PLC-Based Turbine Governor System

The governor system used by many pulp and paper facilities with steam power generation creates many challenges. Challenges such as inadequate response times; poor speed regulation; analog control drifting; high maintenance and support costs; expensive or unavailable parts; and extended lead times. Machine availability is affected and extended generator downtime may result. Governor replacement provides the solution to these problems. Advantages of upgrading to a PLC-based turbine governor system include: • Off-the-shelf control and hydraulic components • Governor algorithm contained in PLC-based regulating system • Governor system independent from lube oil system • Reliable hydraulic proportional valve replaces flapper nozzle system • User-friendly interface provides control and monitoring and extensive alarming and diagnostics • Open communication allows connection with existing mill distributed control system(DCS)