A method for simulating wind power fluctuation of a hydrogen production and storage system prototype

Abstract

The application provides a kind of hydrogen production and storage system prototype wind power fluctuation simulation method, comprising the following steps: determining the time history curve of wind turbine power generation power;The time history curve of wind turbine power generation power is scaled, and the time history curve of wind turbine power generation power is obtained according to the scaling result;Determine the power change function of the developed prototype;According to the power change function and the time history curve of wind turbine power generation power, the time history curve of current or voltage of hydrogen production and storage prototype in fluctuation simulation test is obtained;The host computer software instruction generation and test are generated, so as to complete the power fluctuation simulation;The beneficial effects of the application are that: the application can combine the power data of wind turbine and hydrogen production and storage prototype, realize the power fluctuation simulation under the condition of no external programmable power supply through comprehensive processing, and the hydrogen production and storage power fluctuation simulation not only depends on the fluctuation characteristics provided by wind turbine, but also considers the relationship between hydrogen production and storage power and current or voltage variation, so as to achieve more accurate power simulation.

Description

Technical Field

[0001] This invention relates to the field of new energy technology, and in particular to a method for simulating wind power fluctuations in a prototype hydrogen production and storage system. Background Technology

[0002] With the increasing severity of global climate change and the continuous depletion of fossil fuel resources, developing new energy sources has become a consensus among governments, enterprises, and social organizations worldwide. New energy sources include various forms such as wind power, solar power, biomass energy, and geothermal energy. In recent years, the global new energy industry has been expanding rapidly. According to data from the International Energy Agency (IEA), global wind and solar power installed capacity has shown a sustained and rapid growth trend, and many countries have set ambitious new energy development goals. For example, China has set a target of non-fossil energy accounting for 25% of primary energy consumption by 2030, while the United States and Europe are also actively promoting the development of renewable energy. Achieving these goals will require substantial new energy infrastructure construction and technological innovation. However, with the rapid expansion of new energy installed capacity, the problem of new energy consumption is becoming increasingly prominent. Due to the significant randomness and intermittency of wind and solar energy, the stability and reliability of the power grid face challenges. New energy power generation often does not match the peak of electricity demand, leading to overcapacity at certain times. For example, wind power generation at night and during the spring and autumn seasons may far exceed load demand, resulting in wind and solar power curtailment. To effectively solve this problem, it is urgent to find new ways to store and utilize these excess renewable energy sources.

[0003] Hydrogen production technology is considered one of the effective ways to solve the problem of renewable energy consumption. Hydrogen energy has the characteristics of high energy density and cleanliness, and can be widely used as a chemical raw material or fuel in industry, transportation, and energy storage. Hydrogen production through water electrolysis converts excess electricity into hydrogen for storage, which can reduce the curtailment of wind and solar power generation and provide a guarantee for the widespread application of hydrogen energy. Therefore, renewable energy hydrogen production has become an important technological direction for promoting renewable energy consumption. Due to the volatility and intermittency of renewable energy sources, there are still some technical challenges in renewable energy hydrogen production and storage projects. The output power of wind and solar power varies significantly, and the hydrogen production system needs to have good adaptability to cope with this volatility. If power fluctuations cannot be effectively handled, it may lead to reduced operating efficiency of the hydrogen production system, increased equipment wear, and even affect the reliability and safety of the system. Therefore, it is essential to develop a functional prototype for testing and verification before the implementation of renewable energy hydrogen production and storage demonstration projects and commercial applications. However, due to factors such as cost, prototype hydrogen production and storage systems are often too small to be matched with actual wind turbines for power fluctuation simulation testing. Therefore, it is usually necessary to purchase additional programmable power supplies to regulate the current, voltage, and other information supplied to the prototypes in order to conduct effective testing and experiments. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a simulation method for wind power fluctuations in a prototype hydrogen production and storage system. This method addresses the issue that the output power of wind power in the prior art varies significantly, and the hydrogen production system needs to have good adaptability to cope with this fluctuation. If the fluctuations in power cannot be effectively handled, it may lead to reduced operating efficiency of the hydrogen production system, increased equipment wear, and even affect the reliability and safety of the system.

[0005] To achieve the above and other related objectives, the present invention provides the following technical solution:

[0006] A method for simulating wind power fluctuations in a hydrogen production and storage system prototype includes the following steps: determining the time-history curve of wind turbine power generation; scaling the time-history curve of wind turbine power generation to obtain a time-history curve of wind turbine power generation matching the rated power of the wind turbine and the rated operating power of the prototype; determining the correspondence between current and voltage of the prototype and obtaining the power variation function of the prototype based on the correspondence, wherein the power variation function includes functions of current-power and voltage-power; obtaining the time-history curve of current or voltage of the hydrogen production and storage prototype in the fluctuation simulation test based on the power variation function and the time-history curve of the wind turbine power generation; converting the time-history curve of current or voltage into an instruction file corresponding to the host computer control software language of the prototype and inputting it for testing, thereby completing the simulation of power fluctuations.

[0007] In one embodiment of the present invention, determining the time-history curve of wind turbine power generation includes: determining the wind turbine model and project site to be adopted in the overall project plan, and determining the time-history curve of wind turbine power generation based on the performance curve of the wind turbine model and the actual local wind speed.

[0008] In one embodiment of the present invention, determining the time-history curve of wind turbine power generation further includes: obtaining the time-history curve of wind turbine power generation through monitoring during the operation of the wind turbines that have been put into operation.

[0009] In one embodiment of the present invention, scaling the time-history curve of the wind turbine power generation and obtaining a time-history curve of the wind turbine power generation that matches the rated power of the wind turbine and the rated operating power of the prototype based on the scaling result includes: obtaining the rated operating power of the prototype, scaling the time-history curve of the wind turbine power generation based on the rated operating power of the prototype, and obtaining a time-history curve of the wind turbine power generation that matches the rated power of the wind turbine and the rated operating power of the prototype based on the scaling result.

[0010] In one embodiment of the present invention, determining the correspondence between the current and voltage of the prototype and obtaining the power change function of the prototype based on the correspondence includes: within a specified temperature range, adjusting the current or voltage of the prototype and recording the magnitude of its voltage or current to obtain the correspondence between the current and voltage of the prototype; then calculating the product of the current and voltage to obtain the power of the prototype; and fitting a current-power or voltage-power function.

[0011] In one embodiment of the present invention, obtaining the time-history curve of the current or voltage of the hydrogen production and storage prototype in the fluctuation simulation test based on the power change function and the time-history curve of the assumed wind turbine power generation includes: substituting the power change function into the time-history curve of the assumed wind turbine power generation, and obtaining the time-history curve of the current or voltage of the hydrogen production and storage prototype in the fluctuation simulation test based on the substitution result.

[0012] In one embodiment of the present invention, substituting the power change function into the time-history curve of the assumed wind turbine power generation, and obtaining the time-history curve of the current or voltage of the hydrogen production and storage prototype in the fluctuation simulation test based on the substitution result, includes: making the assumed wind turbine power generation equal to the working power of the hydrogen production and storage prototype, and then eliminating the power parameter to obtain the time-history curve of the current or voltage of the hydrogen production and storage prototype in the fluctuation simulation test.

[0013] As described above, the method for simulating wind power fluctuations in a hydrogen production and storage system prototype according to the present invention has the following beneficial effects:

[0014] This invention combines power data from wind turbines and hydrogen production and storage prototypes, and through comprehensive processing, achieves power fluctuation simulation without an external programmable power supply. The simulation of hydrogen production and storage power fluctuations not only depends on the fluctuation characteristics provided by the wind turbine, but also considers the relationship between the hydrogen production and storage power and the changes in current or voltage, thus achieving a more accurate power simulation. Therefore, this invention can reduce dependence on external equipment, reduce testing complexity and cost, accurately reflect the performance of the prototype under actual wind power fluctuation conditions, improve the accuracy and efficiency of testing, and provide a solid technical foundation for commercial applications. Attached Figure Description

[0015] Figure 1 This is an overall flowchart of the simulation method for wind power fluctuation of the hydrogen production and storage system prototype disclosed in this embodiment of the invention;

[0016] Figure 2 This is a time-history curve of wind turbine power generation in the simulation method for wind power fluctuation of the hydrogen production and storage system prototype disclosed in this embodiment of the invention.

[0017] Figure 3 This is a time-history curve of the wind turbine power generation in the simulation method for wind power fluctuation of the hydrogen production and storage system prototype disclosed in this embodiment of the invention.

[0018] Figure 4 The diagram shows the current-power curve of the hydrogen production and storage prototype in the simulation method for wind power fluctuation of the hydrogen production and storage system prototype disclosed in this embodiment of the invention.

[0019] Figure 5 The figure shown is a current-time history curve of the power fluctuation simulation test in the simulation method of wind power fluctuation of the hydrogen production and storage system prototype disclosed in the embodiments of the present invention. Detailed Implementation

[0020] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features described herein can be combined with each other.

[0021] This invention relates to a method for simulating wind power fluctuations in a prototype hydrogen production and storage system, the process of which is as follows: Figure 1 As shown, the details are as follows:

[0022] Step 101: Determine the time-history curve of the wind turbine's power generation.

[0023] Specifically, the first step is to determine the wind turbine model and project site to be used in the overall project plan. Then, based on the performance curve of the wind turbine model and the actual local wind speed, the time-history curve of the wind turbine's power generation is determined.

[0024] More specifically, based on the proposed wind turbine model and project site, the time-history curve of the wind turbine's power generation is calculated by substituting the actual local wind speed into the performance curve of the wind turbine model; among which, , The curve representing the change in wind turbine power generation over time is called the time-history curve of wind turbine power generation. A curve showing how the power generation of a wind turbine changes with wind speed; The curve representing the change of local wind speed over time provides a useful reference for simulating power fluctuation characteristics.

[0025] Furthermore, the time-history curve of wind turbine power generation can also be obtained through monitoring during the operation of wind turbines that have been put into operation.

[0026] Step 102: Scale the time-history curve of the wind turbine's power generation, and obtain the time-history curve of the wind turbine's power generation that matches the rated power of the wind turbine and the rated operating power of the prototype based on the scaling result.

[0027] Specifically, the rated operating power of the prototype is obtained, and the time-history curve of the wind turbine's power generation is scaled down based on the rated operating power of the prototype. Based on the scaling result, a time-history curve of the wind turbine's power generation, matching the envisioned rated power generation of the wind turbine with the rated operating power of the prototype, is obtained. , This represents the curve showing the change in the power generation capacity of the envisioned wind turbine over time, which is the time-history curve of the envisioned wind turbine power generation capacity. Indicates the rated operating power of the prototype; This indicates the rated power generation capacity of the wind turbine; A time-history curve representing the power generation capacity of a wind turbine.

[0028] Step 103: Determine the correspondence between the current and voltage of the prototype and obtain the power change function of the prototype based on the correspondence.

[0029] Specifically, the power change function includes functions of current-power and voltage-power. Within a specified temperature range, the current or voltage of the prototype is adjusted and its magnitude is recorded to obtain the corresponding relationship between the current and voltage of the prototype. Then, the prototype power is obtained by calculating the product of current and voltage, and a function of current-power or voltage-power is fitted. T represents temperature, U represents voltage, and I represents current; function and These represent the relationship between power and current or voltage, respectively, and their functional relationships will also change with temperature.

[0030] Step 104: Obtain the time-history curve of current or voltage of hydrogen production and storage prototype in the fluctuation simulation test based on the power change function and the time-history curve of the assumed wind turbine power generation.

[0031] Specifically, by substituting the power change function into the time-history curve of the assumed wind turbine power generation, the time-history curve of the current or voltage of the hydrogen production and storage prototype in the fluctuation simulation test is obtained based on the substitution result. That is, the curve of current or voltage changing with time.

[0032] More specifically, the hypothetical wind turbine power generation capacity is made equal to the operating power of the hydrogen production and storage prototype, and then the power parameter is eliminated to obtain the time-history curves of the current or voltage of the hydrogen production and storage prototype in the fluctuation simulation test; among which, , and The time-history curves represent current and voltage, respectively.

[0033] Step 105: Convert the time-history curve of current or voltage into an instruction file corresponding to the host computer control software language of the prototype and input it for testing, thereby completing the simulation of power fluctuation.

[0034] In practical applications, this invention is used to simulate power fluctuations in the testing of wind power-to-hydrogen-storage prototypes, providing important technical support for research and application in the field of new energy. To implement this invention, the wind speed time-history curves at the site are first collected from a database or on-site, and then substituted to obtain the time-history curve of the wind turbine's power generation. Then, based on the wind turbine's power generation time-history curve, the envisioned wind turbine power generation time-history curve is obtained. Next, the prototype's own current or voltage regulation function is used to perform voltage and current tests, thereby establishing a model of the relationship between power and current or voltage. During the simulation testing phase, the time-history curves of current or voltage are analyzed. Finally, an instruction file suitable for upper-level computer software is generated and input into the prototype for actual power fluctuation simulation.

[0035] It should be noted that the time-history curve of wind turbine power generation is either obtained through monitoring during the operation of the installed wind turbines, or calculated based on known wind turbine performance parameters and local measured wind speeds. For simplicity, this invention sets the time-history curve of the power generation of a 15MW wind turbine in the specific embodiment as a sinusoidal fluctuation function, such as... Figure 2 As shown, ;

[0036] The rated operating power of the hydrogen production and storage prototype is 10kW. Based on the ratio to the rated power of the wind turbine, a time-history curve of the wind turbine's power generation, matching the power of the hydrogen production and storage prototype, is obtained, as shown below. Figure 3 As shown, ;

[0037] The hydrogen production and storage prototype was kept at a temperature of 65℃ during operation. By gradually adjusting the current, the power of the prototype was calculated. Based on the data points, a power-current curve was obtained, as shown below. Figure 4 As shown;

[0038] By equating the hypothetical wind turbine's power generation capacity with that of the hydrogen production and storage prototype, the power parameter is eliminated, resulting in the time-history curve of the hydrogen production and storage prototype's current, i.e., the curve showing the change of current over time. Figure 5 As shown.

[0039] In summary, the method of this invention enables a hydrogen production and storage prototype to simulate power fluctuations by actively setting the current, thus verifying its performance under real wind power fluctuation conditions and providing technical support for commercial applications. This method establishes a relationship model between the wind turbine's power generation time-history curve and the prototype's power, allowing the prototype to operate under different power input conditions, thereby improving the accuracy and practicality of the test. This contributes to the development of new energy hydrogen production technology and provides a reliable solution for achieving more efficient new energy consumption. Furthermore, this invention can directly simulate power fluctuations through the prototype's own current or voltage regulation function, reducing reliance on external equipment and lowering test complexity and cost.

[0040] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this invention should still be covered by the claims of this invention.

Claims

1. A method for simulating wind power fluctuations in a prototype hydrogen production and storage system, characterized in that, Includes the following steps: Determine the time-history curve of wind turbine power generation; The time-history curve of the wind turbine's power generation is scaled up and down, and the time-history curve of the wind turbine's power generation that matches the rated power of the wind turbine and the rated operating power of the prototype is obtained based on the scaling result. The correspondence between the current and voltage of the prototype is determined, and the power change function of the prototype is obtained based on the correspondence, wherein the power change function includes functions of current-power and voltage-power; The current or voltage time-history curve of the hydrogen production and storage prototype in the fluctuation simulation test is obtained based on the power change function and the time-history curve of the assumed wind turbine power generation. The time-history curves of the current or voltage are converted into instruction files corresponding to the host computer control software language of the prototype and input for testing, thereby completing the simulation of power fluctuations. The process of scaling the time-history curve of the wind turbine's power generation, and obtaining a time-history curve of the wind turbine's power generation that matches the rated power of the wind turbine and the rated operating power of the prototype based on the scaling result, includes: The rated operating power of the prototype is obtained, and the time-history curve of the wind turbine's power generation is scaled up or down according to the rated operating power of the prototype. Based on the scaling result, the time-history curve of the wind turbine's power generation that matches the rated operating power of the prototype is obtained. Specifically, , This represents the curve showing the change in the power generation capacity of the envisioned wind turbine over time, which is the time-history curve of the envisioned wind turbine power generation capacity. Indicates the rated operating power of the prototype; This indicates the rated power generation capacity of the wind turbine; A time-history curve representing the power generation capacity of a wind turbine; The process of determining the correspondence between the current and voltage of the prototype and obtaining the power change function of the prototype based on the correspondence includes: Within a specified temperature range, the current or voltage of the prototype is adjusted and its magnitude is recorded to obtain the corresponding relationship between the current and voltage of the prototype. Then, the power of the prototype is obtained by calculating the product of the current and voltage, and a current-power or voltage-power function is fitted.

2. The method for simulating wind power fluctuations in a hydrogen production and storage system prototype according to claim 1, characterized in that: The time-history curve for determining the wind turbine's power generation includes: Determine the wind turbine model and project site to be used in the overall project plan, and determine the time history curve of the wind turbine power generation based on the performance curve of the wind turbine model and the actual local wind speed.

3. The method for simulating wind power fluctuations in a hydrogen production and storage system prototype according to claim 2, characterized in that: The time-history curve for determining the wind turbine's power generation also includes: The power generation curves of the wind turbines were obtained through monitoring during their operation.

4. The method for simulating wind power fluctuations in a hydrogen production and storage system prototype according to claim 1, characterized in that: The process of obtaining the time-history curves of the current or voltage of the hydrogen production and storage prototype in the fluctuation simulation test based on the power change function and the time-history curve of the assumed wind turbine power generation includes: Substituting the power change function into the time-history curve of the assumed wind turbine power generation, the time-history curve of the current or voltage of the hydrogen production and storage prototype in the fluctuation simulation test is obtained based on the substitution result.

5. The method for simulating wind power fluctuations in a hydrogen production and storage system prototype according to claim 4, characterized in that: The step of substituting the power change function into the time-history curve of the assumed wind turbine power generation, and obtaining the time-history curve of the current or voltage of the hydrogen production and storage prototype in the fluctuation simulation test based on the substitution result, includes: The assumed wind turbine power generation capacity is made equal to the operating power of the hydrogen production and storage prototype. Then, the power parameter is eliminated to obtain the time history curve of the current or voltage of the hydrogen production and storage prototype in the fluctuation simulation test.

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