LAPSE:2023.25604
Published Article
LAPSE:2023.25604
New Infeed Correction Methods for Distance Protection in Distribution Systems
March 29, 2023
The reliability and security of power systems may be jeopardized by the increase in the amounts of renewable generation and the uncertainties produced by these devices. In particular, the protection schemes of traditional power systems have been challenged by the integration of distributed generation (DG) resources. Distance relays (DRs), which have been mainly employed to protect transmission systems, are increasingly proposed as one of the solutions to protect distribution systems with a heavy penetration of DGs. However, conventional distance protection faces several drawbacks that might lead to maloperation. One of those challenges is the “infeed effect”, which causes the impedance seen by the distance relay to be larger than the actual positive-sequence line impedance between the fault and relay location. This paper proposes three new methods to estimate the distance to the fault in the presence of infeeds, whether in a radial distribution feeder or the transmission line. Unlike other solution methodologies in the literature that require communication links to estimate the distance to the fault, the proposed methods only need the local measurement (i.e., the voltage and current measurements at the location of the distance relay) to do the same. The performance of the method is demonstrated with a radial distribution system model in PSCAD™/EMTDC™.
Record ID
Keywords
distance relay, distributed generation, faults, infeed effect, protection, PSCAD
Subject
Suggested Citation
Hariri F, Crow M. New Infeed Correction Methods for Distance Protection in Distribution Systems. (2023). LAPSE:2023.25604
Author Affiliations
Journal Name
Energies
Volume
14
Issue
15
First Page
4652
Year
2021
Publication Date
2021-07-31
Published Version
ISSN
1996-1073
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Original Submission
Other Meta
PII: en14154652, Publication Type: Journal Article
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Published Article
LAPSE:2023.25604
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doi:10.3390/en14154652
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[v1] (Original Submission)
Mar 29, 2023
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Mar 29, 2023
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