Rockwell automation Plant PAx process automation system, optimises hydroelectric generation.

The Box Canyon Dam and its four hydroelectric generators have straddled a narrow section of Washington state’s second-largest river, ...

The Box Canyon Dam and its four hydroelectric generators have straddled a narrow section of Washington state’s second-largest river, the Pend Oreille (Pond-er-ray).The state public utility built and operates the 80-megawatt-capacity hydro plant, which today provides renewable energy to 8,500 customers. This public utility company implemented Rockwell automations plant PAx automation systems. Most major hydroelectric plants generate electricity by systematically controlling the release of stored water behind a dam. However the box Canyon is a run-of-the-river hydro plant, meaning the flow of water from upstream sources drives the submerged turbines. Control is critical at the Box Canyon to maintain the delicate balance between optimal power generation and the river’s natural ecosystem. Seasonal rains, melting snowpack and other natural forces put pressure on the Box Canyon. However the public utility company had to ensure the state protected the lands behind the box canyon, as they were natures treasures. Rockwells PAx Plant automation system effectively monitored and controlled the turbine and generator systems to improve plant efficiency. As a result troubleshooting became easier as operators could detect and correct problems earlier. This remote monitoring control also reduced manpower and travel costs considerably.