ABSTRACT
In western Denmark, there are already observed situations where wind turbines and local combined heat and power (CHP) units cover between 30 and up to 100 per cent of the power consumption. The revision is made to get a more realistic approach to the dynamic behaviour of the large wind power network at severe grid disturbances. At present, the local CHP units are set to control the power factor, which is why the local CHP units do not contribute to dynamic control of reactive power or to support of voltage re-establishment at the grid faults. In the most probable wind, the power loss is mainly caused by disconnection of the local CHP units, but not by the local wind turbines. The power loss due to tripping of the local wind turbines in area 1 is of the same pattern and amount as in the case of the grid connection to the weak power network.
