Control strategy of MV dynamic voltage restorer as virtual impedance

被引：0
|
作者：
Zhou W. [1 ]
Le J. [1 ]
Yang J. [1 ]
Du X. [1 ]
Liu K. [1 ]
机构：
[1] School of Electrical Engineering, Wuhan University, Wuhan, 430072, Hubei Province
来源：
Dianwang Jishu/Power System Technology | 2016年 / 40卷 / 08期
关键词：
DVR; Fault current limit; Series compensation; Virtual impedance; Voltage sag;
D O I：
10.13335/j.1000-3673.pst.2016.08.040
中图分类号：
学科分类号：
摘要：
MV dynamic voltage restorer can be used to protect a group of customers from voltage sags caused by faults in power system except those happening at downstream of DVR. Method controlling DVR as virtual impedance is proposed in this paper. Transfer function is derived and stability and feasibility are analyzed according to Bode figure and Routh-Hurwitz criterion. Controlling DVR as virtual inductance to limit fault current and as virtual capacitor to compensate voltage loss is taken as examples. Simulation and experiment results verify feasibility and effectiveness of the proposed scheme. This paper provides a reference for expanding functions of MV DVR and improving its practical application. © 2016, Power System Technology Press. All right reserved.
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页码：2525 / 2532
页数：7
相关论文
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