Method and system for evaluating power supply and heat supply coal consumption of coal-fired thermoelectric unit

The invention relates to a coal-fired thermoelectric unit power supply and heat supply coal consumption evaluation method and system. The method comprises the steps that first data, second data and third data are obtained respectively; the first data comprises a factory area power supply amount and a factory area heat supply amount; the second data comprises the main steam quantity of each boiler, the main steam enthalpy value of each boiler, the water supply quantity of each boiler and the water supply quantity enthalpy value of each boiler; the third data comprises the coal feeding amount of each boiler and the average low heating amount of the fuel; calculating the power supply quantity of each boiler according to the factory power supply quantity and the second data; the heat supply amount of each boiler is calculated according to the plant area heat supply amount and the second data; the heat supply ratio is calculated according to the plant area heat supply amount and the second data; calculating unit p