Turbine Operation (TO) case studies
Turbine Operation (TO) · Put your knowledge to work in context.
The Turbine Operation (TO) credential is a professional certification for people who run, monitor, and protect steam and gas turbine-driven equipment in power generation and industrial plants. It is aimed at operators, control-room staff, and technicians moving into turbine responsibilities, and it validates that a candidate can reason about turbine behaviour rather than simply memorise a checklist. The Turbine Operation (TO) case studies are 5 cases and about 2,829 words.
1Condenser Back-Pressure Excursion During Summer Peak Load
A 250 MW reheat steam turbine is running at 235 MW on a hot afternoon. Condenser vacuum has degraded from 5.5 kPa to 9.8 kPa absolute over four hours.
608 words, about 3 min2Lube Oil Pressure Decay After a Filter Swap
During a routine shift, maintenance changes the duplex lube oil filter on a 120 MW steam turbine while the unit runs at 95 MW. Within two minutes the operator sees bearing oil header pressure fall from 1.6 bar to 1.25 bar, bearing metal temperatures on the No.
604 words, about 3 min3Grid Frequency Drop and Load Rejection Response
A 400 MW combined-cycle steam turbine is operating at 360 MW when a large external generation loss causes grid frequency to fall to 49.3 Hz. The unit is on load control with a droop setting of 4 percent and a governor deadband of 0.05 Hz.
551 words, about 3 min4Cold Startup With Elevated Differential Expansion
A 150 MW steam turbine is being started cold after a 10-day outage. During the roll-off and low-speed warm-up, the operator sees the high-pressure rotor-to-casing differential expansion reach +4.2 mm against an alarm of +4.5 mm and a trip at +5.0 mm.
550 words, about 3 min5Generator Voltage and Reactive Power During Grid Disturbance
A 200 MW steam turbine generator is running at 180 MW and 0.95 power factor lagging when a transmission line outage causes system voltage to fall from 1.0 pu to 0.93 pu. The automatic voltage regulator is in automatic mode with a setpoint of 1.0 pu.
516 words, about 3 min