Thermal power generating unit coal quality identification method and thermal power generating unit control method and system

Abstract

The invention discloses a coal quality identification method for a thermal power generating unit, which comprises the following steps of: firstly, obtaining a quantity value to be achieved by adjusting an intermediate variable of the unit, obtaining a total consumption difference of the unit according to the quantity value to be achieved by adjusting each intermediate variable of the unit, and then according to a pre-established consumption difference distribution model and the total consumption difference of the unit, obtaining the consumption difference allocated to each coal quality attribute, and further for each coal quality attribute of the unit coal, obtaining the quantity value of the coal quality attribute according to the consumption difference allocated to the coal quality attribute and the benchmark value of the coal quality attribute so as to obtain the quantity value of each coal quality attribute of the unit. Coal quality information of unit fire coal is identified by analyzing the unit consumption difference, the integrity of the unit operation condition is considered, and the coal quality information obtained through analysis can directly guide combustion adjustment of a boiler and control over a thermal power unit. The invention further discloses a thermal power generating unit control method and system.

Description

technical field [0001] The invention relates to the technical field of intelligent control of thermal power plants, in particular to a coal quality identification method for thermal power units. The invention also relates to a thermal power unit control method and system. Background technique [0002] The specific combustion conditions of thermal power plant boilers are directly related to the quality of the coal used. For the current situation of "energy shortage, market coal, and planned electricity", most of the coal used in thermal power plants is of various types, and the quality of coal fluctuates greatly, and the phenomenon of coal blending and blending is common. The performance indicators of the coal used deviate greatly from the designed coal type. Therefore, it is necessary to conduct real-time online identification of the coal quality of thermal power units to guide the adjustment of boiler combustion and the coordinated control of thermal power units. However...

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Problems solved by technology

However, the existing coal quality identification methods for thermal power units have limitations, and the obtained results cannot be directly used to guide the combustion adjustment of boilers and the control of thermal power units

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