Resumo

MORA FLOREZ, Juan José; PEREZ HERNANDEZ, Lucas Paúl  e  PEREZ LONDONO, Sandra Milena. Using ANFIS networks and current signals for locating faults in power distribution systems. Ing. Investig. [online]. 2006, vol.26, n.3, pp.93-99. ISSN 0120-5609.

Fault location in power distribution systems is very important because of power service continuity requirements, mainly imposed by current electricity market quality standards. A fault location approach is adopted in this paper using current waveforms as measured at electricity substations, knowledge of protection-device settings and ANFIS networks. Good results were obtained from tests carried out in a prototype power distribution system to locate where faults were occurring. These results revealed variation in fault-locator precision due to using different current signal characteristics or descriptors. An error lower than 1% was obtained in the best case. Two more alternatives are also presented where errors were lower than 4%; such results validate the approach presented here.

Palavras-chave : power quality; fault location; signal characterisation; ANFIS networks.

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