In order to satisfy the business requirements of power plant operation performance index system

the data middle platform based on data governance framework is developed. The content

framework design and application characteristics of data governance are discussed. Based on the real-time data governance platform

the construction scheme of power plant operation performance index system is discussed. Taking the operation performance management of coal mill group as an example

the disassembly and combination process of the coal mill performance index score construction is expounded. The application results show that

the score of the performance index can objectively reflect the energy saving and consumption reduction level of operators. The calculation logic of the index can also be used as the operation guideline to improve the operation level. The average monthly unit consumption of coal mill decreases significantly. Under the same working condition

the power consumption rate of coal mill decreases by about 0.1 percentage point

and the single consumption of coal mill decreases by 2～3 kW·h/t. The trend of staff performance score also reflects the regulation level of coal mill energy consumption of each duty.