Report

Harmonics and Wind Power

Updated 2021-10-11 Published 2019-02-19

The introduction of wind-power installations adds a new source of harmonics to the power system. The primary emission from these installations is however small and the main impact is because of the introduction of new resonances by the capacitance of the cables in the collection grid or by the capacitance of long AC transmission cables. This project has contributed to a better understanding on these resonances and the way in which they affect the spread of harmonics from the turbines into the public grid and from the public grid into the collection grid.

The project has resulted in additional knowledge especially concerning the
spread of harmonics through the wind parks (from the turbines to the public
grid; between turbines; and from the public grid to the collection grid). That
knowledge has been applied especially to the impact of capacitor energizing on
wind-power installations and to the spread of different types of disturbances
from PV installations to the low-voltage grid.