为了提高变电站工程质量，适应变电站向智能化方向发展的要求，从工程设计的角度分析了变电站线缆敷设设计优化的若干问题，提出了设计优化方法。根据500 kV吴宁变电站的工程实践，分析了与设计优化相关的技术经济问题，验证了此设计优化方法的可行性。

In order to improve the construction quality and adapt to the development of intelligent substations, this paper analyzed several optimization problems for substation cable laying engineering from a design point of view, and put forward design optimization methods. Based on the engineering practice in Wuning 500 kV substation, the technical and economic issues of design optimization were investigated to verify the feasibility of design optimization methods.