西昌市东河水电站的720kW机组,因水轮机与发电机容量不匹配,泥沙磨损破坏严重,运行效率很低,为此,成都勘测设计院受电站委托,对水轮机转轮进行了技术改造。改型后的新转轮(混流式D_1=71cm),使水轮机与发电机容量匹配,能适应电站引用流量的情况,平均运行效率可提高4～6%。 Due to the incompatible capacity of turbines and generators, sediment damage is seriously damaged and operation efficiency is very low. To this end, commissioned by the power station, Chengdu Survey and Design Institute has carried out technological transformation on turbine runner. After the modification of the new runner (Francis D_1 = 71cm), the capacity of the turbine is matched with the generator to adapt to the case of the reference flow of the power plant. The average operating efficiency can be increased by 4 to 6%.