52 Figura 3-4 Sistema de 3 barras nova topologia otima 53 Figura 3-5 Sistema de 3 barras nova topologia otima 53 Figura 4-1 Ilustracao da recombinacao 62 Figura 4-2 Ilustracao da Mutacao 63 Figura 4-3 Codificacao do problema no AG Chu-Beasley, 66 Figura 4-4 Recombinacao no AG Chu-Beasley 68 Figura 4-5 Mutacao no AG Chu-Beasley. 69 Figura 4-6 Cumpre Criterio de Diversidade. 79 Figura 4-7 Nao cumpre o Criterio de Diversidade. 79 Figura 4-8 Diagrama de blocos do teste de substituicao 80 Figura 5-1 Vetor de codificacao de uma proposta de investimento. 82 Figura 5-2 Vetor de codificacao da topologia base 83 Figura 5-3 Sistema de 6 barras Garver topologia inicial 83 Figura 5-4 Vetor de codificacao de uma proposta tipica no novo modelo. 85 Figura 5-5 Sistema de 6 barras Garver solucao otima tradicional 88 Figura 5-6 Sistema de 6 barras Garver solucao otima modificada 90 Figura 5-7 Sistema sul-brasileiro topologia base 91 Figura 5-8 Sistema sul-brasileiro: mostrando os novos caminhos 93 Figura 5-9 Sistema sul-brasileiro: otimo tradicional com redespacho 94 Figura 5-10 Sistema Sul-Brasileiro Planejamento Proposto 96 Figura A-1 Sistema 46 barras sul-brasileiro 108 Figura A-2 Sistema 6 barras topologia base. 110 Lista de Tabelas Tabela 1 Fenomeno da explosao combinatorial. 58 Tabela 2 Sistema 46 barras dados de linha. 105 Tabela 3 Sistema 46 barras dados de barra (MW) 107 Tabela 4 Sistema 6 barras dados de linha. 109 Tabela 5 Sistema 6 Barras dados de barra (MW) 109