CN108988739B - Nuclear reactor combined wind power and solar photovoltaic grid-connected power generation system - Google Patents
Nuclear reactor combined wind power and solar photovoltaic grid-connected power generation system Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
- H02S10/12—Hybrid wind-PV energy systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
-
- H02J3/383—
-
- H02J3/386—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
The invention discloses a nuclear reactor combined wind power and solar photovoltaic grid-connected power generation system which comprises three power generation modules, namely a nuclear reaction module, a wind power generation module and a solar photovoltaic power generation module, wherein the nuclear reaction module comprises a nuclear reactor, a steam generator and a first circulation loop, a steam-driven steam turbine and a generator are arranged on the first circulation loop, the steam-driven steam turbine drives the generator to generate power, electricity generated by the wind power generation module, the solar photovoltaic power generation module and the generator is collected in a power controller, and the power controller transmits the electricity to a power grid after transforming the voltage through a transformer. The invention combines the nuclear reactor with wind power generation and solar photovoltaic power generation to form a combined wind power and solar photovoltaic grid-connected power generation mode of the nuclear reactor, solves the disturbance problem of wind power and solar photovoltaic power generation to a power grid, and improves the peak regulation capability of the power grid.
Description
Technical Field
The invention belongs to the technical field of new energy and renewable energy application, and particularly relates to a wind power and solar photovoltaic grid-connected power generation system combining a nuclear reactor.
Background
In the scale of electric power installation in China, the proportion of coal and electricity is the largest, the emission of dust, sulfide, nitric oxide and carbon dioxide is brought by coal-fired power generation, and the emission causes atmospheric environmental pollution and causes haze and greenhouse effect. Renewable energy sources such as wind power generation and solar photovoltaic power generation are listed as priority development energy sources in China, but the wind power generation and the solar photovoltaic power generation have the characteristics of randomness, volatility and intermittence, and after the wind power generation and the solar photovoltaic power generation are connected into a power grid, disturbance can be caused to the power grid, the peak regulation difficulty of the power grid is increased, and the safety and the reliability of the power grid are reduced.
The nuclear energy is an efficient and clean energy source, is more and more accepted by the public, improves the proportion of the nuclear energy in the scale of the electric installation, and is one of effective methods for reducing the haze weather and atmospheric environmental pollution in China. The nuclear power, the wind power generation and the solar photovoltaic power generation are combined to form a combined wind power and solar photovoltaic grid-connected power generation mode of the nuclear reactor, so that the problem of disturbance of wind power and solar photovoltaic power generation on a power grid can be solved, the comprehensive utilization benefit of the nuclear power can be improved, the energy is saved, the environment is improved, and the method achieves multiple purposes.
Disclosure of Invention
The invention aims to solve the problems, and provides a combined wind power and solar photovoltaic grid-connected power generation system of a nuclear reactor.
The invention provides a nuclear reactor combined wind power and solar photovoltaic grid-connected power generation system which comprises three power generation modules, namely a nuclear reaction module, a wind power generation module and a solar photovoltaic power generation module, wherein the nuclear reaction module comprises a nuclear reactor, a steam generator and a first circulation loop, a steam-driven steam turbine and a generator are arranged on the first circulation loop, heat is transferred to the steam generator to generate steam by an upper circulation pipeline of the nuclear reactor, the steam is conveyed to the steam-driven steam turbine on the first circulation loop, the steam-driven steam turbine drives the generator to generate power, electricity generated by the wind power generation module, the solar photovoltaic power generation module and the generator is collected in a power controller, and the power controller transmits the electricity to a power grid after transforming the electricity through a transformer.
Preferably, the nuclear reactor is provided with a third regulator, and a main pump is provided on a circulation pipe of the nuclear reactor.
As a further preferable means, the first circulation loop is provided with a second regulator on a pipeline close to the air inlet end of the steam-driven turbine, the first circulation loop is sequentially provided with a condenser and a water feeding pump from the pipeline at the air outlet end of the steam-driven turbine, the middle position of the first circulation loop is connected in parallel with an energy storage tank, and the bottom end of the energy storage tank is provided with a drain valve.
As a further preferable means, a first regulator is provided on the generator.
As a further preferred means, a monitor is connected in series between the power controller and the power grid.
As a further preferred means, a liquid metal circulation loop is employed within the nuclear reactor's circulation tube, the liquid metal comprising a single phase metal or metal alloy.
As a further preferred means, the wind power generation module is one or several wind farms that generate electricity by wind power.
As a further preferred means, the solar photovoltaic power generation module is one or several photovoltaic power stations which generate power by utilizing the photovoltaic effect of sunlight and semiconductor materials.
The invention has the beneficial effects that: 1. the invention combines the nuclear reactor with wind power generation and solar photovoltaic power generation to form a combined wind power and solar photovoltaic grid-connected power generation mode of the nuclear reactor, solves the disturbance problem of wind power and solar photovoltaic power generation to a power grid, and improves the peak regulation capability of the power grid.
2. The method has the advantages of developing a new field of nuclear energy application, improving the comprehensive utilization benefit of the nuclear energy, protecting the environment and causing no pollution to the atmospheric environment.
Drawings
Fig. 1 is a schematic structural diagram of a nuclear reactor combined wind power and solar photovoltaic grid-connected power generation system according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a nuclear reactor combined solar photovoltaic grid-connected power generation system according to embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of a nuclear reactor combined wind grid-connected power generation system according to embodiment 3 of the present invention.
In the figure: 1. a nuclear reactor; 2. a wind power generation module; 3. a solar photovoltaic power generation module; 4. a power controller; 5. A transformer; 6. a power grid; 7. a monitor; 8. a third regulator; 9. a main pump; 10. a steam generator; 11. an energy storage tank; 12. the steam pushes the steam turbine; 13. a generator; 14. a first regulator; 15. a second regulator; 16. a condenser 17 and a feed pump; 18. a trap.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
example 1
The invention discloses a nuclear reactor combined wind power and solar photovoltaic grid-connected power generation system, which comprises three power generation modules, namely a nuclear reaction module, a wind power generation module 2 and a solar photovoltaic power generation module 3, wherein the nuclear reaction module comprises a nuclear reactor 1, a steam generator 10 and a first circulation loop, a steam pushing steam turbine 12 and a power generator 13 are arranged on the first circulation loop, heat is transferred to the steam generator 10 to generate steam through a circulation pipeline on the nuclear reactor 1, the steam is conveyed to the steam pushing steam turbine 12 on the first circulation loop, the steam pushing steam turbine 12 drives the power generator 13 to generate power, electricity generated by the wind power generation module 2, the solar photovoltaic power generation module 3 and the power generator 13 is collected in a power controller 4, and the power controller 4 transmits the electricity to a power grid 6 after passing through a transformer 5. A reactor core is provided in the nuclear reactor 1.
As shown in fig. 1, a nuclear reactor 1 is a heat source, and outputs energy in the form of electric energy by driving a steam turbine 12 to drive a generator 13 through steam; the wind power generation module 2 is one or more wind power plants which generate power through wind power; the solar photovoltaic power generation module 3 is one or more photovoltaic power stations which generate power by utilizing the photovoltaic effect of sunlight and semiconductor materials, and wind power generation and solar photovoltaic power generation both belong to the field of renewable energy utilization. The generator 13, the wind power generation module 2, and the solar photovoltaic power generation module 3 are connected to the power controller 4 in parallel, the power controller 4 can control the power generation powers of the generator 13, the wind power generation module 2, and the solar photovoltaic power generation module 3, respectively, so that the total output electric power of the power controller 4 meets a target value, for example, the target value of the total output electric power at a certain time is 100%, the maximum electric power that can be provided by the wind power generation module 2 is 35%, the maximum electric power that can be provided by the solar photovoltaic power generation module 3 is 40%, the power control can control the electric power of the generator 13 to be 25%, the wind energy and the solar energy are utilized to the maximum, and the electric powers of the generator 13, the wind power generation module 2, and the solar power generation module 3 can be controlled to be 30%, 40%, and other proportions. Therefore, uncontrollable wind power generation and solar photovoltaic power generation are changed into controllable, the control force of the power grid on the power supply is improved, and the problem of disturbance of the wind power generation and the solar photovoltaic power generation on the power grid is solved.
The nuclear reactor 1 is provided with a third regulator 8, and the circulating pipe of the nuclear reactor 1 is provided with a main pump 9. The first circulation loop is provided with a second regulator 15 on a pipeline close to the air inlet end of the steam-driven turbine 12, the first circulation loop is sequentially provided with a condenser 16 and a water feeding pump 17 on the pipeline at the air outlet end of the steam-driven turbine 12, the middle position of the first circulation loop is connected in parallel with an energy storage tank 11, and the bottom end of the energy storage tank 11 is provided with a drain valve 18. The generator 13 is provided with a first regulator 14.
The nuclear reactor 1 generates electricity and includes a first regulator 14, a second regulator 15, and a third regulator 8. Wherein, the first regulator is used for regulating the excitation system of the generator 13, when the power controller 4 sends out a control command to the generator 13, the first regulator 14 responds to at first, regulate the output electric power of the generator 13 to the target value rapidly; the second regulator 15 is used for controlling the steam admission amount of the steam-driven turbine 12, regulate the output mechanical power that the steam-driven turbine 12 promotes, after the first regulator 14 acts, because of the inertia effect, the steam promotes the speed change of the steam turbine 12 and generator 13 and has certain delay, in this way, offer time for the second regulator 15 to regulate the admission amount, the second regulator response speed is slower than the first regulator; the third regulator 8 is used for controlling the fission reaction speed of the nuclear reactor 1, regulating the output thermal power of the nuclear reactor 1, enabling the steam generator 10 to generate enough steam to push the steam turbine 12 to do work, and when the steam quantity in the steam generator 10 is reduced to a low limit value after the second regulator 15 acts for a period of time, the third regulator 8 starts to act, and due to the arrangement of the energy storage tank 11, the action period of the third regulator 8 is prolonged. The multi-stage controller enables the power generated by the nuclear reactor 1 to be adjusted quickly and within a wide adjusting range, and can balance the fluctuation of the wind power generation module 2 and the solar photovoltaic power generation module 3, so that the beneficial effect that the power grid 6 is kept stable is achieved. The first regulator is further used for controlling the power factor of the generator 13 while regulating the output electric power of the generator 13, so that the proportion of active power and reactive power in the total output power is controlled, and the beneficial effect of regulating the electric energy quality of a power grid is achieved. The first regulator 14, the second regulator 15 and the third regulator 8 are commercially available, and any regulator can achieve the above functions and effects.
A monitor 7 is connected in series between the power controller 4 and the power grid 6. The monitor 7 is connected with the power grid 6 and the power controller 4 at the same time, the monitor 7 monitors the quality of the power grid 6 at any time, including parameters such as voltage and frequency, when the quality of the power grid 6 deviates from a target value, the monitor 7 timely feeds back to the power controller 4, the power controller 4 adjusts the total output parameter of the power controller 4 to enable the power grid 6 to recover the target value, for example, when the voltage of the power grid decreases, the power controller 4 can control the transformer 5 to increase the network access voltage to enable the voltage of the power grid 6 to recover the target value; when the frequency of the power grid is reduced, the power controller can control the generator 13 to increase the rotating speed and increase the network access frequency, so that the frequency of the power grid 6 is recovered to the target value. Therefore, the invention also has the beneficial effects of regulating voltage and frequency and improving the power quality of the power grid.
A liquid metal circulation loop is adopted in a circulation pipe of the nuclear reactor 1, and the liquid metal comprises single-phase metal or metal alloy. The nuclear reactor 1 is sequentially connected with the steam generator 10 and the main pump 9 through pipelines to form a liquid metal circulation loop, high-temperature liquid metal coming out of the nuclear reactor 1 is cooled in the steam generator 10 and then returns to the nuclear reactor 1 under the driving of the main pump 9, water in the steam generator 10 is heated into steam, and the steam pushes the steam turbine 12 to do work through the second regulator 15, so that the generator 13 is driven to generate electricity.
The nuclear reactor 1 refers to a nuclear fission reactor, and includes various reactor types such as a fast neutron reactor and a thermal neutron reactor, and the coolant used by the reactor 1 is liquid metal, including single-phase metal or various metal alloys, such as sodium, lead alloy and the like. The liquid metal has a high thermal conductivity, increasing the speed and flexibility of regulation of the nuclear reactor 1.
There are two other possible solutions for this application:
example 2
As shown in fig. 2, the wind power generation module 2 in example 1 is removed, and the rest of the structure is the same as that in example 1, and the nuclear reactor combined solar photovoltaic grid-connected power generation system is provided.
Example 3
As shown in fig. 3, the solar photovoltaic power generation module 3 in example 1 is removed, and the remaining part is the same as that in example 1, and the nuclear reactor combined wind power grid-connected power generation system is provided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
The present invention is not limited to the above description of the embodiments, and those skilled in the art should, in light of the present disclosure, appreciate that many changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (4)
1. A nuclear reactor combined wind power and solar photovoltaic grid-connected power generation system is characterized in that: the nuclear power generation system comprises a nuclear reaction module, a wind power generation module (2) and a solar photovoltaic power generation module (3), wherein the nuclear reaction module comprises a nuclear reactor (1), a steam generator (10) and a first circulation loop, a steam pushing turbine (12) and a generator (13) are arranged on the first circulation loop, a circulation pipeline on the nuclear reactor (1) transfers heat to the steam generator (10) to generate steam, the steam is conveyed to the steam pushing turbine (12) on the first circulation loop, the steam pushing turbine (12) drives the generator (13) to generate power, the wind power generation module (2), the solar photovoltaic power generation module (3) and the generator (13) all adopt the same power controller (4) to control power generation power, and the wind power generation module (2), the solar photovoltaic power generation module (3) and the generator (13) transmit the generated power to a power grid (6) after transforming the generated power through a transformer (5), the nuclear reactor (1) is provided with a third regulator (8), a main pump (9) is arranged on a circulating pipe of the nuclear reactor (1), a second regulator (15) is arranged on a pipeline close to the air inlet end of a steam-driven turbine (12) of the first circulating loop, a condenser (16) and a water feeding pump (17) are sequentially arranged on a pipeline of the air outlet end of the steam-driven turbine (12) of the first circulating loop, an energy storage tank (11) is connected in parallel at the middle position of the first circulating loop, a drain valve (18) is arranged at the bottom end of the energy storage tank (11), a first regulator (14) is arranged on a generator (13), and a monitor (7) is connected between the power controller (4) and a power grid (6) in series; when the power controller (4) sends a control command to the generator (13), the first regulator (14) responds to quickly regulate the output electric power of the generator (13) to a target value; after the first regulator (14) acts, the change of the rotating speed of the steam turbine (12) and the generator (13) pushed by the steam has a certain delay due to the inertia effect, so that time is provided for the second regulator (15) to regulate the steam inlet amount, and the response speed of the second regulator is slower than that of the first regulator; when the amount of steam in the steam generator (10) drops to a low limit value after the second regulator (15) has been activated for a certain period of time, the third regulator (8) is activated.
2. The nuclear reactor combined wind and solar photovoltaic grid-connected power generation system according to claim 1, wherein: a liquid metal circulation loop is adopted in a circulation pipe of the nuclear reactor (1), and the liquid metal comprises single-phase metal or metal alloy.
3. The nuclear reactor combined wind and solar photovoltaic grid-connected power generation system according to claim 1, wherein: the wind power generation module (2) is one or more wind power plants which generate power through wind power.
4. The nuclear reactor combined wind and solar photovoltaic grid-connected power generation system according to claim 1, wherein: the solar photovoltaic power generation module (3) is one or more photovoltaic power stations which generate power by utilizing the photovoltaic effect of sunlight and semiconductor materials.
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| EP3953947A2 (en) * | 2019-04-12 | 2022-02-16 | TerraPower LLC | Nuclear thermal plant with load-following power generation |
| CN111306001B (en) | 2020-03-02 | 2023-09-08 | 西安交通大学 | Wind-solar reactor system and working method thereof |
| CN111262273A (en) * | 2020-03-02 | 2020-06-09 | 西安交通大学 | Wind energy reactor system and working method thereof |
| CN114123332A (en) * | 2021-11-29 | 2022-03-01 | 金红 | Nuclear power and solar energy complementary power supply management system |
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