METHOD FOR AVOIDING VOLTAGE INSTABILITY IN AN ELECTRICAL GRID OF AN OFFSHORE WIND PARK
3 Assignments
0 Petitions
Accused Products
Abstract
Method for avoiding voltage instability in an electrical grid of an offshore wind park, the offshore wind park electrical grid being connected at a first end of a high voltage alternating current (HVAC) transmission and the main land electrical grid being connected at a second end of the HVAC transmission, each of the wind turbines being connected to the wind park electrical grid, the method comprises determining a main land phase angle at or near the second end of the HVAC transmission; measuring an individual wind turbine phase angle at one or more wind turbines; determining the difference between each of the measured individual wind turbine phase angles and the main land phase angle; and determining whether the difference between one of the measured individual wind turbine phase angle and the main land phase angle exceeds a threshold phase angle difference.
39 Citations
32 Claims
-
1-14. -14. (canceled)
-
15. A method for predicting a voltage instability in an electrical grid of an offshore wind park, the offshore wind park electrical grid being connected at a first end of a high voltage alternating current transmission and a main land electrical grid being connected at a second end of the high voltage alternating current transmission, and
the offshore wind park having a plurality of wind turbines connected to the wind park electrical grid, the method comprising: -
determining a main land phase angle at or near the second end of the high voltage alternating current transmission, measuring an individual wind turbine phase angle at one or more of the wind turbines, determining a difference between each of the one or more measured individual wind turbine phase angles and the main land phase angle, determining a threshold phase angle difference, and predicting voltage instability when at least one of the differences between the measured individual wind turbine phase angles and the main land phase angle exceeds the threshold phase angle difference. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. A method for avoiding voltage instability in an electrical grid of an offshore wind park, the offshore wind park electrical grid being connected at a first end of a high voltage alternating current transmission and a main land electrical grid being connected at a second end of the high voltage alternating current transmission, and
the wind park having a plurality of wind turbines, each of the wind turbines being connected to the wind park electrical grid, the method comprising: -
determining a main land phase angle at or near the second end of the high voltage alternating current transmission, measuring an individual wind turbine phase angle at one or more of the wind turbines, determining a difference between each of the one or more measured individual wind turbine phase angles and the main land phase angle, determining a threshold phase angle difference, determining whether at least one of the differences between the one or more measured individual wind turbine phase angles and the main land phase angle exceeds the threshold phase angle difference, and if the one or more differences exceeds the threshold phase angle difference, perform an action to avoid the voltage instability. - View Dependent Claims (29, 30, 31, 32)
-
Specification