基于提升小波变换的冲击性负荷电能表设计

Design on electric energy meter of impact load based on lifting wavelet transforms

分析了提升小波变换的分解原理,提出了基于提升小波变换的冲击性负荷电能计量新方法,并进行了冲击性负荷电能表的硬件设计。与传统电能表相比,该电能表能适应冲击性负荷情况下电流动态范围大、频带宽的测量特点。通过仿真实验,论证了该方法的可行性,并证明了该方法在实时处理速度上要优于第一代小波变换。

The principle of lifting wavelet transform is analyzed,a new method based on the lifting wavelet transform used for the impact load electric energy measurement is proposed,the impact load electric energy meter hardware design is carried out.Compared with the conventional meter,the meter can adapt to wide current dynamic range,and frequency bandwidth of the measurement characteristics in the impact load cases.Through simulation experiments,the feasibility of this method is demonstrated and it is also demonstrated its real-time processing speed is better than the first generation wavelet transform.