基于支持向量机的多喷嘴斜击式水轮机性能预测研究.pdf

2013.№6 大 电 机 技 术 55 基于支持向量机的多喷嘴斜击式水轮机性能预测研究 1,2 朱 永 祥 （1. 南通航运职业技术学院轮机工程系，江苏 南通 226010 ； 2. 电力传输与功率变换控制教育部重点实验室（上海交通大学电气工程系），上海 200240 ） [摘 要] 为了能够提高多喷嘴斜击式水轮机性能预测的准确性，深入地分析了支持向量机在其中的应用。 首先，分析了支持向量机的理论基础 ；然后，讨论了基于灰色理论和支持向量机理论的预测机理；接着，分 析了多喷嘴斜击式水轮机的主要性能参数；最后，建立了预测模型，并且进行了预测分析 。预测结果表明基 于灰色理论支持向量机的预测模型在对多喷嘴斜击式水轮机进行性能预测时具有较好的预测精度和可靠性。 [关键词] 多喷嘴斜击式水轮机；支持向量机；性能预测 [中图分类号] TK730 [文献标识码] A [文章编号] 1000-3983(2013)06-0055-04 Study on the Performance Prediction of Multi-nozzle Turgo Impulse Turbines Based on Support Vector Machine 1,2 ZHU Yongxiang (1. Dept. of Marine Engineering, Nantong Vocational Technical Shipping College, Nantong 226010, China; 2. Key Laboratory of Conrtol of Power Transmission and Transformation, Ministry of Education Department of Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China) Abstract: In order to improve the accuracy of the performance prediction of Multi-nozzle turgo impulse turbine, the application of the support vector machine on it was studied in depth. Firstly, the theory basis of the support vector machine was analyzed; then the prediction rules of grain theory and the support vector machine was discussed, and then the main parameters of Multi-nozzle turgo impulse turbine were analyzed, and finally the prediction model was constructed, and the prediction analysis was carried out. Results showed that this method had better