Title :
A proposal for the automatic evaluation of the mean curve required by the ANSI/IEEE Std 4-1978
Author :
Angrisani, Leopoldo ; Daponte, Pasquale
Author_Institution :
Dipt. di Ingegneria dell´´Inf. & Ingegneria Elettrica, Salerno Univ., Italy
fDate :
10/1/1998 12:00:00 AM
Abstract :
The paper proposes a method, based on the wavelet packet transform, for the automatic evaluation of the mean curve required by the ANSI/IEEE Std 4-1978. After some theoretical remarks on the wavelet packet transform, the fundamental stages of the method are illustrated in detail. Results obtained with analytical impulses and real impulses digitized in some European high-voltage laboratories show the effectiveness and reliability of the method. Suggestions to improve the present standard are also given
Keywords :
ANSI standards; IEEE standards; curve fitting; high-voltage techniques; impulse testing; lightning; signal classification; signal reconstruction; signal sampling; time-frequency analysis; voltage measurement; waveform analysis; wavelet transforms; ANSI/IEEE Std 4-1978; HV tests; analytical impulses; automatic evaluation; entropy based algorithms; impulses with overshoot; lightning impulses; mean curve; real impulses; signal reconstruction; time-frequency approach; transient phenomena; virtual front time; wavelet packet transform; Circuit testing; Impulse testing; Lightning; Parameter estimation; Proposals; Shape measurement; System testing; Voltage; Wavelet packets; Wavelet transforms;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
