Abstract: This paper elaborates the intelligent maintenance methods of secondary equipment combining internet of things and mobile internet technologies, based on the state-of-art operation and maintenance of secondary equipment. An overall structure of secondary equipment intelligent maintenance based on internet of things and mobile internet technologies is developed, to realize the goal of intelligent identification, visual display and intelligent operation and maintenance of the equipment. In terms of technical schemes, the focus of this paper falls on the introduction of key technologies, such as intelligent identification, knowledge push, loop visibility, maintenance decision-making, auxiliary safety measures, which can effectively solve various problems in practice. It could create favorable conditions for the intelligent and information-based operation and maintenance of the secondary equipment, and improve the field equipment management level as well as the efficiency of operation and maintenance.

Key words: intelligent substation, internet of things, mobile internet, secondary equipment, intelligent maintenance