Laboratory investigation of an amplitude comparator based directional comparison digital protection scheme
A directional comparison digital protection scheme has been implemented with a 16-b single-board computer at each end of a physical model of a transmission line, with communication between the two ends. The protection algorithm makes use of the fundamental frequency components of the deviation signa...
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Published in | IEEE transactions on power delivery Vol. 5; no. 4; pp. 1687 - 1694 |
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Main Authors | , , , , |
Format | Journal Article Conference Proceeding |
Language | English |
Published |
New York, NY
IEEE
01.10.1990
Institute of Electrical and Electronics Engineers |
Subjects | |
Online Access | Get full text |
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Summary: | A directional comparison digital protection scheme has been implemented with a 16-b single-board computer at each end of a physical model of a transmission line, with communication between the two ends. The protection algorithm makes use of the fundamental frequency components of the deviation signals of the voltage and phase-shifted current. Software routines have been developed for fault monitoring, directional determination, and the trip/block decision. Graphics features incorporated in the software are explained. Tests for various faults conducted on the physical model of a double-circuit transmission line show that the direction to a fault is determined in 3 to 7 ms. The blocking features of the relay are demonstrated.< > |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0885-8977 1937-4208 |
DOI: | 10.1109/61.103663 |