阐述了变电数字化设计的概念，以及开展数字化设计的重要性和必要性。介绍了数字化设计在±400 kV拉萨换流站工程中的应用情况。通过各专业的数字化设计，提高了设计效率，提升了设计质量。在进行工程数字化设计的同时，基于数字化设计平台，初步实现了专业内的流程化设计和专业间配合等工作。通过拉萨换流站工程的数字化移交，展示了数字化设计应用的实际效果。

This paper introduced the definition of digital design in substations，as well as its importance and necessity. And the application of digital design in Lhasa ±400 kV converter station was described in details. We improved the efficiency and quality of design by digital design, as well as preliminarily implemented the flow design and corporation between different majors during the engineering digital design process based on the digital design platform. The effect of digital design was showed through the numerical handover in Lhasa converter station project.