A microcomputer-based methodology for distance protection on long uhv transmission lines using symmetrical components
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Date
2012
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Abstract
This paper proposes a methodology for the long UHV
transmission lines distance protection using microprocessor for
fault detection, isolation and auto reclosing processes. In the
present era, with the development of microprocessor technology,
their extra efficient controlling and computing abilities can be
utilized in distance relaying for efficient computing of fault
distance and the type of fault occurred on the transmission line.
Using Symmetrical component theory a single performance
equation is developed that will encounter all type of faults on
transmission lines regardless of the nature of the fault.
Microprocessor will process on these sequence components to
estimate the type of fault and the distance of fault from the relay.
ETAP is used as a simulation tool to obtain the desired results.
Although the formulation described here is independent of
hardware yet it provides a complete analytical base for distance
protection and is analyzed for different types of fault conditions
using simulation tools.
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Keywords
Symmetrical Components, Distance Protection, Sequence Circuits, Faulty Phase Classification
Citation
Asia Pacific Power and Energy Engineering Conference (APPEEC) , Vol. 5 No. 12, March 2012