Research on Measure Point and Protection Configuration for 500 kV Superconducting Fault Current Limiter
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Abstract
Superconducting fault current limiter (SFCL) is an effective measure to limit short circuit current in power grid. The equipment research and development of 500 kV SFCL have been greatly developed. This paper made a study on measure point and protection configuration for 500 kV SFCL. Firstly, working principle of SFCL was introduced. Then based on the three major single line diagrams, the corresponding measure point and protection configurations were proposed. Finally, the cooperation between different protection schemes was discussed. Compared with the analysis, the scheme causing the lower affect to the reliability of power grid is found. The feasibility of the SFCL in the measure point and protection configuration is demonstrated, which has provided technical preparation for the implementation of the relevant projects.
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