Concept and Definition of Dynamic Symmetrical Components With Time-Varying Amplitude and Frequency

被引：6
|
作者：
Li, Yingbiao [1 ,2 ]
Hu, Jiabing [1 ,2 ]
Wen, Weizhong [1 ,2 ]
Wang, Qinghua [3 ]
Ma, Shicong [4 ]
Guo, Jianbo
机构：
[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China
[3] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewable, Beijing 102206, Peoples R China
[4] China Elect Power Res Inst, Beijing 100192, Peoples R China
来源：
IEEE TRANSACTIONS ON ENERGY CONVERSION | 2022年 / 37卷 / 04期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Voltage; Time-frequency analysis; Circuit faults; Mathematical models; Power system dynamics; Analytical models; Integrated circuit modeling; Concept and definition; dynamic symmetrical components; phasor models with time-varying amplitude and frequency; symmetrical component method;
D O I：
10.1109/TEC.2022.3188864
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This paper investigates the dynamic symmetrical component method of internal voltage vector with time-varying amplitude and frequency. With the large-scale integration of power electronic devices into the power grid, when there is an asymmetrical fault in the AC network, the voltages and currents present the characteristics of amplitude and frequency time-varying modulation. Hence, the traditional asymmetrical fault analysis method and concept based on phasor models with constant amplitude and frequency are not adaptive enough. In order to supplement the traditional symmetrical component method and concept, the phasor models and vector models with time-varying amplitude and frequency are established. Then, the asymmetrical three-phase phasors with time-varying amplitude and frequency are decomposed into three groups of symmetrical phasors with time-varying amplitude and frequency. Based on the mathematical and physical characteristics of symmetrical components, the applicable concept and definition are reestablished. Lastly, time-domain simulations corroborate the theoretical analysis.
引用
收藏
页码：2737 / 2748
页数：12
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