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6 Frequently Asked Questions about “Base station wind power source operating temperature”
What temperature should a wind turbine operate at?
During the meeting, CTUIL representatives explained that the IEC 61400-1 standard, which applies to wind turbines, sets the normal operating temperature range between -10°C and +40°C, with an extreme range of -20°C to +50°C. They discussed whether the reduced efficiency of turbines at 40°C should be considered when determining grid connectivity.
What factors should be considered in a wind turbine load calculation?
The friction rates in the bearing at low temperatures may be considered in the load calculation and design. If the pitch and yaw systems are part of the wind turbine's operation and safety strategy, the operability and start-up (e.g. brakeaway torques) of the pitch and yaw system over the whole range of temperatures shall be documented (see [4.4]).
How to choose a wind turbine component?
For components such as bearings, yaw system, gear box, etc., the component manufacturer shall state that the respective part is suitable for the intended temperature range. The wind turbine manufacturer shall specify the temperature ranges which mechanical and structural components may be used within.
What are the new guidelines for wind turbine generators?
The Ministry of Power has issued new guidelines for Wind Turbine Generators (WTGs), specifying that turbines capable of operating at full capacity up to 40?C, in accordance with the IEC 61400-1 standard, will be considered for grid connectivity.
What is the minimum gearbox temperature for a wind turbine?
This temperature has to be specified by the gearbox manufacturer or alternatively minimum gearbox temperature of +10°C may be used. This section provides requirements and information for electrical components of wind turbines in extreme (low/high) temperature environment. If grid code compliance is planned it is described in /19/.
What if the operating temperature of a wind turbine is not specified?
If the operating temperature defined for the component is outside the minimum level specified according to the respective material standard, the wind turbine manufacturer shall verify and submit the material certificate, which documents the mechanical properties of the materials under the relevant temperature conditions.