Title :
Digitally recorded lightning impulse with overshoot parameter evaluation by using the Kalman filtering method
Author :
Perez, J. ; Martinez, J.
Author_Institution :
Dept. de Ingenieria Electr., Univ. Politecnica de Madrid, Spain
fDate :
10/1/1998 12:00:00 AM
Abstract :
Relevant standards establish the construction of a mean curve in lightning impulses with perturbations (oscillations, overshoot, noise) in order to determine the impulse characteristic parameters (peak value, front time, time to half-value and voltage at the instant of chopping and time to chopping if it is the case). In the case of an impulse with overshoot the guidance given by the IEC 60-1 standard in order to determine the existence of overshoot, the duration of overshoot and the mean curve to be drawn are not sufficient if digital recording systems are used. This problem is studied and a procedure that uses the Kalman filtering method in conjunction with acceptable criteria is described. Results obtained with analytical impulses, real impulses and the reference waveforms of the IEC 1083-2 standard are presented. Suggestions to improve the actual standards are given
Keywords :
Kalman filters; digital instrumentation; high-voltage techniques; lightning; signal processing; standards; voltage measurement; IEC 1083-2 standard; IEC 60-1 standard; Kalman filtering method; chopping instant; digitally recorded lightning impulse; front time; impulse characteristic parameters; mean curve; overshoot parameter evaluation; peak value; reference waveforms; time to chopping; time to half-value; Construction industry; Digital filters; Digital recording; Filtering; IEC standards; Kalman filters; Lightning; Power system measurements; Power systems; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on