A multi-source power supply system energy management method and device, electronic equipment and medium

Abstract

This application relates to an energy management method, device, electronic equipment, and medium for a multi-source power supply system, belonging to the field of new energy technology. The method includes: acquiring the load demand power and energy parameters of several power supply units; determining the number of power supply units to be activated based on the load demand power and the energy parameters; determining constraints based on the number of activations and the energy parameters; and solving for the output power allocation method of the several power supply units with the objective of minimizing the output power of the multi-source power supply system. This application, by considering the constraints and demand relationship between the energy parameters of several power supply units and the load demand power, determines the output power allocation method of several power supply units, thereby achieving high-power AC power supply in a network, effectively improving the economy and maximizing the efficiency of the multi-source power supply system, and ensuring the reliable and safe operation of the multi-source power supply system.

Description

Technical Field

[0001] This application relates to the field of new energy technology, and in particular to an energy management method, device, electronic equipment and medium for a multi-source power supply system. Background Technology

[0002] Renewable and clean energy sources such as solar, wind, and hydrogen energy are important directions for energy development under the "dual carbon" goal. Multi-source power supply systems composed of various new energy sources are widely used in residential power supply, field power supply, and military activities.

[0003] In existing technologies, multi-source power supply systems typically consist of photovoltaic power units, wind power units, fuel cell power units, fuel oil power units, energy storage and energy management power units, etc. They can independently supply power to meet distributed power supply needs, or they can jointly form a grid to supply power to meet high-power load needs.

[0004] However, the energy management strategies adopted by the control systems in existing multi-source power supply systems only consider simple energy distribution relationships, neglecting the efficient utilization of renewable energy and the timely storage of renewable energy, which affects the economy and maximum efficiency of multi-source power supply systems. Summary of the Invention

[0005] In view of this, it is necessary to provide an energy management method, device, electronic equipment and medium for multi-source power supply systems to solve the problem that the existing technology neglects the efficient utilization of renewable energy and the timely storage of renewable energy, which affects the economy and maximum efficiency of multi-source power supply systems.

[0006] To address the aforementioned problems, this application provides an energy management method for a multi-source power supply system. The multi-source power supply system includes several power supply units connected in a network to supply power to external loads. The method includes:

[0007] Obtain the load power requirement and the energy parameters of the plurality of power supply units;

[0008] Based on the load power demand and the energy parameters, determine the number of power supply units to be started.

[0009] Based on the number of startups and the energy parameters, constraints are determined, and the output power allocation method of the several power supply units is obtained by minimizing the output power of the multi-source power supply system.

[0010] In some possible implementations, the formula for determining the number of power supply units to be started is:

[0011]

[0012] In the formula, Indicates the power demand of the load. Indicates the first Optimal output power of each power supply unit Indicates the number of power supply units that are activated. Indicates the first The output power coefficient of the power supply unit, when the first The remaining charge or fuel level of the energy storage battery pack of each power unit. hour ,when hour ,in, This indicates the minimum output limit or minimum fuel level limit of the energy storage battery pack.

[0013] In some possible implementations, the formula for solving the output power distribution method of the plurality of power supply units is as follows:

[0014]

[0015]

[0016] In the formula, Indicates the output power of a multi-source power supply system. express The correction factor for the square. express Correction factor for the first power, This represents the correction factor. Expressing the search function f The minimum value, Indicates the first The output power of each power supply unit Indicates the number of power supply units that are activated. Indicates the first The output power coefficient of the power supply unit, when the first The remaining charge or fuel level of the energy storage battery pack of each power unit. hour ,when hour ,in, This indicates the minimum output limit or minimum fuel level limit of the energy storage battery pack.

[0017] In some possible implementations, the constraint is:

[0018]

[0019]

[0020] In the formula, Indicates the first The output power of each power supply unit Indicates the first Maximum output power of each power supply unit Indicates the first The remaining power of the energy storage battery pack of each power unit. This indicates the minimum output limit value of the energy storage battery pack. This indicates the maximum charging limit for the energy storage battery pack. Indicates the output power of a multi-source power supply system. This indicates the maximum output power of a multi-source power supply system.

[0021] In some possible implementations, the plurality of power supply units include a photovoltaic power supply unit, a wind power supply unit, a fuel cell power supply unit, a fuel oil power supply unit, and an energy storage power supply unit, wherein the photovoltaic power supply unit, the wind power supply unit, the fuel cell power supply unit, and the fuel oil power supply unit are all connected to the energy storage power supply unit through a network.

[0022] Among some possible implementations, The photovoltaic power unit is the first power unit, the wind power unit is the second power unit, the fuel cell power unit is the third power unit, the fuel oil power unit is the fourth power unit, and the energy storage power unit is the fifth power unit.

[0023] In some possible implementations, each power supply unit includes three external power supply modes: independently providing AC power, AC network power supply, and independently providing wireless power transmission.

[0024] This application also provides an energy management device for a multi-source power supply system, comprising:

[0025] The system data acquisition unit is used to acquire the load power demand and the energy parameters of the plurality of power supply units;

[0026] The start-up quantity determination unit is used to determine the start-up quantity of the plurality of power supply units based on the load demand power and the energy parameters;

[0027] The power allocation optimization unit is used to determine the constraints based on the number of startups and the energy parameters, and to solve for the output power allocation method of the several power supply units with the goal of minimizing the output power of the multi-source power supply system.

[0028] This application also provides an electronic device, including a memory and a processor;

[0029] The memory is used to store programs;

[0030] The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps of the multi-source power supply system energy management method described above.

[0031] This application also provides a computer-readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the multi-source power supply system energy management method described above.

[0032] The beneficial effects of this application are: the energy management method for multi-source power supply system provided by this application considers the constraints and demand relationship between the energy parameters of several power supply units and the load demand power, and uses optimization algorithms to find the output power allocation method of several power supply units, thereby realizing high-power AC power supply in a network, effectively improving the economy and maximizing the efficiency of the multi-source power supply system, and ensuring the reliable and safe operation of the multi-source power supply system. Attached Figure Description

[0033] Figure 1 A schematic diagram of an embodiment of the multi-source power supply system provided in this application.

[0034] Figure 2 A schematic flowchart of an embodiment of the energy management method for a multi-source power supply system provided in this application;

[0035] Figure 3 A schematic diagram of an embodiment of the energy management device for a multi-source power supply system provided in this application;

[0036] Figure 4 A schematic diagram of an embodiment of the electronic device provided in this application. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0038] It should be understood that the illustrative drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may be implemented out of order, and steps without logical contextual relationships may be reversed or performed simultaneously. Furthermore, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor systems and / or microcontroller systems.

[0039] The terms "first," "second," etc., used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a technical feature specified with "first" or "second" may explicitly or implicitly include at least one of those features. "And / or" describes the relationship between related objects, indicating that three relationships may exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone.

[0040] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] This application provides an energy management method for a multi-source power supply system, which will be described in detail below.

[0042] Figure 1 The schematic diagram of the multi-source power supply system provided in this application is as follows: Figure 1 As shown, the multi-source power supply system includes several power supply units, including photovoltaic power supply units, wind power supply units, fuel cell power supply units, fuel oil power supply units, and energy storage power supply units. The photovoltaic power supply units, wind power supply units, fuel cell power supply units, and fuel oil power supply units are all connected to the energy storage power supply unit through AC networking to supply power to external loads.

[0043] It is understood that the number and type of power supply units are not limited in this application. The multi-source power supply system exemplified in this embodiment includes a variety of renewable energy sources, and power can be obtained in various ways in the field. In other embodiments, the number or number of power supply units can be increased or decreased according to the actual situation.

[0044] Specifically, such as Figure 1 As shown, the photovoltaic power unit corresponds to solar energy and includes photovoltaic modules, photovoltaic inverters, energy storage battery packs, and wireless power transmission modules; the wind power unit corresponds to wind energy and includes a wind turbine prime mover, generator, energy storage battery pack, AC-DC-AC inverter, and wireless power transmission modules; the fuel cell power unit includes a fuel cell module, DC converter, energy storage battery pack, DC-AC inverter, and wireless power transmission modules; the fuel oil power unit includes a fuel oil prime mover, generator, AC-AC inverter, and wireless power transmission modules; and the energy storage and energy management unit includes an energy storage battery pack, bidirectional DC converter, bidirectional energy storage inverter, and wireless power transmission modules.

[0045] Thus, each power unit in the multi-source power supply system has three external power supply modes: the first is independent wireless power transmission, which is realized by the wireless power transmission module of each power unit, and the power supply is adjustable according to the load demand; the second is distributed independent power supply, which is realized by the AC load port of the inverter of each power unit, and the power supply is adjustable according to the load demand; the third is networked AC high-power power supply, which is realized by the AC network port of the inverter of each power unit, and the power supply is adjusted by energy management methods or local network fixed power output.

[0046] For example Figure 1 The multi-source power supply system shown is a networked AC high-power power supply mode. Figure 2 A schematic flowchart of an embodiment of the energy management method for a multi-source power supply system provided in this application is shown below. Figure 2 As shown, energy management methods for multi-source power supply systems include:

[0047] S201. Obtain the load power requirement and energy parameters of several power supply units;

[0048] S202. Based on the load demand power and energy parameters, determine the number of power supply units to be started.

[0049] S203. Based on the number of startups and energy parameters, determine the constraints and, with the goal of minimizing the output power of the multi-source power supply system, solve for the output power allocation method of several power supply units.

[0050] Compared with existing technologies, the energy management method of the multi-source power supply system in this application considers the constraints and demand relationships between the energy parameters of several power supply units and the load demand power, and uses optimization algorithms to determine the output power allocation method of several power supply units, thereby realizing high-power AC power supply in a network, effectively improving the economy and maximizing the efficiency of the multi-source power supply system, and ensuring the reliable and safe operation of the multi-source power supply system.

[0051] Considering that photovoltaic power units, wind power units, fuel cell power units, and energy storage power units all contain energy storage battery packs, the output power is limited by the energy storage battery pack's capacity. When the remaining capacity is less than the minimum output limit... When the remaining power is greater than the maximum charging limit, the power output will stop; when the remaining power is greater than the maximum charging limit, the power output will stop. The charging of the battery pack will stop; similarly, the remaining fuel level in the fuel power unit will be controlled when it falls below a minimum limit. When power is interrupted, the output of electrical energy is stopped. In some embodiments, the formula for determining the number of power supply units to be activated is as follows:

[0052]

[0053] In the formula, Indicates the power demand of the load. Indicates the first Optimal output power of each power supply unit Indicates the number of power supply units that are activated. Indicates the first The output power coefficient of the power supply unit, when the first The remaining charge or fuel level of the energy storage battery pack of each power unit. hour ,when hour ,in, This indicates the minimum output limit or minimum fuel level limit of the energy storage battery pack.

[0054] Furthermore, it also takes into account when the remaining capacity of the energy storage battery pack exceeds the maximum charging limit. Stop charging the battery pack and impose power constraints, the constraints are as follows:

[0055]

[0056]

[0057]

[0058] In the formula, Indicates the first The output power of each power supply unit Indicates the first Maximum output power of each power supply unit Indicates the first The remaining power of the energy storage battery pack of each power unit. This indicates the minimum output limit value of the energy storage battery pack. This indicates the maximum charging limit for the energy storage battery pack. Indicates the output power of a multi-source power supply system. This indicates the maximum output power of a multi-source power supply system.

[0059] Furthermore, considering that solar and wind energy are real-time renewable energy sources, in some embodiments, the electrical energy from photovoltaic power units and wind power units is preferentially utilized, followed by the electrical energy from fuel cell power units and oil-fired power generation units, and finally the electrical energy from energy storage units. In one specific embodiment, The photovoltaic power unit is the first power unit, the wind power unit is the second power unit, the fuel cell power unit is the third power unit, the fuel oil power unit is the fourth power unit, and the energy storage power unit is the fifth power unit.

[0060] Based on the above constraints and the number of power supply units that can be started, in some embodiments, the formula for calculating the output power distribution method of the power supply units is as follows:

[0061]

[0062] In the formula, Indicates the output power of a multi-source power supply system. express The correction factor for the square. express Correction factor for the first power, This represents the correction factor. Expressing the search function f The minimum value.

[0063] To better implement the energy management method for a multi-source power supply system according to the embodiments of this application, based on the energy management method for a multi-source power supply system, correspondingly, as follows: Figure 3 As shown in the illustration, this application also provides an energy management device 300 for a multi-source power supply system, comprising:

[0064] The system data acquisition unit 301 is used to acquire the load power demand and the energy parameters of several power supply units;

[0065] The start-up quantity determination unit 302 is used to determine the start-up quantity of several power supply units based on the load demand power and energy parameters.

[0066] The power allocation optimization unit 303 is used to determine the constraints based on the number of startups and energy parameters, and to solve for the output power allocation method of several power supply units with the goal of minimizing the output power of the multi-source power supply system.

[0067] The multi-source power supply system energy management device 300 provided in the above embodiments can realize the technical solutions described in the above multi-source power supply system energy management method embodiments. The specific implementation principles of each unit can be found in the corresponding content in the above multi-source power supply system energy management method embodiments, and will not be repeated here.

[0068] like Figure 4 As shown, this application also provides an electronic device 400. The electronic device 400 includes a processor 401 and a memory 402. Figure 4 Only some components of the electronic device 400 are shown, but it should be understood that it is not required to implement all the components shown, and more or fewer components may be implemented instead.

[0069] In some embodiments, memory 402 may include RAM memory, and may also include NVM memory, such as at least one disk memory. Memory 402 may store various instructions for performing various processing functions and implementing the method steps of this application.

[0070] In some embodiments, processor 401 may be a CPU, microprocessor, or other data processing chip for running program code stored in memory 402.

[0071] In some embodiments of this application, the memory 402 stores a multi-source power supply system energy management program. When the processor 401 executes the multi-source power supply system energy management program in the memory 402, the following steps can be implemented:

[0072] Obtain the load power requirement and energy parameters of several power supply units;

[0073] Based on the load demand power and energy parameters, determine the number of power supply units to be started.

[0074] Based on the number of startups and energy parameters, constraints are determined, and the output power allocation method of several power supply units is obtained by minimizing the output power of the multi-source power supply system.

[0075] It should be understood that when the processor 401 executes the multi-source power supply system energy management program in the memory 402, in addition to the functions mentioned above, it can also perform other functions, as can be found in the description of the corresponding method embodiments above.

[0076] Accordingly, this application also provides a computer-readable storage medium for storing computer-readable programs or instructions. When the programs or instructions are executed by a processor, they can implement the steps or functions of the multi-source power supply system energy management method provided in the above-described method embodiments.

[0077] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0078] The above provides a detailed description of an energy management method for a multi-source power supply system provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0079] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. An energy management method for a multi-source power supply system, wherein the multi-source power supply system includes a plurality of power supply units, the plurality of power supply units being interconnected via a network to supply power to external loads, the plurality of power supply units including a photovoltaic power supply unit, a wind power supply unit, a fuel cell power supply unit, a fuel oil power supply unit, and an energy storage power supply unit, wherein the photovoltaic power supply unit, the wind power supply unit, the fuel cell power supply unit, and the fuel oil power supply unit are all connected to the energy storage power supply unit via a network, characterized in that, The method includes: Obtain the load power requirement and the energy parameters of the plurality of power supply units; Based on the load power demand and the energy parameters, the number of power supply units to be started is determined using the following formula: In the formula, Indicates the power demand of the load. Indicates the first Optimal output power of each power supply unit Indicates the number of power supply units that are activated. Indicates the first The output power coefficient of the power supply unit, when the first The remaining charge or fuel level of the energy storage battery pack of each power unit. hour ,when hour ,in, This indicates the minimum output limit or minimum fuel level limit of the energy storage battery pack. Based on the number of startups and the energy parameters, constraints are determined, and the output power allocation method of the several power supply units is obtained by minimizing the output power of the multi-source power supply system. The formula for solving the output power distribution method of the plurality of power supply units is as follows: In the formula, Indicates the output power of a multi-source power supply system. express The correction factor for the square. express Correction factor for the first power, This represents the correction factor. Expressing the search function f The minimum value, Indicates the first The output power of each power supply unit Indicates the number of power supply units that are activated. Indicates the first The output power coefficient of the power supply unit, when the first The remaining charge or fuel level of the energy storage battery pack of each power unit. hour ,when hour ,in, This indicates the minimum output limit or minimum fuel level limit of the energy storage battery pack.

2. The energy management method for a multi-source power supply system according to claim 1, characterized in that, The constraints are as follows: In the formula, Indicates the first The output power of each power supply unit Indicates the first Maximum output power of each power supply unit Indicates the first The remaining power of the energy storage battery pack of each power unit. This indicates the minimum output limit value of the energy storage battery pack. This indicates the maximum charging limit for the energy storage battery pack. Indicates the output power of a multi-source power supply system. This indicates the maximum output power of a multi-source power supply system.

3. The energy management method for a multi-source power supply system according to any one of claims 1-2, characterized in that, The photovoltaic power unit is the first power unit, the wind power unit is the second power unit, the fuel cell power unit is the third power unit, the fuel oil power unit is the fourth power unit, and the energy storage power unit is the fifth power unit.

4. The energy management method for a multi-source power supply system according to claim 1, characterized in that, Each power supply unit includes three external power supply modes: independently providing AC power, AC network power supply, and independently providing wireless power transmission.

5. An energy management device for a multi-source power supply system, used to implement the energy management method for a multi-source power supply system as described in any one of claims 1-4, characterized in that, include: The system data acquisition unit is used to acquire the load power demand and the energy parameters of the plurality of power supply units; The start-up quantity determination unit is used to determine the start-up quantity of the plurality of power supply units based on the load demand power and the energy parameters; The power allocation optimization unit is used to determine the constraints based on the number of startups and the energy parameters, and to solve for the output power allocation method of the several power supply units with the goal of minimizing the output power of the multi-source power supply system.

6. An electronic device, characterized in that, Including memory and processor; The memory is used to store programs; The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps of the energy management method for a multi-source power supply system as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the energy management method for a multi-source power supply system as described in any one of claims 1 to 4.

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