Research on transient adaptive virtual inertia control strategy of DC microgrid and its parameter feasibility region

被引：0
|
作者：
Zhang X. [1 ]
Chen L. [1 ]
Fu Y. [1 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2023年 / 43卷 / 11期
基金：
中国国家自然科学基金;
关键词：
DC microgrid; parametric analysis; pole assignment; transient electric quantity; virtual inertia;
D O I：
10.16081/j.epae.202305001
中图分类号：
学科分类号：
摘要：
The additional virtual capacitor control can excavate the hidden inertia of DC microgrid，so as to alleviate the sensitive problem of DC bus voltage to power fluctuation under the penetration of new energy，but it can not meet the flexible inertia requirements of the system in the process of dynamic regulation. In order to provide flexible inertial support capability for DC microgrid，by coupling voltage parameters and inertia parameters in source side converter control to change the process of system power accumulation，a transient adaptive virtual inertia control strategy is proposed which can respond to the changes of microgrid operating conditions in real time and input variable virtual capacitance. With the help of the system small signal model and root locus analysis，the influence of inertia parameter change on the system stability is revealed. On this basis，the control theory is used to assign poles to provide effective constraints for parame⁃ ter selection and optimize the design of control parameters. Finally，a five-terminal DC microgrid simulation system is built to verify the flexible transient adaptive capability of dynamic virtual capacitance provided by transient adaptive virtual inertia control. © 2023 Electric Power Automation Equipment Press. All rights reserved.
引用
收藏
页码：141 / 149
页数：8
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  • [1] YAO Liangzhong, WU Jing, WANG Zhibing, Et al., Pattern analysis of future HVDC grid development［J］, Proceedings of the CSEE, 34, 34, pp. 6007-6020, (2014)
  • [2] ZHI Na, MING Xu, ZHANG Linjie, Et al., Virtual DC machine control strategy for bidirectional DC／DC converter simulating speed regulation characteristics of DC machine［J］, Elec⁃ tric Power Automation Equipment, 42, 12, pp. 115-121, (2022)
  • [3] ZHU Xiaorong, CAI Jie, WANG Yi, Et al., Virtual inertia con⁃ trol of wind-battery-based DC micro-grid［J］, Proceedings of the CSEE, 36, 1, pp. 49-58, (2016)
  • [4] LIU Yingpei, ZHOU Suwen, LIANG Haiping, Et al., Flexible virtual inertial control strategy of photovoltaic-energy storage DC distribution network［J］, Electric Power Automation Equip⁃ ment, 41, 5, pp. 107-113, (2021)
  • [5] Haihua ZHOU, Et al., Composite energy storage system involving battery and ultracapacitor with dynamic energy management in microgrid applications［J］, IEEE Transactions on Power Electronics, 26, 3, pp. 923-930, (2011)
  • [6] ZHU Xiaorong, HAN Danhui, Stability analysis of DC microgrid based on virtual inertia control and its improved method ［J］, Electric Power Automation Equipment, 39, 12, pp. 121-127, (2019)
  • [7] FU Yuan, ZHEN Dongfu, ZHANG Xiangyu, Et al., Transient electric quantity inertial control strategy for wind turbines in DC microgrid［J］, High Voltage Engineering, 48, 1, pp. 156-165, (2022)
  • [8] YU Ming, WANG Yi, LI Yonggang, Virtual inertia control of hybrid energy storage in DC microgrid based on predictive method［J］, Power System Technology, 41, 5, pp. 1526-1532, (2017)
  • [9] Wenhua WU, Yandong CHEN, An LUO, Et al., A virtual inertia control strategy for DC microgrids analogized with virtual synchronous machines［J］, IEEE Transactions on Industrial Electronics, 64, 7, pp. 6005-6016, (2017)
  • [10] ZHANG Hui, LIANG Yuxin, SUN Kai, Et al., Improved virtual capacitor control strategy of multi-port isolated DC-DC con⁃ verter in DC microgrid［J］, Transactions of China Electrotech⁃ nical Society, 36, 2, pp. 292-304, (2021)
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