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众所周知,电力负荷在一天之内有很大的变幅,特别是在商业用电,市政生活用电比重大的地区,如一些大城市和工业区,白天高峰,夜间低谷,一周之间,季节之间,均有很大的差别。为了适应电力系统负荷增长和峰谷差增大的需要,国內外开展了抽水蓄能课题的研究,并且修建了许多抽水蓄能电站。抽水蓄能电站不能直接生产电能,它仅是一种能源的转换和储备措施,需要消耗电能,其总效率在65—75％之间,即通常所说的抽水用3度电换取2度
As we all know, there is a great change in the power load within a day, especially in areas such as commercial electricity and municipal electricity, such as some big cities and industrial areas, daytime troughs, night troughs, a week, seasons Between, are very different. In order to meet the need of power system load increase and peak-valley difference increase, researches on pumped storage have been carried out at home and abroad, and many pumped storage power stations have been built. Pumped storage power station can not directly produce electricity, it is only a kind of energy conversion and reserve measures, need to consume electricity, the total efficiency of 65-75%, which is commonly referred to as pumping with 3 degrees for 2 degrees