A METHOD OF OPERATING A WIND TURBINE PLANT

摘要

A method of operating a wind turbine plant is provided. Such a wind turbine plant comprises at least one transmission branch comprising a plurality of wind turbine generators and coupled to an electrical grid at a point of common coupling through at least one circuit breaker comprising a breaking capacity. The method comprises monitoring the electrical grid for a low voltage fault event; and if a low voltage fault event is detected: calculating a grid short circuit strength, determining a short circuit current limit if the grid short circuit strength requires an initial fault current contribution which exceeds the breaking capacity of the circuit breaker to be passed through the circuit breaker, determining a maximum fault current contribution based on the short circuit current limit and operating the wind turbine generators to provide to the electrical grid the maximum fault current contribution.

主权项

1. A method of operating a wind turbine plant comprising at least one transmission branch comprising a plurality of wind turbine generators, the transmission branch coupled to an electrical grid at a point of common coupling through at least one circuit breaker comprising a breaking capacity, the method comprising:
monitoring the wind turbine plant for a low voltage fault event; and if a low voltage fault event is detected:
calculating a grid short circuit strength,determining a short circuit current limit if the grid short circuit strength requires an initial fault current contribution which exceeds the breaking capacity of the circuit breaker to be passed through the circuit breaker,determining a maximum fault current contribution based on the short circuit current limit, andoperating the wind turbine generators to provide to the electrical grid the maximum fault current contribution.