An online analysis method for unit adjustable output based on coal quality fluctuation state identification

Abstract

The invention discloses a set adjustable output online analysis method based on coal quality fluctuation state identification. The method comprises steps that 1), for all the multiple coal pulverizers in operation, the real-time operation monitoring data of each coal pulverizer and of the set of the coal pulverizers is acquired; 2), according to constraint conditions, overmeasure of each coal pulverizer is calculated; 3), the overmeasure of all the coal pulverizers is gathered to acquire an increasable set coal feeding quantity; and 4), an adjustable overmeasure scope of a set power generation load can be calculated in combination with the present operation data and present coal types. The method is advantaged in that the coal pulverizer overmeasure and the adjustable output of the set can be timely broadcast based on the real-time operation monitoring data of the coal pulverizers, the electric power scheduling operation personnel is facilitated to timely master set power generation capability change conditions, and electric power scheduling load control strategies are optimized.

Description

technical field [0001] The invention relates to a unit output analysis method, in particular to an on-line analysis method for unit adjustable output based on coal quality fluctuation state identification, belonging to the technical field of electric unit control. 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. Due to the destruction of the supply and demand balance of thermal coal resources, power generation companies have increasingly diversified thermal coal supply, resulting in increased fluctuations in thermal coal quality. Most power plants use coal types that differ greatly from boiler design coal types, resulting in boiler operating conditions. Deviation from the design value has brought a series of adverse effects on the safety and economy of boiler combustion, ...

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, resulting in increased fluctuations in thermal coal quality. Most power plants use coal types that differ greatly from boiler design coal types, resulting in boiler operating conditions. Deviation from 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 impacts are roughly in the following aspects: (1) The output of the boiler decreases, and the unit cannot run at full capacity; (2) The efficiency of the boiler decreases, and the coal consumption of power generation increases; (3) The variety of coal and the deterioration of coal quality increase the fuel consumption of the power plant; (4) Furnace slagging, heating surface overheating; (5) Fuel cost and power generation cost increase

[0003] At present, for the coal quality status of coal-fired units, the power dispatching department basically relies on power generation companies to report it themselves, and cannot accurately understand its operating status in real time

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