A solar thermal power generation system combined with a gas and steam power cycle power generation system
A technology for solar thermal power generation and cycle power generation, which is applied to solar thermal power generation, mechanisms that generate mechanical power, and mechanical power generated by solar energy, etc. It can solve the problems of low efficiency, small gas turbine and its combined cycle capacity, etc. , to achieve the effect of cascade utilization and improve efficiency
Inactive Publication Date: 2019-07-16
STATE GRID CORP OF CHINA +4
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Problems solved by technology
[0008] The gas turbine and its combined cycle power generation technology began to appear on the stage of the electric industry in the 1950s. However, due to the small capacity and low efficiency of the gas turbine and its combined cycle at that time, and it could only burn gas or liquid fuel, it could not be compared with the traditional one for a long time. Gas-fired power technology rivals
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[0025] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0026] see figure 1 , The system of the present invention includes a solar concentrating heat collection subsystem, a heat exchange device, a gas power cycle power generation sub-system and a steam power cycle power generation sub-system. The gas power cycle power generation sub-system and the steam power cycle power generation sub-system have their own power generation devices, which are used to convert thermal energy into electrical energy. When the solar energy is surplus, the heat-carrying medium can be heated by the solar energy to generate electricity. When the solar radiation energy is insufficient, it can be The direct combustion of gas in the gas power cycle power generation sub-system makes up for the intermittent shortcomings of solar e...
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The invention discloses a solar thermal power generation system combined with a gas and steam power cycle power generation system. The solar thermal power generation system comprises a solar condensation and heat collection subsystem, a heat exchange device, a steam power cycle power generation subsystem and a gas power cycle power generation subsystem; an outlet of the solar condensation and heat collection subsystem is connected with an inlet of a heat exchanger unit; the steam power cycle power generation subsystem comprises a steam turbine, a steam turbine power generator, a condenser and a water feeding pump; one end of the water feeding pump is connected with the condenser; the other end of the water feeding pump is connected with the inlet of the heat exchanger unit; the gas power cycle power generation subsystem comprises a compressor, a burning chamber, a gas turbine and a gas turbine power generator; the gas turbine is connected with a fourth heat exchanger; and the fourth heat exchanger is connected with an inlet of the solar condensation and heat collection subsystem. Gradient utilization of energy is realized; with the adoption of the gas power cycle power generation subsystem, the problem that solar energy is not stable is solved; and the gas power cycle power generation subsystem is used for power generation when the solar energy is not sufficient, so that continuous operation of the solar thermal power generation system is realized.
Description
technical field [0001] The invention relates to a solar thermal power generation system combined with a gas and steam power cycle power generation system, belonging to the technical field of solar thermal utilization. Background technique [0002] The existing technologies regarding tower solar thermal power generation, volumetric receivers and solar-gas combined cycle power generation are summarized as follows. [0003] 1. Tower solar thermal power generation system [0004] Solar thermal power generation is to convert solar radiation energy into high-temperature heat energy by means of optical focusing, and then convert heat energy into electrical energy through a certain device. Tower-type solar thermal power generation adopts point focusing technology, also known as concentrated solar thermal power generation system. It is equipped with many large reflectors, namely heliostats, on a large-scale site, each of which has its own tracking mechanism, which accurately reflec...
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IPC IPC(8): F01K23/10F03G6/06F01K13/00F01D15/10F02C6/00F02C6/18
CPCF01D15/10F01K13/00F02C6/00F02C6/18F03G6/06F03G6/064Y02E10/46Y02E20/16
Inventor 冯炜杜炜邵方知王启扬林晨严倩雯王军
Owner STATE GRID CORP OF CHINA