| 摘要 |
A coal power station operated using the combined gas turbine-steam turbine process, comprising a gas turbine plant and a steam turbine plant with a steam generator, a furnace and a steam turbine and for which coal is partly gasified in a coal gasification installation, the fuel gas produced is supplied to the gas turbine and the residual coke to the furnace of the steam generator, wherein the control of power output between full load and part load is performed by increasing the proportion of the total power output of the power station provided by the gas turbine plant and the degree of gasification in the coal gasification installation from full load to part load, the amount of fuel gas produced being adjusted according to the power requirement of the gas turbine plant and the proportion of residual coke being reduced according to the power requirement of the steam turbine, while decreasing the amount of coal supplied overall. In this manner a decrease in efficiency at part load can be reduced.
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