基于8项余弦窗的高精度铁心接地电流实用算法

Practical algorithm for accurate earth current of core based on eight term cosine window

本文介绍了基于8项余弦窗的铁心接地电流的实用算法,首先根据硬件技术水平确定了Matlab仿真中干扰信号的参数,在特定比例的干扰信号下,仿真验证了不同参数对算法精度的影响,确定了合理的算法参数,并在实际DSP硬件上测试算法的精度,验证了数字信号处理仿真结论。

An accurate algorithm for earth current of core is studied in the paper, eight term cosine window is used for the algorithm. The algorithm theory is simulated in Matlab first with random interference added to the current signal. Certain amount of interference is used according to the actual hardware noise level. Simulation result is made based on the interference level. Some simulation parameters are optimized and the algorithm is used on a real DSP processor. The calculation result of the DSP processor is also given in the paper.