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芬兰的水力资源,集中在7个水系的湖泊和河流上。全国河流水能蕴藏量估计为280亿度,可供开发水力资源130亿度/年,1972年已开发110亿度/年。芬兰的水力开发是梯级的,有调节的。由于气候和水文条件,依天然状态变化的水量对发电是不利的。芬兰有湖泊55,000个,面积31.600平方公里,总水量约2.030亿立方米;湖泊的能量蕴藏量为500亿度。规划有调节水库的能量为86亿度。因此,有45%的可开发能量可储于人工湖中。由于它是可以开发和易于调节的,所以芬兰的电能大部分是水电站发出的。本世纪初,采用水电站的开发方式仅为满足局部地区电力的需要。依玛曲的开发标志着芬兰水力发电的持续发展。20世纪40年代的早期阶段,在芬兰北方,已开始水能的开发,
Finland’s hydraulic resources are concentrated in lakes and rivers in seven river systems. The national water reserves of rivers are estimated to be 280 billion kWh, 13 billion kWh for developing water resources and 11 billion kWh per year in 1972. Hydropower development in Finland is a step-by-step adjustment. Due to climatic and hydrological conditions, the amount of water that changes in its natural state is detrimental to power generation. Finland has 55,000 lakes with an area of 31,600 square kilometers and a total water volume of about 203 billion cubic meters. The lake’s energy reserves are 50 billion kilowatt-hours. Planning to regulate the energy of the reservoir is 8.6 billion degrees. Therefore, 45% of the exploitable energy can be stored in artificial lakes. Since it is developable and easily adjustable, most of Finland’s electricity is sent by hydropower stations. The beginning of this century, the development of hydropower stations only to meet the needs of local power. The development of Imam marks the sustainable development of hydropower in Finland. In the early stages of the 1940s, hydropower development in northern Finland started,