On the Assessment of Power Qaulity Characteristics of Grids Connected Wind Energy Conversion Systems.

Abstract

This paper presents a wind park power quality tool, developed in MATLAB, following the specifications contained in IEC 61400-21 standard, being the flickermeter model constructed according to IEC 61000-4-15 standard. Wind energy dedicated procedures and methodologies, such as the concept of fictitious grid and the two different modes of operation – continuous and commutated – are then applied in accordance with IEC 61400-21 standard. In order to test all the functionalities and proper behaviour of the developed tool, a case study from which power quality related data is available, was selected. Some simulation results obtained with the developed software tool are presented with the main objective of illustrating the methodologies that have been followed in its development. Furthermore, the validation of the model implemented in the WECS power quality tool is performed against the results obtained by the certified institution that was involved in the power quality tests of Samos Island, in Greece.