Análise da execução de projeto de montagem de turbinas eólicas

Abstract

The wind generation has been showing significant growth since 2011 in the Brazilian electric power matrix. Between 2014 and 2015, it grew 77.1%, with about 21.6 TWh of energy generated, reaching 3.5% of the electric matrix. In addition to presenting itself as a valuable vector for the services market, industry and the development of the country's general infrastructure. The assembly of the turbines, as part of the wind farm implementation process, is a complex activity that requires a Rigorous execution planning, mainly to meet the feasibility requirements with regard to scope, time and cost. In this reality, project management under the PMBOK perspective emerges as one of the means to achieve the results expected by the companies in the sector. Where the greatest difficulties in complying with the project execution times are related to the transportation of the turbine parts, from the plant to the assembly site, and the execution of the electromechanical assembly, mainly considering the operation with cranes. In this context, this study has as general objective to analyze the deviations of the execution considering the planning of the wind turbine assembly project. The methodology used includes an exploratory, descriptive, documentary and bibliographic research, characterizing itself as a case study, planned and carried out in seven stages, which includes: identification and structuring of the problem; Selection of assembly design; Characterization of the selected project; field research; Estimation of wind turbine assembly costs; Quality control analysis; And, analysis of results. The research delimited for the study, the following processes (packages of services): the transport of the parts of the wind turbine; The tower T1, T2 (LTM 1500) assembly; And, the assembly of T3, nacelle and rotor (LR 1600). The results indicated that only transportation was able to meet the pre-established deadlines in project planning. Overall, the project had an increment of time, with 4 (four) weeks of delay, about 60% increase in the time planned for execution. Regarding the cost, it was verified that the main loss was in relation to the expected revenue, if the wind turbines had entered commercial operation on the expected date, which represented values in the order of R$1,806,000.00 (One million and eight hundred And six thousand reais), in addition to the quality costs, which were absorbed by the contractual issues of the services, so that they could not be measured in the billing losses account.