Method and related system for analyzing electric power and electric quantity regulation capability of pumped storage service power grid

Abstract

The invention belongs to the field of electric power systems and automation thereof, and discloses a pumped storage service power grid electric power quantity adjustment capability analysis method and a related system.By combining historical operation data and real-time monitoring parameters, the adjustable capability of a pumped storage power station under different water level, output and load conditions can be dynamically reflected, and the adjustment capability of the pumped storage power station is improved. Compared with a traditional evaluation method depending on constant energy conversion efficiency, the result better conforms to the actual operation state. According to the method, the real-time electric quantity adjusting capacity of power generation and water pumping can be calculated respectively, the intra-day electric power adjusting capacity index is comprehensively formed, and the response capacity and the bidirectional adjusting potential of the pumping and storage unit in the power grid peak regulation process are reflected. By introducing reservoir capacity test data, the method can accurately describe the corresponding relation among the water level, the reservoir capacity and the output, the problem of energy conversion efficiency deviation caused by neglecting water head changes is avoided, and the method is suitable for pumped storage power stations of different types and scales.

Description

Technical Field

[0001] This invention belongs to the field of power systems and automation, specifically relating to a method and related system for analyzing the power regulation capacity of pumped storage service grids. Background Technology

[0002] Pumped storage is currently the most technologically mature, economically optimal, and best suited for large-scale development of a green, low-carbon, clean, and flexible power source. Through pumping and power generation, it provides flexible regulation services such as peak power output according to system needs, ensuring the safe and stable operation of the power system and serving as a crucial guarantee for the large-scale development of renewable energy. Active power regulation capability is a significant component of the flexible regulation services provided by pumped storage.

[0003] Power regulation capacity refers to the generating capacity provided by the upper reservoir and the pumping capacity provided by the lower reservoir of a pumped-storage power station. Power regulation capacity refers to the active power of the pumped-storage units in generating and pumping water, which the station's stored energy can support. Power regulation capacity is primarily used as fundamental data for pumped-storage's participation in power supply balancing and renewable energy consumption, supporting grid balance and security regulation needs. Currently, the evaluation methods for pumped-storage power regulation capacity are mainly based on full-load test data, calculating the generating capacity at different water levels with a constant unit water consumption and power generation. The evaluation methods for power regulation capacity are mainly based on the water level stratification method or the water level centroid fitting method to calculate the pumped-storage station's stored energy, and evaluating the power regulation capacity with a constant or preset energy conversion efficiency. However, the efficiency of the power generation process and the overall efficiency are related to multiple factors such as water head, are not constant, and are difficult to preset. Therefore, the accuracy of current evaluations of the power regulation capacity of pumped-storage serving the power grid is insufficient. Summary of the Invention

[0004] The purpose of this invention is to overcome the problem of insufficient accuracy in assessing the power regulation capacity of pumped storage service grids, and to provide a method and related system for analyzing the power regulation capacity of pumped storage service grids.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a method for analyzing the power regulation capability of a pumped storage service grid, comprising the following steps: Acquire real-time operation data, historical operation data, and reservoir capacity test data of pumped storage power stations; Based on the real-time operation data, historical operation data and reservoir capacity test data of the pumped storage power station, calculate the real-time power generation regulation capacity of the pumped storage power station; Based on the real-time operation data, historical operation data and reservoir capacity test data of the pumped storage power station, calculate the real-time pumpable water and electricity regulation capacity of the pumped storage power station. Based on the real-time power generation regulation capacity and real-time pumping capacity regulation capacity of the pumped storage power station, the daily power regulation capacity of the pumped storage power station is obtained.

[0006] A further improvement of the present invention is that the historical operating data of the pumped storage power station includes upper reservoir water level data, lower reservoir water level data, unit operating condition data, power generation active power data, and pumping active power data. The real-time operating data of the pumped storage power station includes the current water level data of the upper reservoir and the current water level data of the lower reservoir; The reservoir capacity test data includes the correspondence between the water level and capacity of the upper reservoir, the correspondence between the water level and capacity of the lower reservoir, and the dead water level and normal storage water level of both the upper and lower reservoirs.

[0007] A further improvement of this invention lies in the following method for calculating the real-time power generation regulation capacity of a pumped storage power station based on real-time operating data, historical operating data, and reservoir capacity test data: Based on the changes in reservoir capacity corresponding to the changes in upper reservoir water level data between two adjacent moments in historical operation data, and the power generation obtained by integrating the active power of the generating unit over the interval time, a relationship model between the upper reservoir water level of the pumped storage power station and the power generation per unit water consumption is constructed, and the power generation per unit water consumption is obtained as a function of water level. Based on the function of unit water consumption and power generation with respect to water level, and combined with real-time operating data, the unit water consumption and power generation at each water level is integrated within the water level range corresponding to the available power generation capacity to calculate the real-time adjustable power generation capacity at the current water level.

[0008] A further improvement of this invention lies in the following method for calculating the real-time pumpable power regulation capacity of a pumped storage power station based on real-time operating data, historical operating data, and reservoir capacity test data: Based on the changes in reservoir capacity corresponding to the changes in reservoir water level data between two adjacent moments in historical operation data, and the pumping power obtained by integrating the pumping active power of the unit over the interval time, calculate the unit water consumption pumping power at that water level. Based on the unit water consumption and pumping power at different water levels, a relationship model between the reservoir water level and the unit water consumption and pumping power of the pumped storage power station is constructed, and the function of the unit water consumption and pumping power with respect to the water level is obtained. Based on the function of unit water consumption pumping power with respect to water level, and combined with real-time operating data, the unit water consumption pumping power is integrated within the water level range corresponding to the available pumping capacity, and the real-time pumping power regulation capacity at the current water level is calculated.

[0009] A further improvement of this invention lies in the following method for obtaining the intraday power regulation capacity of a pumped storage power station based on its real-time power generation regulation capacity and real-time pumpable power regulation capacity: Obtain historical data on the water levels of the upper and lower reservoirs, and construct a relationship model between the water levels of the upper and lower reservoirs based on this data. Based on the relationship model between the upper and lower reservoir water levels, and combined with the real-time reservoir water level, the real-time generating capacity and pumpable capacity are calculated. Based on the real-time available power generation and pumpable power, combined with the real-time available power generation regulation capacity and real-time available pumpable power regulation capacity of the pumped storage power station and the daily power generation plan of the pumped storage unit, the available power generation and available pumpable power at each time of day are calculated. The daily power generation and pumping capacity of the pumped storage power station are verified at each time point during the day to obtain the daily power regulation capacity.

[0010] Secondly, the present invention provides a power regulation capability analysis system for pumped storage service grids, comprising: The data acquisition module is used to acquire real-time operating data, historical operating data, and reservoir capacity test data of the pumped storage power station. The power generation regulation capacity calculation module is used to calculate the real-time power generation regulation capacity of the pumped storage power station based on the real-time operation data, historical operation data and reservoir capacity test data of the pumped storage power station. The pumping power regulation capacity calculation module is used to calculate the real-time pumpable power regulation capacity of the pumped storage power station based on the real-time operation data, historical operation data and reservoir capacity test data of the pumped storage power station. The verification module is used to obtain the daily power regulation capacity of the pumped storage power station based on its real-time power generation regulation capacity and real-time pumping power regulation capacity.

[0011] A further improvement of this invention is that the data acquisition module is used to collect the current water level data of the upper reservoir and the lower reservoir as real-time operating data of the pumped storage power station; it is used to collect the water level data of the upper reservoir, the water level data of the lower reservoir, the unit operating condition data, the power generation active power data, and the pumping active power data as historical operating data of the pumped storage power station; and it is used to collect the correspondence data between the reservoir water level and the reservoir capacity, the correspondence data between the lower reservoir water level and the reservoir capacity, and the dead water level and normal storage water level data of the upper and lower reservoirs as reservoir capacity test data.

[0012] A further improvement of this invention is that the function of the power generation regulation capability calculation module is implemented through the following method: Based on the changes in reservoir capacity corresponding to the changes in upper reservoir water level data between two adjacent moments in historical operation data, and the power generation obtained by integrating the active power of the generating unit over the interval time, a relationship model between the upper reservoir water level of the pumped storage power station and the power generation per unit water consumption is constructed, and the power generation per unit water consumption is obtained as a function of water level. Based on the function of unit water consumption and power generation with respect to water level, and combined with real-time operating data, the unit water consumption and power generation at each water level is integrated within the water level range corresponding to the available power generation capacity to calculate the real-time adjustable power generation capacity at the current water level.

[0013] A further improvement of this invention is that the function of the pumping power regulation capacity calculation module is implemented through the following method: Based on the changes in reservoir capacity corresponding to the changes in reservoir water level data between two adjacent moments in historical operation data, and the pumping power obtained by integrating the pumping active power of the unit over the interval time, calculate the unit water consumption pumping power at that water level. Based on the unit water consumption and pumping power at different water levels, a relationship model between the reservoir water level and the unit water consumption and pumping power of the pumped storage power station is constructed, and the function of the unit water consumption and pumping power with respect to the water level is obtained. Based on the function of unit water consumption pumping power with respect to water level, and combined with real-time operating data, the unit water consumption pumping power is integrated within the water level range corresponding to the available pumping capacity, and the real-time pumping power regulation capacity at the current water level is calculated.

[0014] A further improvement of this invention is that the function of the verification module is implemented through the following method: Obtain historical data on the water levels of the upper and lower reservoirs, and construct a relationship model between the water levels of the upper and lower reservoirs based on this data. Based on the relationship model between the upper and lower reservoir water levels, and combined with the real-time reservoir water level, the real-time generating capacity and pumpable capacity are calculated. Based on the real-time available power generation and pumpable power, combined with the real-time available power generation regulation capacity and real-time available pumpable power regulation capacity of the pumped storage power station and the daily power generation plan of the pumped storage unit, the available power generation and available pumpable power at each time of day are calculated. The daily power generation and pumping capacity of the pumped storage power station are verified at each time point during the day to obtain the daily power regulation capacity.

[0015] Thirdly, the present invention provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of a method for analyzing the power regulation capacity of a pumped storage service grid.

[0016] Fourthly, the present invention provides a storage medium storing a computer program thereon, wherein the computer program, when executed by a processor, implements the steps of a method for analyzing the power regulation capacity of a pumped storage service grid.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention, by combining historical operational data with real-time monitoring parameters, dynamically reflects the adjustability of pumped-storage power stations under different water levels, output, and load conditions. Compared to traditional evaluation methods that rely on constant energy conversion efficiency, the results are more consistent with actual operating conditions. This invention calculates the real-time power regulation capacity of both generating and pumping capabilities separately, comprehensively forming an intraday power regulation capacity index that reflects both the response capability and bidirectional regulation potential of pumped-storage units during grid peak shaving. By incorporating reservoir capacity test data, this invention accurately describes the correspondence between water level, reservoir capacity, and output, avoiding the energy conversion efficiency deviation caused by head changes, and is applicable to pumped-storage power stations of different types and scales. This invention provides grid dispatch centers with precise adjustable power boundaries for pumped-storage power stations at different times, providing quantitative basis for peak shaving, frequency regulation, and reserve capacity configuration, improving the economy and security of power system operation. By continuously acquiring and updating operational data, the model can adaptively correct itself according to changes in power station operating characteristics and seasonal hydrological conditions, improving the stability and reliability of long-term evaluations. In conclusion, this invention can solve the problems of static assumptions, neglect of water level influence, and ambiguity of regulation capacity boundaries in the traditional assessment of the power regulation capacity of pumped storage power stations from the data level, and realize a dynamic, accurate and verifiable assessment of the regulation capacity of the pumped storage power grid. Attached Figure Description

[0018] Figure 1 This is a flowchart of the present invention; Figure 2 This is a system diagram of the present invention; Figure 3 A flowchart for the module that calculates the power generation regulation capability; Figure 4 A flowchart for the module that calculates the pumping power regulation capacity; Figure 5 The flowchart for the verification module; Figure 6 This is a system diagram of Example 6. Detailed Implementation

[0019] To further understand the content of this invention, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0020] Example 1: See Figure 1A method for analyzing the power regulation capacity of a pumped storage service grid includes the following steps: S1 acquires real-time operation data, historical operation data, and reservoir capacity test data of the pumped storage power station.

[0021] S2, based on the real-time operation data, historical operation data and reservoir capacity test data of the pumped storage power station, calculate the real-time power generation regulation capacity of the pumped storage power station.

[0022] S3. Based on the real-time operation data, historical operation data and reservoir capacity test data of the pumped storage power station, calculate the real-time pumpable power regulation capacity of the pumped storage power station.

[0023] S4. Based on the real-time power generation regulation capacity and real-time pumping power regulation capacity of the pumped storage power station, the daily power regulation capacity of the pumped storage power station is obtained.

[0024] This embodiment dynamically calculates the power generation and pumping capacity regulation capabilities by integrating historical operating data of pumped-storage power stations and reservoir capacity test data, comprehensively forming an intraday power regulation capacity index. Compared with traditional static assessments that rely on rated parameters, this method accurately reflects the impact of water level and head changes on power output, improving the real-time performance and accuracy of regulation capacity assessment. This method achieves quantitative analysis of the bidirectional regulation capacity of pumped-storage units, providing data support for grid peak shaving, frequency regulation, and reserve optimization. It overcomes the problems of insufficient accuracy and poor adaptability in traditional assessments, significantly improving the level of regulation capacity analysis for pumped-storage power grids.

[0025] Example 2: See Figure 2 A power regulation capacity analysis system for pumped storage service grids, comprising: The data acquisition module is used to acquire real-time operating data, historical operating data, and reservoir capacity test data of the pumped storage power station.

[0026] The power generation regulation capacity calculation module is used to calculate the real-time power generation regulation capacity of the pumped storage power station based on real-time operation data, historical operation data and reservoir capacity test data.

[0027] The pumping power regulation capacity calculation module is used to calculate the real-time pumpable power regulation capacity of the pumped storage power station based on the real-time operation data, historical operation data and reservoir capacity test data of the pumped storage power station.

[0028] The verification module is used to obtain the daily power regulation capacity of the pumped storage power station based on its real-time power generation regulation capacity and real-time pumping power regulation capacity.

[0029] This embodiment integrates historical operational data and reservoir capacity test data through a data acquisition module, achieving comprehensive perception of water level and head changes and unit operating characteristics, thus improving the accuracy and completeness of the data. The power generation and pumping capacity regulation capability calculation modules quantify the unit's output boundaries under different operating conditions, accurately reflecting its bidirectional regulation potential and avoiding the biases of traditional assessments based solely on theoretical parameters. The verification module integrates the capabilities of both power generation and pumping, dynamically generating intraday regulation capability curves, providing a reliable basis for grid peak shaving, frequency regulation, and reserve optimization. The overall system integrates data-driven, real-time calculation, and dynamic verification, significantly improving the accuracy and adaptability of assessing the power regulation capability of pumped storage power stations serving the grid.

[0030] Example 3: See Figure 3 This embodiment further defines the functions of step S2 and the power generation regulation capability calculation module based on the above embodiment, as follows: Based on the changes in reservoir capacity corresponding to the changes in upper reservoir water level data between two adjacent moments in historical operation data, and the power generation obtained by integrating the active power of the generating unit over the interval time, a relationship model between the upper reservoir water level of the pumped storage power station and the power generation per unit water consumption is constructed, and the power generation per unit water consumption is obtained as a function of water level. Based on the function of unit water consumption and power generation with respect to water level, and combined with real-time operating data, the unit water consumption and power generation at each water level is integrated within the water level range corresponding to the available power generation capacity to calculate the real-time adjustable power generation capacity at the current water level.

[0031] Specifically: Obtain real-time operation data of pumped storage power stations, such as the current water level data of the upper reservoir and the current water level data of the lower reservoir.

[0032] Obtain historical operating data of pumped storage power stations, such as the water level of the upper and lower reservoirs, as well as historical operating data of pumped storage units, such as unit operating conditions, power generation, and pumping power.

[0033] Obtain reservoir capacity test data for pumped storage power stations, including the correspondence between the water level and capacity of the upper reservoir, the correspondence between the water level and capacity of the lower reservoir, and the dead water level and normal storage water level data of both the upper and lower reservoirs.

[0034] Step 1: Construct a model relating the water level in the upper reservoir of a pumped storage power station to the electricity generated per unit of water consumption; Based on the reservoir capacity change corresponding to the change in upper reservoir water level data between two adjacent moments in historical operation data, and the power generation obtained by integrating the active power of the generating unit over the interval time, the power generation per unit water consumption at that water level is calculated.

[0035]

[0036] In the formula, for Electricity generated per unit of water consumption at the water level The active power generated by the generator unit. for and Interval of water level changes The upper reservoir water level is based on the reservoir capacity test data. The corresponding upper reservoir capacity, The upper reservoir water level is based on the reservoir capacity test data. The corresponding upper reservoir capacity.

[0037] A least-squares polynomial fitting method was used to construct a model relating the upper reservoir water level of a pumped-storage power station to the power generation per unit water consumption, yielding a function of power generation per unit water consumption with respect to the water level. .

[0038] Step 2: Calculate the real-time available power generation capacity of the power plant;

[0039] In the formula, For real-time available power generation capacity, This represents the reservoir's current water level and corresponding capacity. This refers to the reservoir capacity corresponding to the dead water level of the upper reservoir. This corresponds to the reservoir's normal water level and storage capacity. This represents the reservoir capacity corresponding to the current water level.

[0040] Based on reservoir capacity test data, the upper reservoir water level after the available power generation capacity is fully utilized is calculated, i.e., the reservoir capacity is... Corresponding water level .

[0041] Step 3: Calculate the real-time adjustable power generation capacity; Within the water level range corresponding to the available power generation capacity, the unit water consumption power generation at each water level is integrated to calculate the real-time power generation regulation capacity at the current water level.

[0042]

[0043] In the formula, For real-time regulation of generated electricity, This is the current water level of the upper reservoir. This refers to the water level of the upper reservoir after its power generation capacity has been exhausted. The power generated per unit of water consumed is a function of the water level.

[0044] Step 4: Based on the above method, calculate the power generation regulation capacity of the upper reservoir from the dead water level to the normal storage water level, and construct a relationship model between the upper reservoir water level and the power generation capacity.

[0045] Example 4: See Figure 4 This embodiment further defines the functions of step S3 and the pumping power regulation capacity calculation module based on the above embodiment, as follows: Based on the changes in reservoir capacity corresponding to the changes in reservoir water level data between two adjacent moments in historical operation data, and the pumping power obtained by integrating the pumping active power of the unit over the interval time, calculate the unit water consumption pumping power at that water level. Based on the unit water consumption and pumping power at different water levels, a relationship model between the reservoir water level and the unit water consumption and pumping power of the pumped storage power station is constructed, and the function of the unit water consumption and pumping power with respect to the water level is obtained. Based on the function of unit water consumption pumping power with respect to water level, and combined with real-time operating data, the unit water consumption pumping power is integrated within the water level range corresponding to the available pumping capacity, and the real-time pumping power regulation capacity at the current water level is calculated.

[0046] Specifically: Step 1: Construct a model relating the water level in the lower reservoir of a pumped storage power station to the unit power consumption for pumping. Based on the changes in reservoir capacity corresponding to the changes in reservoir water level at two adjacent moments in historical operating data, and the pumping power obtained by integrating the active power of the pumping unit over the interval time, the unit water consumption and pumping power at that water level are calculated.

[0047]

[0048] In the formula, for The unit water consumption and pumping power at the water level The active power of the unit for pumping water. for and Interval of water level changes The water level of the lower reservoir based on the reservoir capacity test data The corresponding reservoir capacity, The water level of the lower reservoir based on the reservoir capacity test data The corresponding reservoir capacity.

[0049] A least-squares polynomial fitting method was used to construct a model relating the reservoir water level and the unit pumping power consumption of a pumped-storage power station, yielding a function of the unit pumping power consumption with respect to the water level. .

[0050] Step 2: Calculate the real-time available pumping capacity;

[0051] In the formula, To provide real-time available pumping capacity, This represents the reservoir capacity corresponding to the current water level. This refers to the reservoir capacity corresponding to the dead water level. This corresponds to the reservoir's normal water level and storage capacity. This represents the reservoir's current water level and corresponding capacity.

[0052] Based on reservoir capacity test data, the water level of the lower reservoir after the available pumping capacity is used up is calculated, i.e., the reservoir capacity is... Corresponding water level .

[0053] Step 3: Calculate the real-time pumpable power regulation capacity; Within the water level range corresponding to the available pumping capacity, the unit water consumption and pumping power at each water level are integrated to calculate the real-time pumping power regulation capacity at the current water level.

[0054]

[0055] In the formula, To enable real-time adjustment of pumping power, This is the current water level of the lower reservoir. This is the water level in the lower reservoir after the available pumping capacity has been used up. The unit of water consumption and pumping power is a function of water level.

[0056] Step 4: Based on the above method, calculate the pumpable power regulation capacity from the dead water level to the normal storage level of the lower reservoir, and construct a relationship model between the lower reservoir water level and the pumpable power.

[0057] Example 5: See Figure 5 This embodiment further defines the functions of step S4 and the verification module based on the above embodiment, as follows: Obtain historical data on the water levels of the upper and lower reservoirs, and construct a relationship model between the water levels of the upper and lower reservoirs based on this data. Based on the relationship model between the upper and lower reservoir water levels, and combined with the real-time reservoir water level, the real-time generating capacity and pumpable capacity are calculated. Based on the real-time available power generation and pumpable power, combined with the real-time available power generation regulation capacity and real-time available pumpable power regulation capacity of the pumped storage power station and the daily power generation plan of the pumped storage unit, the available power generation and available pumpable power at each time of day are calculated. The daily power generation and pumping capacity of the pumped storage power station are verified at each time point during the day to obtain the daily power regulation capacity.

[0058] Specifically: Step 1: Based on historical data of the water levels of the upper and lower reservoirs, construct a relationship model between the water levels of the upper and lower reservoirs.

[0059] Step 2: Obtain the daily power generation plan of the pumped storage units. Add up the planned power of all units in the pumped storage power station to obtain the daily power generation plan of the pumped storage power station.

[0060] Step 3: Based on the real-time power generation regulation capacity of the pumped storage power station and the relationship model between the upper and lower reservoir water levels, calculate the real-time lower reservoir water level; based on the real-time pumpable power regulation capacity of the pumped storage power station and the real-time lower reservoir water level, calculate the real-time pumpable power.

[0061] Step four, for the nth future time point within the day: If the power generation plan is in the power generation operating condition, the daily power generation plan of the unit is integrated between adjacent time points to obtain the planned power generation, and then the remaining power generation is calculated; based on the remaining power generation, the future upper reservoir water level is estimated, based on the future upper reservoir water level, the future lower reservoir water level is estimated, and based on the future lower reservoir water level, the remaining pumpable water volume is estimated.

[0062]

[0063] In the formula, Let n be the remaining generateable electricity at the nth future time point. This represents the remaining generateable electricity at the (n-1)th future time point (or the real-time generateable electricity if n=1). This is the power plant's daily power generation plan.

[0064] If the power generation plan is for pumping operation, the daily power generation plan of the unit is integrated between adjacent time points to obtain the planned pumping power, and then the remaining pumpable power is calculated; based on the remaining pumpable power, the reservoir water level in the future state is estimated, based on the reservoir water level in the future state, the upper reservoir water level in the future state is estimated, and based on the upper reservoir water level in the future state, the remaining power generation capacity is estimated.

[0065]

[0066] In the formula, Let N be the remaining pumpable electricity at the nth future time point. This represents the remaining pumpable power at the (n-1)th future time point (or the real-time pumpable power if n=1). This is the power plant's daily power generation plan.

[0067] Step 5: Based on the generateable power and pumpable power at N future time points within the day, verify the feasibility of the daily power generation plan. If the plan is feasible, the planned value is the daily power regulation capacity of the pumped storage power station; if the plan is not feasible, the daily power regulation capacity of the pumped storage power station is 0.

[0068]

[0069]

[0070] In the formula, for Real-time power generation and regulation capabilities for The ability to regulate the power supply for pumping water at all times. For Continuous power generation plan.

[0071] This invention fully considers the characteristics of water consumption rate changes with water level in pumped storage power generation and pumping processes. It constructs a relationship model between water level and water consumption rate on both the generation and pumping sides. Borrowing from the water level stratification method, it accurately calculates the power regulation capacity of pumped storage by integrating the power generation per unit of water consumption. The accuracy of power regulation capacity calculation is significantly improved compared to methods based on experimental data and constant water consumption rates. The proposed method for assessing the power regulation capacity of the pumped storage service grid is based on real-time power regulation capacity assessment results and integrates the daily power generation plan. It assesses power regulation capacity through energy constraints of remaining generateable and pumpable power. Compared to methods based on reservoir storage capacity assessment, this avoids the influence of differences in energy conversion efficiency, further improving the accuracy of power regulation capacity assessment.

[0072] Example 6: See Figure 6 The present invention also provides an electronic device 100 for analyzing the power regulation capacity of pumped storage service grids; the electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104.

[0073] The memory 101 can be used to store the computer program 103. The processor 102 implements the steps of the pumped storage service grid power regulation capability analysis method described in Embodiment 1 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101. The memory 101 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device 100 (such as audio data), etc. In addition, the memory 101 may include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0074] The at least one processor 102 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 102 may be a microprocessor or any conventional processor. The processor 102 is the control center of the electronic device 100, connecting various parts of the electronic device 100 via various interfaces and lines.

[0075] The memory 101 in the electronic device 100 stores multiple instructions to implement a method for analyzing the power regulation capability of a pumped storage service grid, and the processor 102 can execute the multiple instructions to achieve the following: Obtain historical operational data of pumped storage power stations and reservoir capacity test data; Based on historical operating data of pumped storage power stations and reservoir capacity test data, calculate the real-time power generation regulation capacity of pumped storage power stations. Based on historical operating data of pumped storage power stations and reservoir capacity test data, calculate the real-time pumpable power regulation capacity of pumped storage power stations. Based on the real-time power generation regulation capacity and real-time pumping capacity regulation capacity of the pumped storage power station, the daily power regulation capacity of the pumped storage power station is obtained.

[0076] Example 7: If the modules / units integrated in the electronic device 100 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0077] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0078] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0079] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1The function specified in one or more boxes.

[0080] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0081] 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 it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A method for analyzing the power regulation capacity of a pumped storage service grid, characterized in that, Includes the following steps: Acquire real-time operation data, historical operation data, and reservoir capacity test data of pumped storage power stations; Based on the real-time operation data, historical operation data and reservoir capacity test data of the pumped storage power station, calculate the real-time power generation regulation capacity of the pumped storage power station; Based on the real-time operation data, historical operation data and reservoir capacity test data of the pumped storage power station, calculate the real-time pumpable water and electricity regulation capacity of the pumped storage power station. Based on the real-time power generation regulation capacity and real-time pumping capacity regulation capacity of the pumped storage power station, the daily power regulation capacity of the pumped storage power station is obtained.

2. The method for analyzing the power regulation capacity of a pumped storage service grid according to claim 1, characterized in that, Historical operating data of pumped storage power stations include upper reservoir water level data, lower reservoir water level data, unit operating condition data, power generation active power data, and pumping active power data; The real-time operating data of the pumped storage power station includes the current water level data of the upper reservoir and the current water level data of the lower reservoir; The reservoir capacity test data includes the correspondence between the water level and capacity of the upper reservoir, the correspondence between the water level and capacity of the lower reservoir, and the dead water level and normal storage water level of both the upper and lower reservoirs.

3. The method for analyzing the power regulation capacity of a pumped storage service grid according to claim 1, characterized in that, Based on real-time operating data, historical operating data, and reservoir capacity test data of the pumped storage power station, the specific method for calculating the real-time power generation regulation capacity of the pumped storage power station is as follows: Based on the changes in reservoir capacity corresponding to the changes in upper reservoir water level data between two adjacent moments in historical operation data, and the power generation obtained by integrating the active power of the generating unit over the interval time, a relationship model between the upper reservoir water level of the pumped storage power station and the power generation per unit water consumption is constructed, and the power generation per unit water consumption is obtained as a function of water level. Based on the function of unit water consumption and power generation with respect to water level, and combined with real-time operating data, the unit water consumption and power generation at each water level is integrated within the water level range corresponding to the available power generation capacity to calculate the real-time adjustable power generation capacity at the current water level.

4. The method for analyzing the power regulation capacity of a pumped storage service grid according to claim 1, characterized in that, Based on real-time operating data, historical operating data, and reservoir capacity test data of the pumped storage power station, the specific method for calculating the real-time pumpable power regulation capacity of the pumped storage power station is as follows: Based on the changes in reservoir capacity corresponding to the changes in reservoir water level data between two adjacent moments in historical operation data, and the pumping power obtained by integrating the pumping active power of the unit over the interval time, calculate the unit water consumption pumping power at that water level. Based on the unit water consumption and pumping power at different water levels, a relationship model between the reservoir water level and the unit water consumption and pumping power of the pumped storage power station is constructed, and the function of the unit water consumption and pumping power with respect to the water level is obtained. Based on the function of unit water consumption pumping power with respect to water level, and combined with real-time operating data, the unit water consumption pumping power is integrated within the water level range corresponding to the available pumping capacity, and the real-time pumping power regulation capacity at the current water level is calculated.

5. The method for analyzing the power regulation capacity of a pumped storage service grid according to claim 1, characterized in that, Based on the real-time power generation regulation capacity and real-time pumping capacity regulation capacity of the pumped storage power station, the specific method for obtaining the intraday power regulation capacity of the pumped storage power station is as follows: Obtain historical data on the water levels of the upper and lower reservoirs, and construct a relationship model between the water levels of the upper and lower reservoirs based on this data. Based on the relationship model between the upper and lower reservoir water levels, and combined with the real-time reservoir water level, the real-time generating capacity and pumpable capacity are calculated. Based on the real-time available power generation and pumpable power, combined with the real-time available power generation regulation capacity and real-time available pumpable power regulation capacity of the pumped storage power station and the daily power generation plan of the pumped storage unit, the available power generation and available pumpable power at each time of day are calculated. The daily power generation and pumping capacity of the pumped storage power station are verified at each time point during the day to obtain the daily power regulation capacity.

6. A power regulation capability analysis system for pumped storage service power grids, characterized in that, include: The data acquisition module is used to acquire real-time operating data, historical operating data, and reservoir capacity test data of the pumped storage power station. The power generation regulation capacity calculation module is used to calculate the real-time power generation regulation capacity of the pumped storage power station based on the real-time operation data, historical operation data and reservoir capacity test data of the pumped storage power station. The pumping power regulation capacity calculation module is used to calculate the real-time pumpable power regulation capacity of the pumped storage power station based on the real-time operation data, historical operation data and reservoir capacity test data of the pumped storage power station. The verification module is used to obtain the daily power regulation capacity of the pumped storage power station based on its real-time power generation regulation capacity and real-time pumping power regulation capacity.

7. The power regulation capability analysis system for pumped storage service grids according to claim 6, characterized in that, The data acquisition module is used to collect current water level data of the upper and lower reservoirs as real-time operating data of the pumped storage power station; it is also used to collect water level data of the upper and lower reservoirs, unit operating condition data, power generation active power data, and pumping active power data as historical operating data of the pumped storage power station; and it is used to collect data on the correspondence between reservoir water level and capacity, the correspondence between water level and capacity of the lower reservoir, and the dead water level and normal storage water level of both the upper and lower reservoirs as reservoir capacity test data.

8. The power regulation capability analysis system for pumped storage service grids according to claim 6, characterized in that, The power generation regulation capability calculation module's functionality is achieved through the following methods: Based on the changes in reservoir capacity corresponding to the changes in upper reservoir water level data between two adjacent moments in historical operation data, and the power generation obtained by integrating the active power of the generating unit over the interval time, a relationship model between the upper reservoir water level of the pumped storage power station and the power generation per unit water consumption is constructed, and the power generation per unit water consumption is obtained as a function of water level. Based on the function of unit water consumption and power generation with respect to water level, and combined with real-time operating data, the unit water consumption and power generation at each water level is integrated within the water level range corresponding to the available power generation capacity to calculate the real-time adjustable power generation capacity at the current water level.

9. A power regulation capability analysis system for pumped storage service grids according to claim 6, characterized in that, The function of the pumping power regulation capacity calculation module is implemented through the following methods: Based on the changes in reservoir capacity corresponding to the changes in reservoir water level data between two adjacent moments in historical operation data, and the pumping power obtained by integrating the pumping active power of the unit over the interval time, calculate the unit water consumption pumping power at that water level. Based on the unit water consumption and pumping power at different water levels, a relationship model between the reservoir water level and the unit water consumption and pumping power of the pumped storage power station is constructed, and the function of the unit water consumption and pumping power with respect to the water level is obtained. Based on the function of unit water consumption pumping power with respect to water level, and combined with real-time operating data, the unit water consumption pumping power is integrated within the water level range corresponding to the available pumping capacity, and the real-time pumping power regulation capacity at the current water level is calculated.

10. A power regulation capability analysis system for pumped storage service grids according to claim 6, characterized in that, The verification module's functionality is implemented using the following methods: Obtain historical data on the water levels of the upper and lower reservoirs, and construct a relationship model between the water levels of the upper and lower reservoirs based on this data. Based on the relationship model between the upper and lower reservoir water levels, and combined with the real-time reservoir water level, the real-time generating capacity and pumpable capacity are calculated. Based on the real-time available power generation and pumpable power, combined with the real-time available power generation regulation capacity and real-time available pumpable power regulation capacity of the pumped storage power station and the daily power generation plan of the pumped storage unit, the available power generation and available pumpable power at each time of day are calculated. The daily power generation and pumping capacity of the pumped storage power station are verified at each time point during the day to obtain the daily power regulation capacity.

11. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method for analyzing the power regulation capability of a pumped storage service grid as described in any one of claims 1 to 5.

12. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method for analyzing the power regulation capability of a pumped storage service grid as described in any one of claims 1 to 5.

Images