Wind power generation and groove type solar thermal power generation power supply and steam supply system

Abstract

The utility model discloses a wind power generation and groove type solar thermal power generation, power supply and steam supply system, which is characterized in that a wind power generation system is connected with a power consumer and a solid heat storage boiler through a power transmission line, the solid heat storage boiler is connected with a gas-steam heat exchanger, and the gas-steam heat exchanger is connected with a steam heat consumer; the groove type solar heat collection system is connected with the oil-salt heat exchanger, the oil-salt heat exchanger is connected with the salt-steam heat exchanger, the steam generator, the fused salt heat storage hot tank and the fused salt heat storage cold tank, and the salt-steam heat exchanger is connected with the steam heat user, the fused salt heat storage hot tank and the fused salt heat storage cold tank. The steam generator is connected with the gas turbine engine, the fused salt heat storage hot tank and the fused salt heat storage cold tank; the gas turbine is connected with the generator which is connected with a power consumer. The system has the advantages that power and steam are supplied through multi-energy complementation of wind energy and solar energy, the energy consumption proportion of renewable energy sources of steam heat users and power users is increased, use of fossil energy is reduced in various energy consumption fields, and carbon reaching and carbon neutralization are facilitated.

Description

Technical field:

[0001] The utility model relates to the technical field of power generation and steam supply, and in particular to a wind power generation and trough type solar thermal power generation, power supply and steam supply system. Background technology:

[0002] In October 2021, the State Council's Notice on Issuing an Action Plan for Peak Carbon Emissions before 2030 (Guofa

[2021] No. 23) clearly proposed "building a new power system with a gradually increasing proportion of new energy". Achieving the goals of "carbon peak and carbon neutrality" and building a new power system have been listed as national key tasks, and increasing the proportion of clean energy such as solar and wind power generation is an important step in achieving the "dual carbon" goals and building a new power system. Against this background, a wind power generation and trough solar thermal power generation power supply and steam supply system is proposed. Utility model content:

[0003] The utility model aims to provide a wind power generation and trough type solar thermal power generation power and steam supply system.

[0004] The utility model is implemented by the following technical scheme: a wind power generation, trough solar thermal power generation, power supply and steam supply system, which includes a wind power generation system, a solid heat storage boiler, an air-steam heat exchanger, a trough solar thermal collection system, an oil-salt heat exchanger, a salt-steam heat exchanger, a molten salt heat storage hot tank, a molten salt heat storage cold tank, a steam generator, a gas turbine, and a generator; the wind power generation system is connected to power users and the solid heat storage boiler through transmission lines, the solid heat storage boiler is connected to the air-steam heat exchanger through a pipeline, and the air-steam heat exchanger is connected to steam heat users through a pipeline; The trough type solar thermal collection system is connected to the oil-salt heat exchanger through a heat transfer pipeline, the oil-salt heat exchanger is connected to the salt-steam heat exchanger, the steam generator, the molten salt heat storage tank and the molten salt heat storage tank through a pipeline, the salt-steam heat exchanger is connected to the steam heat user, the molten salt heat storage tank and the molten salt heat storage tank through a pipeline; the steam generator is connected to the gas turbine, the molten salt heat storage tank and the molten salt heat storage tank through a pipeline; the gas turbine is connected to the generator, and the generator is connected to the power user through a transmission line.

[0005] Preferably, it also includes a wind power prediction system and a light power prediction system, wherein the wind power prediction system is connected to the wind power generation system, and the light power prediction system is connected to the trough solar thermal collection system.

[0006] Advantages of the utility model: Compared with the existing technology, it uses multi-energy complementarity of wind energy and solar energy to supply electricity and steam, increases the proportion of renewable energy consumption by steam and heat users and electricity users, reduces the use of fossil energy in various energy consumption fields, and helps achieve carbon peak and carbon neutrality. Description of the drawings:

[0007] Figure 1 This is a schematic diagram of system connection in Example 1;

[0008] In the figure: 1. wind power generation system, 2. solid heat storage boiler, 3. gas-steam heat exchanger, 4. steam heat user, 5. trough solar thermal collection system, 6. oil-salt heat exchanger, 7. salt-steam heat exchanger, 8. molten salt heat storage hot tank, 9. molten salt heat storage cold tank, 10. steam generator, 11. gas turbine, 12. generator, 13 power user, 14. wind power prediction system, 15. optical power prediction system, 16. first valve, 17. second valve, 18. third valve, 19. fourth valve, 20. fifth valve, 21. sixth valve, 22. seventh valve, 23. eighth valve, 24. ninth valve. Specific implementation method:

[0009] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0010] Embodiment 1:

[0011] like Figure 1 As shown, a thermoelectric decoupled power and steam supply system based on solar thermal heat storage includes a wind power generation system 1, a solid heat storage boiler 2, a gas-steam heat exchanger 3, a trough solar thermal collection system 5, an oil-salt heat exchanger 6, a salt-steam heat exchanger 7, a molten salt heat storage hot tank 8, a molten salt heat storage cold tank 9, a steam generator 10, a gas turbine 11, and a generator 12.

[0012] The wind power generation system 1 is connected to the power user 13 and the solid heat storage boiler 2 through the transmission line respectively. The solid heat storage boiler 2 is connected to the gas-steam heat exchanger 3 through a pipeline. A first valve 16 is provided on the pipeline from the solid heat storage boiler 2 to the gas-steam heat exchanger 3. The gas-steam heat exchanger 3 is connected to the steam heat user 4 through a pipeline. A second valve 17 is provided on the pipeline from the gas-steam heat exchanger 3 to the steam heat user 4; the trough solar thermal collection system 5 is connected to the oil-salt heat exchanger 6 through a heat transfer pipeline. The oil-salt heat exchanger 6 is connected to the salt-steam heat exchanger 7, the steam generator 10, the molten salt heat storage tank 8 and the molten salt heat storage cold tank 9 through a pipeline. A third valve 18 is provided on the pipeline from the oil-salt heat exchanger 6 to the salt-steam heat exchanger 7. A sixth valve is provided on the pipeline from the oil-salt heat exchanger 6 to the molten salt heat storage tank 8. A fifth valve 20 is provided on the pipeline from the oil-salt heat exchanger 6 to the steam generator 10; the salt-steam heat exchanger 7 is connected to the steam heat user 4, the molten salt heat storage tank 8 and the molten salt heat storage cold tank 9 through a pipeline; a fourth valve 19 is provided on the pipeline from the salt-steam heat exchanger 7 to the steam heat user 4; a seventh valve 22 is provided on the pipeline from the molten salt heat storage tank 8 to the salt-steam heat exchanger 7; the steam generator 10 is connected to the gas turbine 11, the molten salt heat storage tank 8 and the molten salt heat storage cold tank 9 through a pipeline; a ninth valve 24 is provided on the pipeline from the steam generator 10 to the gas turbine 11, and an eighth valve 23 is provided on the pipeline from the molten salt heat storage tank 8 to the steam generator 10; the gas turbine 11 is connected to the generator 12, and the generator 12 is connected to the power user 13 through a transmission line.

[0013] The wind power prediction system 14, the light power prediction system 15 and the energy management system are used to determine the power generation power, the power supply power and the steam supply load at each moment.

[0014] For the convenience of describing the operation mode, the trough solar thermal collection system 5, the oil-salt heat exchanger 6, the molten salt heat storage hot tank 8, and the molten salt heat storage cold tank 9 are referred to as a solar thermal system.

[0015] Wind power supply, solar thermal system heating mode: the first valve 16, the second valve 17, the fifth valve 20, the eighth valve 23, and the ninth valve 24 remain in the closed state, and the fourth valve 19 remains in the open state.

[0016] The wind power generation system 1 supplies power to the power user 13 via the power transmission line, and the surplus power of the wind power generation system 1 is converted into heat through the solid heat storage boiler 2 and stored in the solid heat storage boiler 2 .

[0017] When the heating power of the trough type solar thermal collection system 5 is less than or equal to the heat load power of the steam heat user 4, the third valve 18 and the sixth valve 21 are opened, and the seventh valve 22 is closed, and the trough type solar thermal collection system 5 supplies heat to the steam heat user 4 through the oil-salt heat exchanger 6 and the salt-steam heat exchanger 7, and stores the surplus heat in the molten salt heat storage tank 8 through the oil-salt heat exchanger 6.

[0018] When the heating power of the trough type solar thermal collection system 5 is less than the heat load power of the steam heat user 4, the third valve 18 and the seventh valve 22 are opened, and the sixth valve 21 is closed, and the trough type solar thermal collection system 5 supplies heat to the steam heat user 4 through the oil-salt heat exchanger 6 and the salt-steam heat exchanger 7, and at the same time, the molten salt heat storage tank 8 supplies heat to the steam heat user 4 through the salt-steam heat exchanger 7.

[0019] When the power of the trough solar thermal collection system 5 is 0, the seventh valve 22 is opened, the third valve 18 and the sixth valve 21 are closed, and the molten salt heat storage tank 8 supplies heat to the steam heat user 4 through the salt-steam heat exchanger 7 .

[0020] Wind power supply, wind power and solar thermal system heating mode:

[0021] One situation is: the first valve 16, the second valve 17, the third valve 18, and the fourth valve 19 are open, and the fifth valve 20, the sixth valve 21, the seventh valve 22, the eighth valve 23, and the ninth valve 24 are closed. The wind power generation system 1 supplies power to the power user 13 through the transmission line; the wind power generation system 1 converts the power into heat energy through the solid heat storage boiler 2, and then the ventilation steam heat exchanger 3 supplies heat to the steam heat user 4, and the trough solar thermal collection system 5 supplies heat to the steam heat user 4 through the oil-salt heat exchanger 6 and the salt-steam heat exchanger 7.

[0022] In another case, the first valve 16, the second valve 17, the fourth valve 19, and the seventh valve 22 are opened, and the third valve 18, the fifth valve 20, the sixth valve 21, the eighth valve 23, and the ninth valve 24 are closed. The wind power generation system 1 supplies power to the power user 13 through the transmission line; the wind power generation system 1 converts the power into heat energy through the solid heat storage boiler 2, and then the ventilation steam heat exchanger 3 supplies heat to the steam heat user 4, and the molten salt heat storage tank 8 supplies heat to the steam heat user 4 through the salt steam heat exchanger 7.

[0023] Wind power independent power supply and heating mode: the first valve 16 and the second valve 17 are open, and the third valve 18, the fourth valve 19, the fifth valve 20, the sixth valve 21, the seventh valve 22, the eighth valve 23 and the ninth valve 24 are closed. The wind power generation system 1 supplies power to the power user 13 through the transmission line; the wind power generation system 1 converts the power into heat energy through the solid heat storage boiler 2, and then the ventilation steam heat exchanger 3 supplies heat to the steam heat user 4.

[0024] Independent power supply and heating mode of the solar thermal system: the first valve 16 and the second valve 17 remain in a closed state, and the fourth valve 19 and the ninth valve 24 remain in an open state. According to the different heat collection powers of the trough type solar thermal collection system 5, there are the following situations.

[0025] When the heating power of the trough solar thermal collection system 5 is greater than or equal to the sum of the heat load power of the steam heat user 4 and the heat power required by the gas turbine 11, the third valve 18, the fifth valve 20, and the sixth valve 21 are opened, and the seventh valve 22 and the eighth valve 23 are closed. The trough solar thermal collection system 5 supplies heat to the steam heat user 4 through the oil-salt heat exchanger 6 and the salt-steam heat exchanger 7. At the same time, the trough solar thermal collection system 5 transmits heat to the gas turbine 11 through the oil-salt heat exchanger 6 and the steam generator 10. The gas turbine 11 converts kinetic energy into electrical energy through the generator 12 to supply power to the power user 13, and stores the surplus heat in the molten salt heat storage tank 8 through the oil-salt heat exchanger 6.

[0026] When the heating power of the trough solar thermal collection system 5 is less than the sum of the heat load power of the steam heat user 4 and the heat power required by the gas turbine 11, but the heating power of the trough solar thermal collection system 5 is greater than the heat power required by the gas turbine 11, the third valve 18, the fifth valve 20, and the seventh valve 22 are opened, and the sixth valve 21 and the eighth valve 23 are closed, and the trough solar thermal collection system 5 transfers heat to the gas turbine 11 through the oil-salt heat exchanger 6 and the steam generator 10, and the gas turbine 11 converts kinetic energy into electrical energy through the generator 12 to supply power to the power user 13. At the same time, the trough solar thermal collection system 5 supplies heat to the steam heat user 4 through the oil-salt heat exchanger 6 and the salt-steam heat exchanger 7, and the insufficient heat for the steam heat user 4 is provided to the steam heat user 4 by the molten salt heat storage tank 8 through the salt-steam heat exchanger 7.

[0027] When the heating power of the trough solar thermal collection system 5 is less than the thermal power required by the gas turbine 11, the fifth valve 20, the seventh valve 22, and the eighth valve 23 are opened, and the third valve 18 and the sixth valve 21 are closed. The trough solar thermal collection system 5 transmits heat to the gas turbine 11 through the oil-salt heat exchanger 6 and the steam generator 10. The insufficient heat required by the gas turbine 11 is provided by the molten salt heat storage tank 8 through the steam generator 10. The gas turbine 11 converts kinetic energy into electrical energy through the generator 12 to supply electricity to the power user 13; at the same time, the molten salt heat storage tank 8 provides heat to the steam heat user 4 through the salt-steam heat exchanger 7.

[0028] When the power of the trough solar thermal collection system 5 is 0, the seventh valve 22 and the eighth valve 23 are opened, the third valve 18, the fifth valve 20 and the sixth valve 21 are closed, and the molten salt heat storage tank 8 transfers heat to the gas turbine 11 through the steam generator 10, and the gas turbine 11 converts kinetic energy into electrical energy through the generator 12 to supply power to the power user 13; at the same time, the molten salt heat storage tank 8 provides heat to the steam heat user 4 through the salt-steam heat exchanger 7.

[0029] Wind power supply, solar thermal system power supply and heating mode: the first valve 16 and the second valve 17 remain closed, and the fourth valve 19 and the ninth valve 24 remain open. The wind power generation system 1 supplies power to the power user 13 through the transmission line; the solar thermal system transmits the insufficient power of the power user 13 to the gas turbine 11 through the steam generator 10, and the gas turbine 11 converts the kinetic energy into electrical energy through the generator 12 to supply power to the power user 13. According to the different heat collection power of the trough solar thermal collection system 5, there are the following situations.

[0030] When the heating power of the trough solar thermal collection system 5 is greater than or equal to the sum of the heat load power of the steam heat user 4 and the heat power required by the gas turbine 11, the third valve 18, the fifth valve 20, and the sixth valve 21 are opened, and the seventh valve 22 and the eighth valve 23 are closed. The trough solar thermal collection system 5 supplies heat to the steam heat user 4 through the oil-salt heat exchanger 6 and the salt-steam heat exchanger 7. At the same time, the trough solar thermal collection system 5 transmits heat to the gas turbine 11 through the oil-salt heat exchanger 6 and the steam generator 10. The gas turbine 11 converts kinetic energy into electrical energy through the generator 12 to supply power to the power user 13, and stores the surplus heat in the molten salt heat storage tank 8 through the oil-salt heat exchanger 6.

[0031] When the heating power of the trough solar thermal collection system 5 is less than the sum of the heat load power of the steam heat user 4 and the heat power required by the gas turbine 11, but the heating power of the trough solar thermal collection system 5 is greater than the heat power required by the gas turbine 11, the third valve 18, the fifth valve 20, and the seventh valve 22 are opened, and the sixth valve 21 and the eighth valve 23 are closed, and the trough solar thermal collection system 5 transfers heat to the gas turbine 11 through the oil-salt heat exchanger 6 and the steam generator 10, and the gas turbine 11 converts kinetic energy into electrical energy through the generator 12 to supply power to the power user 13. At the same time, the trough solar thermal collection system 5 supplies heat to the steam heat user 4 through the oil-salt heat exchanger 6 and the salt-steam heat exchanger 7, and the insufficient heat for the steam heat user 4 is provided to the steam heat user 4 by the molten salt heat storage tank 8 through the salt-steam heat exchanger 7.

[0032] When the heating power of the trough solar thermal collection system 5 is less than the thermal power required by the gas turbine 11, the fifth valve 20, the seventh valve 22, and the eighth valve 23 are opened, and the third valve 18 and the sixth valve 21 are closed. The trough solar thermal collection system 5 transmits heat to the gas turbine 11 through the oil-salt heat exchanger 6 and the steam generator 10. The insufficient heat required by the gas turbine 11 is provided by the molten salt heat storage tank 8 through the steam generator 10. The gas turbine 11 converts kinetic energy into electrical energy through the generator 12 to supply electricity to the power user 13; at the same time, the molten salt heat storage tank 8 provides heat to the steam heat user 4 through the salt-steam heat exchanger 7.

[0033] When the power of the trough solar thermal collection system 5 is 0, the seventh valve 22 and the eighth valve 23 are opened, the third valve 18, the fifth valve 20 and the sixth valve 21 are closed, and the molten salt heat storage tank 8 transfers heat to the gas turbine 11 through the steam generator 10, and the gas turbine 11 converts kinetic energy into electrical energy through the generator 12 to supply power to the power user 13; at the same time, the molten salt heat storage tank 8 provides heat to the steam heat user 4 through the salt-steam heat exchanger 7.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind power generation, trough solar thermal power generation, power and steam supply system, characterized in that: It includes a wind power generation system, a solid heat storage boiler, an air-steam heat exchanger, a trough type solar thermal collection system, an oil-salt heat exchanger, a salt-steam heat exchanger, a molten salt heat storage hot tank, a molten salt heat storage cold tank, a steam generator, a gas turbine, and a generator; the wind power generation system is connected to the power user and the solid heat storage boiler through a transmission line, the solid heat storage boiler is connected to the air-steam heat exchanger through a pipeline, and the air-steam heat exchanger is connected to the steam heat user through a pipeline; the trough type solar thermal collection system is connected to the The oil-salt heat exchanger is connected, and the oil-salt heat exchanger is connected to the salt-steam heat exchanger, the steam generator, the molten salt heat storage tank and the molten salt heat storage tank through a pipeline, and the salt-steam heat exchanger is connected to the steam heat user, the molten salt heat storage tank and the molten salt heat storage tank through a pipeline; the steam generator is connected to the gas turbine, the molten salt heat storage tank and the molten salt heat storage tank through a pipeline; the gas turbine is connected to the generator, and the generator is connected to the power user through a transmission line.

2. A wind power generation, trough solar thermal power generation, power supply and steam supply system according to claim 1, characterized in that: It also includes a wind power prediction system and a light power prediction system. The wind power prediction system is connected to the wind power generation system, and the light power prediction system is connected to the trough solar thermal collection system.

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