| Citation:Rajaraman P.,Sundaravaradan N.A.,Mallikarjuna B.,Jaya Bharata Reddy M.,Mohanta D.K..Robust fault analysis in transmission linesusing Synchrophasor measurements[J].Protection and Control of Modern Power Systems,2018,V3(1):108-110[Copy] |
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| Abstract: |
| As more electric utilities and transmission system operators move toward the smart grid concept, robust fault
analysis has become increasingly complex. This paper proposes a methodology for the detection, classification, and
localization of transmission line faults using Synchrophasor measurements. The technique involves the extraction of
phasors from the instantaneous three-phase voltages and currents at each bus in the system which are then
decomposed into their symmetrical components. These components are sent to the phasor data concentrator
(PDC) for real-time fault analysis, which is completed within 2–3 cycles after fault inception. The advantages of this
technique are its accuracy and speed, so that fault information may be appropriately communicated to facilitate
system restoration. The proposed algorithm is independent of the transmission system topology and displays high
accuracy in its results, even with varying parameters such as fault distance, fault inception angle and fault
impedance. The proposed algorithm is validated using a three-bus system as well as the Western System
Coordinating Council (WSCC) nine bus system. The proposed algorithm is shown to accurately detect the faulted
line and classify the fault in all the test cases presented. |
| Key words: Transmission line faults, Fault analysis, Phasor measurement units, Symmetrical components |
| DOI：10.1186/s41601-018-0082-4 |
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