A NEW VOLTAGE SAG DETECTION ALGORITHM FOR DYNAMIC VOLTAGE RESTORE

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 validates the proposed method is effective and feasible.

关键词： Dynamic voltage restorer Voltage sag Dual DQ decoupling transformation

作者: WEI CHEN JUN XIAO WEIZHOU WANG

作者单位: College of Electrical and Information Engineering,Lanzhou University of Technology,Lanzhou,730050,Ch Gansu Electric Power Research Institute,Lanzhou,730050,China

会议类型: 国际会议

会议名称: 2011 3rd International Conference on Computer Technology and Development(2011第三届计算机技术与发展国际会议 ICCTD2011)

会议地点: 成都

会议语种:英文

页码: 2427-2431

在线出版日期: 2011-11-25（万方平台首次上网日期，不代表论文的发表时间）