摘要
由凝汽器最佳真空原理入手,探讨了火电厂循环水系统的运行优化问题,对水量不可连续变化的单元制循环水系统提出了一种离散优化模型。以山东枣庄十里泉电厂300 MW机组为例,利用本模型对循环水系统进行了运行方式的优化研究,确定了机组在不同循环水温度、不同负荷下最经济的循环水泵运行组合方式,编制了循环水系统最优化运行工况图,为运行中实现指导循环水泵的科学经济调度提供了量的依据。效益分析表明,对于300MW机组,循环水系统离散优化可使电厂标准煤耗降低0.5-0.7g/(kW·h)。
Based on the turbine optimum vacuum theory, optimization operation in fired-coal power plants is studied. A discrete optimized model is proposed for circulating water system featuring non-continuous change of water flow rate. With the 300 MW power unit of Shiliquan Power Station as an example, the present model is used to study operation optimization in order to determine the most economical grouping mode of operation for the circulating water pumps at different circulation water temperature and at various loads of the power unit. The economic operation schemes are obtained. It is employed to regulate the operation of circulating water pumps and has obtained significant economic gains. A profit analysis indicates that for a 300 MW power unit it is possible to achieve a coal consumption saving of 0.5 - 0.7 g/ (kW·h).
出处
《电力科学与工程》
2005年第2期19-23,共5页
Electric Power Science and Engineering
关键词
循环水系统
离散优化
经济运行
circulating water system
discrete optimization
economic operation
