High-voltage（HV）switchgear on-line monitoring technology in intelligent substation has been widely used. Through which a variety of running information of HV switchgear can be monitored

including SF6

arrester

circuit breaker

partial discharge and so on. However

at present this technology can only locally view the monitoring information of HV switchgear in substation

and the monitoring information cannot be remote shared. In this paper

the system based on the smart mobile phone terminals and the Android system

use of VPN technology

WEB server technology

4G/3G wireless network and database technology to achieve the monitoring of high-voltage switch phone monitoring information. This paper mainly completed the system design

Android version of the mobile phone terminal design

server design

and finally the system performances are validated by the left hydropower project of Xiangjiaba in the Three Gorges projects.