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。
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.
出处
《电力自动化设备》
EI
CSCD
北大核心
2003年第2期66-67,共2页
Electric Power Automation Equipment
