(一) 前言龚咀水电站位于大渡河上,装机7台共70万kW,年发电量31～32亿kW·h,1978年全部建成投产;映秀湾水电站是岷江干流上的一座引水式电站,装机3台共13.5万kW,年发电量7亿kW·h左右,1972年全部建成投产。这两座水电站的建成,给严重缺电的四川省增加了83.5万kW的水电装机,使本省的水电比 (1) Foreword Gongzui Hydropower Station is located on the Dadu River with installed capacity of 7 sets of 700,000 kW and annual generating capacity of 3,1 to 3.2 billion kW · h, all of which were put into operation in 1978. Yingxiuwan Hydropower Station is a diversion power station on the mainstream of the Minjiang River, Installed 3 sets a total of 135,000 kW, annual generating capacity of 700 million kW · h or so, all completed and put into production in 1972. The completion of these two hydropower stations has increased the installed capacity of 835,000 kilowatts of hydropower to Sichuan Province, which has a serious power shortage, so that the province’s hydropower ratio