A comparative research for a new single-lobe digital filter and the Fourier filter
Lu Tao Yan · Relay · 2001
This paper focuses on the comparative research for a new single lobe digital filter and the Fourier filter.Contrasting to the Fourier filter,the single lobe filter has not side lobe,and its data window length is not restricted to multiples of one cycle.When the window length is greater than or equal to 2 cycles of the fundamental frequency,the single lobe filter is more accurate than Fourier filter.It is suitable for precise measuring and the fault location.