Voltage sag detection algorithm based on dual DQ decoupling transformation

被引：0

作者：

Chen, Wei ^{[1
]}

Xiao, Jun ^{[2
]}

Wang, Weizhou ^{[2
]}

机构：

[1] College of Electrical and Information Engineering, Lanzhou University of Technology

[2] Gansu Electric Power Research Institute

来源：

Lecture Notes in Electrical Engineering | 2012年 / 135 LNEE卷

关键词：

Dual DQ decoupling transformation; Dynamic voltage restorer; Voltage asymmetry; Voltage sag;

D O I：

10.1007/978-1-4614-2185-6_61

中图分类号：

学科分类号：

摘要：

Conventional DQ transformation method and the PLL technology can detect the amplitude and phase of voltage sag accurately, but the method is only applicable to the case of symmetrical three-phase voltage. When three-phase voltage unbalance, there is a certain bias in the results by use of this detection method. A new detection method of improved PLL based on dual DQ decoupling transformation is proposed in this paper, it removed the coupling relationship of output voltages by setting the positive and negative sequence voltages reference, so this method can accurately detect the amplitude and phase information of the voltage sag. Simulation results validate that the proposed method is effective and feasible. © 2012 Springer Science+Business Media, LLC.

引用

页码：515 / 521

页数：6

共 6 条

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