Development of a technique for calculation of the influence of generator design on power system balanced fault behaviour

Abstract

This paper presents the development of a method for quantitatively determining the potential impact that the design of a single generator may have upon the performance of power system under fault conditions. Initially it is illustrated that the impact that a single generator may have on network fault behaviour is limited by the configuration of the existing network to which the new generator is connected. These constraints are then used to develop a quantitative measure of variability in network-wide fault currents and the subsequent voltage disturbances that can be produced under balanced fault conditions by changing the design of a new generator, irrespective of its point of connection. Finally comparisons with the observed variation in network fault behaviour obtained from the simulation in PSS/E of a realistic 600-bus transmission network are used to demonstrate the technique's apparent effectiveness.