Turbine energy characteristic test is one of the important indices for water turbine performance evaluation. It is a concerned question that whether the operating characteristic curve transformed from the integrated characteristic curve of turbine model through analogical theory can reflect the capability of hydranlic turbine exactly. This paper introduces in detail the Liujiaxia before and after the No. 5 generator unit to expand the research situation of hydraulic turbine efficiency test absolutely including test method

standard and measurement parameters

the error analysis

and test data collection and analysis

and the turbine power characteristics of before and after to expand through the contrast analysis. The result to improve the safe and economic operation of power plant and the entire power grid has a certain reference value.