Energy storage peak regulation system and method integrating fused salt heat storage and steam energy accumulator

The invention discloses an energy storage peak regulation system and method integrating fused salt heat storage and a steam energy accumulator, and relates to the field of unit energy storage peak regulation, and the system comprises a steam power cycle power generation subsystem, a fused salt heat storage subsystem and a steam energy storage subsystem; when the unit runs at low load or drops load, the energy of part of main steam or other steam at the outlet of the steam generator is stored through the fused salt and the steam energy accumulator, so that the unit runs at low load or drops load quickly; when the load of the unit is increased, heat of the high-temperature molten salt tank is released to heat feed water, and steam in the steam energy accumulator is released to replace regenerative steam or heat supply, so that the variable load rate of the unit is increased; and the outlet high-pressure steam after the main steam is extracted and the fused salt is subjected to heat storage can be well stored by