Design of Trading Mode for Grid-side Energy Storage Participating in Peak-shaving Assistant Service Market

doi:10.11985/2020.03.012

Abstract

Abstract:

Aiming at the problem of peak regulation caused by high proportion of renewable energy connected to the grid, a transaction mode of grid-side energy storage participating in peak shaving regulation auxiliary service market is proposed. First, the necessity of grid side energy storage participating in auxiliary service market and its direct and indirect economic benefits are analyzed. According to the current peak shaving ancillary services market, an energy storage in ancillary services market trading model is proposed, using market-based mechanisms to compensate. The clearing model of energy storage participation peak shaving auxiliary service market is established and solved by CPLEX, and a simulation example is constructed based on a certain day of the system to verify the validity of the proposed model. Finally, in order to improve the generality, the simplicity as well as the intuitive of the algorithms, the graphical user interface(GUI) of Matlab algorithm module is used for the packaging. The purpose of the proposed transaction model is to solve the problem of imperfect market mechanism of energy storage participating in auxuliary services, and to provide reference for the commercialization and application of energy storage in power system.

Key words: Grid side energy storage, economic benefits, peak adjustment assistance service, trading pattern

CLC Number:

TM561

NAN Guoliang,ZHANG Lujiang,GUO Zhimin,HE Yang,LIU Meng,QIN Jiayi,JIANG Xin. Design of Trading Mode for Grid-side Energy Storage Participating in Peak-shaving Assistant Service Market[J]. Journal of Electrical Engineering, 2020, 15(3): 88-96.

Figures/Tables 14

References 30

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	获益方面		简述
直接应用价值	峰谷电价差获利		在负荷低谷即电价较低时进行充电,在负荷高峰即电价较高时进行放电,利用此电价差进行获利
	辅助服务补偿		储能参与调峰辅助服务将具有明确的补偿机制,对储能电站响应的调峰容量进行补偿
	补助补贴		对于政府大力支持的开发项目,都有相应的补助补贴支持,这对储能电站的建设发展更加有利
间接应用价值	发电侧	电量效益	利用过剩的这部分电量在负荷低谷时段进行充电,在用电高峰时进行放电参与应用
		节煤效益	通过储能参与调峰辅助服务市场,代替了火电机组的参与,相当于减少了燃煤,从而降低了发电成本
		环境效益	储能系统的利用除了其自身性能所带来的效益外,其代替机组参与调峰减少的污染物或温室气体等带来的收益
	电网侧	延缓设备投资	通过安装储能系统,可有效解决电网的实际需求及资源浪费的问题,即可缓解电网的升级扩建所带来的经济压力
		降低电网的线损	在储能系统的常规运行方式中,其损耗的减小量是大于其增加量的,相应的其网损成本也比较低,因此能够降低网损成本
		动态扩容	通过安装储能系统实现变压器的动态扩容,能够节约成本并缩短建设周期
	用户侧	停电损失	储能系统的安装参与将提高用户供电可靠性,减少相应的电网投资,其带来的收益可通过停电经济损失来衡量
	用户侧	供电质量	通过储能电站批量化建设运行,其能够提升电能的质量,提高供电的稳定性等,因此能够带来相应的经济效益

时段/h	电价/(元/kW·h)
7：00~8：00	0.460
9：00~12：00	0.560
13：00~14：00	0.460
15：00~21：00	0.560
22：00~次日6：00	0.355