摘要
A燃煤电厂多种供热改造系统耦合运行,为提高供热系统节能效果,降低发电煤耗,通过EBSILON软件搭建理论模型。研究结果表明:按照余热利用占比由高到低分别为高背压供热方式、热泵供热方式、抽汽供热方式;为提高机组的余热利用占比,应优先提高高背压供热量;单机的可利用余热有限,超过余热量时,剩余热量需要采用抽汽供热方式,因此,随着总供热量增加,抽汽量、机组电功率和高背压供热占比都会出现拐点;通过对历史运行数据采用神经网络算法训练,获得供热量预测模型,结合EBSILON模型对电厂供热节能优化提出指导意见。
Multimode coupled heating system runs in coal-fired power plant A.In order to improve the energy-saving effect of the heating system and reduce the coal consumption of power generation,a theoretical model was built by EBSILON software.The research results showed that according to the proportion of waste heat utilization from high to low,it was divided into high back pressure heating mode,heat pump heating mode and extraction steam heating mode;in order to increase the proportion of waste heat utilization of the unit,priority should be given to increasing high back pressure heat supply;for a single machine,the available waste heat was limited,and when the available waste heat exceeded the residual heat,the remaining heat needs to be fully utilized for steam extraction heating,therefore,with the increase of total heat supply,the steam extraction volume,the electric power of the unit and the proportion of high back pressure heating will have an inflection point;the historical data was trained by the neural network method,the heat supply prediction model was obtained,and the guidance for the optimization of heating energy saving in the power plant was put forward by combining the EBSILON theoretical model.
作者
郭文华
GUO Wenhua(Shanxi Datang International Yungang Thermal Power Co.,Ltd.,Datong 037000,Shanxi,China)
出处
《能源与节能》
2024年第2期28-32,共5页
Energy and Energy Conservation
关键词
燃煤电厂
EBSILON软件
高背压
热泵
优化
coal fired power plant
EBSILON software
high back pressure
heat pump
optimization
