Análise do desempenho hidroenergético de sistemas de abastecimento de água do município de Marabá

Abstract

Analysis of the performance of hydroelectric Water Supply Systems in the city of Maraba / PA, managed by the Business Unit Tocantins (UNITA), the Sanitation Company of the Para. The study was conducted in three phases, with information from the National Information System on Sanitation (NHIS) and COSANPA. In phase one was operating the routine analysis of water supply system Nova Maraba - Nova Maraba (16,738 links) and system Maraba Pioneira (2093 links) in the year 2010, with emphasis on production volumes and consumption of water and energy cost electric, in Phase 2 were determined performance indicators hydropower; ending in Phase 3 was proposed procedures for improving the management hydropower. In the survey it was found that the total volume of water produced 15.8 million m³/year required 8,817 MWh / year, resulting in spending of $ 2 million / year of electricity, which was the second largest item of operating expenses (32.2%) of COSANPA in the city of Maraba. The cost of electricity by binding to R$ 9.32 / R$ 7.66 and link / connection systems in the Nova Maraba – Cidade Nova an d Maraba Pioneira, respectively, with overall average price per kWh consumed and average expenditure of energy per cubic meter of water produced in Nova Maraba – Cidade Nova (R$ 0.23 / kWh and R$ 0.14 /m³) and Maraba Pioneira (R$ 0.21 / kWh and R$ 0.07 / m³), occurring variation in rates of energy intensity (kWh/m³) in the SAA. With the work procedures are proposed to increase the control efficiency in the operation of hydroelectric systems, such as sectorization, macro-measurement, micro-measurement, automation, which will bring positive impact in reducing costs for water supply in the city of Maraba/PA.