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| 摘要: |
| 提出了一种利用定间隔时间采样点的大小计算电压有效值的方法。该算法通过最少采样点（3点）的曲线拟合法求得电压有效值。为防止计算失败及提高计算精度，采用了多个采样点绝对值和补偿及平均平滑补偿措施，该算法不受信号频率的影响，可以在很宽的信号频带范围内得到电压计算值，并且计算精度较高，对纹波也有较强的抑制能力。 |
| 关键词: 信号频率 电压计算方法 电力系统 电能质量 |
| DOI： |
| 分类号:TM744 |
| 基金项目: |
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| A volta, ge measurement algorithm uninfluenced by signal frequency |
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ZHOU Shui-bin 1 YANG Min 2 CHEN Xiao-qiao 1 LI Qing-hua 2
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| Abstract: |
| An algorithm for calculating the effective value of measured voltage based on equal in-terval sampling is proposed,which adopts the curve fitting with three sample points.The measures of absolute value summation and multi-point averaging are applied to improve the measurement precision and prevent calculation failure.The algorithm is not inf luenced by signal frequency and the voltage measurement has better precision in a wide signal frequency band.It has a stronger ripple suppress capability too. |
| Key words: frequency,voltage,voltage measurement,power system |
