Distance Protection Algorithm for Long Parallel Transmission Lines With No Common Bus

This letter proposes an original zone 1 distance protection algorithm applicable to long parallel transmission lines with no common bus. The proposed algorithm fully considers the mutual coupling, capacitive, and propagation effects, assuming two lines that originate and terminate in different buses...

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Bibliographic Details
Published in:IEEE transactions on power delivery Vol. 35; no. 2; pp. 1059 - 1061
Main Authors: Araujo, Marcos R., Pereira, Clever
Format: Journal Article
Language:English
Published: New York IEEE 01.04.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
1/f noise
Admittance
Algorithms
Circuit faults
Distance protection algorithm
Electric potential
Graph theory
Impedance
impedance measurement
long parallel transmission lines
Mutual coupling
Power transmission lines
Relaying
Relays
Transmission lines
Voltage
Zero sequence current
ISSN:0885-8977, 1937-4208
Online Access:Get full text
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Summary:This letter proposes an original zone 1 distance protection algorithm applicable to long parallel transmission lines with no common bus. The proposed algorithm fully considers the mutual coupling, capacitive, and propagation effects, assuming two lines that originate and terminate in different buses. As a result, the parallel-line zero-sequence voltage is used as an additional input to the relay. This makes it applicable to different bus configurations, where it is practical to measure the parallel-line zero-sequence current and voltage. In order to make the proposed algorithm feasible for real time implementation, a solid single-line-to-ground fault is considered in its derivation. Using graph theory, it is shown that the constant zero-sequence compensation parameters approach is also suitable to the proposed algorithm for line lengths up to nearly 800 km. Therefore, it could be used in adaptive relaying schemes, functioning in conjunction with auxiliary modules for high fault resistance detection.
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ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2019.2903932