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
  • [1] Takantape M M, Allahverdinejad B, Hamzeh M., Accurate oscillatory current-sharing in DC microgrids using distributed cooperative control method, IET Smart Grid, 3, 2, pp. 246-253, (2020)
  • [2] Yang Xinfa, Su Jian, Lu Zhipeng, Et al., Overview on micro-grid technology, Proceedings of the CSEE, 34, 1, pp. 57-70, (2014)
  • [3] (2016)
  • [4] Li Xialin, Guo Li, Wang Chengshan, Et al., Key technologies of DC microgrids: an overview, Proceedings of the CSEE, 36, 1, pp. 2-17, (2016)
  • [5] XieWeicai, Li Xiaofeng, Wang Shihao, Et al., Deviation-free control of frequent and voltage of AC/DC hybrid micro-grid, Proceedings of the CSU-EPSA, 31, 7, pp. 110-116, (2019)
  • [6] Liu Ziwen, Miao Shihong, Fan Zhihua, Et al., Accurate power allocation and zero steady-State error voltage control of the islanding DC microgirdbased on adaptive droop characteristics, Transactions of China Electrotechnical Society, 34, 4, pp. 795-806, (2019)
  • [7] Meng Jianhui, Zou Peigen, Wang Yi, Et al., Small-signal modeling and parameter analysis of the DC microgrid based on flexible virtual inertia control, Transactions of China Electrotechnical Society, 34, 12, pp. 2615-2626, (2019)
  • [8] Lan Zheng, Tu Chunming, Jiang Fei, The flexible interconnection strategy between DC microgrid and AC grid based on virtual electric machinery technology, Transactions of China Electrotechnical Society, 34, 8, pp. 1739-1749, (2019)
  • [9] Guo Wei, Zhao Hongshan, Coordinated control method of multiple hybrid energy storage system in DC microgrid based on event-triggered mechanism, Transactions of China Electrotechnical Society, 35, 5, pp. 1140-1151, (2020)
  • [10] Wang Chengshan, Li Wei, Wang Yifeng, Et al., DC bus voltage fluctuation classification and restraint methods review for DC microgrid, Proceedings of the CSEE, 37, 1, pp. 84-98, (2017)
123