Toowoomba Water Pipeline & Pumpstation

For the Toowoomba Water Pipeline project we provided the following engineering services:

  • HV, LV and ELV installation verification
  • Pre-commissioning and commissioning
  • Designed all of the control system software and SCADA integration. Automation platforms included Schneider TSX PLC, Siemens S7 PLC, Citect SCADA, various Modbus/TCP and Modbus/RTU slaves, Siemens HV protection relays, GE Multilin motor protection relay.

The control system is responsible for the automatic control of a 400kW Low Voltage pump, and a 1650kW 3.3kV pump, both fed from variable speed drives. The 3.3kV variable speed drive has a synchronous transfer to mains power function to reduce energy losses. The system pumps at approximately 580L/s from Wivenhoe Dam to Lake Cressbrook, which supplies drinking water to the Toowoomba population of approximately 120,000.

Pipeline and Tank

Figure 1 - Pipeline and Tank

Water Pump

Figure 2 - Water Pump