1-GWh Diurnal Load-LeveBing Superconducting Magnetic Energy Storage System Reference Design Appendix G:Design Study:Thyristor Converter Stations for Use With Superconducting Magnetic Energy Storage Systems

摘要

The costs for the power conversion equipment for four different SMES systems were developed. These were 1- and 5-GWh units for 4- and 8-h charge periods. Only constant power operation of the converter was considered with 10% of the maximum energy remaining in the magnet at the end of the discharge cycle. The cost increases almost linearly with the maximum coil current between 30 kA and 150 kA, and the cost for a 4-h charge system is about 20% lower than for an 8-h charge system. The converter terminal cost is estimated to be $40/kW of installed power for a 1-GWh 4-h charge system at 30 kA maximum current and $60/kW of installed power for a 5-GWh 4-h charge system at 50 kA maximum current.