The importance of the development of wind energy has indisputable that a large-scale wind energy development must first resolve a series of key scientific issues. The importance of the development of wind energy has indisputable that a large-scale wind energy development must first resolve a series of key scientific issues.
Deputy Director of the National Climate Center, China Meteorological Administration, solar wind energy resource assessment and research fellow at Rayong, director of the Center of Atmospheric Physics, Chinese Academy of Sciences researcher at the Institute of Hu in the non-acceptance of the "Science Times" interview, emphasized the same point of view.
In that case, how wind energy resource development and atmospheric sciences which faces the key scientific problems?
Extreme weather on the impact of wind power development
"In 2003 on the 13th typhoon ‘cuckoo’, in 2006 on the 1st of Typhoon ‘pearl’ and No. 8 typhoon ‘Saomai’ were the result of Shanwei in Guangdong Red Bay wind farm, the South Australian wind farm Cangnan in Zhejiang Province and the Cape mountain-top electric fan of the serious Damage. "Talking about extreme weather and climate on the impact of wind power resources development, Rayong, said that in the past, in the design of wind power, on the impact of extreme weather and climate much about, for example, on the southeast coast of the typhoon, how strong On how much wind power. These issues have now become a wind energy resource development must first resolve the key issues, in particular, have to consider extreme weather or weather disasters, such as the strong sandstorm, strong wind, strong typhoons, ice, lightning, and so on.
Similarly, non-Hu pointed out how extreme weather conditions to guide the construction of wind power and layout of the macro-key areas, the scientific assessment of how different parts of the wind farm construction climate risk (mainly as a result of extreme weather conditions of wind power damage probability) is At present, the development of wind energy to the important scientific issues. For example, tropical cyclones, tornadoes, and the outbreak of the extratropical cyclone, low temperature, storm surge, sea ice, and other adverse weather conditions seriously affected the safety of wind power operation, in which the impact of tropical cyclone is the worst.
Non-Hu, for example, at present, the atmospheric boundary layer of air in a high range of tropical cyclone gas properties is still a lack of in-depth understanding, not for coastal and offshore wind farm designed to provide reliable aerodynamic parameters, wind farm planning and construction of a lack of climate Based on risk analysis.
"In the global climate change, background, only when the scientific understanding of China’s wind energy resources in the past, the causes of change in truth, and possible future changes make more accurate predictions on the basis of wind energy resources in order to achieve China’s largest The scale of sustainable development and utilization of wind power for the distribution of macro-and micro-site to provide a scientific basis. For example, China’s wind energy resources in the past is how to change? Future trends in the evolution of how? Whether the sustainable use? "Hu said non.
Wind resource monitoring and forecasting system
Due to the extensive use of wind energy, wind power more and more enterprises need accurate forecasting service. Wind power business-to-short-term energy demand is forecast: the need for generating capacity, rather than forecasting the forecast wind speed; released a day ahead of schedule 36 to 48 hours by the time forecasting; credibility of the forecasts given; a few days in advance of the medium-term forecast of Planning and management is very important to maintain.
"Today’s weather and climate models are basically not on the scale of wind generators speed distribution to the forecast fine." Non-Hu said that building large-scale wind farm to be built to increase wind power wind power level of short-term forecasting.
Rayong also pointed out that the power grid because of scheduling needs, wind power is estimated that the Internet needs of its generating capacity. In this regard, China’s current wind forecasts are mainly based on local weather conditions to carry out a number of wind power forecasting. In June 2006, the China Meteorological Administration set up solar wind energy resource assessment center. The center has started to do some of the wind power forecasting. "We are two wind farm and co-operation for a number of wind power forecasting system for construction and development."
"But these are far from adequate, the current urgent need for the establishment of specialized services in the wind wind power to deploy the Internet wind resource monitoring and forecasting system." Rayong pointed out.
The establishment of wind energy resource assessment of the refinement of the model
"It’s like the development of mineral resources prospecting first, the development of wind generator resources must first find out where the wind, but wind energy and mineral resources, is not necessarily able to have the wind on the issue of wind energy." Non-Hu said that the need to establish An effective scientific methods detailed investigation of wind energy resources. These include the improvement of scientific methods and the development of international wind energy resource assessment of the existing theories and methods for the establishment of China in the climate and terrain characteristics of the wind energy resource assessment model of refinement.
From the perspective of atmospheric science, wind turbine is the main advantage of the surface layer of a stroke kinetic energy resources (wind turbine wheel does not generally a high degree of over 120 meters), it is necessary to learn more about Chinese fans in the range of high (120 meters) of the Wind energy resources is the number of total reserves, where China is rich in wind energy resources in the macro area.
Rayong will be introduced to the reporters, in the past, China’s wind energy resource assessment is mainly used in meteorological stations on the 10-meter high degree of conventional pilot and a small amount of wind measuring tower, the spatial distribution of meteorological stations by the density of the wind measurement tower a short sequence data China has not yet been established, as well as adapt to the characteristics of the monsoon climate and terrain characteristics of the fine theories and methods to assess factors such as the restrictions can not be accurately given a high degree of fan on the wind energy resources as well as the total reserves of fine (up to 1 kilometer horizontal resolution, vertical-resolved Rate of 10 meters; with) the distribution of the region. Therefore, in order to achieve China’s large-scale wind energy resources for sustainable development and utilization, we must first learn more about Chinese fans on a high degree of wind energy resources in a specific location.
Rayong further stressed the need to wind energy resources in the macro-rich area of science to guide the micro-site wind power, China needs to establish appropriate characteristics of the monsoon climate and terrain characteristics of the micro-site model of wind power, wind energy resources in order to achieve the precise assessment of , And the results can be better used in wind power in the design and construction.
In order to carry out wind energy resource assessment of the fine, but also for the dynamic design of wind power and wind power forecast to provide technical support, but also the need for wind power and small-scale fan-scale numerical model.
"In short, our aim is to achieve genuine multi-scale simulation of the wind and forecasting, that is what we have to overcome one of the key technical problems." Hu said non.
