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Kalman filter algorithm for digitally recorded lightning impulse parameter evaluation

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2 Author(s)
Perez, J. ; Departamento de Ingenieria Electrica, Univ. Politecnica de Madrid, Spain ; Martinez, J.

Relevant standards establish the construction of a mean curve in lightning impulses with perturbations (oscillations, overshoot, noise) in order to determine 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). A new method for constructing a mean curve in lightning impulses that uses an extended Kalman filter is described. This method needs a model for the mean curve or smooth impulse. A smooth impulse model based on existing ones is adopted. Results obtained with mathematical and real impulses are presented

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Power Delivery, IEEE Transactions on  (Volume:11 ,  Issue: 4 )