Wind power generation -- wind power hybrid tower technology and breeze power generation technology solutions

Wind power generation refers to the conversion of wind kinetic energy into electric energy. Wind is one of the energy sources without pollution. And it's inexhaustible, inexhaustible. For the coastal islands, grassland and pastoral areas, mountainous areas and plateau areas with water shortage, fuel shortage and inconvenient transportation, it is very suitable and promising to use wind power generation according to local conditions. As the most competitive renewable energy, the relatively high cost of wind power is still the key factor restricting its future development. To make wind power replace a lot of fossil fuels, it still needs to be cheaper.

As the opposite of large-scale wind power, aeolian power generation has its own advantages and characteristics. It is very useful for some old areas, ethnic minority areas, mountainous areas, poor areas and some border guard posts. If we fully integrate the breeze with the existing solar energy, energy storage and other technologies, we believe that its future development prospects are very bright.

China International Power Group Co., Ltd. wind power hybrid tower technology and dual axis breeze power generation equipment to provide more customers with system solutions.

1. Wind power mixed tower technology

In recent years, the domestic installed capacity continues to increase, and there are less and less wind resources in inland areas. The wind farm development area has transferred from the area with better wind resources in the past to the area with general wind resources. After the use of large diameter blades, the use of high tower has become the main technical means to improve the investment income.

At present, there are two main technical routes of high tower: all steel flexible tower and mixed tower (including steel-concrete tower and all concrete tower). When selecting the technical route of high tower, it is usually necessary to consider the basic parameters and control strategy of the whole machine, as well as the manufacture, transportation, installation and maintenance of the tower. Determined by the characteristics of concrete, the concrete tower has a series of advantages, such as good durability, low maintenance cost, high stiffness and no buckling problem. At the same time, there is no need to change the fan control strategy to achieve "frequency ride through", and it can match most models.

After nearly ten years of continuous development, the mixed tower technology applied by China International Power Group Co., Ltd. and mecal Co., Ltd. has run products with a height of 100 meters to 160 meters. The products include steel mixed tower and full mixed tower. In addition, it has cooperation projects with major wind turbine manufacturers in the world, with installation and operation performance of more than 2000 units.

(01) mould advantages

The first mock exam of the mixed precast concrete block is small, flexible and modular, and the design of the prefabricated component dies is very low.

(02) production and cost advantages

The concrete volume of the whole tower is small, the types of prefabricated components are small, and the horizontal pouring products are consistent. The raw materials required for tower production can be purchased locally, and the accuracy of component products is easy to ensure.

(03) advantages of installation and transportation

The shape design of prefabricated components is reasonable, the prefabricated components can be transported by ordinary trucks, and there is no "three excess" problem (over length, over width, over weight) in highway transportation; The number of tower sections is small, the site occupation is small, and the hoisting operation time is short; The tension system adopts external arrangement, which reduces the construction difficulty and shortens the construction period. During the operation, the tension system can be observed visually.

2. Breeze power generation technology

The duration of wind speed in different regions is different. Traditional wind turbines require a wind speed of more than 12 m / s in order to operate normally. However, in most inland regions, the wind speed is only 2-3 (breeze: 3-6 M / s) for a long time, which makes the traditional wind turbines unable to operate normally and even less popular. Therefore, we have developed a dual rotor permanent magnet wind turbine for many years. The dual rotor permanent magnet generator has a different rotation mode from the traditional motor. The armature rotor and the permanent magnet rotor rotate in reverse direction, and the power generation can be increased by many times under the same wind speed. The traditional generator generates less or no power in the breeze. The dual rotor generator can not only easily generate power in the breeze, but also achieve rated power. The running time is longer and the efficiency is higher, which is incomparable to the traditional wind turbine. The double rotor permanent magnet generator has strong adaptability (with breeze), wider installation area and huge economic benefit potential“ The successful research and development of "double engine wind speed high efficiency wind power technology" is fully applicable to this scientific research achievement, whether it is the installation of new wind farms or the technical transformation of traditional wind turbines. Traditional wind turbines need more than 10 meters per second wind speed to achieve rated power operation. This new technology can achieve the rated power operation target under the wind speed of 5.8 meters per second, reduce the generation of "garbage power", and ensure the efficient and safe operation of power grid.

The technology has obtained many patents, and the product has been trial manufactured and has entered the practical stage:

Cn201120572774 - wind energy conversion device for MW wind power generation system - utility model

Cn201520792479 multi layer superimposed Coreless Permanent magnet generator utility model

Cn201520792480 power enhancement device for bidirectional rotary axis wind turbine utility model

Cn201520792480 - power enhancement device for bidirectional rotary axis wind turbine - utility model

Cn201620354837 - a double power vertical axis fan bucket blade - utility model

Cn201110458891 - wind energy conversion device for MW wind power generation system - invention

Cn201510665615 power enhancement device for bidirectional rotary axis wind turbine - invention

Cn201811083475 - wind power enhancement device for dual engine wind turbine - invention