Graphic functions analytical identification at flicker evaluation

The flaring phenomenon or flicker is framed with no less than three indicators for which there are normalized values. The methodologies for determining indicators as flicker dose and severity as well as the voltage fluctuations limits use graphic functions, experimentally determined. A LabVIEW original program is used in order to identify the optimal analytical expressions for graphic or tabular functions like graphic functions from the flicker evaluation. It aims, on the one hand, to make easier the software implementation of the flicker indicators calculation methods and on the other hand to ensure their analytical handling. Simple expressions identified for graphic functions, relative to flicker, present acceptable relative mean square deviations, which allow the flicker dose determination with the required precision. Also, comparing the voltage fluctuations amplitudes with standardized values can be directly made, on an analytical way.