Automação de manobras em subestações de transmissão de energia elétrica.

Abstract

In critical systems, human error and its implications constitute a constant challenge for researchers, engineers and other actors involved directly or indirectly in the operation of those systems. In the context of power transmission substations the error introduced during causes an impact impacting since it increases the risk levels to the integrity of people and system. This work proposes a strategy, supported by a software tool, which aims to reduce human errors during manoeuvres on the electric system, specially the automation system of the power transmission substations. The strategy is based on the study of the human error and also on the methods employed when performing manoeu-vres at CHESF, a Brazilian Hydroelectric Company at the São Francisco (river). This error prevention strategy consists of guiding the step-by-step performance of routine manoeuvres and is restricted to actions performed through the supervisory system. Alt-hough the developed tool could completely automate a manoeuvre selected by the oper-ator, without intervention, the strategy ensures the degrees of freedom necessary for intervention during unforeseen events. To validate the strategy, tests were performed with the participation of real operators from an energy transmission substation of CHESF. Those tests simulated the execution of manoeuvres adopting the proposed strategy and associated software tool. The tests aimed to evaluate both the effectiveness of the strategy and the efficiency of the tool, when compared to performing manoeuvres without its support. The preliminary results are promising.