Residual Dynamic Decentralized Compensation Control Strategy Considering Disturbance Suppression in DC Microgrid

被引：0
|
作者：
Hu C. [1 ]
Wang H. [1 ]
Luo S. [1 ]
Zhou J. [1 ]
Ma R. [2 ]
机构：
[1] College of Electrical and Control Engineering, North China University of Technology, Beijing
[2] State Grid Hebei Electric Power Supply Co. Ltd, Shijiazhuang
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2021年 / 36卷 / 21期
关键词：
DC droop; Plug and play; Residual; RTDS; State space; Voltage sag compensation;
D O I：
10.19595/j.cnki.1000-6753.tces.201298
中图分类号：
学科分类号：
摘要：
Aiming at the power quality and circulation problems of DC microgrid, a residual dynamic decentralized compensation control strategy which takes into account the disturbance suppression of DC microgrid is proposed. Based on the DC droop control, this strategy first analyzes the disturbance problem of the DC microgrid and the circulation problem in the parallel state. Secondly, a state space model of Buck-type and Boost-type multi-DC-DC converters in parallel is established, and the dynamic decentralized compensation structure of the converter based on residual is derived. The structure is directly compensated at the output of the voltage loop, and the compensation controller Q*(s) is calculated by the disturbance cancellation. The small signal stability analysis method is used to prove the stability of the compensation structure in this paper. Finally, build a digital physics experiment platform based on RTDS, and take the same and different types of converters in parallel for experimental verification. This structure can speed up the dynamic response speed of the DC bus voltage when the distributed power supply and public load are switched on and off, and effectively suppress the influence of circulating current and The double power frequency disturbance of the DC bus voltage caused by the imbalance of the AC side maintains the consistency of the voltage, ensures the stability of the bus voltage, and helps to realize the "plug and play" technology of distributed power. © 2021, Electrical Technology Press Co. Ltd. All right reserved.
引用
收藏
页码：4493 / 4507and4543
相关论文
共 23 条
  • [11] Wang Cheng, DuanJiajun, Fan Bo, Et al., Decentralized high-Performance control of DC microgrids, IEEE Transactions on Smart Grid, 10, 3, pp. 3355-3363, (2019)
  • [12] Samanta S, Mishra J P, Roy B K., Virtual DC machine: an inertia emulation and control technique for a bidirectional DC-DC converter in a DC microgrid, IET Electric Power Applications, 12, 6, pp. 874-884, (2018)
  • [13] Li Peng, Li Xinming, Chen Anwei, Et al., Optimal coordinated time-State control of DC/DC bidirectional converter in DC microgrid, Power System Technology, 42, 1, pp. 41-47, (2018)
  • [14] Zhu Xiaorong, Meng Fanqi, Xie Zhiyun, Control strategy of DC-DC converter in DC microgrid based on virtual synchronous generator, Automation of Electric Power Systems, 43, 21, pp. 132-144, (2019)
  • [15] Zhu Xiaorong, Hou Shunda, Li Zheng, Voltage dynamic response optimization of DC microgrid based on model predictive control, Power System Technology, 44, 6, pp. 2187-2195, (2020)
  • [16] Guo Zhen, Le Quanming, Guo Li, Et al., Control method of DC bus voltage ripple mitigation in hybrid AC/DC microgrids, Power System Technology, 41, 9, pp. 2896-2904, (2017)
  • [17] Li Xialin, Guo Li, Zhang Shaohui, Et al., Observer-based DC voltage droop and current feed-forward control of a DC microgrid, IEEE Transactions on Smart Grid, 9, 5, pp. 5207-5216, (2018)
  • [18] Tah A, Das D., An enhanced droop control method for accurate load sharing and voltage improvement of isolated and interconnected DC microgrids, IEEE Transactions on Sustainable Energy, 7, 3, pp. 1194-1204, (2016)
  • [19] Meng Lexuan, Dragicevic T, Vasquez J C, Et al., Tertiary and secondary control levels for efficiency optimization and system damping in droop controlled DC-DC converters, IEEE Transactions on Smart Grid, 6, 6, pp. 2615-2626, (2015)
  • [20] Luo Hao, Yang Xu, Krueger M, Et al., A plug-and-play monitoring and control architecture for disturbance compensation in rolling mills, IEEE/ASME Transactions on Mechatronics, 23, 1, pp. 200-210, (2018)
123