基于全生命周期的各类储能调峰效益比较

Benefits Comparison of Various Energy Storage Equipment Peak Regulation Based on the Whole Life Cycle

储能参与调峰可减少新能源弃电,基于储能在高比例新能源系统中的应用场景,以及在运行过程中产生的电量效益、容量效益和环境效益,提出了储能参与调峰的成本效益分析模型,测算了抽水蓄能、压缩空气、铅酸电池、钠硫电池、液流电池、锂离子电池的储能经济性,并采用效益系数表征储能的经济性。研究表明,在储能电量效益和容量效益有限的情况下,其投资收益少于投资成本。比对各类储能投资收益,抽蓄电站的效益系数最大,压缩空气次之,电池类储能效益系数最小,而电池类储能效益系数由高至低依次为锂离子电池、液流电池、钠硫电池和铅酸电池。研究成果可为我国储能发展提供参考。

Energy storage participating in peak load regulation can reduce the waste of new energy.Based on the application scenarios of energy storage in a high percentage of new energy systems,as well as the electricity,capacity and environmental benefits generated in the operation process,the cost-benefit analysis model of energy storage participating in peak load regulation is proposed.The economy of pumped storage,compressed air,lead-acid batteries,sodium-sulfur batteries,liquid flow battery and lithium-ion battery are calculated,and the benefit coefficient was used to characterize the economy efficiency of energy storage.Research shows that investment income is less than the investment cost when the limited energy storage capacity and capacity benefits.Relatively speaking,the efficiency coefficient of pumped-storage power stations is the largest,followed by compressed air,and the efficiency coefficient of battery energy storage is the smallest,while the efficiency coefficient of battery energy storage from high to low is lithium-ion battery,liquid flow battery,sodium sulfur battery and lead-acid battery.The research results can provide a reference for energy storage development of China.