考虑过程控制的钢铁工业负荷用能行为分析与功率特性建模
Process Controlling Based Energy Consumption Behavior Analysis and Power Characteristic Modeling for Iron and Steel Industry
-
摘要: 作为传统的高耗能用电大户,钢铁工业负荷的功率特性一直表现出强烈的波动性,对电网造成严重污染。电力系统以往的研究均未考虑钢铁工业的生产规律,无法解释功率波动的原因以及描述功率波动的特性,因而在含钢铁工业的小系统问题研究中,电力系统的适应性差。基于不同的冲击严重程度,将钢铁负荷分为持续型冲击负荷、间歇型冲击负荷和稳定负荷。首先,对于这三类负荷,结合其生产中的过程控制分析出了各类负荷的相关用能行为,建立不同类型负荷的功率特性时域模型。其次,将不同类型负荷模型进行时域叠加,得到钢铁工业总功率特性时域模型。最后,以国内某大型钢铁企业的实测数据进行算例分析,从时域、频域两个层次验证了建立的模型具有客观性和精确性,揭示了钢铁工业生产与功率波动之间的相互联系。Abstract: The iron and steel industry,as a traditional user of high energy consumption,its load always shows has the characteristic of strong power fluctuation that generates the serious pollution to power grid.The production law of iron and steel industry is not considered in the previous researches of power systems.The fluctuation cannot be explained and the power fluctuation characteristic of iron and steel industry cannot be described.Therefore,the adaptability is poor in the problem research of small systems with the iron and steel industry.According to the impact of different severity,the loads in iron and steel industry are divided into continuous impact load,intermittent impact load and stable load.Firstly,considering the process control of production,three kinds of energy cunsumption behaviors are analyzed and the time domain model of power characteristics is established.Secondly,the time domain model of total power characteristics for iron and steel industry is obtained by adding up the models created above.Finally,the measured data of a large-scale iron and steel enterprise in China is taken as an example to verify the objectivity and accuracy of the model established in time domain and frequency domain.The relationship between the production and power fluctuation of iron and steel industry is revealed.
下载:
