Oil gas temperature control method and system for compressed air energy storage system

The invention discloses an oil-gas temperature control method for a compressed air energy storage system, the method is used for the compressed air energy storage system, the compressed air energy storage system comprises multiple stages of compressors and multiple stages of oil-gas heat exchangers, and the primary oil-gas heat exchanger and the final oil-gas heat exchanger have the same oil quantity. The method comprises the following steps: establishing a cascade control loop for controlling the air outlet temperature of a last-stage compressor; oil temperature correction is introduced to correct the gas outlet temperature set value of the last-stage oil-gas heat exchanger in real time; a compressor air flow correction amount is introduced to correct nonlinearity of the main regulator and serves as a feedforward correction auxiliary regulator. The invention further discloses an oil gas temperature control system for the compressed air energy storage system. According to the oil-gas temperature control metho