Expected Regret-Based Method for Determining Impedance of Fault Current Limiting Superconducting Cable Incorporating Power System Uncertainties

In a medium-voltage power system, fault currents are subjected to uncertainties in lines and distributed generations. Uncertainties in fault currents in a power grid can introduce system protection problems. Superconducting cable with fault current limiting capability can be used as means to meet th...

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Bibliographic Details
Published inIEEE transactions on applied superconductivity Vol. 27; no. 4; pp. 1 - 5
Main Authors Jo, Hyung-Chul, Joo, Sung-Kwan
Format Journal Article
LanguageEnglish
Published IEEE 01.06.2017
Subjects
Fault current
Fault currents
High-temperature superconductors
Impedance
Power cables
power system protection
power system uncertainty
Relays
superconducting cable
Superconducting cables
system studies for superconducting devices
Uncertainty
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Summary:In a medium-voltage power system, fault currents are subjected to uncertainties in lines and distributed generations. Uncertainties in fault currents in a power grid can introduce system protection problems. Superconducting cable with fault current limiting capability can be used as means to meet the increasing electricity demand while resolving the issues involving system protection. In order to integrate the fault current limiting superconducting cable into a power grid, its impedance selection under fault conditions needs to consider the impact of power system uncertainties on system protection. In this paper, an expected regret-based method is proposed for determining the impedance of the fault current limiting superconducting cable incorporating the uncertainties in fault currents. The results of numerical simulations are presented to show the effectiveness of the proposed expected regret-based impedance selection method.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2017.2656784