电力工程技术2025，Vol.44Issue(6)：155-164,182,11.DOI:10.12158/j.2096-3203.2025.06.015
考虑多因素的直流微网虚拟电容协同分配策略
Virtual capacitance cooperative allocation control strategy considering multiple factors in DC microgrid
摘要
Abstract
The virtual capacitor control strategy is applied to the converters at each port of DC microgrid to simulate the charge-discharge characteristics of capacitors,which provides an effective solution to solve the inertia problem of the system and improve the voltage quality.Aiming at the cooperative allocation problem of virtual capacitance control in parallel operation of multiple energy storage units,a cooperative allocation strategy of multiple energy storage units based on virtual capacitance control to give full play to the inertial support capability of each energy storage unit is proposed in this paper.The total value of the adjustable virtual capacitance is obtained according to the change rate of DC voltage and the state of charge.The entropy method and scoring matrix are used to comprehensively evaluate the indicators such as the state of charge of the battery and the adjustable capacity of the energy storage converter.The allocation coefficient is obtained according to the final evaluation score,so as to distribute the total virtual capacitance cooperatively.Finally,a hardware-in-the-loop simulation test platform is built to verify the proposed strategy.The results show that the energy storage units allocate virtual capacitors reasonably according to the inertia capacity,which avoids the energy storage converter from prematurely exiting due to excessive output power,and enhances the inertia level and safe and stable operation capability of the system.关键词
直流微网/虚拟电容/协同控制/多指标综合评价/熵值法/评价矩阵Key words
DC microgrid/virtual capacitance/cooperative control/multi-index comprehensive evaluation/entropy method/evaluation matrix分类
信息技术与安全科学引用本文复制引用
孟建辉,周子欣,王慧,顾立康..考虑多因素的直流微网虚拟电容协同分配策略[J].电力工程技术,2025,44(6):155-164,182,11.基金项目
国家自然科学基金资助项目(52077079) （52077079）
