LIXuan,HOUJing-ming,TONGYu,et al.Optimization Design of Drainage Network Based on Surrogate Model Assisted Particle Swarm Optimization Algorithm[J].China Water & Wastewater,2022,38(17):117-124.
基于代理模型辅助PSO算法的排水管网优化设计
- Title:
- Optimization Design of Drainage Network Based on Surrogate Model Assisted Particle Swarm Optimization Algorithm
- 摘要:
- 近年来城市暴雨洪涝灾害日益严重,设计良好的排水管网则是缓解城市洪涝最为经济有效的方式之一。但目前排水管网一般采用经验方法进行设计,不仅设计成本较高,而且管网排水能力有限。基于此,利用程序将SWMM模型嵌入粒子群算法寻优过程,以管道溢流量最小为目标,并以经济成本和水力特性为约束条件建立优化模型;同时,为了克服粒子群算法最优解波动较大和计算效率较低问题,通过耦合Kriging模型,提出了一种基于在线代理模型辅助粒子群算法的排水管网优化设计方法。以西安市某排水分区为例进行验证,并与常规的设计方法进行对比,结果表明,所提出的方法可在满足约束条件下实现洪涝缓解效果的最大化,相比于规划设计方法,管道溢流量降低了33.35%。此外,与标准粒子群算法优化结果相比,平均计算时间减少了27.56%,且优化效果更为显著。
- Abstract:
- In recent years, urban flood disasters have become increasingly serious. A well-designed drainage network is one of the most economical and effective ways to alleviate urban floods. However, empirical methods are generally adopted to design the current drainage network, which not only has a high design cost, but also has limited drainage capacity. Therefore, SWMM was embedded into the optimization process of particle swarm algorithm by program modification, and an optimization model was established with economic cost and hydraulic characteristics as constraints to minimize the pipeline overflow. In addition, a drainage network optimization design method based on online surrogate model assisted particle swarm optimization algorithm was proposed by using coupling Kriging model to overcome the large fluctuation and low computational efficiency of the optimal solution of particle swarm optimization algorithm. The design method was verified in a drainage district in Xi’an and compared with the conventional design method. The proposed method maximized the flood mitigation effect under the constraints, and the pipeline overflow was reduced by 33.35% compared with the planning scheme.In addition, compared with the optimization results of the standard particle swarm optimization algorithm, the average computation time was reduced by 27.56%, and the optimization was more significant.
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