一、引言近年来,随着小型水电站开发难度的增加和机电设备、原材料的涨价,小型水电站的投资也不断增长。单位千瓦投资由六十年代的1000元以下及七十年代到八十年代初的1000元左右,增长到现在的2000元左右。尤其是近几年,小型水电站的投资猛增,有的已接近3000元/千瓦。据河北省已建的16座装机容量1000千瓦以上水电站投资的统计,1980 I. INTRODUCTION In recent years, as the difficulty of developing small-scale hydropower stations has increased and the prices of electromechanical equipment and raw materials have risen, the investment in small hydropower plants has also been on the rise. The investment in units of kilowatts from 1,000 yuan in the 1960s and the seventies to the early eighties about 1,000 yuan, up to now 2,000 yuan. Especially in recent years, investment in small-scale hydropower plants soared, and some were close to 3,000 yuan / kW. According to the statistics of 16 hydropower stations with installed capacity of more than 1000 kilowatts in Hebei Province in 1980,