Impedance Analysis of Virtual Synchronous Generator-Based Vector Controlled Converters for Weak AC Grid Integration

被引：88

作者：

Asrari, Arash ^{[1
]}

Mustafa, Mehran ^{[1
]}

Ansari, Meisam ^{[1
]}

Khazaei, Javad ^{[2
]}

机构：

[1] Southern Illinois Univ, Dept Elect & Comp Engn, Carbondale, IL 62901 USA

[2] Penn State Harrisburg, Sch Engn & Technol, Middletown, PA 17057 USA

来源：

IEEE TRANSACTIONS ON SUSTAINABLE ENERGY | 2019年 / 10卷 / 03期

关键词：

High voltage direct current (HVDC); short circuit ratio (SCR); virtual synchronous generator (VSG); voltage source converter (VSC); HVDC; FREQUENCY;

D O I：

10.1109/TSTE.2019.2892670

中图分类号：

X [环境科学、安全科学];

学科分类号：

083001 [环境科学];

摘要：

Voltage source converter (VSC) based high-voltage direct current (HVDC) system is an emerging technology in high-power applications. Previous research has shown that VSCs, with commonly used vector current control (VCC) technique, cannot transmit more than 0.4 p.u. of active power when connected to a very weak ac grid. This paper presents a virtual synchronous generator (VSG) control strategy integrated with VCC to allow stable power transfer for very weak ac grid integration. Impedance analysis is used to analyze the designed controller in various scenarios. In addition, sensitivity analysis is performed to study the effect of virtual inertia gains on system stability. Time-domain simulation results using MATLAB/Simscape Power System toolbox show the effectiveness of the developed controller in very weak ac grid integration of VSC-HVDC systems.

引用

页码：1481 / 1490

页数：10

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