Smart energy management method and system based on energy storage

Abstract

The invention discloses a smart energy management method and system based on energy storage, and the method comprises the steps: adjusting the power supply strategy of an energy storage module and a mains supply to a load module according to the predicted power consumption, the first available power consumption of the energy storage module and the peak-valley power period of the current time, recording the actual working parameters of the load module when the load module is started, and storing the actual working parameters of the load module. Obtaining the predicted required electric quantity of the load module according to the actual working parameters; obtaining the available electricity quantity II of the energy storage module; and adjusting a power supply strategy of the energy storage module and the mains supply to the load module according to the predicted required electric quantity, the peak-valley power period of the current time and the available electric quantity 2 until the load module is shut down, so that the electric energy of the energy storage module can be fully utilized, and the power supply strategy is adjusted according to the actual working condition of the actual load module; the system can meet the working requirements of different load modules, is higher in adaptive adjustment capability, and is wider in application range.

Description

Technical Field

[0001] The present invention relates to an intelligent energy management method and system based on energy storage, belonging to the technical field of energy management. Background Art

[0002] In the practical work of renovating old buildings, there are some problems in energy management as follows: In places like schools and old buildings, insufficient power distribution capacity prevents the installation of multiple air conditioners, or the air conditioners cannot operate simultaneously. Power distribution system renovation is complex and costly, which results in ineffective improvements to students' learning environment. In some solutions, energy storage systems are configured to assist with AC power supply. However, traditional energy storage systems operate relatively independently from the air conditioner and are unable to dynamically adjust charging and discharging according to the air conditioner load. As a result, unreasonable charging and discharging strategies lead to unstable air conditioner operation. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an intelligent energy management method and system based on energy storage, which can dynamically adjust the charging and discharging strategy of the energy storage module according to the load of the air conditioner, thereby providing power supply guarantee for the operation of multiple air conditioners.

[0004] To achieve the above object, the present invention is implemented by adopting the following technical solutions: In a first aspect, the present invention provides a smart energy management method based on energy storage, comprising: According to the preset working parameters of the load module, the predicted power consumption of the load module and the available power of the energy storage module are obtained; When the load module is turned on, the power supply strategy of the energy storage module and the mains to the load module is adjusted according to the predicted power consumption, the available power of the energy storage module and the current peak and off-peak power period; Recording actual operating parameters of the load module, and obtaining predicted required power of the load module based on the actual operating parameters; obtaining available power of the energy storage module; According to the predicted required power, the current peak and valley power periods, and the available power, the power supply strategy of the energy storage module and the mains to the load module is adjusted until the load module is shut down.

[0005] Furthermore, the preset operating parameters include preset on / off time and rated power of the load module.

[0006] Furthermore, after adjusting the power supply strategy of the energy storage module and the mains to the load module according to the predicted required power, the current peak and valley power period, and the available power, the method further includes: If the current time is earlier than the preset shutdown time of the load module and the available power is less than or equal to the preset lower discharge threshold, the energy storage module stops discharging and the mains electricity supplies power to the load module alone; If the operating power of the load module is greater than the power limit of the mains, the load module will shut down.

[0007] Furthermore, when the working power of the load module is greater than the power limit of the mains power and the load is shut down, the method further includes: charging the energy storage module through the mains power.

[0008] Furthermore, after charging the energy storage module through the mains, the method further includes: The available power three of the energy storage module is obtained. When the available power three is greater than a preset re-discharge threshold, the load module is turned on.

[0009] Furthermore, after adjusting the power supply strategy of the energy storage module and the mains to the load module based on the predicted required power, the current peak and valley power period, and the available power, the method further includes: If the current time is not earlier than the preset shutdown time of the load module, the load module shuts down; If the current time is not during the peak power period, the mains will charge the energy storage module; if the current time is during the peak power period, the energy storage module will wait until the peak power period ends, and then the mains will charge the energy storage module; After the energy storage module is fully charged, it will wait until the preset load module startup time.

[0010] Furthermore, the power supply strategy of the energy storage module and the mains to the load module is adjusted according to the predicted power consumption, the available power of the energy storage module and the peak and valley power period at the current time, including: When the predicted power consumption is 0 and the current time is the peak power period, the energy storage module discharges to the mains until the discharge depth of the energy storage module reaches the preset lower discharge threshold; The energy storage module is on standby until the off-peak period, and is charged by the mains electricity until it is fully charged.

[0011] Furthermore, the method of adjusting the power supply strategy of the energy storage module and the mains to the load module based on the predicted power consumption, the available power of the energy storage module, and the peak and valley power period at the current time also includes: When the predicted power consumption is not 0, the available power is greater than or equal to the predicted power consumption, and the current period is peak power period, the energy storage module alone supplies power to the load module; otherwise, the energy storage module and the mains supply jointly supply power to the load module.

[0012] Furthermore, the lower discharge threshold is 10% of the total energy storage of the energy storage module.

[0013] In a second aspect, the present invention provides a smart energy management system based on energy storage, comprising: an energy storage module, which is charged by mains electricity; A load module, which is used to obtain electric energy for maintaining operation from the energy storage module and / or the mains; An energy management unit is used to obtain the predicted power consumption of the load module and the available power of the energy storage module according to the preset working parameters of the load module; when the load module is turned on, the energy management unit adjusts the power supply strategy of the energy storage module and the mains to the load module according to the predicted power consumption, the available power of the energy storage module and the peak and valley power period at the current time; the energy management unit is also used to record the actual working parameters of the load module, and the energy management unit obtains the predicted required power of the load module according to the actual working parameters; obtains the available power of the energy storage module; the energy management unit adjusts the power supply strategy of the energy storage module and the mains to the load module according to the predicted required power, the peak and valley power period at the current time and the available power until the load module is shut down.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an intelligent energy management method and system based on energy storage. The method obtains the predicted power consumption of the load module and the available power of the energy storage module according to the preset working parameters of the load module. When the load module is turned on, the power supply strategy of the energy storage module and the mains power to the load module is adjusted according to the predicted power consumption, the available power of the energy storage module and the peak and valley power period at the current time. Therefore, the power source of the load module can be adjusted accordingly according to the relationship between the available power of the energy storage module and the required power of the load module, which can effectively ensure the stability of power supply.

[0015] The present invention provides an intelligent energy management method and system based on energy storage. The method and system also record the actual working parameters of the load module when the load module is turned on, obtain the predicted power required by the load module according to the actual working parameters; obtain the available power of the energy storage module; and adjust the power supply strategy of the energy storage module and the mains to the load module according to the predicted required power, the peak and valley power period at the current time, and the available power until the load module is turned off. The method and system can fully utilize the electric energy of the energy storage module and adjust the power supply strategy according to the actual working conditions of the actual load module. It can adapt to the working requirements of different load modules, has stronger adaptability and adjustment ability, and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of a smart energy management system based on energy storage provided by an embodiment of the present invention.

[0017] In the figure: 1. Energy storage module; 2. Air conditioner; 21. Air conditioner outdoor unit; 22. Air conditioner indoor unit; 3. PCS converter. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances. Example

[0021] This embodiment provides a smart energy management method based on energy storage, including the following steps: S100: Obtain the predicted power consumption of the load module and the available power of the energy storage module according to the preset operating parameters of the load module. The preset operating parameters include the preset on / off time and rated power of the load module.

[0022] For example, in this embodiment, the load module is an air conditioner with a rated power of 2kW. It is set to start at 9:00 AM and shut down at 5:00 PM, with an operating time of 8 hours. The theoretical power consumption is 16kWh. The energy storage module has a discharge depth of 100%, and the available power is 20kWh.

[0023] S200: When the load module is powered on, the power supply strategy of the energy storage module and the mains to the load module is adjusted according to the predicted power consumption, the available power of the energy storage module and the current peak and valley power period.

[0024] Specifically, when the predicted power consumption is 0 and the current time is the peak power period, the energy storage module discharges to the mains until the discharge depth of the energy storage module reaches a preset lower discharge threshold; The energy storage module is on standby until the off-peak period, and is charged by the mains electricity until it is fully charged.

[0025] When the predicted power consumption is not 0, the available power is greater than or equal to the predicted power consumption, and the current period is peak power period, the energy storage module alone supplies power to the load module; otherwise, the energy storage module and the mains supply jointly supply power to the load module.

[0026] S300, recording the actual operating parameters of the load module, and obtaining the predicted required power of the load module based on the actual operating parameters; obtaining the available power of the energy storage module; S400 , adjusting the power supply strategy of the energy storage module and the mains to the load module according to the predicted required power, the current peak and valley power periods, and the second available power, until the load module is shut down.

[0027] Specifically, when the predicted required power is 0 and the current time is a peak power period, the energy storage module discharges to the mains until the discharge depth of the energy storage module reaches a preset lower discharge threshold; The energy storage module is on standby until the off-peak period, and is charged by the mains electricity until it is fully charged.

[0028] When the predicted required power is not 0, the available power is greater than or equal to the predicted required power, and the current period is peak power, the energy storage module alone supplies power to the load module; otherwise, the energy storage module and the mains supply jointly supply power to the load module.

[0029] S500: If the current time is earlier than the preset shutdown time of the load module and the available power is less than or equal to the preset lower discharge threshold, the energy storage module stops discharging and the mains electricity supplies power to the load module alone. If the working power of the load module is greater than the power limit of the mains, the load module will shut down; The energy storage module is charged through the mains electricity.

[0030] Then, the available power three of the energy storage module is obtained. When the available power three is greater than the preset re-discharge threshold, the load module is turned on, and then step S300 is executed.

[0031] In addition, if the current time is not earlier than the preset shutdown time of the load module, the load module is shut down.

[0032] After the load module is shut down based on the preset shutdown time, if the current time is not during the peak power period, the mains will charge the energy storage module; if the current period is during the peak power period, the energy storage module will standby until the peak power period ends, and then the mains will charge the energy storage module.

[0033] After the energy storage module is fully charged, it will wait until the preset load module startup time.

[0034] It should be noted that, in this embodiment, the lower discharge threshold is 10% of the total energy stored in the energy storage module, and the second discharge threshold is 30% of the total energy stored in the energy storage module.

[0035] It should also be noted that in step S300, in this embodiment, the power demand of the load module during the working period is more accurately predicted by recording the actual working parameters. The actual working parameters include ambient temperature, set temperature, outlet temperature and load power, as shown in the following table for example: month date hour point Ambient temperature (℃) Set temperature (℃) Air outlet temperature (℃) Load power (kW) 7 1 13 0 32 27 27 5 7 1 13 15 32 27 28 1 7 1 13 30 32 27 28 1 7 1 13 45 32 27 29 1 7 1 14 0 32 27 30 1 7 1 14 15 32 27 27 5 7 1 14 30 32 27 28 1 7 1 14 45 32 27 28 1 7 1 15 0 31 27 29 1 7 1 15 15 31 27 30 1 7 1 15 30 31 27 27 5 7 1 15 45 31 27 28 1 7 1 13 0 32 28 28 4 7 1 13 15 32 28 28 1 7 1 13 30 32 28 29 1 7 1 13 45 32 28 29 1 7 1 14 0 32 28 30 1 7 1 14 15 32 28 28 4 7 1 14 30 32 28 28 1 7 1 14 45 32 28 29 1 7 1 15 0 31 28 29 1 7 1 15 15 31 28 30 1 7 1 15 30 31 28 28 4 7 1 15 45 31 28 28 1 Example

[0036] See also Figure 1 This embodiment introduces a smart energy management system based on energy storage, which is used to execute the smart energy management method based on energy storage provided in the above embodiment 1, including: an energy storage module, a load module, and an energy management unit.

[0037] The energy storage module is charged by the mains. The load module is used to obtain electric energy for maintaining operation from the energy storage module and / or the mains, and in this embodiment, the load module is an air conditioner. The energy management unit is used to obtain the predicted power consumption of the load module and the available power of the energy storage module according to the preset working parameters of the load module; when the load module is turned on, the energy storage module and the mains power supply strategy to the load module are adjusted according to the predicted power consumption, the available power of the energy storage module and the peak and valley power period at the current time; the energy management unit is also used to record the actual working parameters of the load module, and obtain the predicted required power of the load module according to the actual working parameters; obtain the available power of the energy storage module; according to the predicted required power, the peak and valley power period at the current time and the available power, the energy storage module and the mains power supply strategy to the load module are adjusted until the load module is shut down.

[0038] Among them, the energy storage module adopts a modular lithium battery pack and is electrically connected to the air-conditioning module through a PCS converter. The air-conditioning module includes an air-conditioning outdoor unit and an air-conditioning indoor unit.

[0039] Example 3. This embodiment provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the steps of the energy storage-based smart energy management method described in any one of Example 1 are implemented.

[0040] Embodiment 4: This embodiment provides a computer device, including: Memory, used to store computer programs / instructions; A processor is used to execute the computer program / instructions to implement the steps of the energy storage-based smart energy management method described in any one of Example 1.

[0041] Example 5. This embodiment provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the steps of the energy storage-based smart energy management method described in any one of Example 1.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

[0043] Those skilled in the art will appreciate that embodiments of the present disclosure may be provided as methods, systems, or computer program products. Thus, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROMs, optical storage, etc.) containing computer-usable program code.

[0044] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts 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, a special-purpose computer, an embedded processor, or other programmable data processing device to produce 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 flowcharts and / or block diagrams. 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.

[0045] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work 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 The function specified in one or more boxes.

[0046] 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 the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not intended to limit its scope of protection. Although the present disclosure has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the present disclosure, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the scope of protection of the disclosed claims to be approved.

Claims

1. A smart energy management method based on energy storage, characterized in that: include: According to the preset working parameters of the load module, the predicted power consumption of the load module and the available power of the energy storage module are obtained; When the load module is turned on, the power supply strategy of the energy storage module and the mains to the load module is adjusted according to the predicted power consumption, the available power of the energy storage module and the current peak and off-peak power period; Recording actual operating parameters of the load module, and obtaining predicted required power of the load module based on the actual operating parameters; obtaining available power of the energy storage module; According to the predicted required power, the current peak and valley power periods, and the available power, the power supply strategy of the energy storage module and the mains to the load module is adjusted until the load module is shut down.

2. The energy storage-based smart energy management method according to claim 1, characterized in that: The preset operating parameters include the preset on / off time and rated power of the load module.

3. The energy storage-based smart energy management method according to claim 2, characterized in that: After adjusting the power supply strategy of the energy storage module and the mains to the load module based on the predicted required power, the current peak and valley power period, and the available power, the method further includes: If the current time is earlier than the preset shutdown time of the load module and the available power is less than or equal to the preset lower discharge threshold, the energy storage module stops discharging and the mains electricity supplies power to the load module alone; If the operating power of the load module is greater than the power limit of the mains, the load module will shut down.

4. The energy storage-based smart energy management method according to claim 3, characterized in that: When the working power of the load module is greater than the power limit of the mains power and the load is shut down, the method further includes: charging the energy storage module through the mains power.

5. The energy storage-based smart energy management method according to claim 4, characterized in that: After charging the energy storage module through the mains, it also includes: The available power three of the energy storage module is obtained. When the available power three is greater than a preset re-discharge threshold, the load module is turned on.

6. The energy storage-based smart energy management method according to claim 2, characterized in that: After adjusting the power supply strategy from the energy storage module and the mains to the load module based on the predicted power requirements, the current peak and off-peak power periods, and the available power, the following steps are also included: If the current time is not earlier than the preset shutdown time of the load module, the load module shuts down; If the current time is not during the peak power period, the mains will charge the energy storage module; if the current time is during the peak power period, the energy storage module will wait until the peak power period ends, and then the mains will charge the energy storage module; After the energy storage module is fully charged, it will wait until the preset load module startup time.

7. The smart energy management method based on energy storage according to claim 1, characterized in that: The power supply strategy of the energy storage module and the mains to the load module is adjusted according to the predicted power consumption, the available power of the energy storage module, and the peak and valley power periods at the current time, including: When the predicted power consumption is 0 and the current time is the peak power period, the energy storage module discharges to the mains until the discharge depth of the energy storage module reaches the preset lower discharge threshold; The energy storage module is on standby until the off-peak period, and is charged by the mains electricity until it is fully charged.

8. The energy storage-based smart energy management method according to claim 7, characterized in that: The method of adjusting the power supply strategy of the energy storage module and the mains to the load module based on the predicted power consumption, the available power of the energy storage module, and the current peak and valley power period may further include: When the predicted power consumption is not 0, the available power is greater than or equal to the predicted power consumption, and the current period is peak power period, the energy storage module alone supplies power to the load module; otherwise, the energy storage module and the mains supply jointly supply power to the load module.

9. The energy storage-based smart energy management method according to claim 3 or 7, characterized in that: The lower discharge threshold is 10% of the total energy storage of the energy storage module.

10. A smart energy management system based on energy storage, characterized in that: include: an energy storage module, which is charged by mains electricity; A load module, which is used to obtain electric energy for maintaining operation from the energy storage module and / or the mains; An energy management unit is used to obtain the predicted power consumption of the load module and the available power of the energy storage module according to the preset working parameters of the load module; when the load module is turned on, the energy management unit adjusts the power supply strategy of the energy storage module and the mains to the load module according to the predicted power consumption, the available power of the energy storage module and the peak and valley power period at the current time; the energy management unit is also used to record the actual working parameters of the load module, and the energy management unit obtains the predicted required power of the load module according to the actual working parameters; obtains the available power of the energy storage module; the energy management unit adjusts the power supply strategy of the energy storage module and the mains to the load module according to the predicted required power, the peak and valley power period at the current time and the available power until the load module is shut down.

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