NUMERICAL ALGORITHM FOR BLOCKING AUTORECLOSURE DURING PERMANENT FAULTS ON OVERHEAD LINES

Citation
Zm. Radojevic et al., NUMERICAL ALGORITHM FOR BLOCKING AUTORECLOSURE DURING PERMANENT FAULTS ON OVERHEAD LINES, Electric power systems research, 46(1), 1998, pp. 51-58
Citations number
17
Categorie Soggetti
Engineering, Eletrical & Electronic
ISSN journal
03787796
Volume
46
Issue
1
Year of publication
1998
Pages
51 - 58
Database
ISI
SICI code
0378-7796(1998)46:1<51:NAFBAD>2.0.ZU;2-Y
Abstract
This paper presents a new numerical algorithm for blocking autoreclosu re during permanent faults on overhead lines. It is based on one termi nal input data processing and it is derived in time domain. The fault nature (arcing or arcless fault) is determined from the are voltage am plitude estimated using the least squares error technique. The faulted phase voltage is modeled as a serial connection of fault resistance a nd are voltage. The new approach does not require the line zero sequen ce parameters as input data and the algorithm is derived for the case of the most frequent single-phase to ground unsymmetrical fault. The r esults of algorithm testing through computer simulation and under labo ratory conditions are given. The influence of remote infeed, fault res istance, network topology and other factors are investigated and syste matically presented. (C) 1998 Elsevier Science S.A. All rights reserve d.