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排灌机械工程学报  2018, Vol. 36 Issue (4): 320-326    DOI: 10.3969/j.issn.1674-8530.16.0301
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基于模拟退火算法的水轮机导叶分段关闭规律优化
周天驰, 张健*, 俞晓东, 储善鹏
河海大学水利水电学院, 江苏 南京 210098
Optimizing the closure law of wicket gates in hydraulic turbine based on simulated annealing
ZHOU Tianchi, ZHANG Jian*, YU Xiaodong, CHU Shanpeng
College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, Jiangsu 210098, China
 全文: PDF (1571 KB)   HTML (1 KB)   输出: BibTeX | EndNote (RIS)      背景资料
摘要 为了解决水电站过渡过程中输水系统水锤压力和机组转速上升难以协调控制的问题,保证电站安全运行,建立了一种水轮机导叶关闭规律非线性优化模型,该优化模型可以调整各控制参数的重要程度并应用于多工况优化.基于水力瞬变计算的特征线法,应用模拟退火算法对该优化模型进行计算,寻找满足调节保证计算要求的较优关闭规律.结合工程实例,针对蜗壳末端最大压力和机组转速最大上升率2种控制工况,比较导叶一段直线关闭和二段折线关闭的数值计算结果,并应用模拟退火算法对折线关闭规律进行优化.使用优化后的关闭规律进行过渡过程计算,蜗壳末端最大压力、机组最大转速上升率和尾水管进口最小压力均满足调保计算要求,且安全裕量较大.结果表明,模拟退火算法可以快速优化导叶关闭规律,且算法稳定性较好,安全裕量分配合理,为类似工程的导叶关闭规律优化提供了新方法.
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周天驰
张健*
俞晓东
储善鹏
关键词水电站过渡过程   导叶关闭规律   模拟退火算法   调节保证计算   优化计算     
Abstract: A new optimization model was set up to solve the contradictions between water hammer pressure and turbine speed during the transient process in hydropower stations. The model can be applied to the multi-condition optimization and the parameters in it can be adjusted easily. Based on the cha-racteristic method, simulated annealing algorithm was applied to the optimization of the wicket gate closure law. In a practical case, two controlling conditions were selected in maximum volute pressure and maximum turbine speed and numerical caculation, and results of different closure laws were compared and analyzed. Then the two-segment closure law was optimized using simulated annealing algorithm. The maximum volute pressure, maximum turbine speed and minimum draft tube pressure met the design requirements and the safety margins was allocated reasonably. The results show that simulated annealing algorithm can quickly and stably optimize the wicket gate closure law, which provides a new method for closure law selection in similar hydropower stations.
Key wordstransient process of hydropower station   closure law of wicket gates   simulated annealing   guarantee calculation of regulation   optimization computation   
收稿日期: 2016-12-06;
基金资助:国家自然科学基金资助项目(51379064,51409087);江苏高校优势学科建设工程项目
引用本文:   
周天驰,张健*,俞晓东等. 基于模拟退火算法的水轮机导叶分段关闭规律优化[J]. 排灌机械工程学报, 2018, 36(4): 320-326.
ZHOU Tian-Chi,ZHANG Jian-*,YU Xiao-Dong et al. Optimizing the closure law of wicket gates in hydraulic turbine based on simulated annealing[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(4): 320-326.
 
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