Development of a 1-MVA/1-MJ Superconducting Fault Current Limiter–Magnetic Energy Storage System for LVRT Capability Enhancement and Wind Power Smoothing

A 1-MVA/1-MJ superconducting fault current limiter-magnetic energy storage system (SFCL-MES) has been developed. The SFCL-MES utilizes one superconducting coil to both enhance the low-voltage ride-through capability of wind turbine and smooth wind power output. The developed SFCL-MES was installed and put into operation in a wind farm northwest of China. This paper presents final design and test of the four major components of SFCL-MES: power conditioning system, cryogenic system, superconducting coil, and monitoring system. Test results of the SFCL-MES are also presented. Test results show that the SFCL-MES has good performance and is able to improve the power quality and reliability of wind power generation.