火力发电厂负荷优化分配和循环水系统优化运行的研究毕业论文.doc

PAGE 摘 要 课题以电厂负荷优化分配和循环水系统优化运行数学模型的建立、优化算法的选择、基于运行数据分析设备性能特性的研究、开发具有分析运行数据能力的优化运行决策支持软件为主线展开。 首先研究了电厂根据调度负荷曲线优化分配数学模型和实时负荷分配的数学模型，采用动态规划法求解；以及循环水系统优化运行的数学模型，采用直接枚举法求解。 根据数学模型，对一台1００ＭＷ级机组循环水系统进行了优化计算，得出的操作建议与原来操作进行了比较，能产生较好的经济效益。 对一1００ＭＷ机组的优化计算结果与实际运行数据比较，发现由于设备性能的改变使得原先的优化结果变得并非最优，得出基于设计曲线和试验方式等获得设备性能的优化计算结果会随着设备性能变化而出现与实际最优不符的情况。因此研究了采用机组实际运行数据分析获得的方法，采用加权平均方法从数据库大量记录中提取性能数据。　特别在循环水系统性能数据获得方面，将凝汽器、管路、循环泵综合在一起考虑，这种类似试验的方法，考察它们整体的输入输出特性，简化了问题。 关键词： 负荷分配 ； 数据开采 ； 优化运行 ABSTRACT The subject in order to optimize the power plant load distribution and optimal operation of circulating water system set up the mathematical model, optimization selection algorithm, running through the analysis of data, research equipment performance characteristics. The development of analytical running data capacity to optimize decision support software to run the main line to start. Initially on the plant in accordance with scheduling load curve Optimize distribution mathematical models and real-time mathematical model of load distribution, using dynamic programming method to find the results; and optimal operation of circulating water system mathematical model, using the direct enumeration method to find the results. According to mathematical model of a 300MW generating units circulating water system is optimized calculation, the operation of the proposed operation to compare with the original, can produce better economic benefits. Optimization of a 300MW unit calculation results with the actual operation data compared because of changes in equipment performance, the original optimization results are not optimal. Draw a conclusion, using the design curve and experimental methods to obtain the optimal device performance results, along with changes in equipment performance does not conform to the actual optimal situation. Therefore, the study using analysis of actual operating data to obtain conclusions methods, using the weighted average method, a large number of performance