Alocação de religadores automáticos em uma subestação de energia elétrica

Abstract

This work aims to reduce the number of damaged reclosers and evaluate the electric power distribution process in a 69 kV substation in the city of Manaus. To achieve the objective, the allocation of reclosers was evaluated, with installation at the outputs of 13.8 kV buses, with a descriptive methodology, based on a technical literature study with specifications of equipment and substation techniques, in addition to of national and international normative standards from a construction standard of a 69 kV substation. It was found that the energized and de-energized devices performed as expected, demonstrating the possibility of adapting the reclosers to the 13.8 kV bars, operating satisfactorily within the estimated times for implementation in field equipment and commissioning with the system. Using the recloser allocation, the number of disconnections was reduced by 95.1% and the disconnection time by 94.4%. With the application of the payoff method, using the quantity of disconnections of two circuit breakers during the year 2018 and the amount spent by the company in moving a team to resolve the situation of accidental disconnections, a profit of BRL 62,252 was obtained .87 due to savings over 5 years.