Wind Power Network News: There is a serious mismatch between our country’s wind energy resource endowment and electricity consumption. The Three-North region is rich in wind energy resources, and there are many large-scale wind power bases, which are key areas in the national wind energy layout. The southern part of the Middle East has a prosperous economy, developed light and heavy industries and commerce, high social electricity consumption and good electricity consumption capacity, but wind energy resources are not satisfactory. In this context, the national wind power development “13th Five-Year Plan” clearly stated that it is necessary to accelerate the development of onshore wind energy resources in the central, eastern and southern regions. Driven by policies and commercial interests, the wind power development market has gradually moved south, and low wind speed wind power has developed.
Technical support for low wind speed wind power
At present, there is no accurate definition of low wind speed in the industry, mainly the wind speed below 5.5m/s is called low wind speed. At CWP2018, all wind turbine exhibitors released the latest low wind speed/ultra low wind speed models for low wind speed areas accordingly. The main technical means are to increase the height of the tower and extend the fan blades in the low wind speed and high shear area, so as to achieve the purpose of adapting to the low wind speed area. The following are the models launched by some domestic manufacturers for low wind speed areas that the editor visited and counted at the CWP2018 conference.
Through the statistical analysis of the above table, we can see the following rules:
The long leaves
For the low wind speed areas in the southern Middle East, long blades can effectively improve the ability of wind turbines to capture wind energy, thereby increasing power generation.
2. Large unit
The southern region is mostly mountainous, hilly, and farmland, which has created the phenomenon that the effective land area that can be used is relatively small.
3. High tower
The high-tower fan is mainly launched for the low wind speed and high shear area in the plain, and the purpose of touching the higher wind speed by increasing the height of the tower
Post time: Mar-08-2022
