System and method for operating a power plant

摘要

A system including a fuel-supply system including, an auxiliary-fuel-gas compressor configured to compress a fuel for use by a gas-turbine system, an expander configured to generate power by expanding an oxidant from the gas-turbine system, and a motor/generator configured to function in a motor mode and in a generator mode, wherein the motor/generator drives fuel compression with the auxiliary fuel-gas compressor in the motor mode, and the motor/generator generates power in the generator mode as the expander uses oxidant from the gas-turbine system to drive the motor/generator.

主权项

1. A system, comprising:
a fuel-supply system comprising:
a fuel-gas compressor-expander configured to operate in a compressor mode and in an expander mode, wherein the fuel-gas compressor-expander compresses fuel in the compressor mode, and the fuel-gas compressor-expander generates power in the expander mode using oxidant from a gas-turbine system; and a motor-generator configured to function in a motor mode and in a generator mode, wherein the motor-generator drives fuel compression with the fuel-gas compressor-expander in the motor mode, and the motor-generator generates power in the generator mode as the fuel-gas compressor-expander drives the motor-generator using oxidant from the gas-turbine system.