Constant-pressure air energy storage and release system and method adapting to instable power supply side

The invention discloses a constant-pressure air energy storage and release system and method adapting to an instable power supply side. The system can automatically adapt to instable wind/light powersupply fluctuation, and remaining electricity is fully consumed in the electricity utilization trough period. When the renewable energy remaining electricity power sufficiently drives a blade type gascompressor to work to generate gas at set pressure, the system gets into a constant-pressure gas storage allowable working condition, the remaining electricity is converted into air pressure potential energy and compression heat energy, and the air pressure potential energy and the compression heat energy are decoupled and stored in a constant-pressure gas storage tank and a hot oil tank correspondingly. When the remaining electricity cannot drive the blade type gas compressor to stably work to generate the gas at the set pressure, the system gets into an electric heat storage working condition, and the remaining elec