A wind park system is disclosed. Briefly described, one embodiment includes at least one wind power installation having a rotor; an electrical generator drivable by the rotor, such that the electrical generator is operable to deliver electrical power to an electrical network; and a control device operable to control at least a voltage and a current of the electrical power delivered into the electrical network, and operable to implement a phase angle change in dependence on a network voltage measured at least one location within the electrical network, wherein the phase angle determines the phase position between the current and the voltage of the electrical power delivered by the electrical generator.