[原创]大型电站燃煤锅炉运行优化技术研究及应用

电力baby · 发表于 2008-11-27 08:40:45

大型电站燃煤锅炉运行优化技术研究及应用<a href="http://film.eptchina.cn/">司风琪  周建新  徐治皋</a>（东南大学能源与环境学院，江苏南京，210096）摘要：提出了一种锅炉运行优化的系统框架，并着重对建模方法和优化算法进行了讨论。对常规在线支持向量机方法进行了改进，提出了新的样本剔除与学习规则，并与常规支持向量机模型相结合，形成了一种自适应建模方法，以适应煤质与锅炉实际运行工况的变化。对多目标优化算法进行讨论，并介绍了NSGA II遗传算法在锅炉优化中的应用。以某大型电站锅炉为对象，对本文方法进行了应用研究，所建模型的趋势分析和测试结果均表明了本文算法的正确性，所提出的优化模型以NOx为目标函数，综合考虑了锅炉运行经济性和安全性等约束条件，优化结果表明通过运行参数的优化调整可有效降低锅炉污染物的排放。关键词：<a href="http://bbs.eptchina.cn/index.asp">燃煤锅炉</a>；优化；模型；算法Study on Boiler Operation Optimization with Applications in Coal-fired Power PlantSi Feng-qi，Zhou Jian-xin，Xu Zhi-gao(School of Energy and Environment，Southeast University，Nanjing 210096, China) ABSTRACT：A new boiler operation optimization system, based on a new adaptive modeling method and genetic algorithm, was proposed in this paper. An improved support vector regression method was given with a modified criterion for selection of the unwanted trained sample while continuously training of prediction model. The improved method together with a conventional SVR model was used for adaptively prediction, such that the deviation caused from the variation of coal quality and different operating points can be effectively compensated. The multi-objective optimization algorithm, NAGA II, is included in the proposed optimization scheme. The scheme is further illustrated in a real process of a coal-fired boiler. The analysis and test results of the parametric models were presented. An optimization model, including objective function and constraints, was also given in this paper, and the optimization results revealed the validity of the proposed method.KEY WORDS：coal-fired boiler; optimization; model; algorithm

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