农村偏远地区梯级小水电站长期优化调度策略

Long Term Optimization Scheduling Strategy for Cascaded Small Hydropower Stations in Remote Rural Areas

为解决偏远农村附近梯级小水电站面临的经济效益少、调峰能力差、发电稳定低等复杂问题,提出一种改进蜜獾算法(Improved Honey Badger Algorithm, IHBA),在考虑上述问题和保证传统水力约束的同时加入迎峰度夏顶峰和自供区供电等特殊发电约束,进行多目标优化调度。首先,通过Fuch混沌映射进行初始化,保证初始解均匀分布。其次,在更新阶段引入黄金正弦、哈里斯鹰围攻和T分布扰动混合策略,增强寻优能力,提高搜索解的质量。然后,结合非支配排序和理想点法,解决多目标问题。最后,将IHBA应用于湖南某农村地区梯级小水电站调度中与实际结果进行比较。结果表明:从年发电量、保证出力和发电保证率3项指标综合考虑,所提方法能有效提高发电综合效益,且在改善自供区供电能力及迎峰度夏顶峰能力同时以抬高水头的形式增加上级水库型电站高效发电,减少下级径流式电站低效发电。

To solve the complex problems of low scheduling efficiency,poor peak shaving capacity,and low power generation stability faced by cascaded small hydropower stations near remote rural areas,an improved honey badger algorithm(IHBA)is proposed.While considering the above problems and ensuring traditional hydraulic constraints,special power generation constraints such as peak summer and self-supplied area power supply are considered,and multi-objective optimization scheduling is carried out in this research.Firstly,initialization is achieved through Fuch chaotic mapping to ensure a uniform distribution of initial solutions.Secondly,in the update stage,the Golden Sine,Harris Eagle Siege,and T-distribution perturbation strategies are introduced to enhance optimization ability and improve the quality of search solutions.Then,combining non-dominated sorting and the ideal point method to solve multi-objective problems.Finally,IHBA will be applied in the scheduling of cascaded small hydropower stations in a rural area of Hunan Province compared with the actual scheme for verification.The results show that considering the three indicators of annual power generation,guaranteed output,and power generation guarantee rate,the proposed method can effectively improve the comprehensive efficiency of power generation,and compared to actual scheduling,and it can improve the power supply capacity of the self-supply area and the ability to meet the summer peak during peak hours,while increasing the efficient power generation of upper-level reservoir type power stations by raising the water head,and reducing the inefficient power generation of lower-level runoff type power stations.