46
应用能源技术
2011年第10期（总第166期）
基于NWAPSO参数全局寻优的LS-SVM电站
风机性能预测朱予东，王星久，王天龙，胡佳琪
（华北电力大学电站设备状态监测与控制教育部重点实验室，河北保定071003）
摘要：风机的性能曲线是风机选型和优化运行的重要依据.通常该曲线通过试验试验数
据和性能图表上的数据进行曲线拟合获得.由于该曲线非线性很强，传统方法复杂昂责，而且拟合精度不高。针对以上不足，提出了一种基于非线性权重自适应粒子群优化(NWAPSO)参数全局寻优的最小二乘支持向量机(LS-SVM)风机性能预测方法。通过最小二乘支持向量机建模，并应用非线性权重自适应粒子群优化算法对模型参数进行全局寻优，得到具有较高精度的风机性能曲线。计算结果表明，根据本文方法建立的模型很简洁，只需要知道少量的训练样本就能建立，可以比较精确的预测风机性能，具有较显著的工程应用价值。
关键词：非线性权重自适应粒子群优化；最小二来支持向量机；风机；性能预测
中图分类号：TK414.2
3文章编号：10093230(2011)100046-03
文献标志码：B
PerformanceForecastintheFanofPowerStationwithLS-SVM
BasedonParameterOptimizationbyNWAPSO
ZHU Yu-dong, WANG Xing-jiu, WANG Tian-long, HU Jia-qi
(The Electric Power University Of North China, Key Laboratory of Condition Monitoring and ControlforPowerPlantEquipment,Ministry of Education,Baoding 071003,China)
Abstract: The performance curves of the fans are essential basis of type selection and operation optimization of fans, Generally, these curves are obtained by curve fitting with data from experiments or perfomance diagrams. Nevertheless, the curves are highly nonlinear, therefore, the traditional methods are expensive and the fitting accuracy is sketchy. In allusion to the sketchiness above, a new algorithm with the least squares support vector machine (LS-SVM) based on parameter optimization by adaptive particle swarm optimization algorithm based on nonlinear inertia weight (NWAPSO) is pointed out. The calculation model of the fan is set up based on the LS-SVM at first, the parameters of the model are then globally optimized with the NWAPSO, the perfomance curves of the fans are finally obtained comparatively accurately. The calculation result indicates that the model with LS-SVM based on parameter optimization by NWAPSO is pithily and can be set up with a small amount of train examples and the performance of the fan can be forecast accurately,the engineering value is remarkable.
Keywords:NWAPSO;LS-SVMFan;Performanceforecast
引言 0
随着我国投产的电站锅炉容量的不断增加，收稿日期：2011-09-05
修订日期：20110915
作者简介：王星久（1987-），男，华北电力大学能源与动力
工程学院硕士研究生，热能工程专业，研究方向为电站设备运行优化。
锅炉风机的尺寸和消耗的功率越来越大，对电站锅炉风机运行的安全可靠性和经济性的要求也越来越高。电厂在投产前或试运期间以及投运后，为进一步了解和掌握风机在实际锅炉风（烟）系统中运行的安全经济性，通过现场试验，一方面，验证风机自身特性是否达到合同要求外，另一方