NDLI: Algorithmic-Knowledge Based Adaptive Coordination in Transmission Protection

Content Provider	IEEE Xplore Digital Library
Author	Orduna, E. Garces, F. Handschin, E.
Copyright Year	1981
Abstract	Changes in power system operating conditions can affect both the reach point of distance relays and the coordination of distance and overcurrent relays. To improve the performance of the protection system, an adaptive scheme of relay settings is proposed. That is possible since protection relays became digital. This paper describes a system for online adaptive setting and coordinating of protection relays in meshed networks where the backup protection is achieved in remote form. After changes in the state of the network, an expert system (ES) performs the detection and proposes the correction of erroneous settings of protection zones and miscoordinations between relays at different stations; through an algorithm based on a fast determination of a nonminimal set of break-point relays, new time characteristics for coordination are found. Results of applying the developed system to a test network of 34 nodes, 55 branches, and 110 relays are shown.
Starting Page	63
Ending Page	63
Page Count	1
File Size	374926
File Format	PDF
ISSN	02721724
Volume Number	22
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-12-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power system relaying Protective relaying Testing Power system protection Band pass filters Digital relays Electric breakdown Transformers Adaptive systems Sulfur hexafluoride adaptive coordination Expert system break-point relays
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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