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Comments on Power Quality Enhancement Research for Power Grid by Energy Storage System LI Jianlin',YUAN Xiaodong:.YU Zhenggang'.GE Le' (1.China Electric Power Research Institute,Beijing 100192,China; 2.State Grid Jiangsu Electric Power Co.Ltd.Research Institute,Nanjing 211103.China; 3.Lianyungang Power Supply Company.State Grid Jiangsu Electric Power Co.Ltd.,Lianyungang 222004,China: 4.School of Electrical Engineering,Nanjing Institute of Technology,Nanjing 211167.China) Abstract:In recent years,the widespread application of power electronic devices and the high-permeability access of renewable energy have increasingly affected the power quality of power grid.As an important energy buffering link,energy storage system brings new ideas to the improvement of power quality of power grid.Firstly,the typical application scenarios of different types of energy storage are summarized.According to the application characteristics of power generation and energy storage at both power grid side and user side,the feasiblety is analyzed when they are simultaneously applied to improve the power quality of power grid.Secondly.the research status and development trend of energy storage are reviewed when it is applied to the steady and dynamic state power quality control of power grid.Furthermore.a novel series-parallel hybrid energy storage system is proposed,which can effectively solve the comprehensive power quality problems while realizing energy interaction with power grid.Finally,from the experience of demonstration application,the key research issues of future energy storage to improve grid power quality of power grid are prospected. This work is supported by National Natural Science Foundation of China (No.51707089)and State Grid Corporation of China (No.5210EF17001C). Key words:power quality:energy storage:series parallel grid-connected structure;demonstration application 24统一电能 质 量 调 节 器 控 制 策 略 [J].电 力 自 动 化 设 备,2018, 38(3):177-183. HUANGXiaoming,FANZhihua,LIUZiwen,etal.Control strategy of UPQC based on active and reactive power coordination distribution [J]. Electric Power Automation Equipment,2018,38(3):177-183. [57]冯兴田,张丽霞,康忠健.基于超级电容器储能的 UPQC 工作 条件及控制策略[J].电力自动化设备,2014,34(4):84-89. FENGXingtian,ZHANG Lixia,KANGZhongjian.Working conditions and control strategy of UPQC based on supercapacitorenergystorage[J].ElectricPowerAutomation Equipment,2014,34(4):84-89. [58]段耀强,荆平,陈国富,等.统一电能质量调节器串联侧滤波器 设计与有源阻尼控制策略[J].电网技术,2015,39(5):1405- 1411. DUANYaoqiang,JINGPing,CHENGuofu,etal.Designof series-sidefilterforunifiedpowerqualityconditionerandactive dampingcontrolstrategy[J].Power System Technology, 2015,39(5):1405-1411. [59]蒋玮,陈武,胡仁杰.基于超级电容器储能的微网统一电能质量 调节器[J].电力自动化设备,2014,34(1):85-90. JIANG Wei,CHEN Wu,HU Renjie.Unitedpowerquality conditionerbasedonsupercapacitorformicrogird[J].Electric PowerAutomationEquipment,2014,34(1):85-90. [60]王浩,刘进军,梅桂华.一种串联侧三相解耦型统一电能质量控 制器[J].电工技术学报,2016,31(2):215-220. WANG Hao,LIU Jinjun, MEI Guihua.A unified power qualityconditionerwiththree-phasedecouplinginseriessection [J].TransactionsofChina ElectrotechnicalSociety,2016, 31(2):215-220. [61]龙云波,徐云飞,肖湘宁,等.采用模块化多电平换流器的统一 电能质 量 控 制 器 预 充 电 控 制 [J].电 力 系 统 自 动 化,2015, 39(7):182-187. LONG Yunbo,XU Yunfei,XIAO Xiangning,etal.Pre￾chargingcontrolforunifiedpowerqualityconditionerbasedon modular multilevelconverter[J]. Automation of Electric PowerSystems,2015,39(7):182-187. [62]KHORASANIPG,MAHMOODJ,SEYEDGS.Smartgrid realizationwithintroducingunifiedpowerqualityconditioner integrated with DC microgrid[J].Electric PowerSystems Research,2017,151(10):68-85. [63]CAMPANHOLLBG ,DASILVASAO,OLIVEIRAAA, etal.Powerflowandstabilityanalysesofa multifunctional distributedgenerationsystemintegratingaphotovoltaicsystem with unified power quality conditioner [J/OL ]. IEEE Transactions on Power Electronics, 2018 [2018-12-22]. http://dx.doi.org/10.1109/TPEL.2018.2873503. 李建林(1976—),男,博士,教授级高级工程师,主要研 究方向:大规模储能应用技术、新能源发电并网技术。 袁晓冬(1979—),男,硕士,研究员级高级工程师,主要 研究方向:新能源与智能电网。 郁正纲(1972—),男,硕士,高级工程师,主要研究方向: 电力系统生产运行管理。 葛 乐(1982—),男,通信作者,博士,副教授,主要研究 方向:新能源与主动配电网。E-mail:supertiger_bear@126. com (编辑 顾晓荣) CommentsonPowerQualityEnhancementResearchforPowerGridbyEnergyStorageSystem LIJianlin 1 YUAN Xiaodong 2 YUZhenggang 3 GELe 1 4 1 ChinaElectricPowerResearchInstitute Beijing100192 China 2 StateGridJiangsuElectricPowerCo Ltd ResearchInstitute Nanjing211103 China 3 LianyungangPowerSupplyCompany StateGridJiangsuElectricPowerCo Ltd Lianyungang222004 China 4 SchoolofElectricalEngineering NanjingInstituteofTechnology Nanjing211167 China Abstract Inrecentyears thewidespreadapplicationofpowerelectronicdevicesandthehigh-permeabilityaccessofrenewable energyhaveincreasinglyaffectedthepowerqualityofpowergrid Asanimportantenergybufferinglink energystorage systembringsnewideastotheimprovementofpowerqualityofpowergrid Firstly thetypicalapplicationscenariosof differenttypesofenergystoragearesummarized Accordingtotheapplicationcharacteristicsofpowergenerationandenergy storageatbothpowergridsideanduserside thefeasibletyisanalyzedwhentheyaresimultaneouslyappliedtoimprovethe powerqualityofpowergrid Secondly theresearchstatusanddevelopmenttrendofenergystoragearereviewedwhenitis appliedtothesteadyanddynamicstatepowerqualitycontrolofpowergrid Furthermore anovelseries-parallelhybridenergy storagesystemisproposed whichcaneffectivelysolvethecomprehensivepowerqualityproblems whilerealizingenergy interactionwithpowergrid Finally fromtheexperienceofdemonstrationapplication thekeyresearchissuesoffutureenergy storagetoimprovegridpowerqualityofpowergridareprospected ThisworkissupportedbyNationalNaturalScienceFoundationofChina No 51707089 andStateGridCorporationof China No 5210EF17001C Keywords powerquality energystorage seriesparallelgrid-connectedstructure demonstrationapplication 24 2019,43(8) ·面向电网需求的储能系统规划、运行与调控关键技术·