小水电设计经验点滴杨代斌，舒应光（潼南县水电局）１．主结线（１）两机一变式：对于只装两台机组、单机容量不超过４０００ｋｗ的电站，特别适宜采用两机一变式主结线（如图１）这种结线在潼南高肯调峰电站采用，主要优点是省去主变低压倒油断路器，不仅节约了一台开关... Little experience in design of small hydropower Yang Dai Bin, Shu Yinguang (Tongnan County Hydropower Bureau) 1. The main knot line (1) two machines a variant: For only two units installed, stand-alone capacity of not more than 4000kw power station, especially suitable for the use of two machines a main change in the main line (Figure 1) This junction in Tongnan High-Ken peak-conditioning plant, the main advantage is to save the main transformer low-pressure oil pouring circuit breaker, not only saves a switch ...