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1、New Energy Resources and electricity generation,Traditional energy and electricity generation,Although there are many different sources of energy available,more than three-quarters of the energy used in developed countries comes from oil,gas and coal.Currently the thermal power plants of our country
2、,which take up more than 70%of the installed capacity of Chinas electrical power system,use coal as fuel.,Existing energy,Existing power sources of energy are three kinds,namely,_ power,_power and _ power.With economic development,social progress,people put forward higher requirements of energy,Find
3、 new energy sources become an urgent issue facing humanity.,thermal,hydro,nuclear,The shortcomings of thermal power,Thermal power plants are those making use of fuels like coal,petroleum and natural gas.On the one hand the limited reserves of fossil fuels,the more burning,the less left,which is faci
4、ng the danger of depletion.It is estimated that worldwide oil depletion put another _ years.On the other hand burning fuel will emit _ and _,thereby causing the _ effect and _ rain,deterioration of global environment.,30,carbon dioxide,sulfur oxides,greenhouse,acid,The shortcomings of hytro-power,Wa
5、ter to drown large areas of land,may lead to _ destruction and if the large _ once collapse,the consequences would be disastrous.In addition,a countrys water resources are limited,but also by the impact of the season.,ecological,reservoirs,What do you know about new energy?,Wind power,Solar power,Ti
6、dal power,Wind energy,Wind power is the conversion of wind energy into a useful form of energy,such as using wind turbines to make electricity,wind mills for mechanical power,wind pumps for pumping water or drainage,or sails to propel ships.,发动机箱 Engine box 包含：变速箱 Transmission发电机 Generator 电子控制装置 El
7、ectronic control 偏航控制器 Yaw controller 制动装置 Brake Device,高空风能发电High-altitude wind power,发动机箱 Engine box变速箱 Transmission发电机 Generator 电子控制装置 Electronic control 偏航控制器 Yaw controller 制动装置 Brake Device,Phrase about wind power,风轮 wind rotor垂直轴风力机 vertical axis wind turbine 水平轴风力机 horizontal axis wind turb
8、ine风轮额定转速 rated turning speed of rotor 风轮最高转速 maximum turning speed of rotor 风轮扫掠面积 rotor swept area 风场电器设备 site electrical facilities,风力机 wind turbine 风电场 wind power station风力发电机组 wind turbine generator system风力机 vertical axis wind turbine风特性wind characteristic平均风速mean wind speed 下风向down wind 上风向 u
9、p wind 安全风速 survival wind speed 极端风速 extreme wind speed,Tower支撑转子和发动机箱，并将整个装置上升到更高位置，使叶片不会碰到地面,Rotor blade捕获风能并将其转换为转轴的转动能,Wind turbine compose of the head,swivel,rear wing and the blade风力发电机由机头、转体、尾翼、叶片组成。,叶片用来接受风力并通过机头转为电能；Blades to accept the wind into electricity through the nose 尾翼使叶片始终对着来风的方向从
10、而获得最大的风能；Tail toward make the blade to the wind direction,it is always to get the biggest wind energy 转体能使机头灵活地转动以实现尾翼调整方向的功能；Swivel head allows the flexibility to adjust the direction of rotation in order to achieve the function of tail,机头的转子是永磁体，定子绕组切割磁力线产生电能。Head of the rotor is permanent magnet,
11、the stator windings cutting magnetic lines to produce electricity.,机舱 Engine room 转子叶片 Rotor blade 轴心 Axis低速轴 The low speed shaft 齿轮箱 Gear box偏航装置 Yawing device电子控制器 Electronic controller液压系统 Hydraulic system发电机 Generator塔 Tower,风力发电机结构,史蒂夫索耶关于风能的发言,史蒂夫索耶：风能确是一种主要的供电技术，发展风能将使电力部门在十年内大大减少温室气体排放量。Stev
12、e Sawyer:Wind power is really the main supply side technology that can make a difference in the short term in the period between now and 2020,to reduce emissions in the power sector.,您正在收听到的是世界风能协会职员史蒂夫索耶的讲话。世界风能协会是国际风力发电产业的同行公会。索耶说，风能正得到日益广泛的应用。如今各国政府都在考虑如何以低能耗发电，同时减少温室气体排放，抵抗全球变暖。他说去年全球风力发电总量增加了40
13、%。Youre listening to Steve Sawyer of the Global Wind Energy Council,a trade association that represents the wind industry at the international level.Use of wind power is on the rise,Sawyer said.Governments around the world are considering how to generate more electricity and emit fewer of the greenh
14、ouse gases thought to be warming the planet.Sawyer said wind power production grew by 40 percent in 2009,across the globe,史蒂夫索耶：我觉得中美两国市场的迅猛增长是近几年来最明显的趋势。中国已成为市场增长率最高的国家。今年它将成为世界上最大的电力消费国。而美国去年刚成为全球最大的电力市场。Steve Sawyer:The biggest trend,I suppose,in the last few years is that,is the dramatic growth
15、in the markets in China and the United States.China has become the fastest growing market in the world by far.It would be the single largest market this year.And the United States just last year took over first place.,索耶表示，目前风力发电仅占美国电力市场的2%。随着电网升级，到2030年风能的市场份额将上升20%甚至更多。For the U.S.,Sawyer said,upg
16、rades to the electric grid could help raise wind powers share from about 2%of total electricity today to 20%or more,by the year 2030.史蒂夫索耶：我们国家拥有丰富的电力资源，从这个角度来看，供电是不成问题的。然而真正的挑战在于如何有效利用这些资源，充分保证电力市场的供应 Steve Sawyer:You could supply the whole country with electricity,no problem,in terms of the raw re
17、source.But we have to actually capture that and then get it to the markets.Thats the challenge.,Greater economic competitiveness and potential development Lower damage to the land and ecological condition.Less air pollution and less carbon emissions and less environmental costs.Wind power can be use
18、d for distributed generation,there is less risk of power generation facilities for they are not concentrated together.,经济竞争力和潜在能力的发展。土地和生态破坏减至最少。空气污染和碳排放等环境成本低。风能是分布式发电的，发电设施不是太大的风险集中。,One of the ecological problem brought by the Wind power generation is that wind turbine disturb the life of birds.T
19、he current solution is to generate electricity far away from the shore,power generation efficiency is high,but higher prices.In some areas,wind power bring low economical efficiency,in many areas there is unstable wind It needs a lot of land to build wind farms.Wind turbine noise is a big problem.,风力发电在生态上的问题是可能干扰鸟类。目前的解决办法是海岸电源。海上发电效率高，但价格更高。在一些地区，风力发电的经济性短缺，有许多地方的风是时断时续的。需要大量土地兴建风力发电场。风力涡轮噪声将是一个巨大的问题。,
