Naslov
Estimation of Load Capacitance and Stray Inductance in Lightning Impulse Voltage Test Circuits

Autori
Filipović-Grčić, Božidar ; Filipović-Grčić, Dalibor ; Gabrić, Petar

Izvornik
Electric power systems research (0378-7796) 119 (2015); 439-446

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
lightning impulse voltage testing ; genetic algorithms ; load capacitance ; stray inductance ; lightning impulse generator ; Laplace transform

Sažetak
In order to obtain the lightning impulse voltage waveshape regarding front time, time to half and relative overshoot magnitude within the limits prescribed by IEC 60060-1, it is useful to accurately estimate the test circuit parameters, e.g. load capacitance and circuit inductance. A stray inductance consists of the inductance of impulse generator and the inductance of connecting leads. Load capacitance consists of voltage divider capacitance, test object and parasitic capacitances. In practice, the test object capacitance is often unknown. Capacitance measurement takes time and makes testing procedure more complex. Also, it is very difficult to estimate parasitic capacitances although their influence can sometimes be significant. This paper presents a new genetic algorithm (GA) based method for fast and accurate estimation of load capacitance and circuit inductance during lightning impulse voltage testing of a capacitive load. Computational and experimental verification of the method is successfully performed for standard and non-standard lightning impulse waveforms with various relative overshoot magnitudes.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

Napomena
Journal Impact Factor from JCR Database (2013): 1.595 ; Category Name: Engineering, electrical & electronic ; Journal Rank in Category: 91 ; Quartile in Category: Q2.

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