摘要
在电网谐波污染日益严重的情况下,提高电能计量的精度是大势所趋。分析了电网谐波影响下现有电能计量方法的准确性,以及基于谐波分析理论的电能计量方法,提出了Hanning加权插值FFT算法的电能计量模型,并对该模型进行了数值仿真,结果表明本文提出的改进模型有较高的精度,而计算量无明显增加。在高性能硬件条件的基础上,该算法模型将有较大的实际意义。
With the state of serious harmonic pollution in the electric network, improving the precision of power metering becomes more and more important. This paper analyses the accuracy of present power metering methods, and based on the harmonic analysis of power metering, it provides the power metering model of Hanning-weighted interpolating FFT with its numerical simulation, and the calculation results show that the modified model reveals high accuracy without much extra computation. By the aid of high performance DSP and other hardware, the power metering model of Hanning-weighted interpolating FFT is quite useful in engineering applications.
出处
《继电器》
CSCD
北大核心
2004年第10期27-30,共4页
Relay
