Coal-fired unit maximum power generation load data processing method based on coal quality moisture content

Abstract

The invention discloses a coal-fired set largest power generation load data processing method based on coal moisture. The method comprises steps that lab test analysis on incoming coal moisture of a coal pulverizer is carried out; a largest output of the coal pulverizer under reference moisture and ventilation resistance of the coal pulverizer under the largest output are queried; a largest grinding output of the coal pulverizer is determined according to the largest output under the coal moisture and the reference moisture of the coal pulverizer; a largest drying output of the coal pulverizer is determined according to inlet-outlet pressure difference of the coal pulverizer and the ventilation resistance of the coal pulverizer under the largest output; the smaller one of the largest grinding output of the coal pulverizer and the largest drying out of the coal pulverizer is selected as the largest output of the coal pulverizer; all the largest outputs of the coal pulverizer are gathered; a largest power generation load of the set is determined according to set equivalent load coal feeding amount and all the largest outputs of the coal pulverizer. Through the method, timely forecast of the largest output of the coal pulverizer and an adjustable set output can be realized, electric power scheduling operation staff are facilitated to timely master power generation capability change situations of sets in a whole province, and thereby safe, economical and high-quality power grid operation is guaranteed.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a data processing method for the maximum power generation load of a coal-fired unit based on coal quality and water content. Background technique [0002] In recent years, the demand for domestic electricity has been strong, and the consumption of thermal coal has continued to grow. As a large coal-consuming power plant, the supply of thermal coal has become increasingly tight. The supply of thermal coal has changed from a buyer's market in the past to a seller's market. Due to the destruction of the supply and demand balance of thermal coal resources, power generation companies have increasingly diversified thermal coal supply, and the fluctuation of thermal coal quality has increased. The coal types used by most power plants are quite different from the boiler design coal types, resulting in deviations in the boiler operating status. The design value has brought a series ...

AI Technical Summary

Problems solved by technology

Due to the destruction of the supply and demand balance of thermal coal resources, power generation companies have increasingly diversified thermal coal supply, and the fluctuation of thermal coal quality has increased. The coal types used by most power plants are quite different from the boiler design coal types, resulting in deviations in the boiler operating status. The design value has brought a series of adverse effects on the safety and economy of boiler combustion, and the resulting equipment defects have also increased significantly. The main effects are roughly in the following aspects: (1) The output of the boiler decreases, and the unit cannot be fully powered; (2) Boiler efficiency decreases and coal consumption for power generation increases; (3) Coal types change and coal quality deteriorates, which increases fuel oil consumption in power plants; (4) Furnace slagging and heating surfaces overheat; (5) Fuel costs and power generation costs Increase

[0003] At present, regarding the coal quality status of coal-fired units, the power dispatching department basically relies on power generation companies to report on their own, unable to accurately understand the changes in the power generation capacity of units in the province in real time, and unable to ensure safe and high-quality operation of the power grid