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Developments in techniques for simulating faults in e.h.v. transmission systems

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2 Author(s)
Johns, A.T. ; University of Bath, Power Systems Laboratory, School of Electrical Engineering, Bath, UK ; El-Kateb, M.M.T.

In the study of the faulted response of power systems, synchronous sources are often represented by subtransient impedances. Alternatively, more elegant synchronous-source models are often combined with simplified models of transmission-line interconnections. In the paper, methods are developed which enable more accurate models of synchronous sources to be combined with generator/transformer and distributed-parameter frequency-variant transmission-line interconnections. The methods are developed by reference to a single generator connected to an assumed-infinite busbar via a delta-star transformer and a transmission line, the techniques relating to digitally simulating the synchronous source having been established in an earlier paper. The paper concludes with a presentation of some computational results relating to faults at the remote end of a 400 kV interconnection of length 160 km.

Published in:

Electrical Engineers, Proceedings of the Institution of  (Volume:125 ,  Issue: 3 )