Title :
Overcurrent Coordination Study of the Electrical System of PDVSA Sur, Barinas
Author :
Velazco, Fabiola Velazco ; Rivas, Richard A. ; Guerrero, Nayali
Author_Institution :
Div. of Commercialization, CVG Electrificacion del Caroni
Abstract :
In this paper part of the results of an overcurrent coordination study for the 34.5/13.8-kV system of PDVSA Sur, operational area of Barinas, Venezuela, are presented. After previous load flow and short-circuit calculations, the protective devices of each distribution circuit were analyzed to choose new pickup currents, time-current characteristic (TCC) curves, time dials, and instantaneous settings for the phase-fault and ground-fault protection functions. The new settings improved the times of response of the short-circuit protective devices, the coordination time intervals, and the selectivity and reliability of the system
Keywords :
fault diagnosis; overcurrent protection; coordination time intervals; distribution circuit; ground-fault protection functions; instantaneous settings; overcurrent coordination; phase-fault protective functions; protective devices; short-circuit calculations; system reliability; time-current characteristic; Circuit faults; Current transformers; Fuses; Load flow; Oil insulation; Petroleum; Production; Protective relaying; Substation protection; Surges; Coordination Time Interval; Fuse; Pickup Current; Protection System; Recloser; Time Dial; Time-Current Characteristic (TCC) Curve;
Conference_Titel :
Transmission & Distribution Conference and Exposition: Latin America, 2006. TDC '06. IEEE/PES
Conference_Location :
Caracas
Print_ISBN :
1-4244-0287-5
Electronic_ISBN :
1-4244-0288-3
DOI :
10.1109/TDCLA.2006.311499
