Superconducting cables can be used as an alternative to replace the conventional ac cables in a power system. Because of the characteristics of superconducting cables, their installation in a power system can influence the fault current levels and patterns. These changes in fault current levels and patterns can further have an impact on power system protection. Therefore, in order to prevent resulting problems, there is an increasing need to analyze the impact of a superconducting cable on the power system and determine its impedance under fault conditions. This paper presents a systematic impedance selection method for a superconducting cable under fault conditions, based on the evaluation results of the impact of superconducting cables on power system protection. Numerical simulations are carried out to demonstrate the effectiveness of the proposed method.
Bibliographical noteFunding Information:
This work was supported in part by the "Human Resources Program in Energy Technology" of the Korea Institute of Energy Technology Evaluation and Planning granted financial resource from the Ministry of Trade, Industry, and Energy of Korea (No. 20154030200610) and in part by the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education, Science, and Technology (2013R1A1A2057969).
© 2015 IEEE.
- Fault current
- power system protection
- relay coordination
- superconducting cable
- system studies for superconducting devices
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering