Abstract
The article is devoted to the analysis of the technological process of heat load control and cost-effective fuel combustion in furnaces of drum steam generators at a thermal power plant. The object of automation – boiler unit type “Е-75-3,9-440G” – is analyzed. The mathematical model of fuel and air supply system to the steam generator is developed according to installed equipment characteristics. The model’s parameters are calculated. The actuating element of the system is an electric single-turn mechanism designed to actuate shut-off and control valves in the fuel and air supply channels. Two-channel control system is synthetized for providing an optimal ratio of fuel and air consumption with oxygen content correction in the flue gases. The automatic control system model is realized in Matlab application package, Simulink programming environment. The achieved results show the right settings for cascade control system. In conclusion, an example of the necessary technical equipment complex is listed for technical implementation of the developed control system.
Highlights
In a rapidly growing economy, resource consumption is increasing every year
The increased demand for resources leads to an increase in their extraction from the subsoil [1], which leads to an increase in energy production and the accumulation of man-made waste [2]
It is necessary to find a balance between extracted resources, product quality, the amount of energy consumed, the amount of resources required for its production, etc
Summary
In a rapidly growing economy, resource consumption is increasing every year. It is necessary to gradually resolve the emerging issues of increasing the efficiency and environmental friendliness of production, which is inextricably linked with the use (disposal) of man-made waste [3, 4]. In these conditions, it is necessary to find a balance between extracted resources, product quality, the amount of energy consumed, the amount of resources required for its production, etc. When automating heat and power equipment with the help of control systems, the tasks of monitoring and regulating the parameters of the technological process are solved. The development of a multichannel control system for electric drives in the fuel supply circuit to the boiler at the CHPP as part of technical re-equipment to ensure economical fuel consumption and minimize energy losses is relevant
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