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Behavior of Capstone and Honeywell Microturbine Generators During Load Changes Consultant Report

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Behavior of Capstone and Honeywell Microturbine Generators During Load Changes Consultant Report ( behavior-capstone-and-honeywell-microturbine-generators-duri )

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Behavior of Capstone and Honeywell Microturbine Generators During Load Changes Table 7. Shutdown Sequence for Capstone 28-kW MTG MTG State Time of Transition to Next State Events Unit on Trip Fuel off Cool down Spin down Turn off Unit off 14:46:09 14:46:15 14:46:30 14:56:21 14:56:35 14:56:46 Unit running Unit trip, start power ramp-down Shut off fuel to MTG, complete power ramp-down Cool down unit at 45,000 RPM Turbine spins down to stop Power to DC link and AC input off Unit stopped MTG start up was captured with data taken at two-second intervals. The complete start sequence from front panel initiation to full power output was two minutes and four seconds. Because the MTG had only been shut down a short time (about two minutes), the warm-up period might have been shorter than it would have been if the unit was cold at the start. The timing and sequence of the start are shown in Table 8 below. Table 8. Start-up Sequence for Capstone 28-kW MTG MTG State Unit off Spin unit Wait Fuel on Warm up Ramp Unit on 3.4.2 Honeywell Time of Transition to Next State 14:58:12 14:58:15 14:58:36 14:58:47 14:59:40 15:00:16 Events Unit stopped Power to DC link, spin turbine to 25,000 RPM Stabilize MTG Turn on fuel and ignite, ramp to 45,000 RPM Warm up MTG Ramp up power to full power Unit running From the graphs of the MTG output (Appendix C), turbine ramping times were determined. These times are shown in Table 9 below. 12

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