Tibet's wind power is promising

Tibet is one of the regions with a large national wind (17m/s). The duration of strong winds is long and basically coincides with the dry season in winter and spring. Wind energy resources are abundant. There are two main wind zones in Tibet: one in the northern Tibetan plateau, roughly along the Naqu-Ali Highway and the other in the eastern part of the valley between the Himalayas. In the region, the annual effective wind energy density is approximately the same as the annual effective wind hours. The northern Tibetan Plateau is the largest wind power area in the Tibet Autonomous Region. The general scope is: east to Andor, west to the north of Ali, and south to Gangdise and Nyainqentanglura. The average annual average wind energy density in the northern part of the mountain ranges from 130 to 200 w/m2, and the effective wind hours are over 4,000 hours; followed by the Himalayas, the annual average effective wind hours are between 3,500 and 4,004 hours. According to speculation, annual wind energy reserves in Tibet are 9.3 billion kWh, ranking seventh in the country. Wind energy in Tibet has the characteristics of long duration and wide distribution of wind. Except for the lack of wind energy resources in southeastern Tibet, most of the regions are wind-energy rich regions and available areas. The average annual gale days in the plateau area are as high as 100 to 150 days, and up to 200 days, 4 to 3 times more than in eastern China (5 to 25 days) at the same latitude.

Wind power technology matures
The type of wind power system. The wind power generation model is divided into grid-connected wind power and independent wind power, which are commonly referred to as small-sized wind turbines and large-sized wind turbines. Small-sized wind turbines refer to wind-powered wind turbines with storage capacity of less than 10 kW.

Grid-connected wind power system. The wind turbines of the grid-connected wind power system are directly connected to the grid. Because the output power of wind power is unstable, a certain backup load needs to be configured in the power grid system. In order to prevent the impact of wind power on the power grid, the installed capacity of wind farms should not exceed 5%-10% of the grid connected to the grid, which is an important constraint to the development of wind farms.

Independent wind power system. Such systems are mostly built in remote areas where the grid is not easy to reach. Due to the instability and randomness of the output power of wind power generation, other charging devices need to be configured to provide emergency power for lighting, broadcast communication, medical facilities, etc. when the turbine wind turbine cannot provide sufficient power. The battery is commonly used. When the wind turbine is in operation, a type of device provides electricity for the electricity device. At the same time, excess electricity is converted into direct current through the inverter device to charge the battery. The other type is that wind power cannot provide electricity. At that time, the battery provides power to the inverter and converts it to alternating current to provide power to the load. Wind power is the energy conversion from wind energy to mechanical energy to electrical energy. The development and selection of wind power conversion systems is an important part of wind power generation technology.

Significant effect of wind energy utilization

The use of wind energy in Tibet started earlier. In April 1982, the Nagqu Prefecture Science and Technology Commission introduced the first FD-4 2-kilowatt wind turbine from Inner Mongolia’s Shangdu Machine-Machine Plant. By 1983, Naqu had introduced 35 sets of wind turbines. In early 1984, Nagqu purchased 100 sets of FD2-100 watt wind turbines from Taiyuan 884 Plant in Shanxi Province, which were assembled at Hongqi Commune and Deji Commune of Naqu County at that time and built two demonstration villages for wind power generation.

In 1984, the state invested 2.32 million yuan, and built three wind energy test stations with a construction area of ​​1146.5 square meters in Nagqu. At the same time, other regions are also actively promoting wind power generation technology according to their own conditions. In Shigatse Prefecture, 72 wind turbine generators were imported from Inner Mongolia in 1986, and 102 wind turbines were imported from Henan Province in Cuomei County in the Shannan region in 1985; In 1990, 10 wind turbines were introduced, equivalent to 24.6 kilowatts. Except for 2 sets of 7.5 kilowatts of wind turbines being scrapped due to lack of technical management personnel, the remaining 8 sets of two types of wind turbines performed better; During the period, a 4-kilowatt wind/solar hybrid power station was built and put into operation in Nagye Township (now Zareng Town), Nagqu Prefecture; in 2002, Tibet implemented the “Transmitting Electricity to Township” project and built a total of 10 wind-solar hybrid power stations in Nagqu. The current operating condition is good. At present, the technology of wind turbines with a capacity of 100 to 1,000 watts is mature, and complementary solar power generation is widely used in Nagqu.

In the past 10 years, the wind power industry has developed rapidly. Wind power resources have received wide attention as one of the cheapest renewable energy sources. The "Renewable Energy Law" has established the strategic position of wind power generation and established a total target system.

Tibet is a region rich in wind energy, so it is particularly important for Tibet to develop wind power demonstration sites in Tibet. In the process of resolving Tibet’s electricity-free counties and villages without electricity, governments at all levels have accumulated a lot of experience in management and investment. The majority of engineering and technical personnel have also accumulated experience in building photovoltaic power stations or wind-solar hybrid power stations in alpine and high-altitude areas. A large number of management, operations and maintenance personnel have been trained at the local level. All this has laid the foundation for the demonstration of wind power and the delivery of electricity to the village, which has laid the basis for the implementation of the “Village Village Electricity” project in Tibet, which will drive the rapid development of wind power generation and solar power generation in Tibet.