NDLI: Optimization algorithm for fault location in transmission lines considering current transformers saturation

Content Provider	IEEE Xplore Digital Library
Author	Pereira, C.Ed.M. Zanetta Jr., L.C.
Copyright Year	1986
Abstract	This paper deals with fault location calculations that use voltages and currents during transient conditions and pre fault values. The method uses transmission line measurements at both terminals and its main contribution is the possibility of fault location even with the lack of some current measurements as in the case of current transformers saturation or even when data acquisition process fails. The equations are based on two-port line representation that can be applied to transposed or untransposed lines and equivalent impedances at the terminals are not needed. With the proposed formulation, the algorithm does not use simplifying assumptions to calculate the fault distance and the fault resistance simultaneously. For phase-to-ground faults, the possibility of lack of accurate current measurement in one CT is assumed. For double phase-to-ground faults and three phase faults, the lack of measurements in two or three CTs, respectively, is also assumed. The results, considering different line configurations and fault types, are presented, showing the accuracy and efficiency of the proposed method.
Sponsorship	IEEE Power Engineering Society
Starting Page	603
Ending Page	608
Page Count	6
File Size	259225
File Format	PDF
ISSN	08858977
Volume Number	20
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault location Transmission lines Current transformers Current measurement Power system transients Transmission line measurements Data acquisition Equations Impedance Electrical resistance measurement fault location Distance measurement EHV transmission lines fault diagnosis
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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