摘要
为改善和声搜索算法在梯级水库群优化调度中的应用效果,提高模型的求解精度和效率,针对和声搜索算法(Harmony Search Algorithm,HSA)的初始和声记忆库分布不均及易陷入局部最优的缺陷,采用均匀设计的方法生成初始和声记忆库以增加其多样性和有效性,引入混沌序列来改善算法的全局搜索能力。对HSA进行改进后,将其应用于李仙江流域梯级水库群发电优化调度模型的求解。结果表明:改进和声搜索算法(Improved Harmony Search Algorithm,IHSA)所得系统总发电量比HSA提高了1.37%,比动态规划法(Dynamic Programming,DP)降低了0.22%;但计算时间仅为DP的8.22%。IHSA收敛速度较快,全局寻优能力更强,为梯级水库群发电优化调度模型求解提供了一条可行的途径。
Harmony Search Algorithm(HSA)has characteristics of uneven distribution of initial harmony memory and easily local optimality.In order to improve effect of harmony search algorithm(HSA)in optimal operation of cascade reservoir groups and enhance model accuracy and calculation efficiency,a uniform design method was used to generate initial memory.This method could increase the diversity and effectiveness of the initial memory.The Chaotic sequence was also introduced to improve the global search ability.This improved Harmony Search Algorithm(IHAS)was applied to solve the optimal operation model of cascade reservoirs in Lixian River basin.The results show that the total power generation based on IHAS was 1.37% higher than that of HSA,and only 0.22% lower than that of DP method,but the computational time of IHAS was only 8.22% of that of DP method.Additionally,IHSA had a faster convergence rate and a strong global search ability.All these advantages demonstrated that IHAS can provide a feasible way to solve the optimal operation model of power generation in cascade reservoirs systems.
作者
王丽萍
吴月秋
张验科
王渤权
WANG liping;WU Yueqiu;ZHANG Yanke;WANG Boquan(School of Water Resources and Hydropower Engineering,North China Electric Power University,Beijing 102206,China;Nanjing NARI Water Resources and Hydropower Technology Co.,Ltd,Nanjing 210000,China)
出处
《人民长江》
北大核心
2021年第2期192-196,共5页
Yangtze River
基金
国家自然科学基金项目(51709105)
中央高校基本科研业务费专项资金资助项目(2019MS031)。
关键词
发电优化调度
梯级水库群
和声搜索算法
均匀设计
混沌序列
power generation optimal operation
cascade reservoir groups
harmony search algorithm
uniform design
chaotic sequence
作者简介
王丽萍,女,教授,博士,主要从事水资源与能源科学、水资源经济与能源经济方面的研究。E-mail:lpwang@ncepu.edu.cn;通讯作者:张验科,男,副教授,博士,主要从事水资源与能源科学、风险管理与决策理论方面的研究。E-mail:ykzhang2008@163.com。
