TY - GEN
T1 - Multi-resolution wavelet analysis for chopped impulse voltage measurements
AU - Onal, Emel
PY - 2009
Y1 - 2009
N2 - In this study, an application of the wavelet transform based on the multi-resolution analysis (MRA) is aimed for evaluation of amplitude and time parameters of the chopped impulse voltage. In terms of the getting data set, chopped lightning impulse voltages with different chopping times are considered and MRA is applied to these data as different case studies. Hence, some characteristic properties are extracted from the impulse waveforms at some special frequency values. In this sense, frequency component of 33 MHz is found with a maximum peak value for each case before the chopping time and their appearing times for two cases are determined using the time-frequency analysis. Hence difference between the chopping time and occurring time of the maximum peak values at 33 MHz is calculated easily. Also, some physical interpretations of the frequency component of 33 MHz are defined through the circuit parameters of the measurement system. In usual application, the MRA can be presented as a powerful technique to extract the noise effects, which come from the different sources, in the high voltage measurements.
AB - In this study, an application of the wavelet transform based on the multi-resolution analysis (MRA) is aimed for evaluation of amplitude and time parameters of the chopped impulse voltage. In terms of the getting data set, chopped lightning impulse voltages with different chopping times are considered and MRA is applied to these data as different case studies. Hence, some characteristic properties are extracted from the impulse waveforms at some special frequency values. In this sense, frequency component of 33 MHz is found with a maximum peak value for each case before the chopping time and their appearing times for two cases are determined using the time-frequency analysis. Hence difference between the chopping time and occurring time of the maximum peak values at 33 MHz is calculated easily. Also, some physical interpretations of the frequency component of 33 MHz are defined through the circuit parameters of the measurement system. In usual application, the MRA can be presented as a powerful technique to extract the noise effects, which come from the different sources, in the high voltage measurements.
KW - Chopped impulses
KW - High voltage
KW - Multi resolution analysis
KW - Signal energy
KW - Wavelet transforms
UR - http://www.scopus.com/inward/record.url?scp=74549226561&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:74549226561
SN - 9789604741083
T3 - Proceedings of the 9th WSEAS International Conference on Signal Processing, Computational Geometry and Artificial Vision, ISCGAV '09
SP - 73
EP - 77
BT - Proceedings of the 9th WSEAS International Conference on Signal Processing, Computational Geometry and Artificial Vision, ISCGAV '09
T2 - 9th WSEAS International Conference on Signal Processing, Computational Geometry and Artificial Vision, ISCGAV '09
Y2 - 20 August 2009 through 22 August 2009
ER -