Bypass steam recovery system and operation method of solar thermal power station equipped with steam heat storage tank

Abstract

The invention discloses a solar thermal power station bypass steam recovery system and an operation method equipped with a steam heat storage tank, which relate to the field of solar thermal power stations, and are mainly used to solve the problem of recycling and utilization of bypass steam of the solar thermal power station; the system mainly includes the following steps: The power generation system of the solar thermal power station and the steam heat storage tank in parallel with it; during the startup process of the solar thermal power station, the incoming steam heat storage tank is controlled by adjusting the steam inlet regulating valve of the steam heat storage tank and the steam inlet desuperheating device of the steam heat storage tank. The steam flow and temperature of the tank realizes the recovery of the bypass steam; when the light resources are insufficient, the steam of the steam heat storage tank is used to replace the steam of the high-pressure heater, which improves the power generation of the solar thermal power station and realizes the recovery of Utilization of steam; the invention realizes the recovery and utilization of the bypass steam of the solar thermal power station at a lower cost by configuring the steam heat storage tank, which is beneficial to increase the total annual power generation of the solar thermal power station and reduce the power generation cost.

Description

technical field [0001] The invention relates to the technical field of solar thermal power plants, in particular to a bypass steam recovery system and an operation method of a solar thermal power station equipped with a steam heat storage tank. Background technique [0002] The cleanness and abundance of solar energy resources have led to the continuous development of solar energy utilization technology, among which CSP is a technology that effectively utilizes solar energy. However, due to the high power generation cost of CSP plants, the market competitiveness of CSP plants in the field of power generation is reduced. Increasing the annual power generation of a CSP station can reduce the cost of solar power generation, and reducing the energy loss during the startup process of a CSP station can effectively increase the annual power generation capacity of a CSP station. During the start-up process of the CSP station, due to the inconsistent start-up time of the steam gener...

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Problems solved by technology

However, due to the high cost of power generation of solar thermal power plants, the market competitiveness of solar thermal power plants in the field of power generation has been reduced

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