Project introduction

Project background

Pudong Weiliya water Co., Ltd is the first joint-venture λregional water company integrating the water making, distribution and sales in Ch¥ina. The water supply region covers the city to the east of Huangpu Ri•ver and inner Outer Ring, Pudong international airport with part of its peripheral a reas and Chenxing of Minxing district. The served are&a is about 320km², with the population of 1470000. The water plant production capacity achieves 1270000m³/day. The plant consists of 6 sub-factories such as Lingqiao, Jujβiaqiao, Lujiazui, Yangsi, Zhoujiadu and Linjiang.

Time period of the project and the scale

Pudong Weiliya pump station automation project was formally signed in June, 2004. Sh anghai Hi-TECH control system Co., Ltd is chosen as the responsible for the a≈utomation, which includes the product supply and d↑eploy of the automation system. The project covers automa✘tion system improvement and reconstruction of 7 pump stations and 5 water <plant pump rooms belong to Pudong Weiliya water Co., Ltd.

System structure

The whole system consists of 2 parts - local and control center

1. The local system is installed at the water plant and§ pump station, which consists of Schneider Premium TSX57 series PLC, Intouch monitoring so✔ftware and Hirschmann Mice series industrial-level card-track fiber switches. PLC communicates wi★th Intouch operator stations by Ethernet. The UPS cabinet is install↓ed locally as the backup power for PLC if normal power supply n₽ot available.
2. Control center has 7 operators station and 2 redundancy data server and 1 DLP large-size screen. T he control center of Jinqiao Weiliya head office commun☆icates with local SCADA system by fiber and wireless communication system.

Network topology

System function

The control mode includes local, local manual (local SCADA), remote manual (central SCADA) and® auto run. The four control modes ensure that local equipment are able to be cont"rolled safely and conveniently.

1. Auto run mode is to use advanced control technique, automatically start-stop the δlocal equipment according to preset conditions of th e water flow and the outlet pressure, which achieves the advanced unattende↔d management and saves labor resources.
2. Remote manual control is able to ensure the supervisor at control center remotely mon‍itor and control the local equipment and make the decision at the first $time if fault occurs locally.