NDLI: Ground Fault Distance Protection for Paralleled Transmission Lines

Content Provider	IEEE Xplore Digital Library
Author	Ke Jia Tianshu Bi Li, W. Qixun Yang
Copyright Year	1972
Abstract	Paralleled transmission lines on the same tower can increase the power transmission capacity but bring challenges to the protection unit. The conventional distance protection schemes can easily be influenced and malfunction. This paper investigated the most commonly occurred ground fault scenarios and proposed two first zone distance protection schemes based on the measurement from only the single line of one terminal for single-phase ground faults and cross-country ground faults separately. A 500 kV and 300 mk parallel transmission testing system was built in the PSCAD/EMTDC with the parameters referring to a real operating site. The results derived from the simulation show that the proposed method can provide good fault distance estimation accuracy for different ground fault scenarios with variable fault resistance. Compared with the traditional double-circuit line protection method, the proposed method which requires the same equipment investment and offers better performance is more suitable for industry application.
Sponsorship	IEEE Industry Applications Society
Starting Page	5228
Ending Page	5236
Page Count	9
File Size	1324216
File Format	PDF
ISSN	00939994
Volume Number	51
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Circuit faults Impedance Voltage measurement Power transmission lines Transmission line measurements Resistance Radio frequency measurements double-end transients fault location Double-end
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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