Solar thermal power plant and method for operating a solar thermal power plant

Abstract

The invention relates to a solar thermal power plant (1) comprising a solar collector steam generator unit (2) for generating steam, a solar collector steam superheater unit (4), downstream of the solar collector steam generator unit (2), for superheating the steam, and a steam turbine (40) which is connected to an outlet of the solar collector steam superheater unit (4) via a steam conduit system (13), superheated steam being supplied to the steam turbine when in use.; The solar thermal power plant (1) comprises an intermediate storage (20) which is connected to the steam conduit system (13) at least in a first high-temperature storage connecting point (HA1) interposed between the solar thermal steam superheater unit (4) and the steam turbine (40) to remove steam superheated in a storage mode from the steam conduit system (13) and which comprises a heat reservoir (22, 23, 24) in which thermal energy is drained from the steam fed into during the storage mode and is accumulated and the stored thermal energy is given off to the steam in an extraction mode, said steam being fed to the steam conduit system (13) from the intermediate storage (20). The intermediate storage is connected to a condenser (65) and / or a relaxation device (89) of the solar thermal power plant (1) in a low-temperature storage connecting point (NA3).; The invention also relates to a method for operating said solar thermal power plant (1).

Description

technical field [0001] The invention relates to a solar power plant with a solar collector-steam generating unit for generating steam, a solar collector arranged behind the solar collector-steam generating unit for superheating the steam - a steam superheater unit and a steam turbine connected to the outlet of said solar collector-steam superheater unit by a steam piping system, said steam turbine being fed with superheated steam in operation. Among other things, the invention relates to a method for operating such a solar power plant. Background technique [0002] Solar power plants represent an alternative to conventional means of generating electricity. Currently, solar power plants with parabolic trough collectors are provided with an indirect evaporation function by means of an additional oil circuit. For the future, solar power plants with direct evaporation will be developed. A solar power plant with a direct evaporation function can comprise, for example, one or m...

AI Technical Summary

Problems solved by technology

The main problem in implementing such an intermediate storage concept is how to store energy in the accumulator as efficiently as possible for as long as possible and to withdraw it from the accumulator when required with as little loss as possible. call out

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