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| 摘要: |
| 针对由投运空载变压器引起的电能质量问题进行了实验研究．并对实验结果进行了理论分析；提出了一种基于信号自回归模型的电压骤降检测方法，采用固定阶数的时变自回归模型对电压的采样序列进行处理，并给出了具体步骤。在Matlab下对实验结果按所提的方法进行了仿真分析，结果证明了该方法的正确性。 |
| 关键词: 电压骤降 变压器 励磁涌流 自回归模型 电能质量 |
| DOI： |
| 分类号:TM71 |
| 基金项目: |
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| Study of power quality problems caused by no-load transformer commission |
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TIAN Li-Jun QIN Ying-lin SUN Xiao-ming
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| Abstract: |
| Power quality problems caused by no-load transformer commission are studied through experiments and the results are analyzed theoretically. A method to detect the voltage sag based on auto-regressive model is proposed. The sampling sequence of voltage is processed with fixed-order time-varying auto-regressive model,and its steps are offered. According to the proposed method,simulation with Matlab is carried out,and the results show its correctness. |
| Key words: voltage sag,transformer,inrush current,auto-regressive model,power quality |
