Operation control method and system of virtual power plant

Abstract

The invention relates to the technical field of virtual power plant control, and discloses a virtual power plant operation control method and system, and the method comprises the steps: collecting power supply side data and power consumption demand; selecting a power supply mode for power supply according to the power consumption demand and the power supply priority of the power supply side; calculating historical average required electricity quantity according to the historical required electricity quantity, and judging whether a power supply mode is adjusted or not; if the single power supply of the power supply side or the combined power supply of the power supply side is adopted, determining whether an energy storage device is added for standby power supply; when it is judged that the energy storage device needs to be added for standby power supply, the standby power supply amount of the energy storage device is determined according to the difference value between the historical average required power amount and the power consumption demand, and when it is judged that the energy storage device does not need to be adopted for power supply, the electric energy storage mode is determined. The system improves the reliability and stability of power supply, reduces the energy cost, promotes the integration and application of renewable energy sources, and has remarkable environmental and economic benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of virtual power plant control, and in particular to an operation control method and system for a virtual power plant. Background Art

[0002] A virtual power plant is a power coordination management system that uses advanced information and communication technologies and software systems to achieve aggregation and coordinated optimization of DERs such as DG, energy storage systems, controllable loads, and electric vehicles, so that it can participate in the electricity market and power grid operation as a special power plant. The core of the concept of a virtual power plant can be summarized as "communication" and "aggregation". The key technologies of virtual power plants mainly include coordinated control technology, smart metering technology, and information and communication technology. The most attractive function of a virtual power plant is that it can aggregate DERs to participate in the operation of the electricity market and ancillary service market, and provide management and ancillary services for distribution and transmission networks.

[0003] Traditional virtual power plant power supply methods often rely on fixed power supply modes and cannot effectively adapt to rapidly changing power demand, resulting in energy waste and unstable power supply. In addition, the lack of a dynamic adjustment mechanism based on historical data has resulted in the failure to fully tap the potential of energy storage devices, thus affecting the efficiency and reliability of overall energy management.

[0004] Therefore, it is necessary to provide an operation control method and system of a virtual power plant to solve the problems of inflexible selection of traditional power supply methods and insufficient utilization of energy storage devices. Summary of the invention

[0005] In view of this, the present invention proposes an operation control method and system of a virtual power plant, aiming to solve the problems of inflexible selection of traditional power supply modes and insufficient utilization of energy storage devices.

[0006] On the one hand, the present invention provides an operation control method of a virtual power plant, comprising:

[0007] Collecting power supply side data and power demand; wherein the power supply side data includes solar power generation, wind power generation and hydropower generation;

[0008] Selecting a power supply mode for power supply according to the power demand and the power supply priority of the power supply side; wherein the power supply mode includes single power supply on the power supply side, combined power supply on the power supply side and power supply by an energy storage device;

[0009] Collect historical power demand, calculate the historical average power demand based on the historical power demand, and determine whether to adjust the power supply mode; if the single power supply on the power supply side or the combined power supply on the power supply side is adopted, determine whether to add an energy storage device for standby power supply according to the size of the historical average power demand;

[0010] When it is determined that an energy storage device needs to be added for backup power supply, the backup power supply of the energy storage device is determined by the difference between the historical average power demand and the power demand. When it is determined that an energy storage device is not needed for power supply, the power storage method is determined based on the historical average power demand.

[0011] Furthermore, the single power supply on the power supply side includes solar power supply, wind power supply and hydropower supply;

[0012] The power supply priorities of the power supply side are solar power supply, wind power supply and hydropower supply;

[0013] The combined power supply on the power supply side includes four combined power supply modes: a combination of solar power supply and wind power supply, a combination of solar power supply and hydropower supply, a combination of wind power supply and hydropower supply, and a combination of solar power supply, wind power supply and hydropower supply.

[0014] Furthermore, when selecting a power supply mode for power supply according to the power demand and the power supply priority of the power supply side, the method includes:

[0015] If the solar power generation is greater than or equal to the power demand, the solar power supply is adopted;

[0016] If the solar power generation is less than the power demand, and the wind power generation is greater than or equal to the power demand, wind power is used for power supply;

[0017] If the solar power generation and wind power generation are both less than the power demand, and the hydropower generation is greater than or equal to the power demand, the hydropower is used for power supply;

[0018] If the solar power generation, wind power generation and hydropower generation are all less than the power demand, a combined power supply on the power supply side or a storage device is used for power supply.

[0019] Furthermore, if the solar power generation, wind power generation and hydropower generation are all less than the power demand, then the power supply side combined power supply or energy storage device power supply is adopted, and it also includes:

[0020] When the sum of solar power generation and wind power generation is greater than or equal to the power demand, a combination of solar power generation and wind power generation is used to store the hydropower generation in the energy storage device;

[0021] When the sum of solar power generation and wind power generation is less than the power demand, and the sum of solar power generation and hydropower generation is greater than or equal to the power demand, a combination of solar power generation and hydropower generation is used to supply power, and the wind power generation is stored in the energy storage device;

[0022] When the sum of solar power generation and wind power generation is less than the electricity demand, and the sum of solar power generation and hydropower generation is less than the electricity demand, and the sum of wind power generation and hydropower generation is greater than or equal to the electricity demand, a combination of wind power generation and hydropower generation is used to store the solar power generation in the energy storage device;

[0023] When the power generation of any two of the combinations of solar power supply, wind power supply and hydropower supply is less than the power demand, and the sum of the three of solar power supply, wind power supply and hydropower supply is greater than or equal to the power demand, the combination of solar power supply, wind power supply and hydropower supply is used for power supply;

[0024] When the sum of solar power supply, wind power supply and hydropower supply is less than the electricity demand, an energy storage device is used to supply power, and the solar power generation, wind power generation and hydropower generation are stored in the energy storage device.

[0025] Furthermore, the collecting of historical power demand, calculating the historical average power demand according to the historical power demand, and determining whether to adjust the power supply mode includes:

[0026] If the historical average power demand is less than or equal to the power demand, it is determined not to adjust the power supply mode;

[0027] If the historical average power demand is greater than the power demand, it is determined whether to adjust the power supply mode based on the historical average power demand and the power generation of the current power supply mode.

[0028] Furthermore, if the historical average power demand is greater than the power demand, determining whether to adjust the power supply mode according to the historical average power demand and the power generation of the current power supply mode includes:

[0029] If the energy storage device is used for power supply, it is determined that the power supply mode is not adjusted;

[0030] If a single power supply or a combined power supply is adopted, and the historical average power demand is less than or equal to the power generation of the current power supply mode, it is determined that the power supply mode is not adjusted;

[0031] If a single power supply or a combined power supply is adopted on the power supply side, and the historical average power demand is greater than the power generation of the current power supply mode, it is determined to add an energy storage device for standby power supply.

[0032] Further, when it is determined that an energy storage device needs to be added for standby power supply, the standby power supply amount of the energy storage device is determined by the difference between the historical average power demand and the power demand, including:

[0033] Setting a maximum difference between the historical average power demand and the power demand, and if the maximum difference is greater than or equal to the difference, using the maximum difference as the reserve power supply;

[0034] If the maximum difference is smaller than the difference, the difference is used as the reserve power supply amount.

[0035] Furthermore, when it is determined that there is no need to use an energy storage device for power supply, determining the energy storage method according to the historical average power demand includes:

[0036] Setting a standard deviation between the power generation of the power supply mode and the historical average power demand;

[0037] If the standard deviation is smaller than the difference between the power generation of the current power supply mode and the historical average demand, the electric energy of the standard deviation is stored in the first standby energy storage device for preparatory power supply, and the electric energy of the value obtained by subtracting the power demand and the standard deviation from the power generation of the current power supply mode is stored in the second standby energy storage device for storage;

[0038] If the standard deviation is greater than or equal to the difference between the power generation of the current power supply mode and the historical average demand, the electric energy of the difference between the power generation of the current power supply mode and the historical average demand is stored in the first standby energy storage device for storage.

[0039] Furthermore, the priority of using the first standby energy storage device and the second standby energy storage device is that the first standby energy storage device is higher than the second standby energy storage device.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] The virtual power plant operation control method of the present invention realizes the intelligent selection of power supply mode by systematically collecting power supply side data and power demand. This method uses historical demand data to calculate the historical average power demand to optimize power supply decisions and ensure the flexibility of power supply modes, including single power supply, combined power supply and energy storage device power supply. When demand fluctuates, the power supply mode is dynamically adjusted, and energy storage devices are introduced when necessary to cope with insufficient power supply. In addition, by calculating the reserve power supply of the energy storage device, the effective use of energy is ensured, energy waste is reduced, and overall energy efficiency is improved. This intelligent regulation not only improves the reliability and stability of power supply, but also reduces energy costs, promotes the integration and application of renewable energy, and has significant environmental and economic benefits.

[0042] On the other hand, the present application also provides an operation control system of a virtual power plant, including:

[0043] A data collection module is configured to collect power supply side data and power demand; wherein the power supply side data includes solar power generation, wind power generation and hydropower generation;

[0044] A power supply judgment module is configured to select a power supply mode for power supply according to the power demand and the power supply priority of the power supply side; wherein the power supply mode includes single power supply on the power supply side, combined power supply on the power supply side and power supply by an energy storage device;

[0045] The power supply adjustment module is configured to collect historical power demand, calculate the historical average power demand according to the historical power demand, and determine whether to adjust the power supply mode; if the single power supply on the power supply side or the combined power supply on the power supply side is adopted, determine whether to add an energy storage device for preliminary power supply according to the size of the historical average power demand;

[0046] The electric energy storage module is configured to determine the reserve power supply of the energy storage device according to the difference between the historical average power demand and the power demand when it is determined that an energy storage device needs to be added for reserve power supply, and to determine the electric energy storage method according to the historical average power demand when it is determined that there is no need to use an energy storage device for power supply.

[0047] It can be understood that the operation control method and system of a virtual power plant provided in the present application have the same beneficial effects and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0049] Figure 1 A flowchart of an operation control method of a virtual power plant provided by an embodiment of the present invention;

[0050] Figure 2 A functional block diagram of an operation control system of a virtual power plant provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0051] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0052] In some embodiments of the present application, see Figure 1 As shown, this embodiment provides an operation control method of a virtual power plant, comprising the following steps:

[0053] S100, collecting power supply side data and power demand; wherein the power supply side data includes solar power generation, wind power generation and hydropower generation;

[0054] S200, selecting a power supply mode for power supply according to the power demand and the power supply priority of the power supply side; wherein the power supply modes include single power supply on the power supply side, combined power supply on the power supply side, and power supply by an energy storage device;

[0055] S300, collect historical power demand, calculate the historical average power demand based on the historical power demand, and determine whether to adjust the power supply mode; if a single power supply or a combined power supply is used, determine whether to add an energy storage device for standby power supply based on the size of the historical average power demand;

[0056] S400: When it is determined that an energy storage device needs to be added for backup power supply, the backup power supply of the energy storage device is determined by the difference between the historical average power demand and the power demand; when it is determined that there is no need to use an energy storage device for power supply, the power storage method is determined according to the historical average power demand.

[0057] It can be understood that the virtual power plant operation control method of the present invention realizes the intelligent selection of power supply mode by systematically collecting power supply side data and power demand. This method uses historical demand data to calculate the historical average power demand to optimize power supply decisions and ensure the flexibility of power supply modes, including single power supply, combined power supply and energy storage device power supply. When demand fluctuates, the power supply mode is dynamically adjusted, and energy storage devices are introduced when necessary to cope with insufficient power supply. In addition, by calculating the reserve power supply of the energy storage device, the effective use of energy is ensured, energy waste is reduced, and the overall energy efficiency is improved. This intelligent regulation not only improves the reliability and stability of power supply, but also reduces energy costs, promotes the integration and application of renewable energy, and has significant environmental and economic benefits.

[0058] In some embodiments of the present application, the single power supply on the power supply side includes solar power supply, wind power supply and hydropower supply;

[0059] The power supply priorities on the power supply side are solar power supply, wind power supply and hydropower supply;

[0060] The combined power supply on the power supply side includes four combined power supply modes: a combination of solar power supply and wind power supply, a combination of solar power supply and hydropower supply, a combination of wind power supply and hydropower supply, and a combination of solar power supply, wind power supply and hydropower supply.

[0061] In some embodiments of the present application, when a power supply mode is selected according to power demand and power supply priority of the power supply side for power supply, it includes:

[0062] If the amount of solar power generated is greater than or equal to the amount of electricity demanded, solar power will be used for power supply;

[0063] If the solar power generation is less than the electricity demand, and the wind power generation is greater than or equal to the electricity demand, wind power will be used for power supply;

[0064] If the solar power generation and wind power generation are both less than the electricity demand, and the hydropower generation is greater than or equal to the electricity demand, hydropower will be used for power supply;

[0065] If the amount of solar power, wind power and hydropower generation are all less than the electricity demand, a combined power supply or energy storage device will be used on the power supply side.

[0066] It is understandable that the efficiency of energy resource utilization is optimized through clear power supply priorities and diverse power supply methods. When the power generation of solar, wind or hydropower meets the power demand, clean energy is given priority to reduce carbon emissions and environmental impact; and in the combination of multiple power supply methods, it can flexibly respond to different power consumption scenarios and ensure the stability and reliability of power supply. Through this flexible power supply strategy, not only the utilization rate of renewable energy is improved, but also effective guarantees are provided for responding to sudden power demand, further promoting the development of sustainable energy.

[0067] In some embodiments of the present application, if the solar power generation, wind power generation and hydropower generation are all less than the power demand, when the power supply side combined power supply or energy storage device power supply is adopted, it also includes:

[0068] When the sum of solar power generation and wind power generation is greater than or equal to the electricity demand, a combination of solar power and wind power generation is used to store the hydropower generation in the energy storage device;

[0069] When the sum of solar power generation and wind power generation is less than the electricity demand, and the sum of solar power generation and hydroelectric power generation is greater than or equal to the electricity demand, a combination of solar power and hydroelectric power generation is used to supply power, and the wind power generation is stored in the energy storage device;

[0070] When the sum of solar power generation and wind power generation is less than the electricity demand, and the sum of solar power generation and hydroelectric power generation is less than the electricity demand, and the sum of wind power generation and hydroelectric power generation is greater than or equal to the electricity demand, a combination of wind power and hydroelectric power generation is used to supply power, and the solar power generation is stored in the energy storage device;

[0071] When the power generation of any two of the combinations of solar power, wind power and hydropower is less than the power demand, and the sum of the three is greater than or equal to the power demand, the combination of solar power, wind power and hydropower is used;

[0072] When the sum of solar power supply, wind power supply and hydropower supply is less than the electricity demand, an energy storage device is used to supply power, and the solar power generation, wind power generation and hydropower generation are stored in the energy storage device.

[0073] It is understandable that through the refined power supply combination, when the clean energy generation is insufficient, the power supply mode can be flexibly adjusted to meet the electricity demand. This approach ensures the coordinated use of renewable energy sources such as solar, wind and hydropower, and optimizes energy storage and distribution. For example, when the power generation of two renewable energy sources meets the demand, the unused energy will be stored in the energy storage device, maximizing the energy utilization efficiency. At the same time, it improves the flexibility and reliability of the power supply system, can effectively respond to fluctuations in electricity demand, reduce dependence on traditional energy, and help promote the sustainable development and application of renewable energy.

[0074] In some embodiments of the present application, collecting historical power demand, calculating historical average power demand based on historical power demand, and determining whether to adjust the power supply mode include:

[0075] If the historical average power demand is less than or equal to the power demand, it is determined that the power supply mode will not be adjusted;

[0076] If the historical average power demand is greater than the power demand, it is determined whether to adjust the power supply mode based on the historical average power demand and the power generation of the current power supply mode.

[0077] In some embodiments of the present application, if the historical average power demand is greater than the power demand, determining whether to adjust the power supply mode based on the historical average power demand and the power generation of the current power supply mode includes:

[0078] If the energy storage device is used for power supply, it is determined that the power supply mode does not need to be adjusted;

[0079] If a single power supply or a combined power supply is used, and the historical average power demand is less than or equal to the power generation of the current power supply mode, it is determined that the power supply mode will not be adjusted;

[0080] If a single power supply or a combined power supply is used on the power supply side, and the historical average power demand is greater than the power generation of the current power supply mode, it is determined to add an energy storage device for backup power supply.

[0081] It is understandable that through the analysis of historical electricity consumption, intelligent optimization and adjustment of the power supply mode is achieved. When the historical average power demand is lower than or equal to the current power demand, the existing power supply mode is maintained to avoid unnecessary adjustments and save resources; when the historical average power demand is higher than the power demand, it is determined whether to add energy storage devices based on the current power generation to ensure the stability and flexibility of the power supply. This dynamic adjustment based on historical data not only improves the efficiency of power supply and reduces energy waste, but also enhances the ability to cope with power fluctuations, laying the foundation for more efficient use of renewable energy.

[0082] In some embodiments of the present application, when it is determined that an energy storage device needs to be added for standby power supply, the standby power supply of the energy storage device is determined by the difference between the historical average power demand and the power demand, including:

[0083] Set the maximum difference between the historical average power demand and the power demand. If the maximum difference is greater than or equal to the difference, the maximum difference will be used as the reserve power supply.

[0084] If the maximum difference is smaller than the difference, the difference is used as the reserve power supply.

[0085] In some embodiments of the present application, when it is determined that there is no need to use an energy storage device for power supply, determining the energy storage method according to the historical average power demand includes:

[0086] Set the standard deviation between the power generation of the power supply mode and the historical average power demand;

[0087] If the standard deviation is smaller than the difference between the power generation of the current power supply mode and the historical average demand, the electric energy of the standard deviation is stored in the first standby energy storage device for preparatory power supply, and the electric energy of the value obtained by subtracting the power demand and the standard deviation from the power generation of the current power supply mode is stored in the second standby energy storage device for storage;

[0088] If the standard deviation is greater than or equal to the difference between the power generation of the current power supply mode and the historical average demand, the electric energy of the difference between the power generation of the current power supply mode and the historical average demand is stored in the first standby energy storage device for storage.

[0089] In some embodiments of the present application, the priority of using the first standby energy storage device and the second standby energy storage device is that the first standby energy storage device is higher than the second standby energy storage device.

[0090] It is understandable that by accurately calculating the reserve power supply and the way of storing electric energy, the use of energy storage devices is optimized, and the overall efficiency and flexibility of the power system are improved. When it is determined that an energy storage device needs to be added for reserve power supply, the reserve power supply is determined by the difference between the historical average power demand and the current power demand, and the energy storage capacity can be flexibly adjusted according to actual needs. If the maximum difference between the historical average power demand and the current demand is greater than or equal to the actual difference, the maximum difference is used as the reserve power supply to ensure that the energy storage device can provide sufficient electricity in the case of peak demand; otherwise, the actual difference is used to effectively prevent the risk of excessive energy storage or insufficient power supply.

[0091] In addition, when it is judged that there is no need to use the energy storage device, the storage method of electric energy is further optimized by setting the standard deviation value between the power generation and the historical average demand. When the standard deviation value is less than the difference between the power generation of the current power supply mode and the historical average demand, the corresponding electric energy is stored according to the standard deviation value to ensure the effective use of energy. Specifically, the first standby energy storage device will give priority to storing the electric energy of the standard deviation value, while the second standby energy storage device will store the value after deducting the power demand and the standard deviation from the current power generation, ensuring that the excess energy can be effectively managed when the power supply is sufficient. Through the design of priority, the first standby energy storage device can respond quickly when the demand surges, ensuring the reliability of power supply, while the second standby energy storage device is used for long-term electric energy storage. Overall, it not only improves the utilization efficiency of energy storage resources, but also enhances the adaptability of the power system to demand fluctuations, helps to achieve the sustainable development of renewable energy, and reduces the dependence on traditional energy, thus having significant economic and environmental benefits.

[0092] On the other hand, see Figure 2 As shown, the present application also provides an operation control system of a virtual power plant, which is used to apply the operation control method of the virtual power plant, including:

[0093] A data collection module is configured to collect power supply side data and power demand; wherein the power supply side data includes solar power generation, wind power generation and hydropower generation;

[0094] A power supply judgment module is configured to select a power supply mode for power supply according to the power demand and the power supply priority of the power supply side; wherein the power supply modes include single power supply on the power supply side, combined power supply on the power supply side, and power supply by an energy storage device;

[0095] The power supply adjustment module is configured to collect historical power demand, calculate the historical average power demand based on the historical power demand, and determine whether to adjust the power supply mode; if a single power supply or a combined power supply is used, determine whether to add an energy storage device for standby power supply based on the size of the historical average power demand;

[0096] The electric energy storage module is configured to determine the reserve power supply of the energy storage device according to the difference between the historical average power demand and the power demand when it is determined that an energy storage device needs to be added for reserve power supply; and to determine the electric energy storage method according to the historical average power demand when it is determined that there is no need to use the energy storage device for power supply.

[0097] It is understandable that the operation control system of the virtual power plant of the present application realizes efficient power management and optimization by integrating multiple modules, and significantly improves the energy utilization efficiency. The data acquisition module monitors the power supply side data and power demand in real time to ensure that the system has a comprehensive understanding of energy production and consumption. The power supply judgment module flexibly selects the power supply mode according to the preset power supply priority, and can quickly adjust under different power demand to ensure the stability and reliability of power supply. The power supply adjustment module analyzes the historical demand data and dynamically calculates the historical average power demand to determine whether it is necessary to adjust the power supply mode or add an energy storage device, further improving the system's responsiveness to demand fluctuations. When the power storage module determines that a reserve power supply is needed, it accurately determines the reserve power supply of the energy storage device by analyzing the difference between the historical average power demand and the power demand, thereby realizing the optimal configuration of energy. When the energy storage device is not required to supply power, the module reasonably arranges the power storage method according to the historical data to ensure that the system can effectively respond to different power demand situations. In summary, the present invention not only improves the utilization rate of renewable energy and reduces the dependence on traditional energy, but also promotes the sustainable development of power supply, laying the foundation for the realization of future smart grids.

[0098] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0099] The present application is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0100] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0101] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for controlling the operation of a virtual power plant, characterized in that: include: Collecting power supply side data and power demand; wherein the power supply side data includes solar power generation, wind power generation and hydropower generation; Selecting a power supply mode for power supply according to the power demand and the power supply priority of the power supply side; wherein the power supply mode includes single power supply on the power supply side, combined power supply on the power supply side and power supply by an energy storage device; Collect historical power demand, calculate the historical average power demand based on the historical power demand, and determine whether to adjust the power supply mode; if the power supply side single power supply or power supply side combined power supply is adopted, determine whether to add an energy storage device for standby power supply according to the size of the historical average power demand; When it is determined that an energy storage device needs to be added for backup power supply, the backup power supply of the energy storage device is determined by the difference between the historical average power demand and the power demand. When it is determined that an energy storage device is not needed for power supply, the power storage method is determined based on the historical average power demand.

2. The operation control method of a virtual power plant according to claim 1, characterized in that: The single power supply on the power supply side includes solar power supply, wind power supply and hydropower supply; The power supply priorities of the power supply side are solar power supply, wind power supply and hydropower supply; The combined power supply on the power supply side includes four combined power supply modes: a combination of solar power supply and wind power supply, a combination of solar power supply and hydropower supply, a combination of wind power supply and hydropower supply, and a combination of solar power supply, wind power supply and hydropower supply.

3. The operation control method of a virtual power plant according to claim 2, characterized in that: The selecting of a power supply mode for power supply according to the power demand and the power supply priority of the power supply side includes: If the solar power generation is greater than or equal to the power demand, the solar power supply is adopted; If the solar power generation is less than the power demand, and the wind power generation is greater than or equal to the power demand, wind power is used for power supply; If the solar power generation and wind power generation are both less than the power demand, and the hydropower generation is greater than or equal to the power demand, the hydropower is used for power supply; If the solar power generation, wind power generation and hydropower generation are all less than the power demand, a combined power supply on the power supply side or a storage device is used for power supply.

4. The operation control method of a virtual power plant according to claim 3, characterized in that: If the solar power generation, wind power generation and hydropower generation are all less than the power demand, then the power supply side combined power supply or energy storage device power supply is adopted, and further includes: When the sum of solar power generation and wind power generation is greater than or equal to the power demand, a combination of solar power generation and wind power generation is used to store the hydropower generation in the energy storage device; When the sum of solar power generation and wind power generation is less than the power demand, and the sum of solar power generation and hydropower generation is greater than or equal to the power demand, a combination of solar power generation and hydropower generation is used to supply power, and the wind power generation is stored in the energy storage device; When the sum of solar power generation and wind power generation is less than the electricity demand, and the sum of solar power generation and hydropower generation is less than the electricity demand, and the sum of wind power generation and hydropower generation is greater than or equal to the electricity demand, a combination of wind power generation and hydropower generation is used to store the solar power generation in the energy storage device; When the power generation of any two of the combinations of solar power supply, wind power supply and hydropower supply is less than the power demand, and the sum of the three of solar power supply, wind power supply and hydropower supply is greater than or equal to the power demand, the combination of solar power supply, wind power supply and hydropower supply is used for power supply; When the sum of solar power supply, wind power supply and hydropower supply is less than the electricity demand, an energy storage device is used to supply power, and the solar power generation, wind power generation and hydropower generation are stored in the energy storage device.

5. The operation control method of a virtual power plant according to claim 4, characterized in that: The collecting of historical power demand, calculating the historical average power demand according to the historical power demand, and determining whether to adjust the power supply mode includes: If the historical average power demand is less than or equal to the power demand, it is determined not to adjust the power supply mode; If the historical average power demand is greater than the power demand, it is determined whether to adjust the power supply mode based on the historical average power demand and the power generation of the current power supply mode.

6. The operation control method of a virtual power plant according to claim 5, characterized in that: If the historical average power demand is greater than the power demand, determining whether to adjust the power supply mode according to the historical average power demand and the power generation of the current power supply mode includes: If the energy storage device is used for power supply, it is determined that the power supply mode is not adjusted; If a single power supply or a combined power supply is adopted, and the historical average power demand is less than or equal to the power generation of the current power supply mode, it is determined that the power supply mode is not adjusted; If a single power supply or a combined power supply is adopted on the power supply side, and the historical average power demand is greater than the power generation of the current power supply mode, it is determined to add an energy storage device for standby power supply.

7. The operation control method of a virtual power plant according to claim 6, characterized in that: When it is determined that an energy storage device needs to be added for standby power supply, the standby power supply amount of the energy storage device is determined by the difference between the historical average power demand and the power demand, including: Setting a maximum difference between the historical average power demand and the power demand, and if the maximum difference is greater than or equal to the difference, using the maximum difference as the reserve power supply; If the maximum difference is smaller than the difference, the difference is used as the reserve power supply amount.

8. The operation control method of a virtual power plant according to claim 7, characterized in that: When it is determined that there is no need to use an energy storage device for power supply, determining the energy storage method based on the historical average power demand includes: Setting a standard deviation between the power generation of the power supply mode and the historical average power demand; If the standard deviation is smaller than the difference between the power generation of the current power supply mode and the historical average demand, the electric energy of the standard deviation is stored in the first standby energy storage device for preparatory power supply, and the electric energy of the value obtained by subtracting the power demand and the standard deviation from the power generation of the current power supply mode is stored in the second standby energy storage device for storage; If the standard deviation is greater than or equal to the difference between the power generation of the current power supply mode and the historical average demand, the electric energy of the difference between the power generation of the current power supply mode and the historical average demand is stored in the first standby energy storage device for storage.

9. The operation control method of a virtual power plant according to claim 8, characterized in that: The priority of using the first standby energy storage device and the second standby energy storage device is that the first standby energy storage device has a higher priority than the second standby energy storage device.

10. An operation control system of a virtual power plant, used for applying the operation control method of a virtual power plant according to any one of claims 1 to 9, characterized in that: include: A data collection module is configured to collect power supply side data and power demand; wherein the power supply side data includes solar power generation, wind power generation and hydropower generation; A power supply judgment module is configured to select a power supply mode for power supply according to the power demand and the power supply priority of the power supply side; wherein the power supply mode includes single power supply on the power supply side, combined power supply on the power supply side and power supply by an energy storage device; The power supply adjustment module is configured to collect historical power demand, calculate the historical average power demand according to the historical power demand, and determine whether to adjust the power supply mode; if the single power supply on the power supply side or the combined power supply on the power supply side is adopted, determine whether to add an energy storage device for preliminary power supply according to the size of the historical average power demand; The electric energy storage module is configured to determine the reserve power supply of the energy storage device according to the difference between the historical average power demand and the power demand when it is determined that an energy storage device needs to be added for reserve power supply, and to determine the electric energy storage method according to the historical average power demand when it is determined that there is no need to use an energy storage device for power supply.

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