Interaction Assessment and Stability Analysis of the MMC-Based VSC-HVDC Link

被引：19
|
作者：
Dadjo Tavakoli, Saman [1 ]
Prieto-Araujo, Eduardo [1 ]
Sanchez-Sanchez, Enric [1 ]
Gomis-Bellmunt, Oriol [1 ]
机构：
[1] Univ Politecn Cataluna, Dept Elect Engn, CITCEA UPC, Ave Diagonal 647, Barcelona 08028, Spain
来源：
ENERGIES | 2020年 / 13卷 / 08期
基金：
欧盟地平线“2020”;
关键词：
HVDC; MMC; mutual interactions; small-signal analysis; state-space model;
D O I：
10.3390/en13082075
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 behavior of a modular multi-level converter (MMC)-based HVDC link. An overall state-space model is developed to identify the system critical modes, considering the dynamics of the master MMC and slave MMC, their control systems, and the HVDC cable. Complementary to the state-space model, an impedance-based model is also derived to obtain the minimum phase margin (PM) of the system. In addition, a relative gain array (RGA) analysis is conducted to quantify the level of interactions among the control systems of master and slave MMCs and their impacts on stability. Finally, with the help of the results obtained from the system analysis (eigenvalue, phase margin, sensitivity, and RGA), the system dynamic performance is improved.
引用
收藏
页数：19
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