集中式储能运行备用能力的评估及仿真  

Evaluation and simulation on the reserve capability of centralized energy storage

作　　者：雷长炎 王琦[1] 谢东亮 李威 赖业宁 张政[1,2] LEI Changyan;WANG Qi;XIE Dongliang;LI Wei;LAI Yening;ZHANG Zheng(School of NARI Electric and Automation,Nanjing Normal University,Nanjing 210023,China;NARI Group(State Grid Electric Power Research Institute)Co.,Ltd.,Nanjing 211106,China)

机构地区：[1]南京师范大学南瑞电气与自动化学院,江苏南京210023 [2]南瑞集团(国网电力科学研究院)有限公司,江苏南京211106

出　　处：《电力工程技术》2021年第3期15-21,共7页Electric Power Engineering Technology

基　　金：国家重点研发计划资助项目“应对风/光出力不确定风险的备用容量优化配置与紧急控制技术”(2018YFB0904205);国网江苏省电力有限公司科技项目(J2019055);江苏省研究生科研与实践创新计划项目(KYCX18_1228)资助。

摘　　要：储能是电网灵活性调度资源的重要成分,集中式储能(CES)容量除了应对移峰填谷的迫切需求外,还能在新能源高渗透下发挥巨大的电网备用能力。然而,在发(用)电计划和自身电量约束的双重影响下,这一能力呈现出明显的动态特征,给准确评估带来一定困难。因此,文中引入运行可行域的概念,通过描述CES的电量边界和功率边界来分析其备用能力,提出了在给定发(用)电计划下计算CES运行备用能力的新方法。基于某储能电站、某省级电网的仿真分析,验证了方法的有效性。结果表明,计及储能的备用能力可以有效减少系统的弃风光。进而,定量分析了储能电量/容量比、备用合约等对动态备用能力可能造成的影响,给出了进一步优化储能备用能力的建议。Energy storage is an important component of grid flexible dispatch resources.In addition to responding to the urgent needs of peak shifting and valley filling,the capacity of centralized energy storage(CES)can also exert huge grid backup capacity under the high penetration of new energy.However,under the dual influence of power generation(consumption)plan and its own power constraints,this capability exhibits obvious dynamic characteristics,which brings certain difficulties to accurate assessment.Therefore,a concept of operational viability domain is introduced.Its reserve capacity is analyzed by describing the electricity and power boundaries of CES,a new method is proposed to calculate the reserve capacity of CES operation under a given power generation(consumption)plan.Based on the simulation analysis of an energy storage power station and a provincial power grid,the effectiveness of the method is verified.The results show that taking into account the reserve capacity of energy storage can effectively reduce the abandonment of the system.Furthermore,the possible effects of energy storage electricity capacity ratio,reserve contracts,etc.on dynamic reserve capacity are quantitatively analyzed.The suggestions for further optimization of energy reserve capacity are given.

关 键 词：集中式储能 运行备用 动态特征 可行域 能力评估 

分 类 号：TM732[电气工程—电力系统及自动化]