Time/frequency domain modelling for grid-connected MMC sub-synchronous/super-synchronous oscillation in PV MVDC power collection and integration system

被引：6
|
作者：
Wang, Jianhua [1 ]
Gao, Shang [1 ]
Ji, Zhendong [2 ]
Sun, Yichao [3 ]
Hong, Lucheng [1 ]
Luo, Fangfang [1 ]
Gu, Wei [1 ]
机构：
[1] Southeast Univ, Sch Elect Engn, Jiangsu Prov Key Lab Smart Grid Technol & Equipme, Nanjing, Jiangsu, Peoples R China
[2] Nanjing Univ Sci & Technol, Sch Automat, Dept Elect Engn, Nanjing, Jiangsu, Peoples R China
[3] Nanjing Normal Univ, Sch Elect & Automat Engn, Nanjing, Jiangsu, Peoples R China
来源：
IET RENEWABLE POWER GENERATION | 2019年 / 13卷 / 01期
基金：
中国国家自然科学基金;
关键词：
HVDC power convertors; invertors; power grids; power capacitors; time-frequency analysis; power system stability; HVDC power transmission; dynamic voltage-balancing process; sub-module capacitors; frequency-domain model; grid-connected MMC inverter; comprehensive PWM-based modular multilevel converter model; grid-connected MMC sub-synchronous-super-synchronous oscillation; time-frequency domain modelling; PV MVDC power collection; PV MVDC power integration system; output impedance; positive-sequence coordinates; negative-sequence coordinates; impedance shaping method; modular multilevel inverter; MODULAR MULTILEVEL CONVERTERS;
D O I：
10.1049/iet-rpg.2018.5041
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study proposes a comprehensive PWM-based modular multilevel converter (MMC) model in both time and frequency domain at the same time. The time-domain model not only accelerates simulation speed but also describe the characteristics of sub-modules, such as the dynamic voltage-balancing process of sub-module capacitors. The frequency-domain model provides the output impedance of the grid-connected MMC inverter in positive-sequence and negative-sequence coordinates. The proposed model, validated by results of different scenarios listed, at last, predicts and eliminates sub-synchronous/super-synchronous oscillations with impedance shaping method.
引用
收藏
页码：57 / 66
页数：10
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