An Online Energy Distribution Control Method for Improving Iron and Steel Energy Utilization

Abstract

The present invention is an online energy distribution control method for improving steel energy utilization, which belongs to the field of information technology. The present invention first obtains historical data of steel production, and uses the method of establishing a mathematical model to describe the distribution process of energy medium input in each process. Secondly, Determine the distribution plan for the input amount of energy media in each process in each time period. Finally, the staff controls the PC end of the energy center to allocate the energy media to each production process according to time periods to complete the production tasks; the present invention takes into account the impact of emergency orders. Add in the real-time changes in production status caused by factors such as the operating status of equipment and differences in workers' operating levels, as well as the consumption of primary energy and the generation of secondary energy in production, closely track real-time changes in the production environment, and achieve efficient use of energy. It improves energy utilization, reduces energy consumption, reduces emissions, reduces energy outsourcing costs and inventory costs, and ultimately reduces overall production costs.

Description

technical field [0001] The invention belongs to the field of information technology, and in particular relates to an online energy distribution control method for improving steel energy utilization. Background technique [0002] As a typical high-energy-consuming industry, the iron and steel industry accounts for about 15% of my country's total industrial energy consumption; the huge increase in steel demand drives up energy prices generally, and increases the proportion of energy costs in total production costs. Energy distribution control method to reduce energy cost has become one of the important means to improve energy utilization. [0003] In the energy system of iron and steel enterprises, the generation, consumption and recovery of nearly 20 energy media such as electricity, gas, natural gas, steam, water, oxygen and nitrogen occur simultaneously, and the production system and energy system are interconnected, mutually restricted and interacted; At present, an urgent...

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Problems solved by technology

[0003] In the energy system of iron and steel enterprises, the generation, consumption and recovery of nearly 20 energy media such as electricity, gas, natural gas, steam, water, oxygen and nitrogen occur simultaneously, and the production system and energy system are interconnected, mutually restricted and interacted; At present, an urgent problem that needs to be solved in the energy distribution control of iron and steel enterprises is: insufficient understanding of energy consumption laws and mechanisms, and lack of optimal allocation of energy media within the entire plant, resulting in low energy utilization and secondary energy such as by-product gas. The reason for this problem is as follows: in the traditional production organization, when the energy medium is allocated according to the production plan, the allocation is mainly for a single medium, such as gas system, electric power system, etc.; in actual In the energy system, there is a conversion relationship between different energy media. For example, coking, ironmaking, steelmaking, rolling and other processes consume primary energy (electricity, coal, natural gas, etc.) while producing secondary energy (such as coke oven gas , blast furnace gas, converter gas, steam, etc.), excess gas and steam can be used to generate electricity, etc.; unreasonable allocation of energy media within the plant will inevitably lead to energy dissipation and waste; currently an important measure of energy consumption in the steel industry The indicator is the comprehensive energy consumption per ton of steel. The energy consumption level of the domestic steel industry is much higher than that of developed countries such as the United States, Japan, and South Korea, and there is great potential for optimization.

[0004] The task of energy allocation control is to allocate energy for the production process in the entire planning period by considering the energy supply capacity, the demand of each process and the regeneration capacity of secondary energy in the production process; the ultimate goal of energy allocation control is to ensure the production tasks while To reduce the total production cost, how to comprehensively consider the consumption, recovery and distribution of energy in the whole production process is the key problem to be solved in energy distribution control; traditional energy distribution control methods, whether static or dynamic, assume that the parameters are known and It remains unchanged throughout the planning period. However, most actual production is random, and both the production plan and the workshop environment have time-varying characteristics, such as random failures of machines, temporary changes of production orders, and instability of manual operations. and environmental (such as temperature) factors, etc., make the energy demand change with time, and the traditional energy distribution control method can no longer meet the needs of actual production for energy saving and consumption reduction.

[0005] Existing energy distribution control methods adopt static or offline methods for distribution control of single or entire plant energy equipment / pipe network, and cannot track real-time changes in the production environment

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