Energy storage power generation system
A power generation system and energy storage technology, applied in the field of energy storage, can solve problems such as low energy utilization
Pending Publication Date: 2022-05-10
ELECTRIC POWER PLANNING & ENG INST +2
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0024] The terms "first", "second" and the like in the description and claims of the present invention are used to distinguish similar objects, and are not used to describe a specific sequence or sequence. It should be understood that the structures so used are interchangeable under appropriate circumstances such that the embodiments of the invention are capable of practice in sequences other than those illustrated or described herein, and references to...
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The embodiment of the invention provides an energy storage power generation system which comprises a first subsystem and a second subsystem, and the first subsystem can comprise a heat storage tank, a cold storage tank, a first compressor, a first expansion machine, a first heat exchanger, a second compressor, a second expansion machine and a second heat exchanger. The cold storage tank, the first compressor, the heat storage tank, the first heat exchanger and the first expansion machine sequentially form a first loop, and the cold storage tank, the second compressor, the heat storage tank, the second expansion machine and the second heat exchanger sequentially form a second loop; the second subsystem can comprise a generator set, a first steam extraction heat regeneration device and a second steam extraction heat regeneration device, the generator set is electrically connected with the first compressor, the second compressor, the first expansion machine and the second expansion machine, and the first steam extraction heat regeneration device and the second steam extraction heat regeneration device are arranged on the first heat exchanger and the second heat exchanger respectively. A gas working medium is stored in the first subsystem and can circulate in the first loop and / or the second loop, and the energy utilization rate is increased.
Description
technical field [0001] The invention relates to the field of energy storage, in particular to an energy storage power generation system. Background technique [0002] Heat pump power storage is a new type of large-scale physical power storage technology. During energy storage, the heat energy is "extracted" from the inside of the cold storage to the heat storage through the reverse Brayton cycle (heat pump cycle), and the cold energy and heat energy are stored; when electric energy is needed, the forward Brayton cycle (power cycle) is used ) to convert stored heat and cold energy into electricity. However, the energy loss is large during the cycle, resulting in low energy utilization of the system. [0003] It can be seen that the existing heat pump power storage system has the problem of low energy utilization. Contents of the invention [0004] An embodiment of the present invention provides an energy storage power generation system to solve the problem of low energy ...
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IPC IPC(8): F01K25/10H02J15/00
CPCF01K25/10H02J15/00
Inventor 侯孟婧李博章超
Owner ELECTRIC POWER PLANNING & ENG INST