A Novel Strategy for DC Distribution Start-up Based on MMC

doi:10.1109/iSPEC48194.2019.8975353

CORC > 兰州理工大学 > 兰州理工大学

	A Novel Strategy for DC Distribution Start-up Based on MMC
	Huo, Xianxu 2; Xie, Xingfeng 1,3; Wu, Zaijun 1; Dou, Xiaobo 1
	2019-11-01
会议日期	November 21, 2019 - November 23, 2019
会议地点	Beijing, China
关键词	Auxiliary equipment Electric circuit breakers Electric power supplies to apparatus Electric power system control Electric power transmission networks Power converters Auxiliary power supply Current-limiting resistors DC distribution network DC power distribution systems Modular multi-level converters Start-up strategy Submodules Uncontrolled charging
DOI	10.1109/iSPEC48194.2019.8975353
页码	952-956
英文摘要	In the DC power distribution system which needs to supply power for the passive network, because of the modular multilevel converter (MMC) connected to the passive network has no power supply, the MMC control mode can't directly be set to the constant voltage when to start MMC. Accordingly, the particular start-up control strategy must be adopted. This paper presents a novel start-up approach to the DC distribution network. Firstly, the process of the start-up is divided into an uncontrolled charging stage and a controllable charging stage. By placing a current limiting resistor in MMC AC-side, designing the AC-side and DC-side circuit breaker closing sequence of the converter station, and setting the reference voltage by the slope, the start-up of the DC distribution network can be achieved no large impact current. Secondly, by setting one end of the converter station as the master station and designing the control mode of connecting the passive network converter station, the local and the remote MMC sub-module capacitors can be charged at the same time, the start-up of the DC distribution network can be completed without the help of another auxiliary power supply or equipment. Finally, the mathematical model is established by Matlab/Simulink to verify the effectiveness of the proposed method. The studies we have performed showed that the designed start-up strategy is simple, easy to implement, reliable and economical. © 2019 IEEE.
会议录	iSPEC 2019 - 2019 IEEE Sustainable Power and Energy Conference: Grid Modernization for Energy Revolution, Proceedings
会议录出版者	Institute of Electrical and Electronics Engineers Inc., United States
语种	英语
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/118129]
专题	兰州理工大学
作者单位	1.Southeast University, School of Electrical Engineering, Nanjing, China; 2.State Grid Tianjin Electric Power Company, Electric Power Research Institute, Tianjin, China; 3.School of Electrical Engineering and Information Engineering, Lanzhou University of Technology, Lanzhou, China
推荐引用方式 GB/T 7714	Huo, Xianxu,Xie, Xingfeng,Wu, Zaijun,et al. A Novel Strategy for DC Distribution Start-up Based on MMC[C]. 见:. Beijing, China. November 21, 2019 - November 23, 2019.