Temperature derating is a phenomenon that affects the performance of wind turbines. As temperatures of the wind turbine components such as the rotor, generator and transformer increase, the efficiency and power output decrease. This reduction in power output is known as temperature derating and it can significantly impact the energy production and financial viability of a wind project.
To predict temperature derating, wind project developers use time series analysis to create a model of temperature and power output over time. The model takes into account factors such as wind speed, ambient temperature, and temperature of the wind turbine components. The model is then used to determine the expected reduction in power output due to temperature derating, allowing wind project developers to minimize its impact on energy production by optimizing the design and placement of the turbines.
The extent of temperature derating is influenced by factors such as the design of the wind turbine components, the cooling systems used and the surrounding environment. For instance, wind turbines in hot and arid regions experience more significant temperature derating compared to those in cooler climates. Cooling systems like air or water cooling can help minimize the impact of temperature derating.
When designing a wind project, wind project developers must consider the expected temperature derating to meet safety and performance standards. For example, the International Electrotechnical Commission (IEC) has established standards for wind turbines specifying the maximum operating temperature for each component. Wind project developers must ensure that the design, cooling systems and overall project layout meet these standards.
In addition, wind project developers must ensure that the expected temperature derating doesn't significantly impact the energy production and financial viability of the project. This requires careful consideration of the location and design of the wind turbines and the use of cooling systems and other mitigation measures.
By using time series analysis to predict temperature derating, wind project developers can optimize the design and placement of the turbines to maximize energy output and meet necessary safety and performance standards. With the growing focus on renewable energy and the wind energy sector, understanding and mitigating the impact of temperature derating will become increasingly important.
International Electrotechnical Commission (IEC) - Wind Turbine Standards
Temperature Derating in Wind Turbines: Causes, Effects and Mitigation Measures, Journal of Energy and Power Engineering, Vol. 8, No. 5 (2014)
Understanding and mitigating the impact of temperature derating in wind turbines, Renewable and Sustainable Energy Reviews, Vol. 75 (2017)