Research Papers: Gas Turbines: Turbomachinery

Avoiding Compressor Surge During Emergency Shutdown Hybrid Turbine Systems

[+] Author and Article Information
Paolo Pezzini

Thermochemical Power Group (TPG) – DIME,
Università di Genova,
Genova, Italy
e-mail: paolo.pezzini@unige.it

David Tucker

National Energy Technology Laboratory,
Department of Energy,
Morgantown, WV 26507
e-mail: david.tucker@netl.doe.gov

Alberto Traverso

Thermochemical Power Group (TPG) – DIME,
Università di Genova,
Genova, Italy
e-mail: alberto.traverso@unige.it

Contributed by the Turbomachinery Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 1, 2013; final manuscript received July 2, 2013; published online August 30, 2013. Editor: David Wisler.

J. Eng. Gas Turbines Power 135(10), 102602 (Aug 30, 2013) (10 pages) Paper No: GTP-13-1216; doi: 10.1115/1.4025036 History: Received July 01, 2013; Revised July 02, 2013

A new emergency shutdown procedure for a direct-fired fuel cell turbine hybrid power system was evaluated using a hardware-based simulation of an integrated gasifier/fuel cell/turbine hybrid cycle (IGFC), implemented through the Hybrid Performance (Hyper) project at the National Energy Technology Laboratory, U.S. Department of Energy (NETL). The Hyper facility is designed to explore dynamic operation of hybrid systems and quantitatively characterize such transient behavior. It is possible to model, test, and evaluate the effects of different parameters on the design and operation of a gasifier/fuel cell/gas turbine hybrid system and provide a means of quantifying risk mitigation strategies. An open-loop system analysis regarding the dynamic effect of bleed air, cold air bypass, and load bank is presented in order to evaluate the combination of these three main actuators during emergency shutdown. In the previous Hybrid control system architecture, catastrophic compressor failures were observed when the fuel and load bank were cut off during emergency shutdown strategy. Improvements were achieved using a nonlinear fuel valve ramp down when the load bank was not operating. Experiments in load bank operation show compressor surge and stall after emergency shutdown activation. The difficulties in finding an optimal compressor and cathode mass flow for mitigation of surge and stall using these actuators are illustrated.

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Traverso, A., Tucker, D., and Haymes, C. L., 2011, “Preliminary Experimental Results of IGFC Operation Using Hardware Simulation,” ASME J. Eng. Gas Turbines Power, 134(7), p. 071701. [CrossRef]
Ferrari, L. M., Pascenti, M., Magistri, L., and Massardo, A. F., 2010, “Micro Gas Turbine Recuperator: Steady-State and Transient Experimental Investigation,” ASME J. Eng. Gas Turbines Power, 132(2), p. 022301. [CrossRef]
Tucker, D., Liese, E., and Gemmen, R., 2009, “Determination of the Operating Envelope for a Direct Fired Fuel Cell Turbine Hybrid Using Hardware Based Simulation,” International Colloquium on Environmentally Preferred Advanced Power Generation, Newport Beach, CA, February 10–12.
Tsai, A., Tucker, D., and Groves, C., 2010, “Improved Controller Performance of Selected Hybrid SOFC-GT Plant Signals Based on Practical Control Schemes,” ASME Turbo Expo 2010, Glasgow, UK, June 14-18, ASME Paper No. GT2010-22470. [CrossRef]
Ferrari, L. M., Pascenti, M., Bertone, R., and Magistri, L., 2009, “Hybrid Simulation Facility Based on Commercial 100 kWe Micro Gas Turbine,” ASME J. Fuel Cell Sci. Technol., 6(3), p. 031008. [CrossRef]
Li, Y., Weng, Y., and Weng, S., 2011, “Part-Load, Startup, and Shutdown Strategies of a Solid Oxide Fuel Cell-Gas Turbine Hybrid System,” Front. Energy, 5(2), pp. 181–194. [CrossRef]
ColomboK. E., Kharton, V. V., and Bolland, O., 2010, “Simulation of an Oxygen Membrane-Based Gas Turbine Power Plant: Dynamic Regimes With Operational and Material Constraints,” Energy Fuels, 24, pp. 590–608. [CrossRef]
White, R. C., and Kurz, R., 2006, “Surge Avoidance for Compressor System,” 35th Turbomachinery Symposium, Houston, TX, September 25–28, pp. 123–134.
Tucker, D., Lawson, L., and Gemmen, R., 2003, “Preliminary Results of a Cold Flow Test in a Fuel Cell Gas Turbine Hybrid Simulation Facility,” ASME Turbo Expo 2003, Atlanta, GA, June 16–19, ASME Paper No. GT2003-38460. [CrossRef]
Chorpening, B. T., Tucker, D., and Maley, M., 2005, “Sensors Applications for Advanced Fossil-Fuel Based Power Generation,” U.S. DOE Opportunity Announcement.
Greitzer, M. E., 1976, “Surge and Rotating Stall in Axial Flow Compressors Part I: Theoretical Compression System Model,” ASME J. Eng. Power, 98(2), pp. 190–198. [CrossRef]
Tucker, D., Lawson, L., and Gemmen, R., 2005, “Characterization of Air Flow Management and Control in a Fuel Cell Turbine Hybrid Power System Using Hardware Simulation,” ASME Power Conference 2005, Chicago, IL, April 5–7, ASME Paper No. PWR2005-50127. [CrossRef]


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Fig. 1

Flow diagram for the hybrid performance simulation facility at NETL

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Fig. 2

Emergency failure in previous shutdown operations

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Fig. 3

Fuel valve step down versus surge margin

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Fig. 4

Compressor map comparison

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Fig. 5

Surge margin and turbine speed comparison

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Fig. 6

Gas turbine speed nonlinear ramp down

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Fig. 7

Bleed air, cold air bypass closing action and load bank decreasing

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Fig. 8

Surge margin versus mass flow, pressure and load bank ramping down

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Fig. 9

Compressor map in bleed air operation

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Fig. 10

Bleed air closing versus surge margin, compressor mass flow and speed

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Fig. 11

Bleed air, cold air bypass unchanged, fuel flow and electric load ramp down

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Fig. 12

Compressor map in load transient

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Fig. 13

20 kW electric load step down

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Fig. 14

40% cold air bypass closing

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Fig. 15

Compressor map in cold air transient

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Fig. 16

40% cold air movement upward

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Fig. 17

Overall shutdown strategy

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Fig. 18

Compressor map during shutdown

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Fig. 19

Surge margin during shutdown



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