Joint frequency modulation method, system and equipment based on thermal power generating unit energy storage system

Abstract

The invention discloses a combined frequency modulation method, system and device based on a thermal power generating unit energy storage system. The method comprises the steps of obtaining historical output power data of a thermal power generating unit; on the basis of historical output power data, a joint frequency modulation model is constructed, the optimal output power of the energy storage system is simulated, and a power output database is generated; and inputting the real-time operation data of the thermal power generating unit into the combined frequency modulation model, and matching the real-time operation data with the data in the power output database to obtain a combined frequency modulation scheme. By introducing the energy storage system and utilizing the quick response characteristic of the energy storage system, the response speed of frequency modulation can be remarkably improved, the energy storage system can provide or absorb a large amount of electric energy in a short time, and therefore the output power of the thermal power generating unit is quickly adjusted to cope with fluctuation of the power grid frequency; and the frequency modulation range is wider and the precision is higher.

Description

Technical Field

[0001] This invention belongs to the field of thermal power generation technology, specifically relating to a joint frequency regulation method, system and equipment based on the energy storage system of thermal power units. Background Technology

[0002] In power systems, thermal power units are one of the main sources of power generation, and the stability and regulation capability of their output power are crucial to the frequency stability of the power grid. However, during operation, the output power of thermal power units often fluctuates due to factors such as load changes and fuel fluctuations, which poses a challenge to the frequency control of the power grid. To maintain the frequency stability of the power grid, effective frequency regulation methods are needed.

[0003] Traditional frequency regulation methods primarily rely on the inherent regulation capabilities of thermal power units, controlling output power by adjusting parameters such as fuel supply and steam flow. However, this method has a relatively slow response time and a limited adjustment range, making it difficult to meet the demands of modern power systems for rapid and accurate frequency regulation.

[0004] With the continuous development of energy storage technology, combining energy storage systems with thermal power units for joint frequency regulation has become a new trend. Energy storage systems have advantages such as fast response speed and wide adjustment range, which can effectively compensate for the shortcomings of thermal power units in frequency regulation. However, how to rationally construct a joint frequency regulation model to achieve optimized coordination between thermal power units and energy storage systems, so as to improve the frequency regulation effect and efficiency, is an urgent problem to be solved. Summary of the Invention

[0005] The purpose of this invention is to provide a joint frequency regulation method, system and equipment based on thermal power unit energy storage system, in order to solve the technical defects in the prior art of how to reasonably construct a joint frequency regulation model to achieve optimized coordination between thermal power unit and energy storage system in order to improve frequency regulation effect and efficiency.

[0006] To achieve the above objectives, the present invention employs the following technical solution: Firstly, a joint frequency regulation method based on a thermal power unit energy storage system is provided, including: Obtain historical output power data of thermal power units; Based on the historical output power data, a joint frequency regulation model is constructed, and the optimal output power of the energy storage system is simulated to generate a power output database. The real-time operating data of the thermal power unit is input into the joint frequency regulation model and matched with the data in the power output database to obtain the joint frequency regulation scheme.

[0007] Furthermore, the acquisition of historical output power data of thermal power units specifically includes: Multiple data acquisition devices are installed on the thermal power unit. A data acquisition network is established using the multiple data acquisition devices to obtain the historical output power data of the thermal power unit, as well as the maximum and minimum values ​​in the historical output power data. The acquired historical output power data, the maximum value and the minimum value in the historical output power data are processed to obtain a database of average historical output power data of multiple thermal power units.

[0008] Furthermore, after obtaining the average database of historical output power data from multiple thermal power units, the system also includes: Using the year as the dividing criterion, multiple data points in the average value database are divided into different years. Analyze the data trends in different years to identify the data characteristics and factors that cause data changes in different years.

[0009] Furthermore, based on the historical output power data, a joint frequency regulation model is constructed, and the optimal output power of the energy storage system is simulated to generate a power output database, specifically including: Based on historical output power data, a joint frequency regulation model is constructed, and the joint frequency regulation model is used to simulate the optimal output power of the energy storage system that matches different output power data. The optimal output power of multiple energy storage systems is marked and stored in the power output database.

[0010] Furthermore, the real-time operating data of the thermal power unit is input into the joint frequency regulation system and matched with the data in the power output database to obtain a joint frequency regulation scheme, specifically including: Based on the frequency regulation command, the real-time operating data of the thermal power unit is input into the joint frequency regulation model and matched with the data in the power output database to obtain the joint frequency regulation scheme. The joint frequency regulation scheme is then used to jointly regulate the frequency of the thermal power unit and the energy storage system.

[0011] Furthermore, it also includes: Based on the combined frequency regulation effect of thermal power units and energy storage systems, the combined frequency regulation scheme is optimized.

[0012] Secondly, a combined frequency regulation system based on a thermal power unit energy storage system is provided, including: The data acquisition module is used to acquire historical output power data of thermal power units; Modules for building joint frequency modulation models; The simulation module is used to simulate the optimal output power of the energy storage system; The matching module is used to match the real-time operating data of thermal power units with the data in the power output database; The scheme generation module is used to generate joint frequency modulation schemes.

[0013] Thirdly, a mobile device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the joint frequency regulation method based on a thermal power unit energy storage system as described above.

[0014] Fourthly, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the joint frequency regulation method based on the energy storage system of a thermal power unit as described above.

[0015] Fifthly, a computer program product is provided, including computer instructions that instruct a computing device to perform the operation corresponding to the joint frequency regulation method based on the thermal power unit energy storage system as described above.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By introducing energy storage systems and leveraging their rapid response characteristics, the response speed of frequency regulation can be significantly improved. Energy storage systems can provide or absorb large amounts of electrical energy in a short period of time, thereby quickly adjusting the output power of thermal power units to cope with fluctuations in grid frequency. The combined frequency regulation method combines the advantages of thermal power units and energy storage systems, resulting in a wider frequency regulation range and higher precision. Thermal power units provide a stable base power, while energy storage systems are responsible for rapid adjustment and precise control. The two complement each other, jointly improving the frequency regulation effect.

[0017] 2. By installing multiple data acquisition devices on thermal power units, a redundant data acquisition network can be formed to ensure the accuracy and reliability of the data. Even if a device malfunctions or the data is abnormal, other devices can still provide valid data, avoiding errors caused by a single data point.

[0018] 3. By dividing the data by year and analyzing the changing trends, we can reveal the changing patterns of the output power of thermal power units over time, which helps us understand the evolution of thermal power unit performance over time.

[0019] 4. By simulating the optimal output power of the energy storage system, efficient operation under varying output power demands can be ensured, helping to extend the system's lifespan, improve energy conversion efficiency, and reduce operating costs. The joint frequency regulation model comprehensively considers the performance of thermal power units and energy storage systems, achieving faster and more accurate frequency regulation by optimizing the energy storage system's output power. This helps improve the frequency stability of the power system and reduce losses caused by frequency fluctuations.

[0020] 5. By inputting real-time operating data of thermal power units into the joint frequency regulation model, the output power of thermal power units and energy storage systems can be adjusted in real time according to changes in grid frequency and frequency regulation commands. This real-time response mechanism ensures that the power system can quickly and accurately regulate frequency and maintain grid frequency stability when facing load fluctuations and emergencies.

[0021] 6. By optimizing the joint frequency regulation scheme based on feedback from actual operation data, the output power of thermal power units and energy storage systems can be matched more accurately, thereby improving the frequency regulation effect. The optimized scheme can better cope with grid frequency fluctuations, reduce frequency deviations, and improve grid stability and reliability. The optimization of the joint frequency regulation scheme means that the output power of thermal power units and energy storage systems can be more rationally allocated during frequency regulation. This helps to avoid energy waste, improve energy utilization efficiency, and reduce the operating costs of the power system. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 The flowchart of the joint frequency regulation method based on the energy storage system of thermal power unit provided by the present invention; Figure 2 The schematic diagram of the combined frequency regulation system based on the energy storage system of thermal power units provided by the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0030] In power systems, thermal power units are one of the main sources of power generation, and the stability and regulation capability of their output power are crucial to the frequency stability of the power grid. However, during operation, the output power of thermal power units often fluctuates due to factors such as load changes and fuel fluctuations, which poses a challenge to the frequency control of the power grid. To maintain the frequency stability of the power grid, effective frequency regulation methods are needed.

[0031] Traditional frequency regulation methods primarily rely on the inherent regulation capabilities of thermal power units, controlling output power by adjusting parameters such as fuel supply and steam flow. However, this method has a relatively slow response time and a limited adjustment range, making it difficult to meet the demands of modern power systems for rapid and accurate frequency regulation.

[0032] With the continuous development of energy storage technology, combining energy storage systems with thermal power units for joint frequency regulation has become a new trend. Energy storage systems have advantages such as fast response speed and wide adjustment range, which can effectively compensate for the shortcomings of thermal power units in frequency regulation. However, how to rationally construct a joint frequency regulation model to achieve optimized coordination between thermal power units and energy storage systems, so as to improve the frequency regulation effect and efficiency, is an urgent problem to be solved.

[0033] To address the aforementioned technical deficiencies, the inventors have provided a combined frequency regulation method, system, and equipment based on a thermal power unit energy storage system.

[0034] The present invention will now be described in further detail with reference to the accompanying drawings: In a first aspect, embodiments of the present invention provide a joint frequency regulation method based on a thermal power unit energy storage system, such as... Figure 1 As shown, it includes: S101. Obtain historical output power data of thermal power units; For example, multiple data acquisition devices are installed on the thermal power units, and a data acquisition network is established using these devices to obtain historical output power data, the maximum value, and the minimum value of the historical output power data. By installing multiple data acquisition devices on the thermal power units, a redundant data acquisition network can be formed, ensuring the accuracy and reliability of the data. Even if one device malfunctions or the data is abnormal, other devices can still provide valid data, avoiding errors caused by a single data point. Multiple data acquisition devices can simultaneously acquire historical output power data of thermal power units, including key information such as the maximum and minimum values, enabling a more comprehensive understanding of the operating status of the thermal power units and providing a rich data foundation for the subsequent construction of a joint frequency regulation model. The acquired historical output power data, the maximum value, and the minimum value of the historical output power data are processed to obtain an average value database of historical output power data from multiple thermal power units, which helps simplify the data analysis process and improve the efficiency of data processing. At the same time, the average value database can provide more stable and representative data input for the construction of the joint frequency regulation model. The average value database built based on the historical output power data of multiple thermal power units can reflect the overall operating characteristics of thermal power units, enhance the adaptability of the joint frequency regulation model, enable it to better adapt to the frequency regulation needs of different thermal power units, and improve the universality and reliability of the frequency regulation effect.

[0035] Furthermore, after obtaining a database of average historical output power data from multiple thermal power units, the model also includes dividing the data in the average database into different years based on the year, analyzing the data change trends in each year, and identifying the data characteristics and factors affecting data change in different years. By dividing the data by year and analyzing the change trends, the model can reveal the changing patterns of thermal power unit output power over time, and understand the evolution of thermal power unit performance over time. Simultaneously, data from different years may exhibit specific characteristics, such as a significant increase in output power in a particular year, or increased output power fluctuations due to fuel price volatility. Through analysis, these year-specific characteristics can be identified, providing targeted information for subsequent model building and decision-making. Moreover, by deeply analyzing the factors affecting data change in different years, the model can reveal key factors influencing the output power of thermal power units. These factors may include fuel quality, equipment aging, maintenance status, and market demand. Understanding these factors helps in developing more effective frequency regulation strategies and maintenance plans. Furthermore, a joint frequency regulation model considering year characteristics and data change factors can more accurately predict the future output power of thermal power units, helping to improve the accuracy and efficiency of frequency regulation and reduce frequency regulation costs caused by prediction errors.

[0036] S102. Based on the historical output power data, a joint frequency regulation model is constructed, and the optimal output power of the energy storage system is simulated to generate a power output database. For example, based on historical output power data, a joint frequency regulation model is constructed, and using this model, the optimal output power of the energy storage system matching different output power data is simulated. The optimal output power of multiple energy storage systems is marked and stored in the power output database. By simulating the optimal output power of the energy storage system, efficient operation of the energy storage system under different output power demands can be ensured, which helps extend the service life of the energy storage system, improve energy conversion efficiency, and reduce operating costs. The joint frequency regulation model can comprehensively consider the performance of thermal power units and energy storage systems. By optimizing the output power of the energy storage system, a faster and more accurate frequency regulation effect can be achieved, improving the frequency stability of the power system and reducing losses caused by frequency fluctuations. Furthermore, by storing the optimal output power of multiple energy storage systems, the system can quickly select the most suitable frequency regulation strategy according to real-time operating conditions and demands, improving the flexibility and reliability of the power system and enabling it to better cope with various emergencies and load changes. Finally, the power output database provides rich data support for data analysis. In-depth analysis of this data can reveal the operating patterns of thermal power units and energy storage systems, providing a scientific basis for subsequent model optimization, strategy formulation, and decision support.

[0037] S103. The real-time operating data of the thermal power units is input into the joint frequency regulation model and matched with the data in the power output database to obtain a joint frequency regulation scheme. For example, based on frequency regulation commands, the real-time operating data of the thermal power units is input into the joint frequency regulation model and matched with the data in the power output database to obtain a joint frequency regulation scheme. This scheme is then used to jointly regulate the frequency of the thermal power units and the energy storage system. By inputting the real-time operating data of the thermal power units into the joint frequency regulation model, the output power of the thermal power units and the energy storage system can be adjusted in real time according to changes in the grid frequency and frequency regulation commands. This real-time response mechanism ensures that the power system can quickly and accurately regulate the frequency in the face of load fluctuations and emergencies, maintaining the stability of the grid frequency. Simultaneously, the joint frequency regulation scheme fully considers the performance and constraints of the thermal power units and the energy storage system. By optimizing the output power of both, it achieves rational resource allocation, which not only improves energy utilization efficiency but also extends equipment lifespan and reduces operating costs. Furthermore, the joint frequency regulation scheme, based on historical output power data and real-time operational data, can more accurately determine the charging and discharging strategies of the energy storage system by matching the optimal output power in the power output database. This helps improve the efficiency and effectiveness of frequency regulation and reduces grid frequency fluctuations and losses caused by untimely or inaccurate frequency regulation. Through joint frequency regulation, thermal power units and energy storage systems can coordinate with each other to jointly cope with changes in grid frequency. This coordination mechanism can enhance the stability and reliability of the power system and reduce the risks caused by the failure or performance degradation of a single device.

[0038] Finally, based on the combined frequency regulation effect of thermal power units and energy storage systems, the combined frequency regulation scheme is optimized. Through feedback from actual operating data, the optimized scheme can more accurately match the output power of thermal power units and energy storage systems, thereby improving the frequency regulation effect. The optimized scheme can better cope with grid frequency fluctuations, reduce frequency deviations, and improve grid stability and reliability. Simultaneously, a reasonable frequency regulation scheme can reduce the operating load of thermal power units and energy storage systems, avoiding prolonged high-load operation of equipment, helping to extend equipment lifespan, reduce the frequency of equipment maintenance and replacement, and lower power system maintenance costs. Through continuous optimization of the combined frequency regulation scheme, the power system can better adapt to different operating environments and load demands, maintaining a stable frequency output whether facing peak or off-peak loads, thus improving the system's adaptability and flexibility.

[0039] Secondly, this embodiment provides a combined frequency regulation system based on a thermal power unit energy storage system, such as... Figure 2 As shown, it includes: The data acquisition module is used to acquire historical output power data of thermal power units; Modules for building joint frequency modulation models; The simulation module is used to simulate the optimal output power of the energy storage system; The matching module is used to match the real-time operating data of thermal power units with the data in the power output database; The scheme generation module is used to generate joint frequency modulation schemes.

[0040] When the above frequency regulation system is applied, it acquires historical output power data of thermal power units in real time or periodically, providing an accurate and comprehensive data foundation for subsequent analysis and decision-making of the joint frequency regulation system. The historical data reflects the operating characteristics and patterns of thermal power units, which helps to build a more accurate joint frequency regulation model.

[0041] A joint frequency regulation model was constructed, realizing the organic integration of thermal power units and energy storage systems, which improved the frequency regulation capability and stability of the power system. The model considers the dynamic characteristics, constraints, and coordination relationships between thermal power units and energy storage systems, providing a theoretical basis for subsequent simulation and optimization.

[0042] By simulating the optimal output power of an energy storage system, the charging and discharging strategies of the system can be optimized, improving energy utilization efficiency. The simulation results can provide guidance for the design and operation of the energy storage system, reducing equipment damage or energy waste caused by improper operation.

[0043] By matching real-time operating data of thermal power units with data in the power output database, real-time frequency regulation and historical data are organically combined. The matching process is fast and accurate, and can quickly respond to changes in grid frequency, thereby improving the timeliness and accuracy of frequency regulation.

[0044] Based on the matching results, a joint frequency regulation scheme is generated, providing clear guidance for the coordinated operation of thermal power units and energy storage systems. The scheme takes into account various factors, such as grid frequency, thermal power unit operating status, and energy storage system performance, ensuring the comprehensiveness and feasibility of the frequency regulation scheme.

[0045] Thirdly, a mobile device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the joint frequency regulation method based on a thermal power unit energy storage system as described above.

[0046] Fourthly, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, it implements the steps of the joint frequency regulation method based on the energy storage system of a thermal power unit as described above.

[0047] Fifthly, a computer program product is provided, including computer instructions that instruct a computing device to perform the operation corresponding to the joint frequency regulation method based on the thermal power unit energy storage system as described above.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit its scope of protection. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present invention, they can still make various changes, modifications or equivalent substitutions to the specific implementation of the invention, but these changes, modifications or equivalent substitutions are all within the scope of protection of the pending claims of the invention.

Claims

1. A joint frequency regulation method based on a thermal power unit energy storage system, characterized in that, include: Obtain historical output power data of thermal power units; Based on the historical output power data, a joint frequency regulation model is constructed, and the optimal output power of the energy storage system is simulated to generate a power output database. The real-time operating data of the thermal power unit is input into the joint frequency regulation model and matched with the data in the power output database to obtain the joint frequency regulation scheme.

2. The joint frequency regulation method based on the energy storage system of a thermal power unit according to claim 1, characterized in that, The acquisition of historical output power data of thermal power units specifically includes: Multiple data acquisition devices are installed on the thermal power unit. A data acquisition network is established using the multiple data acquisition devices to obtain the historical output power data of the thermal power unit, as well as the maximum and minimum values ​​in the historical output power data. The acquired historical output power data, the maximum value and the minimum value in the historical output power data are processed to obtain a database of average historical output power data of multiple thermal power units.

3. The joint frequency regulation method based on the energy storage system of a thermal power unit according to claim 2, characterized in that, After obtaining the average database of historical output power data from multiple thermal power units, the following is also included: Using the year as the dividing criterion, multiple data points in the average value database are divided into different years. Analyze the data trends in different years to identify the data characteristics and factors that cause data changes in different years.

4. The joint frequency regulation method based on the energy storage system of a thermal power unit according to claim 1, characterized in that, Based on the historical output power data, a joint frequency regulation model is constructed, and the optimal output power of the energy storage system is simulated to generate a power output database, specifically including: Based on historical output power data, a joint frequency regulation model is constructed, and the joint frequency regulation model is used to simulate the optimal output power of the energy storage system that matches different output power data. The optimal output power of multiple energy storage systems is marked and stored in the power output database.

5. The joint frequency regulation method based on the energy storage system of a thermal power unit according to claim 1, characterized in that, The real-time operating data of the thermal power unit is input into the joint frequency regulation system and matched with the data in the power output database to obtain a joint frequency regulation scheme, which specifically includes: Based on the frequency regulation command, the real-time operating data of the thermal power unit is input into the joint frequency regulation model and matched with the data in the power output database to obtain the joint frequency regulation scheme. The joint frequency regulation scheme is then used to jointly regulate the frequency of the thermal power unit and the energy storage system.

6. The joint frequency regulation method based on the energy storage system of a thermal power unit according to claim 1, characterized in that, Also includes: Based on the combined frequency regulation effect of thermal power units and energy storage systems, the combined frequency regulation scheme is optimized.

7. A combined frequency regulation system based on a thermal power unit energy storage system, characterized in that, include: The data acquisition module is used to acquire historical output power data of thermal power units; Modules for building joint frequency modulation models; The simulation module is used to simulate the optimal output power of the energy storage system; The matching module is used to match the real-time operating data of thermal power units with the data in the power output database; The scheme generation module is used to generate joint frequency modulation schemes.

8. A mobile device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the joint frequency regulation method based on the energy storage system of thermal power units as described in any one of claims 1-6.

9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the joint frequency regulation method based on the energy storage system of a thermal power unit as described in any one of claims 1-6.

10. A computer program product comprising computer instructions, characterized in that, The computer instructions instruct the computing device to perform the operation corresponding to the joint frequency regulation method based on the energy storage system of thermal power units as described in any one of claims 1-6.

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