Title :
Precision digital filters for high voltage impulse measurement systems
Author :
Rungis, Juris ; Li, Yi
Author_Institution :
Nat. Meas. Lab., CSIRO, Sydney, NSW, Australia
fDate :
10/1/1999 12:00:00 AM
Abstract :
This paper reports the design, testing and practical applications of two types of high order FIR digital filters for noise reduction and data smoothing of high voltage impulse waveforms. Particular attention is paid to the estimation of the error limits introduced by the digital filters. The error estimation involves the analysis of the frequency components of the impulse waveforms, the ripple calculation of the filters and testing of the filters with simulated and real impulse waveforms. The relationships between the filter parameters and the required filter accuracies are established
Keywords :
FIR filters; digital filters; pulse measurement; voltage measurement; data smoothing; digital filters; error limits estimation; frequency components analysis; high order FIR digital filters; high voltage impulse measurement systems; impulse waveforms; noise reduction; ripple calculation; uncertainty calculation; Digital filters; Error analysis; Estimation error; Finite impulse response filter; Frequency estimation; Impulse testing; Noise reduction; Pulse measurements; Smoothing methods; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on