Power control of virtual synchronous generator under unbalanced grid voltage

被引：0

作者：

Xiao X. ^{[1
]}

Chen M. ^{[1
]}

机构：

[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2017年 / 37卷 / 08期

基金：

国家高技术研究发展计划(863计划);

关键词：

Distributed power generation; Positive and negative sequence components; Power control; Power oscillation; Unbalanced grid voltage; Virtual synchronous generator;

D O I：

10.16081/j.issn.1006-6047.2017.08.026

中图分类号：

学科分类号：

摘要：

The output power of virtual synchronous generator under unbalanced grid voltage is analyzed and a power control strategy based on the stationary frame is proposed, which, without the phase locked loop, applies the negative-sequence voltage control to suppress the active-power oscillation, reactive-power oscillation and unbalanced three-phase currents respectively for ensuring the voltage-source nature and inertia property of the virtual synchronous generators and for enabling the distributed generation to output constant active-power, constant reactive-power or balanced three-phase currents as required. The effectiveness of the proposed control strategy is verified by PSCAD/EMTDC simulations and RTDS-based real-time digital-physical closed-loop experiments, and the features of its different control modes are quantitatively analyzed. © 2017, Electric Power Automation Equipment Press. All right reserved.

引用

页码：193 / 200

页数：7

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