Ideally, SCADA system of high and low voltage switchgear cabinet should support remote centralized management, support local HMI, do not need to install any system, support WEB configuration to view state data information, and with the replacement of switchgear equipment in intelligent power station, SCADA background system should be like the cloud platform of the Internet of things, support object model, compatible upward and forward. It can be compatible with all kinds of integrated intelligent terminals and acquisition terminal devices in the future, and more refined power energy monitoring information. WEB server is embedded in Edge computing communication gateway. After accessing the LAN of gateway directly through mobile phone PAD, information of various collection and monitoring points of switchgear can be queried anytime and anywhere based on WEB configuration, which can be viewed on-site or sent to SCADA or remote cloud platform.

The previous SCADA system is realized by communication preprocessor (gateway) and background machine. The system deployment is complicated, involving server, engineer station, IO communication, operating system, etc., and it is difficult to upgrade. Due to the upgrading of the operating system and system hardware, the configuration software is upgraded once every five years on average and one version every two years on average. It is difficult to support WEB. Due to the limitation of architecture, the system can only support Web by means of additional functions, which is low system efficiency. Application integration is difficult. SCADA or HMI software can only be independent systems, and integration can only be carried out through controls or other forms, and cannot be integrated with the management system into a unified platform.

At present, most gateways belong to embedded configuration transparent gateway (DTU), which mainly realizes the data acquisition of instrumentation devices or third-party devices, converts it to another protocol such as 104 protocol, and then forwards it to the upper level for processing. The functions of gateways are quite limited. At the same time, with the upgrading of gateway hardware, the performance is greatly improved, and there are many mass-produced and mature products. You can choose Trumpchi universal communication gateway hardware platform for customized development and application, and add the functions of the Internet of Things on the gateway. For example, MQTT is adopted to upload data to the cloud platform, WEB server is added in the gateway, the latest HTML5 and SVG technology is adopted in web design, the data collected in real time in the gateway is periodically stored to generate the historical database, and then the open source grafana program is used to display the historical database. The newly designed WEB gateway is a gateway with automation function. The main advantages of using WEB gateway are: cross-platform. Mobile phones, tablets and computers can monitor the system without the need for terminal APP development; Thin client. Solve the hardware purchase cost problem; It can be virtualized. Solve the problem of maximum server utilization; Low cost. Transformation users do not have to consider computer procurement costs; Humanize. IT engineers are free to develop any interface monitoring platform they want; Automation engineers can easily learn to operate in a short time.