Coal-fired unit deep peak regulation device coupled with steam compressor and phase change heat storage

The invention relates to the technical field of coal-fired power generation, and discloses a steam compressor and phase change heat storage coupled coal-fired unit deep peak regulation device which comprises a steam compression system, a phase change heat storage system and a water storage system. The steam compression system comprises a first-stage steam compressor and a second-stage steam compressor which are connected in sequence; the phase change heat storage system is composed of a series of phase change heat exchangers. The water storage system comprises a high temperature water tank and a low temperature water tank. In the deep peak regulation period of the unit, the peak regulation depth of the unit can be obviously increased by compressing low-energy-level steam, storing latent heat of vaporization through the phase change material and storing sensible heat through the hot water tank; in the peak load period of the unit, the phase-change material is released to store latent heat of vaporization, the