Fused salt heat storage coupling system and operation method thereof

The invention relates to the technical field of thermal power generation and cogeneration, and discloses a fused salt heat storage coupling system which is characterized in that a boiler is communicated with a steam turbine high-pressure cylinder through a main steam pipeline, the steam turbine high-pressure cylinder is communicated with the boiler through a reheating cold section pipeline, and the boiler, the main steam pipeline, a bypass steam pipeline and a fused salt heat storage system are sequentially communicated; the fused salt heat storage system, the reheating cold section pipeline and the boiler are communicated in sequence, the boiler is communicated with the steam turbine intermediate pressure cylinder through the reheating hot section pipeline, the water supply pipeline, the fused salt heat storage system and the first steam supply pipeline are communicated in sequence, and the second steam supply pipeline is communicated with the reheating hot section pipeline. The first steam supply pipeline a