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| An Improved Active Frequency-Drift Method for Islanding Detection With Low Harmonics Distortion |
| Deng Yanni1, 2, Gui Weihua2 |
| 1. Wuhan University of Technology Wuhan 430070 China 2. Central South University Changsha 410083 China |
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Abstract Anti-islanding protection is a mandatory feature for grid-connected inverters. A desired islanding detection method not only can detect islanding within acceptable duration, but also have less adverse impact on power quality. This paper analyzes the total harmonics distortion(THD)of grid-connected inverter. The connection of output current THD and anti-islanding algorithm is discussed. Based on it, an improved active frequency-drift method is introduced, which can meet the requirement of anti-islanding standard and has less distortion on inverter current. Simulation and experiments are developed to validate the proposal.
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Received: 09 March 2008
Published: 13 February 2014
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作者简介: 邓燕妮 女, 1962年生, 副教授, 主要研究方向为分散控制和鲁棒控制, 生产过程控制, 计算机控制与应用。桂卫华 男, 1950年生, 教授, 博士生导师, 主要研究方向为工业大系统递阶和分散控制理论及应用、鲁棒控制、复杂生产过程建模与控制等。 |
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2009, Vol. 24 
