混合储能型微电网协调控制策略  

Coordinated Control Strategy of Hybrid Energy Storage Microgrid

作　　者：鲍镘 张继红[1] 付文豪 吴振奎[1] 魏毅立[1] BAO Man;ZHANG Jihong;FU Wenhao;WU Zhenkui;WEI Yili(Inner Mongolia Key Lab of Solar Thermal and Wind Power,Inner Mongolia University of Science and Technology,Baotou Inner Mongolia 014010,China)

机构地区：[1]内蒙古自治区光热与风能发电重点实验室,内蒙古科技大学信息工程学院,内蒙古包头014010

出　　处：《湖北电力》2022年第6期79-86,共8页Hubei Electric Power

基　　金：内蒙古自治区重点研发与成果转化项(项目编号:2022YFHH0019);内蒙古自治区自然科学基金项目(项目编号:2021MS05039);内蒙古自治区科技重大专项(项目编号:2020ZD0017)。

摘　　要：大力发展和高效利用可再生能源是缓解气候危机,实现双碳目标的重要举措。为解决风电、光伏等间歇性电源即插即用、负荷随机投切等复杂情况的微电网母线电压不稳、频率波动等问题,提出了一种基于混合储能动态平衡负荷功率进行母线电压及频率的控制策略。将功率特性的飞轮储能和能量特性的电池作为储能单元,结合了各自储能荷电状态约束条件,设计了虚拟复阻抗的双闭环结构,采用鲁棒下垂控制手段,修正了飞轮储能的放电速度,实现了储能系统对负荷变化的快速跟踪,达到了稳定母线电压和频率的目的。采用大型数字化仿真软件PSCAD/EMTDC进行仿真实验,结果表明,所提控制策略是合理有效的,具有推广应用前景。Vigorously developing and efficiently utilizing renewable energy is an important measure to mitigate climate crisis and achieve the goal of carbon peak and carbon neutrality.In order to solve the problems of unstable busbar voltage and frequency fluctuation of microgrid in complex situations such as Plug-and-Play and random load switching of wind power,photovoltaics and other intermittent power supply,this paper proposes a control strategy based on hybrid energy storage dynamically balancing load power for bus voltage and frequency control.Taking flywheel energy storage with power characteristics and battery with energy characteristics as energy storage units,and combining with the state constraints of each energy storage charge,the paper designs a double closed-loop structure with virtual complex impedance,and then uses the Robust Droop control method to modify the discharge speed of the flywheel energy storage,and realize fast track of the energy storage system's load change,thus achieving the purpose of stabilizing the voltage and frequency of the bus.Finally,the paper uses large-scale digital simulation software PSCAD/EMTDC to conduct simulation experiments.The results show that the proposed control strategy is reasonable and effective,and has the prospect of popularization and application.

关 键 词：微电网 碳达峰 碳中和 混合储能 协调控制策略 电压控制 频率控制 

分 类 号：TM73[电气工程—电力系统及自动化]