QIU Hai-feng, ZHOU Hao. High-accuracy Estimation of Dielectric Loss Angle Using the Improved Blackman-windowed Interpolated Algorithm[J]. High voltageapparatus, 2008, (3): 236-238+269.
QIU Hai-feng, ZHOU Hao. High-accuracy Estimation of Dielectric Loss Angle Using the Improved Blackman-windowed Interpolated Algorithm[J]. High voltageapparatus, 2008, (3): 236-238+269.DOI:
The non-synchronization caused by the frequency fluctuation will cause remarkable error when the harmonic analysis method is used in the on-line monitoring of dielectric loss. In order to improve the measuring accuracy of the dielectric loss
this paper adopted the Blackman-windowed Interpolated DFT algorithm to analyze the dielectric loss angle based on the capacity of digital microprocessor
and updated the results according to the definition of dielectric loss. The simulation results demonstrate that the measuring accuracy is improved and influenced little by frequency fluctuation. So it is a worthy method for the on-line monitoring of dielectric loss.