From the time dimension, when the short-term (minute-level) output volatility of new energy needs to be suppressed, the main purpose of energy storage configuration is to offset the penalties of output deviations.
New energy suppliers can use energy storage facilities by installing, renting or purchasing external services, so as to control the power output within the allowable fluctuation range.
Additional research highlights that energy storage solutions swiftly adjust to grid condition changes, providing necessary active and reactive power in real-time to maintain system stability in scenarios characterized by high renewable energy penetration (Ackermann et al., 2017).
Energy storage of appropriate capacity in the power system can realize peak cutting and valley filling , reduce the pressure caused by the anti-peak regulation of new energy units, and smooth the fluctuation of new energy output .
Energy storage, primarily Lithium-Ion batteries, is introduced and optimized considering current costs, operational parameters, and their interaction with factors such as demand, solar and wind availability, investment and operational costs, and renewable energy targets. In this section, we describe the study's findings for each scenario.
For new energy units, proper deployment of energy storage facilities can promote the consumption of excess generation, increase the option of selling electricity in the high price period, participate in the competition auxiliary service market, and improve the return on total life cycle assets.