Method of restarting a wind turbine

Patent metadata

Field	Value
Publication number	US-12577937-B2
Application number	US-202218695956-A
Country	US
Kind code	B2
Filing date	Sep 21, 2022
Priority date	Oct 1, 2021
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

A method of controlling a wind turbine is provided, including the steps of detecting a power-on time (TAP_on) at which auxiliary power becomes available after an absence of auxiliary power; determining, at power-on time (TAP_on), the elapsed time (Telapsed) since a dryness requirement of the wind turbine was satisfied; and subsequently initiating a wind turbine start-up procedure if the elapsed time (Telapsed) does not exceed a predetermined duration (Tsafe) or inhibiting a wind turbine start-up procedure if the elapsed time (Telapsed) exceeds the predetermined duration (Tsafe).

First claim

The invention claimed is:

1 . A method of controlling a wind turbine, the method comprising:
detecting a power-on time at which an auxiliary power for the wind turbine becomes available after an absence of the auxiliary power; determining, at the power-on time, an elapsed time since a dryness requirement of the wind turbine was satisfied, the dryness requirement including at least a dryness of an electrical system of the wind turbine; and either
initiating a wind turbine start-up procedure if the elapsed time does not exceed a predetermined duration, or
inhibiting the wind turbine start-up procedure if the elapsed time exceeds the predetermined duration.

2 . The method according to claim 1 , further comprising performing a dry-out procedure for the electrical system of the wind turbine if the elapsed time exceeds the predetermined duration.

3 . The method according to claim 2 , further comprising initiating the wind turbine start-up procedure after completion of the dry-out procedure.

4 . The method according to claim 2 , wherein a duration of the dry-out procedure is determined on a basis of the dryness of the electrical system of the wind turbine.

5 . The method according to claim 4 , wherein the dryness of the electrical system is established on a basis of a temperature measurement and/or a relative humidity measurement and/or a resistivity measurement obtained for the electrical system.

6 . The method according to claim 4 , wherein a state of the dryness of the electrical system of the wind turbine is recorded as a dryness timestamp, the dryness timestamp comprising a dryness status flag and a time of recording.

7 . The method according to claim 6 , further comprising initializing the dryness timestamp when a wind turbine control arrangement is installed, the initializing comprising setting the dryness status flag to indicate a dry state.

8 . The method according to claim 1 , further comprising computing a dry-out time for the electrical system of the wind turbine on a basis of a moisture-retention property of a material of the electrical system.

9 . The method according to claim 1 , further comprising computing a dry-out time for the electrical system of the wind turbine on a basis of an efficacy of a climate control apparatus arranged in an interior of the wind turbine, the climate control apparatus comprising at least one of a heater and a ventilator, wherein the efficacy is determined based on a rate of moisture evaporation measured during operation of the climate control apparatus.

10 . A computer program product, comprising a computer readable hardware storage device having computer readable program code stored therein, said program code executable by a processor of a computer system to implement a method according to claim 1 when the computer program is executed by a wind turbine control arrangement.

Assignees

• Siemens Gamesa Renewable Energy As

Inventors

• Hawkins Samuel
• Krogh Christian Joachim

Classifications

• F05B2260/85

  Starting · CPC title

• F05B2260/64

  Aeration, ventilation, dehumidification or moisture removal of closed spaces · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• F05B2270/323

  Air humidity · CPC title

• F05B2270/1033

  Power (if explicitly mentioned) · CPC title