Harmonic Effects of an OWPP Connection to Northwestern Part of Turkey-A Case Study

Nowadays count of Offshore Wind Power Plant investments are increasing drastically. Although Turkey is not familiar with OWPPs there is a recent tendency towards OWPPs so as to supply the increasing energy demand and meet with the lower carbon emission targets. Higher interest on larger scale OWPPs resulted in a dramatic increase in count of relevant studies. Increased harmonic introduction is considered as one of the most remarkable effects of offshore wind power plants. In terms of Turkey, Northwest part is considered as suitable for a possible OWPP connection. In order to meet grid code limits in terms of harmonics, a detailed harmonic analysis is executed for two different scenarios in case of a large scale OWPP integration. Through the analysis a frequency dependent model is employed and real voltage harmonic measurements from selected connection points is added to the developed model. Whole simulations are executed by using Power Factory Software. With this study a detailed scheme for harmonic reaction of the Turkish Transmission Network to integration of a large scale OWPP is explicitly drawn.