Several problems occur in current benchmarking evalustion system of coal-fired units

such as the method is singleness

the coverage is not wide

the statistic data is duplicate and the index system is limited by energy efficiency. To solve these problems

a production synthetic benchmarking evalustion method was proposed

on the basis of the analytic hierarchy process and grey correlation analysis

after performing collection and analysis

reasonable classification and scientific selection for the production index datum. The analytic hierarchy process was used to determine the evaluation indexes and their weights of each layer

and the gray correlation method was adopted to determine the degree of correlation among the indexes. Finally

the comprehensive evaluation of each index of the unit was obtained. The application result shows that

this method is feasible and effective and the evaluated results can be used as a support neat in making scientific maintenance decisions.