Adjustable peak energy storage system based on supercritical carbon dioxide circulation and control method thereof

A carbon dioxide, energy storage system technology, applied in solar thermal power generation, mechanisms that generate mechanical power, and mechanical power generated by solar energy, etc., can solve problems such as difficulty in peak regulation, avoid shocks, reduce electricity costs, and improve intermittent energy. the effect of the ability

Active Publication Date: 2019-03-08
STATE GRID SHAANXI ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a peak-adjustable energy storage system based on supercritical carbon dioxide cycle and its co

Method used

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  • Adjustable peak energy storage system based on supercritical carbon dioxide circulation and control method thereof

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Embodiment Construction

[0021] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] see figure 1 Said, the present invention is an adjustable peak energy storage system based on supercritical carbon dioxide cycle, including: a low-pressure supercritical carbon dioxide storage tank 1, a first compressor 2, a motor 3, a first heat exchanger 4, a first cooler 5. High-pressure supercritical carbon dioxide storage tank 6, second heat exchanger 7, low-temperature brine storage tank 8, high-temperature brine storage tank 9, first turbine 10, generator 11, heat source 12, second turbine 13, second The compressor 14 and the second cooler 15 also include seven flow control valves 101-107.

[0023] The first outlet of the low-pressure supercritical carbon dioxide storage tank 1 is connected to the inlet of the first compressor 2 through the first control valve 101, and the exhaust port of the first compressor 2 is connected to the first ...

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Abstract

The invention discloses an adjustable peak energy storage system based on supercritical carbon dioxide circulation and a control method thereof. The system comprises a low-pressure supercritical carbon dioxide storage tank, a first compressor, a first heat exchanger, a first cooler, a high-pressure supercritical carbon dioxide storage tank, a low-temperature brine storage tank and a high-temperature brine storage tank; a first outlet of the low-pressure supercritical carbon dioxide storage tank is connected with an inlet of the first compressor through a first control valve, an exhaust port ofthe first compressor is connected with a first inlet of a first heat exchanger, and a first outlet of the first heat exchanger is connected with an inlet of the high-pressure supercritical carbon dioxide storage tank through the first cooler and a second control valve; and a second outlet of the first heat exchanger is connected with an inlet of the high-temperature brine storage tank, and an outlet of the low-temperature brine storage tank is connected with a second inlet of the first heat exchanger through a fourth control valve. By the adoption of the system, peak shifting and valley filling can be effectively realized, the power cost of a user can be well reduced, and the capability of the user to accept an intermittent energy source can be improved.

Description

technical field [0001] The invention belongs to the technical field of combined power cycle devices, in particular to a peak-adjustable energy storage system based on a supercritical carbon dioxide cycle and a control method thereof. Background technique [0002] Under the double pressure of the increasing scarcity of traditional energy sources and the deteriorating environment, new energy sources have received more attention, and their power generation scale is increasing day by day. At present, wind power, solar power and other new energy power generation are subject to natural conditions, fluctuating and intermittent, and difficult to adjust and control. Large-scale grid connection will affect the safe and stable operation of the power grid. The application of energy storage technology has largely solved the disadvantages of intermittent and volatile power generation of new energy, effectively promoted the development of new energy, and gradually improved its market compe...

Claims

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Application Information

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IPC IPC(8): F03G6/00F01K25/10F01K7/32F01D15/10
CPCF01D15/10F01K7/32F01K25/103F03G6/00Y02E10/46
Inventor 谢永慧孙磊党原健王永庆张荻傅金柱张沛
Owner STATE GRID SHAANXI ELECTRIC POWER RES INST
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