Closed loop control of hydrogen cooling of an electric power...

Details Closed loop control of hydrogen cooling of an electric power... Closed loop control of hydrogen cooling of an electric power...

2008-09-19

2011-12-20

Zarroli, Michael (Department: 2839)

Prime-mover dynamo plants

Miscellaneous

Drive gearing

C322S020000

Reexamination Certificate

active

08080887

ABSTRACT:
A closed loop control system for controlling generator cooling pressure, purity and dew point at power plants with hydrogen cooled generators to achieve optimum efficiency. The present invention uses feedback from plant status monitoring software to dynamically control parameters such as hydrogen pressure, purity and dew point to achieve optimum efficiency and provide necessary reserve capacity. The hydrogen pressure setpoint can be manipulated based on plant conditions such as output voltage, MVAR reserve capacity, likelihood of increased demand and other parameters. In general, an attempt is made to lower the pressure setpoint to achieve efficiency. Margin is built in to account for time lag in raising hydrogen pressure in the case of increased demand.

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