Many devices are aging, and the electricity generated by wind power generation is not as stable as that of thermal power plants and hydropower stations, which is easy to cause local power grid collapse. While vigorously developing wind power base, if the investment in power grid is not increased, the regional power grid will be seriously threatened; Once there is a problem, it will cause a large-scale power outage, and the consequences will be unimaginable.
In addition to the aging of power grid equipment, power grid dispatching is also very difficult. "The establishment of 10 MW wind power base will definitely increase the power of regional power grid, which is a severe test for the power grid system." Jiang Jiuchun analyzed that the increase of electricity inevitably requires the perfect dispatch of electricity. "Electricity is a very special commodity, and it must be delivered immediately when it is produced. It can be said that production, circulation and consumption are almost simultaneous. The power grid construction can't keep up, and the generated electricity can't be sent out, resulting in the phenomenon of' nest electricity', and the power grid is overwhelmed and collapsed. "
Technical bottlenecks also constrain wind power generation in China. "In China's wind power equipment, the proportion of' Made in China' has exceeded 70%, but the key components in large-scale equipment are imported from abroad, and we are only in the research stage of related technologies." Jiang Jiuchun said.
Jiang Jiuchun introduced that all countries in the world have an unwritten knowledge that the proportion of wind power generation to total power generation cannot exceed 5%. Once this ratio is exceeded, the power grid may be unstable, although no country has ever had an incident of power grid collapse caused by wind power generation.
Among many countries that develop wind power generation, Denmark is a special case, with the total wind power generation accounting for 20%. Jiang Jiuchun said that this is because European countries' power grids are interconnected and well maintained, and Denmark's wind power generation technology is also in the leading position in the world, so this special case is not surprising.
"The establishment of a 10-kilowatt wind power base in Jiuquan will inevitably lead to a substantial increase in the unstable power of the regional power grid. Some thermal power plants should be built to control the unstable factors of wind power. China's wind power generation is less than 1% of the total electricity, and China is rich in wind energy resources. Therefore, the development of wind power generation is promising, but the practice of' eating fat' is not desirable. " Jiang Jiuchun said.