Method for determining best setting value of chain furnace control system

Abstract

Disclosed is a method for determining a best setting value of a chain furnace control system. The device is characterized by comprising steps of determining a plurality of setting value combinations of steam pressure, the boiler level, the hearth negative pressure, the fume oxygen content and the fume discharging temperature in accordance with experience; sequentially placing the setting value combinations to the chain furnace control system, and obtaining the coal consumption, the water consumption, the electricity consumption and the generated steam quantity by using all monitoring points; calculating the tons of steam coal consumption, tons of steam water consumption, tons of steam power consumption and the production cost corresponding the setting value combinations, regarding the reciprocal value of the weighted sum of the production cost, the steam pressure and the fume discharging temperature, establishing the full-efficiency module, finding a solution, obtaining the detection number corresponding to samples, and regarding the samples corresponding to non-negative detection number as the Data Envelopment Analysis (DEA) validness; and substituting the non-negative detection number to the full-efficiency module, finding the efficiency values corresponding to DEA effective samples, wherein the setting value combinations corresponding to DEA effective samples of high effective values are the best setting value of the steam pressure, the boiler level, the hearth negative pressure, the fume oxygen content and the fume discharging temperature.

Description

technical field [0001] The invention relates to the technical field of chain furnace control, and relates to a method for determining an optimal setting value of a chain furnace control system. Background technique [0002] The chain furnace is a layer-fired furnace with a very high degree of mechanization. Because of its stable combustion conditions, high thermal efficiency, convenient operation, low labor intensity, and low smoke and dust emissions, it is the most widely used type of furnace in industrial boilers. . However, the automation degree of the existing chain furnace is generally low, and it is basically in the state of manual control by the operator. When an abnormal situation occurs in the system, the control parameters cannot be adjusted in time, which will easily cause production accidents. Moreover, the chain furnace is a multi-variable system, which has the characteristics of nonlinearity, time-varying, large delay and strong coupling. It is difficult to es...

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Problems solved by technology

Neither of them has tested the various operating parameters of the chain furnace, and cannot realize the economical, energy-saving, safe and reliable operation of the chain furnace as a whole.

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