飞轮与电池混合储能的直流微网母线电压波动抑制策略  

Suppression Strategy for DC Microgrid Bus Voltage Fluctuation of Hybrid Flywheel and Battery Energy Storage

作　　者：张继红[1] 刘云飞 吴振奎[1] 鲍镘 付文豪 ZHANG Ji-hong;LIU Yun-fei;WU Zhen-kui;BAO Man;FU Wen-hao(College qf Information Engineering,Inner Mongolia University of Science and Technology)

机构地区：[1]内蒙古科技大学信息工程学院

出　　处：《化工自动化及仪表》2022年第6期699-706,共8页Control and Instruments in Chemical Industry

基　　金：内蒙古自治区自然科学基金项目(2021MS05039);内蒙古自治区科技重大专项(2020ZD0017);内蒙古自治区关键技术攻关项目(2019GG319)。

摘　　要：针对直流微网母线电压波动的关键技术问题,研究基于飞轮储能、磷酸铁锂电池混合储能的数学模型,考虑储能的功率密度、能量密度以及负荷突变等复杂情形,围绕电压波动机理与荷电状态约束设计了改进下垂控制策略,分别从单元级和系统级两方面开展母线电压平抑工作,为母线电压稳定问题的解决提供了基本思路。最后,采用大型数字化仿真软件PSCAD/EMTDC和实验室平台进行了实验测试,结果表明设计方案合理、可行,能够快速跟踪母线电压并有较好的抑制效果。Considering key technical matters of bus voltage fluctuation in DC microgrid,a mathematical model based on flywheel energy storage and LiFePO4 hybrid energy storage was investigated.Through considering complex situations such as the power density,energy density and the load abrupt change of energy storage,having an improved droop control strategy designed based on voltage fluctuation mechanism and SOC constraint was carried out,including having bus voltage fluctuation suppressed at both unit level and system level to provide ideas for the solution to bus voltage stability.Both test based on the digital large-scale simulation software PSCAD/EMTDC and that on the laboratory platform show that,the design scheme is reasonable and feasible and it can quickly track the bus voltage along with good suppression effect.

关 键 词：改进控制策略 直流微网 电压波动 混合储能 荷电状态约束 

分 类 号：TM76[电气工程—电力系统及自动化]