A system for improving the peak shaving performance of a thermal power unit by using molten salt energy storage

Abstract

The present application belongs to the technical field of thermal power generation equipment, and relates to a system for improving the peak shaving performance of a thermal power unit by using molten salt energy storage, which comprises a boiler, a steam turbine, a condenser and a deaerator connected in sequence from the head to the tail, and further comprises a heat storage unit comprising a cold molten salt storage tank, a hot molten salt storage tank, a first heat exchanger, a second heat exchanger, a first condenser and a second condenser. The system provided by the present application solves the problem of mismatch between the heat absorption flow of molten salt and the release of sensible heat and latent heat of the main steam, and by first releasing the sensible heat of the main steam and then splitting the flow to two condensers to complete the release of latent heat, the cold molten salt is also split into two paths to absorb latent heat before entering the corresponding heat exchanger to absorb sensible heat, thereby achieving dynamic matching between the molten salt flow and the steam heat release. Therefore, the heat exchange efficiency and energy utilization accuracy are effectively improved, heat waste is avoided, and the system peak shaving response capability and operation stability are enhanced.

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