SOLAR THERMAL GAS TURBINE POWER PLANT

摘要

Provided is a solar thermal gas turbine power plant in which the thermal efficiency is improved by enabling power generation by a steam turbine even if the operation of a solar thermal gas turbine is stopped due to the reduction in the intensity of sunlight. The solar thermal gas turbine power plant is provided with a solar thermal gas turbine (GT) which is provided with a compressor (1), a heat receiver (2), and a turbine (3); an electric generator (4) which is driven by the solar thermal gas turbine (GT) to generate electricity; and a steam power generation cycle (20A) in which high temperature air discharged from the turbine (3) is introduced into a steam generator (21) and a steam turbine (22) which is driven by the steam generated by the steam generator (21) drives an electric generator (23) to generate electricity. A solar thermal steam generator (30) which generates steam by heating using heat collected by a light collector (H) is provided on the upstream of the steam turbine (22) in the steam power generation cycle (20A). The distribution ratio at which the sunlight collected by the light collector (H) is distributed to the heat receiver (2) and the solar thermal steam generator (30) is adjusted in accordance with the intensity of the sunlight.