Lynchberg VFD & Pump Upgrades
Prime Consultant: KBR
E & I Engineer: Infrastructure Associates
Construction Budget: $26 Million
This project increased the capacity of the Coastal Water Authority’s Trinity River and Lynchburg Raw Water Pump Stations. The project upgraded the existing pumping system and added six new pumps, three to Trinity River Pump Station and two to Lynchburg Pump Station. The capacity of the source pump station (Trinity River) increased from 750 MGD to 1.1 BGD. The capacity of the local distribution pump station (Lynchburg) increased from 160 MGD to 260 MGD. In support of this capacity expansion, and for remote censoring and monitoring, the project included upgrades to the existing SCADA system.
Infrastructure Associates supported the design and construction management of the electrical power distribution and the instrumentation for all new pumps at both stations; local controls and instrumentation design; and, design for the upgrade to the Trinity River SCADA System. This SCADA system upgrade included provision for new equipment and fiber optic cabling. Infrastructure Associates provided remote monitoring and control capability for each pump station, as well as for the Coastal Water Authority.
Variable Frequency Drives specified for Lynchburg Station for this project are manufactured by Rockwell Automation and are a current-source drive with remote (outdoor) installed isolation transformers. This state of the art premium drive appeared to be the best candidate based on minimal impact its installation will inflict on existing condition of this pump station. The fact that isolation transformers can be installed remotely from drive itself resulted in minimal ventilation changes for the station. Furthermore; this particular drive has a reputation of solid performance, great reliability, and extensive hours of operation without mechanical/electronic failure.