Patent ID: 7997084

Claim:
A hybrid power system, comprising: a gasifying furnace that gasifies solid fuel or liquid fuel; a gas turbine that drives a turbine to generate power by using combustion gas generated by burning mixed gas of compressed air compressed in a compressor and as generated in the gasifying furnace in a combustor; a booster that boosts compressed air bled from the compressor, and feed the compressed air to the gasifying furnace; a bleed source valve that is provided in a bleed line between the compressor and the booster; an abnormality stop controller that stops the booster and the gas turbine, based on an opening angle of the bleed source valve or a bleed pressure on an upstream side of the bleed source valve an opening angle sensor that detects an opening angle of the bleed source valve; and an abnormality determining unit that determines whether the bleed source valve is abnormal, based on a difference between detected opening angle and an opening angle instruction value, wherein when the abnormality determining unit determines that the bleed source valve is abnormal, the abnormality stop controller stops the booster and sets a stop delay time based on a closing speed of the bleed source valve, and stops the gas turbine after the stop delay time elapses.