Title of article :
Solid oxide fuel cell architecture and system design for secure power on an unstable grid
Author/Authors :
Susan Krumdieck، نويسنده , , Shannon Page، نويسنده , , Simon Round، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
Pages :
10
From page :
189
To page :
198
Abstract :
In a power grid with significant components of distributed generation and insufficient spinning reserve, the quality of delivered power may not meet the requirements of advanced manufacturing. A system design for power quality security which uses solid oxide fuel cell (SOFC) technology is described. Critical parameters for system performance are continuous supply voltage at the nominal voltage and frequency. The grid chosen for this study has significant voltage fluctuations and periodic voltage drops and surges, including total power loss. A supply of methane from a sewer sludge digester is scrubbed of CO2 and used for continuous standby operation, with excess stored to enable 8 h operation of an uninterruptible power supply (UPS). The system employs a modular, thermally coupled, SOFC architecture that includes steam reforming of the methane fuel, a rectifier, power controls, and control system. Continuous operation of a 125 kW tubular SOFC stack maintains operating temperature and steam for fuel reforming in a secondary SOFC stack, by exhausting through it before a gas turbine expands the exhaust to supply the plant air and fuel compression. Modelling of the energy balance of the system demonstrates the standby and full power operating modes. The system is sized at 250 kW to supply secure power for a manufacturing facility.
Keywords :
Solid oxide fuel cell , power quality , Sustainable energy system , Unstable grid , Steam reforming , uninterruptible power supply
Journal title :
Journal of Power Sources
Serial Year :
2004
Journal title :
Journal of Power Sources
Record number :
444613
Link To Document :
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