The project is the largest energy storage power station in Lishui City, Zhejiang Province, which adopts Kehua's energy storage skid solution. Based on its rich experience in energy storage projects, Kehua customized and deployed 25 sets of 5MW MW skid for the project, The scientific design and optimization of the project is ensured with several rounds of technical discussions.
As the first pioneering project to combine semi-solid state batteries with energy storage system, Kehua adopted four 1.25MW high-performance energy storage converters, which were connected in parallel to a single 5,000kVA transformer, achieving a 35kV AC grid-connected output, which ensured the high efficiency and stability of power transmission. In addition, the solution has won wide acclaim from customers for its excellent energy conversion efficiency, excellent grid compatibility and highly flexible system configuration capability.
It is worth mentioning that by adopting the function of four energy storage converters in parallel, in the centralized energy storage technology path, combined with the charging and discharging characteristics of semi-solid batteries, the charging and discharging strategy is automatically adjusted to achieve intelligent management, which greatly improves the overall safety and operational stability of the system, and brings the customer a more reliable and efficient energy storage solution.
The project can store 200,000 kWh of electricity at one time, with an annual discharge of more than 60 million kWh, save about 23,000 tons of standard coal, reduce carbon dioxide emissions by about 72,000 tons. The project plays a charging treasure role of the energy storage station of “staggered peaks and storage” and “shifting peaks and filling in valleys”, and help the local energy transformation and upgrading.
