随着水库优化调度问题复杂度提升,传统优化方法求解耗时过长,研发高效短期发电调度方法对工程应用意义重大。为此,通过试验分析水库发电调度问题的凹凸性,证实水电站短期发电调度模型的目标函数在特定运行区间内具有近似凹函数特性,提出基于凹凸性分析耦合折半搜索的优化方法,并以万安水库为例展开研究。结果表明,该方法相比需5 min求解理论最优解的DP算法和2~3 h收敛的POA算法,计算时间仅1 s且可收敛到理论最优的90%~98%;经弃水修正与POA优化后,可收敛到理论最优解的98%以上,计算时间20~60 s
为水电站短期及实时调度提供了有效的技术支撑。
Abstract
关键词
Keywords
references
He, Zhongzheng,Wang, Chao,Wang, Yongqiang,Zhang, Hairong,Yin, Heng.An Efficient Optimization Method for Long-term Power Generation Scheduling of Hydropower Station: Improved Dynamic Programming with a Relaxation Strategy[J].Water Resources Management,2022.
Zhongzheng He,Jianzhong Zhou,Hui Qin,Benjun Jia,Feifei He,Guangbiao Liu,Kuaile Feng.A fast water level optimal control method based on two stage analysis for long term power generation scheduling of hydropower station[J].Energy,2020.