High-Capacity Water Treatment and Hydropower Generation
The City’s Water Treatment Plant is capable of producing 24 million gallons of water daily that meets or exceeds the Environmental Protection Agency and Washington Department of Health Drinking Water Standards. Water from the Mill Creek watershed is piped 14.5 miles to the City’s Water Treatment Plant where it is treated with UV disinfection and chlorine. All the water that passes through the Treatment Plant also passes through a hydropower generator which produces 13,500 megawatts of electricity annually. Revenue from the generated power is used to offset operation and maintenance costs.
Modernization of Aging Hydroelectric Control Systems
The original hydroelectric power system was installed in the 1980s using various independent controllers and measurement devices. The control system and mechanical controls were failing, and replacement parts and service were becoming very difficult to obtain. J-U-B’s Electrical Engineering Group provided electrical and control systems design and construction management services for this project that involved the replacement and modernization of the electrical and mechanical control system including:
-
A 2,060KW Ateliers Bouvier turbine / 2,500KW Louis Allis synchronous generator system using a microprocessor-based digital excitation system
-
An SEL-700G generator protection relay
-
Revisions to the Allen Bradley ControlLogix 5581E PLC and FactoryTalk-based SCADA system wiring and programming
-
Hydraulic control system component replacement
-
CT and PT replacements and reconfiguration
-
Replacement of a 15KV substation circuit breaker
-
Replacement of a motorized control valve operator
-
Generator building lighting upgrade and other incidental control and instrumentation upgrades
Click to View
Related Services
