Comprehensive renewable energy system energy storage capacity optimal configuration method based on multiple time scales

Abstract

The invention provides an energy storage capacity optimal configuration method based on multiple time scales, which solves the coordination problem of power dispatching supply and demand balance and energy storage system investment decision under multiple time scales through a designed multi-target double-layer optimization model, and optimizes and synthesizes the stability and economy of a renewable energy system. According to the method, the problem of renewable energy fluctuation under long and short time scales is considered firstly, an inner-layer model with minimum power fluctuation under the short time scale is constructed by taking the minimum real-time scheduling error as a target function, and supply and demand stability is ensured in hour-level short time scale scheduling. In day-level medium and long term time scale scheduling, an outer layer regulation and control model under a medium and long term time scale is constructed by taking intra-day scheduling power balance and minimum economic cost as objective functions, and renewable energy fluctuation stabilization and energy storage system cost optimization under multiple time scales are ensured.

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