中国电力2025，Vol.58Issue(6)：145-155,11.DOI:10.11930/j.issn.1004-9649.202405139
基于可调虚拟阻抗的"柔-储-充"装置电池优化运行策略
Battery Optimization Operation Strategy for the"SOP-Storage-Charger"Devices Based on Adjustable Virtual Impedance
摘要
Abstract
The soft open points-storage-charger(SSC)device integrates flexible interconnection,energy storage,and charging functions,which can mitigate energy fluctuations in the distribution network.However,during its operation,the frequent utilization of energy storage resources leads to high-power charging and discharging of batteries,thereby affecting their lifespan.To address this issue,a battery optimization operation strategy for the SSC device based on adjustable virtual impedance is proposed.Firstly,the functions of flexible interconnection,energy storage,and charging are all equivalently modeled as virtual impedances.The various energy pathways during the energy fluctuation process in the distribution network are analyzed.By adjusting the virtual impedance,the fluctuating energy can be effectively managed.Based on this,considering the operational characteristics of the SSC device,control methods for the adjustable virtual impedance of each part are proposed,and the physical significance and design principles of key parameters are analyzed.Finally,an experimental platform is built based on a hardware-in-the-loop(HIL)system to verify the theoretical results.The research demonstrates that the proposed method can mitigate voltage fluctuations in the distribution network while reducing the magnitude of charging and discharging currents in the energy storage system,thereby improving battery lifespan.关键词
新能源配电网/"柔-储-充"装置/储能/虚拟阻抗/电池寿命/充放电Key words
renewable energy distribution network/SOP-storage-charger device/energy storage/virtual impedance/battery lifespan/charging and discharging引用本文复制引用
秦昆,渠志江,韩建伟,许涛,高峰,迟晓莉..基于可调虚拟阻抗的"柔-储-充"装置电池优化运行策略[J].中国电力,2025,58(6):145-155,11.基金项目
国网山东省电力公司科技项目(高比例光伏配电网"柔-储-充"一体化装置及运行控制技术研究,520606240003) （高比例光伏配电网"柔-储-充"一体化装置及运行控制技术研究,520606240003）
国家自然科学基金资助项目(基于PWM参数协同调控的并网变流器集群优化运行方法及技术,52207213). This work is supported by Science and Technology Project of State Grid Shandong Electric Power Company(Research on Integrated Device and Operation Control Technology of"SOP-Storage-Charge"for High Proportion Photovoltaic Distribution Network,No.520606240004),National Natural Science Foundation of China(Optimized Operation of Multiple Grid-Tied Converters Based on Cordinated Control of Pulse Widthc Modulation,No.52207213). （基于PWM参数协同调控的并网变流器集群优化运行方法及技术,52207213）
