The evaluation of the design and operation of the 400MW evaporative cooling hydrogenerator in LiJiaXia hydropower station

The 400MW evaporative cooling hydrogenerator in Lijiaxia hydropower station has been serving for more than 15 years. This paper gives a comprehensive evaluation of this unit from cooling mode selection, electrical magnetic scheme design, operating practice and temperature distribution. The application of the evaporative cooling technology to 400MW-grade hydrogenerator shows great advantages comparing with the same capacity air cooling units, which demonstrates the correct of design and the stability and safety of long-term operation.