| 一种不受信号频率影响的电压计算方法 |
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| 引用本文： | 周水斌,杨敏,等.一种不受信号频率影响的电压计算方法[J].电力自动化设备,2003,23(2):66-67. |
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| 作者姓名： | 周水斌 杨敏 |
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| 作者单位： | 1. 武汉大学,电子信息学院,湖北,武汉,430072
2. 许昌继电器研究所,河南,许昌,461000 |
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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。
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| 关 键 词： | 信号频率 电压计算方法 电力系统 电能质量 |
| 文章编号： | 1006-6047(2003)02-0066-02 |
A volta, ge measurement algorithm uninfluenced by signal frequency |
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| ZHOU Shui-bin,YANG Min,CHEN Xiao-qiao,LI Qing-hua.A volta, ge measurement algorithm uninfluenced by signal frequency[J].Electric Power Automation Equipment,2003,23(2):66-67. |
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| Authors: | ZHOU Shui-bin YANG Min CHEN Xiao-qiao LI Qing-hua |
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| Affiliation: | 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. |
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| Keywords: | frequency voltage voltage measurement power system |
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