This paper addresses the problems of irregular operation of conventional substation in operation monitoring, operation and control, comprehensive information analysis, intelligent alarm, etc. A transparent operation and maintenance system of Smart Substation Automation Equipment (SSAE) is developed. This paper first divides the smart substation operation and maintenance system into on-site operation and maintenance and remote operation and maintenance to adapt to different scenarios. It refines the details of equipment operation and maintenance based on the information model. It standardizes the configuration of the substation monitoring system, network automation equipment and operating parameters, and configures their operation and maintenance. Integrated operation and maintenance tools are developed, and transparent operation and maintenance function modules are added to the wide-area operation and maintenance main station to realize integrated management and operation of switches, measurement and control devices and versions. This work is supported by National Natural Science Foundation of China (No. 61602251) and Science and Technology Project of State Grid Jiangsu Electric Power Co., Ltd. (No. J2019038).