An Efficient PMU-Based Fault-Location Technique for Multiterminal Transmission Lines

This paper presents a new fault-location technique for multiterminal transmission lines using the phasor measurement unit (PMU). A two-stage fault-location model is proposed, along with defining nodal current unbalance, a fault-location index. The first stage is the fault-line selector stage, which...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2014-08, Vol.29 (4), p.1675-1682
Main Authors: Jiang, Quanyuan, Wang, Bo, Li, Xingpeng
Format: Article
Language:English
Subjects:
Applied sciences
Computation
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Fault location
Faults
Indexes
Mathematical analysis
Mathematical model
multiterminal transmission line
nodal current unbalance
Operation. Load control. Reliability
phasor measurement unit (PMU)
Phasor measurement units
Phasors
Power networks and lines
Power transmission lines
Robustness
Selectors
Testing. Reliability. Quality control
Transmission line measurements
Transmission lines
Unbalance
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Summary:This paper presents a new fault-location technique for multiterminal transmission lines using the phasor measurement unit (PMU). A two-stage fault-location model is proposed, along with defining nodal current unbalance, a fault-location index. The first stage is the fault-line selector stage, which uses the nonzero elements of nodal current unbalance to determine the fault line. The second stage is used to identify the exact fault distance. The computational burden of the proposed technique is very low because it provides an analytical solution and avoids iterative computations. The performance of this technique is thoroughly evaluated under various fault conditions. Very promising simulation results verify the accuracy and robustness of the proposed technique for multiterminal transmission lines.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2014.2298865