Mitsubishi Electric Corporation announced its delivery of the world's largest battery energy-storage system (BESS) with 50-MW output and 300-MWh rated capacity, to Kyushu Electric Power Co. The system, which is part of a pilot project to balance supply and demand via high-capacity energy-storage systems, was installed at the Buzen Substation in Buzen, Fukuoka Prefecture.
The facility offers energy-storage capabilities similar to those of pumped hydro facilities while helping to improve the balance of supply and demand when renewable energy sources are used. The energy storage system achieves effective overall control and improved operational efficiency through the use of Mitsubishi Electric’s BLEnDer® RE battery SCADA system to monitor and control modules in a multiple module system. Also, containerized, compact (double stacked) battery modules help to reduce the facility footprint, installation time and construction costs.
The system configuration includes: Battery SCADA System Efficient battery control achieved via BLEnDer RE Sodium Sulfur (NaS) Battery; World-leading 50MW / 300MWh; 252 containers, each providing 200kW in 63 4-module units; 14,000m2 area (100m x 140m); Produced by NGK Insulators, Ltd.; Power Conditioner 800kW x 63 units; Substation Equipment 66 / 6.6kV transformer x 2 units, other 6.6kV substation equipment
BLEnDer RE is primarily an energy-management system that monitors and controls energy storage within the SmartGrid power supply and demand system. The system smooths variations in frequency and power flow caused by renewable generation via battery control. In addition, it enables efficient operation via power supply control through the coordinated use of multiple-generation sources and batteries, as well as technology for optimizing operation, stoppage timing and output of the various sources.
