Proportional to the third power.
1. The most critical factor in wind power generation is the size of the wind, and wind conditions at sea are generally better than on land. The wind speed at sea 10 kilometers offshore is usually 20% higher than along the coast. The power generated by wind turbines is proportional to the cube of wind speed, so under the same conditions, the annual power generated by offshore wind turbines can be 70% higher than that on land. At the same time, there are few quiet wind periods at sea, so wind turbines can generate electricity for longer. Generally speaking, the annual power generation utilization hours of onshore wind turbines are about 2,000 hours, while offshore wind turbines can often reach more than 3,000 hours.
2. For wind power equipment, the land terrain is complex and rough, and the wind speeds at different heights often vary greatly, resulting in wind shear and turbulence, which causes uneven forces on the upper and lower parts of the wind wheel, which can lead to The blades vibrate, fatigue and even break, and the transmission system is also easily damaged. There are few such risks at sea. In addition, offshore wind power is mostly built tens of kilometers away from the coast, close to power consumption centers, and there is basically no risk of wind abandonment.
Wind power is a clean energy technology that uses wind energy to generate electricity. Its power generation efficiency is affected by many factors, including the following aspects:
Wind speed: Wind speed is one of the most important factors affecting wind power efficiency. The higher the wind speed, the faster the wind turbine spins and can produce more electricity. Normally, wind turbines start generating electricity when the wind speed is above 3 meters per second, and the efficiency of wind power generation is highest when the wind speed is above 10 meters per second.
Wind direction: Wind direction also affects the efficiency of wind power generation. Different wind directions will cause the wind turbine blades to be affected by different wind forces and directions, thereby affecting the efficiency of power generation.
Altitude: Altitude also affects the efficiency of wind power generation. In areas with higher altitudes, the air density is lower, and the wind force on the wind turbine blades is also smaller, which in turn affects the efficiency of power generation.
Temperature: Temperature also affects the efficiency of wind power generation. When the temperature is higher, the air density is lower, and the wind force on the wind turbine blades is also smaller, which in turn affects the efficiency of power generation.
Wind turbine design and quality: The design and quality of a wind turbine also affects its power generation efficiency. Excellent design can enable wind turbines to generate electricity efficiently at low wind speeds, and high-quality materials can extend the service life of wind turbines.
The parameters required for wind power calculation can be provided by the Xihe Energy big data platform (xihe-energy).