Over-current protection for phase faults is very common and protection schemes based on different types of relays are presented in the literature. Even though these published works present protection coordination of radial, parallel and ring feeders, a systematic approach to the handling of a complex network is not found. This paper aims to provide a systematic approach for protection coordination of a complex but realistic network. A case study was used to elaborate the different steps involved and references were given to applicable standards.
‘Overcurrent protection for phase and earth faults’, in Protective Relays Application Guide (GEC Alstom T & D Protection & Control Limited, 1987), pp. 129–157.
2.
GloverJ. D.SarmaM., ‘System Protection’, in Power System Analysis and Design (PWS, New York, 1994), pp. 371–425.
3.
WeedyP. M., ‘Protection’, in Electric Power Systems (John Wiley, Chichester, 1987), pp. 478–517.
4.
BanerjeeH. N., ‘Computer application in power system protection’, in Proc. 1988 IEEE Southern Tier Technical Conference, 19 October 1988, pp. 15–21.
5.
User Manual of Interactive Power Systems Analysis (IPSA) program (IPSA Power Ltd, 2004).
6.
HindleP. J.SandersonJ. V. H., ‘Overcurrent protection co-ordination: A modern approach for modern devices’ in Proc. Sixth International Conference on Developments in Power System Protection, 25–27 March 1997, pp. 62–65.
