DAB-based Power Flow Analysis and Calculation for Multi-voltage Grades DC Distribution Network

被引：0
|
作者：
Liu P. [1 ]
Jia Y. [1 ]
Han X. [1 ]
机构：
[1] Shanxi Key Laboratory of Power System Operation and Control, Taiyuan University of Technology, Taiyuan
来源：
Dianwang Jishu/Power System Technology | 2021年 / 45卷 / 02期
关键词：
Binary search; Branch equivalent model; Dual active bridge converter; Multi-voltage grades DC distribution network; Power flow calculation;
D O I：
10.13335/j.1000-3673.pst.2020.0218a
中图分类号：
学科分类号：
摘要：
Dual Active Bridge (DAB) converters have been widely used to meet the needs of many applications in DC power supply systems. An accurate and intuitive DAB converter equivalent circuit model is of great significance for multi-voltage grades DC distribution power flow calculation and analysis. In order to achieve the accuracy and intuitiveness of the power flow calculation of the multi-voltage grades DC distribution network with DAB converter, a π-type equivalent circuit of DAB converter branch under single-shift compared with modulation mode is established considering the influence of component parasitic parameters. The model analyzes the power transmission path and the basic principle of power flow regulation in DAB power flow calculation of the DC distribution network. Considering the characteristics of the typical DC load and different control methods, an improved Newton-Raphson power flow calculation method based on binary search method is proposed. Finally, the correctness of the power transmission path theory of the proposed model is verified by a 6-node DC distribution network. Based on this model, the validity and correctness of power flow calculation in the multi-grade voltage DC distribution network with DAB converter is verified by a modified IEEE 14-node DC distribution network. © 2021, Power System Technology Press. All right reserved.
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页码：741 / 750
页数：9
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