Accession Number : ADP009106
Title : Development of an Accurate Transmission Line Fault Locator Using the Global Positioning System Satellites,
Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION GREENBELT MD GODDARD SPACE FLIG HT CENTER
Personal Author(s) : Lee, Harry
Report Date : 02 DEC 1993
Pagination or Media Count : 7
Abstract : A highly accurate transmission line fault locator based on the traveling-wave principle has been developed and successfully operated within B.C. Hydro. A transmission line fault produces a fast-risetime traveling wave at the fault point which propagates along the transmission line. This fault locator system consists of traveling wave detectors located at key substations which detect and time tag the leading edge of the fault-generated traveling wave as it passes through. A master station gathers the time-tagged information from the remote detectors and determines the location of the fault. Precise time is a key element to the success of this system. This fault locator system derives its timing from the Global Positioning System (GPS) satellites. System tests confirmed the accuracy of locating faults to within the design objective of + or - 300 meters.
Descriptors : *FAULTS, *LOCATORS, *TRANSMISSION LINES, *TIME INTERVAL COUNTERS, ACCURACY, ARTIFICIAL SATELLITES, EDGES, GLOBAL POSITIONING SYSTEM, LEADING EDGES, REMOTE DETECTORS, TRAVELING WAVES, CANADA, NAVIGATION SATELLITES.
Subject Categories : Test Facilities, Equipment and Methods
Electricity and Magnetism
Distribution Statement : APPROVED FOR PUBLIC RELEASE