Optimal Operation Technology of Energy Storage Power Station Based on "Three Stations in One"

Abstract

At present, the operation mode of the "three stations in one" energy storage power station is simple and extensive, and generally runs at a depth of 90%. This operation mode cannot realize the maximum value of the energy storage power station due to lack of in-depth study of the characteristics of the battery system. Therefore, based on the characteristics of typical lithium iron phosphate battery, the mathematical model of battery cycle life-DOD characteristics is established. Then the mathematical model of calculating the optimal operation strategy of energy storage power station is constructed by using the maximum life-time total utility NPV method. The calculation method of the optimal operation strategy. This method is used to calculate the optimal operation strategy of the energy storage power station under typical conditions. It is proved that the current operation mode is not the best operation strategy, and the economic loss caused by the current current operation strategy deviating from the optimal strategy is analyzed. Further comparison of the best operation strategy under the mode of “one charge and two release” and “two charge and two release” proves that the latter is due to the former. The best operational strategy study provides a guiding method for improving the economic operation of energy storage power stations.