Modelling the influence of generator’s location on the value of sustained short circuit current

Abstract

This research aimed to analyze the influence of generators position in relation to the fault location on the value of sustained short-circuit current. Power management times where solar abound, electricity has been adopted on almost every household appliance and equipment. Supplementes have had to be acquired to handle the deficient power needed at urgent times. With these in mind generators have been adopted as a means to innovatively solve power defiicency issues. Research however, has revealed that voltage stability and power quality of electrical systems depend on proper operation of the Automatic Voltage Regulators (AVR) of generators. In this paper, we used a case study approach to present the method for calculating the sustained short circuit currents, taking into account the mode of representation of the synchronous generators according to the fault location. In general, synchronous generators are equipped with automated voltage controllers and their representation in equivalent circuit of positive sequence system depends on the electrical distance (impedance) between the fault location and terminals of the synchronous generator.