Wind energy, as an inexhaustible and inexhaustible renewable clean energy, is clean and renewable and renewable. According to the relevant data, the theoretical reserves of China's land wind energy resources are 3 billion 226 million KW, the utilization of wind energy reserves is 253 million KW, the coastal and islands with abundant wind energy resources are 1 billion kw, up to 201. 3 years, the national grid of wind power installed 75 million 480 thousand kilowatts, an increase of 24.5%, installed capacity is the world's first; the national grid of wind power generation of 140 billion 100 million kwh, an increase of 36.6%, higher than the growth rate of wind power installed at the same time. With the importance of environmental protection, the energy crisis, the declining cost of installation and other factors, as well as the introduction of wind power support policies, wind power will usher in a leap forward development, which makes the defects of wind power increasingly prominent. As we all know, wind energy has the characteristics of intermittence and randomness. When the wind speed changes, the output power of the wind turbine is also changed. When the peak is used, the wind may not be wind, when the peak is available, the wind is very large, which affects the normal operation of the power grid, and the supply and demand of the wind power generation can hardly be coordinated. " The phenomenon of wind is very common, which makes the annual effective utilization hours of wind power generation very low. The key to solve this problem is to develop the wind energy storage technology. When the wind power rich power grid is in the low peak of electricity use, the excess electricity is stored. When the power grid is in the peak of power consumption, the stored electricity is entered into the power grid to ensure the stability of the grid connected. The wind power industry can develop smoothly only by combining wind power generation technology with energy storage technology, learning from each other's strengths and complementing each other's strengths.
Energy storage is a temporary storage of energy, which is released when it is used. It is divided into chemical energy storage, physical storage and other storage energy. Chemical energy storage is mainly used to store energy by storage battery; physical energy storage can be divided into compressed air energy storage, pumped storage energy, flywheel storage energy, and other storage energy mainly have superconducting electromagnetic storage. Energy storage, storage energy, storage energy, storage energy, storage energy, storage energy and so on. The above storage methods are different, but there is a lack of one kind, which is easy to use, large energy storage, less investment, less efficient and economical, the birth of "a kind of high efficiency solid accumulator", or will change this situation.
The solid accumulator, as its name implies, is the use of solid to complete the energy storage, should belong to the physical energy storage, it has a unique advantage compared with the other various energy storage methods. Although the chemical energy storage has a long history and a wide range, it has some drawbacks, first of all, the energy storage is relatively small, and the second is that the waste battery treatment is easy to stain. Although the existing physical energy storage can overcome the disadvantages of chemical energy storage, the energy stored in the storage needs two times to complete the energy storage and low efficiency. In addition, although the storage capacity of the pumped storage energy is large, it can not get rid of the restriction of the two conversion, and the investment is large, the land is more occupied and the efficiency is slow, and the more advanced other Although the energy storage method has conquered many energy storage problems, but because the technology is not mature, and the cost of energy storage is too high, it is difficult to popularize it at the present stage. The problem of wind power development at this stage has not been tackled.
The development of an efficient solid accumulator may change this situation. It is based on the theory that the energy comes from the gravity of the earth and is returned to the earth's gravitational force, that is, the gravitational force of the earth is the most primitive force in the universe; the principle of obtaining energy according to the unbalance of the earth's gravitational force is made of the solid material into a special shape that can be easily moved. It is developed, simply to say, to use the energy stored in the required storage, to change the potential energy of the solid, to convert the energy of the solid to the potential energy. It is known that all the energy, regardless of the way of obtaining, comes from the gravity of the earth and back to the earth's gravitational force, that is to say, it will return to the earth. The energy of the earth's gravitational force is stored and used again. It is an effective method to solve the energy storage. It is simple in structure, convenient in use, without pollution and large in capacity. It does not need two conversion efficiency. It has the characteristics of simple structure, convenient use and large capacity, and the most important point is high efficiency. Through mechanical transmission, energy can be stored directly without energy - storage - energy conversion, thus greatly reducing efficiency loss and improving efficiency. As an example of wind power generation, the energy storage process, only the mechanical energy produced by the wind generator is transmitted directly to the solid accumulator, and the energy storage is completed without the need to convert the mechanical energy of the wind turbine to the electric energy storage, its efficiency is higher than all the current accumulators.