基于连续时间尺度的储能运行提升光储型园区需量防守能力  

Energy Storage Operation Based on Continuous Time Scale to Improve the Demand Defense Capacity of Photovoltaic and Energy Storage Integrated Park

作　　者：刘峰伟 陈佳佳[1] 魏延康 徐丙垠[1] 赵艳雷[1] LIU Fengwei;CHEN Jiajia;WEI Yankang;XU Bingyin;ZHAO Yanei(School of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255000,China)

机构地区：[1]山东理工大学电气与电子工程学院,淄博255000

出　　处：《高电压技术》2024年第12期5621-5629,I0017,I0018,共11页High Voltage Engineering

基　　金：国家自然科学基金(52377110)。

摘　　要：工商业园区配置光伏和储能可大幅减少用电成本,光储电站必然会成为新型电力系统用户侧重要组成部分。但特殊场景下负荷激增或光伏发电骤减,极易引发园区需量防守失败,影响光储电站收益最大化。在此背景下,该文提出一种连续时间尺度的储能运行策略,用以提升特殊场景下光储型园区需量防守能力。首先,推导出区间归一化Bernstein多项式,以获取连续时间尺度下储能能量状态和充放电功率。然后,基于区间归一化Bernstein多项式,构建了连续时间尺度下储能运行模型。最后,综合考虑电度电费、需量电费及系统约束,提出了基于区间归一化Bernstein多项式的光储型园区需量防守策略,并以淄博某光储型园区的数据进行仿真分析,结果表明所提方法明显优于传统基于离散运行的储能优化策略,有利于提升光储型园区经济效益。The configuration of photovoltaic and energy storage in a park can greatly reduce the cost of electricity con-sumption,and the optical storage park is bound to become an important part of the new power system.However,the surge of load or the sudden decrease of photovoltaic power generation in special scenarios can easily lead to the failure of park demand defense and affect the profit maximization of optical storage power stations.Under this background,this paper proposes a continuous time-scale energy storage operation strategy to improve the defense capability of optical storage park in special scenes.Firstly,the Bernstein polynomial based on interval normalization is derived to obtain the energy storage state and charge-discharge power at continuous time scale.This method extends the application of Bernstein pol-ynomials in continuous optimal scheduling in arbitrary closed intervals.Then,based on the interval normalized Bernstein polynomials,a continuous time scale energy storage operation model is constructed.Finally,after electricity,electricity demand and system constraints being taken into consideration,a defense strategy of optical storage park demand based on Bernstein polynomial based on interval normalization is proposed,and the simulation analysis is carried out with the data of an optical storage park in Zibo city of China.The results show that the proposed method is obviously better than the traditional energy storage defense strategy based on discrete operation.

关 键 词：需量防守 BERNSTEIN多项式 两部制电价 光储型园区 连续运行 

分 类 号：TM615[电气工程—电力系统及自动化]