Multi-energy storage is an effective way to improve the renewable energy consumption level of integrated energy system. However, with the increase of coupled energy storage equipment, the complexity of the system increases. Unstable operation and low energy efficiency caused by the complexity and uncertainty of the system have restricted the development of integrated energy system. Therefore, this paper proposes to integrate electricity storage, heat storage and hydrogen storage into the integrated energy system, and researches on multi-timescale optimization. From the construction of the system model to proposing multi-timescale optimization schemes such as day-ahead optimal scheduling, intra-day rolling optimization, and real-time adjustment, the advantages of multi-energy storage are fully utilized to solve the impact of source-load uncertainty on the system. The results show that the total power storage is adjusted to 12.42199 MW unbalanced power, the community renewable energy consumption level is increased by 0.42％, the electricity purchase cost is reduced by 3.5％, and the carbon tax is reduced by 1.5％. This shows that the proposed multi-timescale optimal operation method makes the system run more smoothly by flexibly adjusting the output of each device, and improves the stability of the system and the level of renewable energy consumption.
关键词
多元储能/多时间尺度/综合能源系统/运行优化
Key words
multi-energy storage/multi-timescale/integrated energy system/operation optimization
维普
万方数据