Solar Combined Cycle Power Generation System Suitable for Variable Irradiance Regulation

Abstract

The invention discloses a solar energy combined cycle power generation system for variable irradiation regulation. The solar energy combined cycle power generation system comprises a tower-type solar heating air heat collecting system, a gas turbine power generation system, a Rankine cycle power generation system, and a Kalina cycle power generation system. According to the solar energy combined cycle power generation system for variable irradiation regulation, a fossil fuel is not required for afterburning during low irradiation, a solar energy storage device is not required, and when the intensity of solar irradiation is relatively low, by means of change of an operation mode, the system bypasses gas turbine cycle and directly supplies heat for Rankine cycle and Kalina cycle, or bypasses gas turbine cycle and Rankine cycle and directly supplies heat for Kalina cycle, so that afterburning of a number of fossil fuel during low irradiation is avoided, and low-irradiation solar energy can fully utilized for solar power generation.

Description

technical field [0001] The invention relates to the technical field of solar thermal power generation, in particular to a solar combined cycle power generation system suitable for variable irradiation regulation. Background technique [0002] Due to the instability of solar energy, the solar thermal power generation system needs to be in the state of variable irradiance operation for a long time. At present, the main solar thermal power generation demonstration substation substation irradiation operation modes mainly include energy storage and supplementary combustion. However, the investment in the energy storage system is relatively large. Taking a 100MW trough solar thermal power generation system with 12 hours of energy storage as an example, the investment in the energy storage system accounts for about 20% of the total investment. Similarly, when the system is operated under low-irradiation supplementary combustion, the amount of supplementary combustion of fossil fue...

AI Technical Summary

Problems solved by technology

Similarly, when the system operates under low-irradiation supplementary combustion, the amount of supplementary combustion of fossil fuels is large, which will still cause serious environmental pollution, which is contrary to the original intention of developing solar energy

[0003] At present, the operation mode of the trough solar thermal power station is mainly when the radiation reaches a certain value (generally 300W / m 2 ), the system starts to run, but 300W / m 2 The following irradiations are not used to generate electricity

Images