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一、前言减轻设备重量,既能降低造价,还可使电机制造厂得以增大机组容量。10至16极的水轮发电机,容量从200兆伏安起,采用直接水冷是有利的。而复杂的绕组制造和试验所带来的额外费用,正如同必要的净水设备那样,与节约多余的机组费用相比,就显得微不足道。而且,所显示出的降低温升的优点,就好象电机具有电抗计算值小和必要时也具有惯性矩计算值小的优点一样。因此,在奥地利德拉瓦河电力股份公司的马尔塔一级水电厂的发电机,同伏拉勃格第三公司的罗都台二级水电厂和梯罗勒水电公司赛尔兰·西尔茨梯级的末级水电厂的发电机一样,都采用定子绕组和转子绕组的直接水冷装置。这就
First, the preamble to reduce equipment weight, both to reduce costs, but also to enable the motor manufacturer to increase unit capacity. Hydroelectric turbines of 10 to 16 poles, with capacity starting from 200 MVA, are advantageous for direct water cooling. The extra cost of manufacturing and testing complex windings, just as necessary for water purification equipment, is insignificant compared with saving the extra unit costs. Furthermore, the advantages shown for lowering the temperature rise are as if the motor had the advantage of having a small calculated reactance and, if necessary, a small calculated value of the moment of inertia. As a result, the generator at the Marta I hydropower plant in Draeger Electric AG, Austria, the Luodai II hydropower plant at Volaboh III and the Ceilán Silz Just like the generators in the cascaded final stage hydropower plants, direct-water-cooling units with stator windings and rotor windings are used. This is