用于新能源一次调频的储能经济配置研究

Research on Economic Configuration of Energy Storage for Assisting New Energy in Primary Frequency Regulation

新能源参与电力系统一次调频时需要解决能量来源问题,配置储能是一种有效的方式。在实际应用中储能配置需要充分考虑物理特性约束、单位成本等多方面的因素,综合比较技术经济性。但是,现有文献所提出的储能系统配置方案通常对运行场景的分析较多,对各类工程约束和储能的实际成本数据则考虑较少。基于储能的实际成本数据,在充分考虑储能系统物理特性及工程设计约束的情况下,对新能源一次调频应用场景下储能系统分布式接入场站的经济性展开了研究。分析了锂电池、飞轮和超级电容3类储能系统的技术特点和设计约束,在此基础上提出了3类储能用于一次调频的配置方法,结合配置方案进行了成本分析和技术经济性比较。

When participating in primary frequency regulation of electrical power systems,it is necessary for new energy to address the issue of energy sources.Configuring energy storage is an effective way.In practical application,the configuration of energy storage needs to consider the factors of physical characteristics,unit cost,and other constraints to comprehensively compare the technical economy.However,the energy storage system configuration schemes proposed in existing literature mainly analyze operational scenarios and fail to consider various engineering constraints and actual cost data of energy storage.Based on the actual cost data,this article fully considers the physical characteristics and engineering design constraints of the energy storage system to study the economy of distributed access to units within the station for assisting primary frequency regulation of new energy.The article analyzes the technical characteristics and design constraints of three types of energy storage systems,namely lithium batteries,flywheels,and supercapacitors.On this basis,three types of configuration methods for energy storage for primary frequency regulation are proposed,and cost analysis and technical economy comparison are conducted based on the configuration schemes.