Unified Reduced-Order Model for Low-Voltage DC Distribution Systems

被引：1
|
作者：
Liu, Xiao [1 ]
Dong, Chunfa [1 ]
Qu, Hanbing [1 ]
Yu, Guangyuan [1 ]
Su, Shancheng [1 ]
机构：
[1] State Grid Jinan Power Supply Co, Jinan, Peoples R China
来源：
2023 5TH ASIA ENERGY AND ELECTRICAL ENGINEERING SYMPOSIUM, AEEES | 2023年
关键词：
low-voltage DC distribution system; high-frequency oscillation; unified reduced-order model; wide-frequency dynamics; control parameters; STABILITY; DROOP;
D O I：
10.1109/AEEES56888.2023.10114245
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The stability analysis of low-voltage DC distribution systems will become more difficult due to their wide-frequency dynamics and high order characteristics. For this reason, a unified reduced-order model for low-voltage DC systems is developed in this paper. Due to the physical differences between circuit models and control loops, the reduced-order modeling process will be carried out in two steps. First, the circuit reduced-order model is developed by considering the interaction between the constant power load, the DC line and the filter circuit of the voltage-source converter (VSC) in the system. Based on this circuit reduced-order model, a unified reduced-order model is developed by further considering the interactions between the control loops in different VSCs. Finally, the switching model of the low-voltage DC distribution system is built on PLECS software. The time-domain simulation results verify the validity of the unified reduced-order model.
引用
收藏
页码：838 / 843
页数：6
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