风光储直流微电网的集中式虚拟同步控制方案  

Centralized Virtual Synchronous Control Scheme of Wind-photovoltaic-storage DC Microgrid

作　　者：刘津濂 童帆 王德友 LIU Jinlian;TONG Fan;WANG Deyou(Shanghai Investigation Design and Research Institute Co.,Ltd,Shanghai 200335,China)

机构地区：[1]上海勘测设计研究院有限公司,上海200335

出　　处：《电工技术》2025年第6期35-38,41,共5页Electric Engineering

基　　金：深远海大规模风电柔性直流送出关键技术研究(编号2021FD(8)-019)。

摘　　要：针对现有直流微电网的分布式虚拟同步控制效率与精度不足的问题,提出了一种施加于直流微电网公共直流母线所接逆变器的集中式虚拟同步控制方案,推导了系统功率平衡、相量关系、伏安特性、功率特性等数学模型,设计了前馈虚拟调速控制与前馈虚拟调压控制环节,生成了最优有功指令与无功指令修正量,结合系统转子运动及电压无功控制环节,建立了完整的集中式虚拟同步控制结构。最后,通过仿真验证了所提方案具有较高的控制效率与精度。Aiming at the lack of efficiency and accuracy of the existing virtual synchronization control based on DC microgrid,a centralized virtual synchronization control applied to inverter connected to common DC bus of DC microgrid is proposed.The mathematical models of power balance,phasor relationship,volt-ampere characteristic and power characteristic of the system are derived.The feedforward virtual speed control and feedforward virtual voltage regulation control are designed to generate optimal active and reactive power instruction corrections,respectively.A complete centralized virtual synchronous control structure is established by combining the rotor movement and voltage reactive power regulation control links of the system.The remarkable control efficiency and precision of the proposed control scheme are verified by numerical simulation.

关 键 词：直流微电网 公共直流母线 虚拟同步控制 虚拟调速控制 虚拟调压控制 

分 类 号：TM743[电气工程—电力系统及自动化]