Energy Storage Power Station Cases on Wind Power Supply Side

This document analyzes application cases of energy storage power stations on the wind power supply side, focusing on a project in Xi'an, China. The wind farm has a total installed capacity of 198MW, and the energy storage power station uses lithium titanate batteries with a total capacity of 20MWh, divided into four 5MWh subsystems. The main functions include smoothing power output, tracking planned output, peak shaving, and frequency regulation. The study compares three energy storage configurations (5MWh, 7.5MWh, and 15MWh) to evaluate their impact on reducing power fluctuation rates and improving the accuracy of power prediction. Results show that configuring an energy storage system significantly reduces power curve fluctuation and enhances the ability to track planned output. However, increasing storage capacity beyond a certain point yields limited improvements in utilization hours and prediction consistency, suggesting that smaller-scale configurations may be more cost-effective. The document also highlights the advantages of lithium titanate batteries, such as high safety, wide temperature range, long cycle life, and fast response, despite higher initial costs.