DocumentCode :
3219257
Title :
An approach to mitigate the impact of distributed generation on the Overcurrent Protection scheme for radial feeders
Author :
Funmilayo, Hamed B. ; Butler-Purry, Karen L.
Author_Institution :
Electr. & Comput. Eng. Dept., Texas A&M Univ., College Station, TX
fYear :
2009
fDate :
15-18 March 2009
Firstpage :
1
Lastpage :
11
Abstract :
Increased distributed generation (DG) presence on radial distribution feeders is becoming a common trend. The existing overcurrent protection (OCP) scheme on such feeders consists mainly of overcurrent protection devices (OCPDs) such as fuses and reclosers. When DG is placed on the remote end of a 3-phase lateral, the radial configuration of the feeder is lost. As a result, OCP issues may arise which lead to permanent outages even when the fault is temporary. This paper presents a new approach that revises the existing OCP scheme of a radial feeder to address the presence of DG. The fuses on the laterals with DGs are removed and multi-function recloser/relays (MFRs) are added to address three specific OCP issues; fuse fatigue, nuisance fuse blowing, and fuse misoperation. The new approach requires no communication medium, provides backup protection for the DG unit, and allows the remaining laterals to retain their existing protective devices. The results are reported using the IEEE 34 node radial test feeder to validate the new approach and the IEEE 123 node radial test feeder to generalize the approach. The new approach completely mitigated the fuse misoperation and nuisance fuse blowing issues and most of the fuse fatigue issues that were present on the radial test feeders.
Keywords :
distributed power generation; fault diagnosis; overcurrent protection; distributed generation; fuse fatigue; fuse misoperation; multi-function recloser-relays; nuisance fuse blowing; overcurrent protection devices; overcurrent protection scheme; radial distribution feeders; Distributed control; Equations; Fatigue; Fault currents; Fuses; Power system protection; Propagation losses; Protective relaying; Substation protection; Testing; Distributed generation; distribution feeders; miscoordination; overcurrent protection; power distribution protection; radial test feeders;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Systems Conference and Exposition, 2009. PSCE '09. IEEE/PES
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-3810-5
Electronic_ISBN :
978-1-4244-3811-2
Type :
conf
DOI :
10.1109/PSCE.2009.4840233
Filename :
4840233
Link To Document :
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