For the cooling system capacity of No4 main transformer in Jinmen thermal power plant being inefficient, through technical analysis, the design of new cooling system was put forward and the installation process was introduced.

• 摘要针对荆门热电厂4号主变冷却系统存在冷却容量不够等问题，进行了技术分析，提出了新冷却系统的设计并介绍了其安装过程。