Avaliação da qualidade da energia elétrica em Campina Grande, quanto à continuidade do serviço.

Abstract

Electric energy is essential for the society development. Nowadays, quality is one of its main characteristics. Following a world tendency, the Brazilian society has been increasing its demand in relation to Power Quality (PQ) in a supply level through setting and controling evaluation indexes. This study makes an evaluation of PQ indexes in Campina Grande city, supplied by Companhia Energetica da Borborema-CELB. The data used for the index calculation correspond to the periods of 1996, 1997 and 1998. The study carried out a PQ review in Brazil classifies the disturbance causes in electric systems and presents the main orders that regulate quality at the supply level. Comparisons are made among local figures for some indexes and values found at other countries. Each index employed in the study is defined with its characteristics and mathematical expressions. The data collection procedures and the evaluation of the indexes are described. From the obtained results come considerations on the power quality and the causes that contribute for its degradation are put forward. The conclusions indicate improvement possibilities for the PQ and suggest more efficient procedures in the data gathering procedures for the index calculation.