Remote SCADA System Based on 3G VPN Services for Secondary Pressurization Pump Station

Secondary pressurization pump station is vital for almost all water supply systems. Every water treatment plant which uses it must ensure its normal operation. The modern management of water treatment plants require the latest technologies in the field of remote control tools, which is a fundamental tool for automation and the remote management of systems used for public services and for the acquisition and supervisory of data taken from control equipment. For the purpose of realizing the remote control of Secondary pressurization pump station based on PLC via internet, the architecture and implementation of a remote SCADA system is presented, which combines computer network, PLC, WINCC and VPN technologies. The function, design and process of the system are described. Furthermore, the key points of design and implementation methods are presented, in both the server side and the controller side. The building of the remote SCADA system can reduce work hours and costs of fault diagnostics and recover, which is of great importance in the water supply system and other field of industrial process control.