Wind farm and method for operation of a wind farm
AssigneeREpower Systems AG
InventorsJens Fortmann, Friedrich Koch
Life of this patent
Estimating the term…
Abstract
A wind farm in which electrical power produced in the wind farm is transported via a wind-farm-internal network to a substation. Upon being transferred to an external network, the electrical power is transformed to a voltage which is higher by a selectable step-up ratio than the voltage in the wind-farm-internal network. The electrical load level on a wind energy installation in the wind farm is determined, and the step-up ratio is adjusted as a function of the electrical load level. Accordingly, it is possible to influence the voltage in the wind-farm-internal network such that the wind energy installations are subject to a lower electrical load level.
Claims14
A method for operating a wind farm, in which electrical power produced in the wind farm is transported via a wind-farm-internal network to a substation and in which, before being transferred to an external network, the electrical power is transformed to a voltage which is higher by a selectable step-up ratio than the voltage in the wind-farm-internal network, the method comprising:
- determining an electrical load level on a wind energy installation in the wind farm;
- determining a wattless component margin between the electrical load level and the system limits of the wind energy installation;
- and
- adjusting the step-up ratio as a function of whether the predetermined wattless component margin is maintained.
A wind farm, comprising:
- a wind energy installation;
- a substation at which electrical power produced in the wind farm is transmitted from a wind-farm-internal network to an external network;
- a stepping switch configured to adjust a step-up ratio between a voltage in the wind-farm-internal network and a voltage in the external network;
- and
- a wind farm regulator configured to preset the step-up ratio on the stepping switch as a function of whether a predetermined wattless component margin between an electrical load level on the wind energy installation and the system limits of the wind energy installation is maintained.
Dependencies are inferred from the claim text.