Power control method and system, electronic equipment and light storage air conditioner

Abstract

The invention provides a power control method and system, electronic equipment and a light storage air conditioner. The power control method is applied to a photovoltaic power generation system. The power control method comprises the following steps: acquiring current power utilization information of a load and current power generation information of a photovoltaic power generation system; according to the obtained current power utilization information of the load and the current power generation information of the photovoltaic power generation system, whether the difference value between the current power generation power Ppv1 of the photovoltaic power generation system and the current power utilization power Ppv0 of the load exceeds a preset reverse power limit value Pref is judged; and adaptively adjusting the power generation power of the photovoltaic power generation system according to the judgment result. According to the power control method, the technical problem that in the prior art, when the light storage air conditioner meets the power grid requirements of different regions, the power generation power cannot be automatically adjusted according to the power grid condition is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a power control method, system, electronic equipment and photovoltaic storage air conditioner. Background Art

[0002] As an emerging application trend, photovoltaic air conditioning is gradually becoming an important interface between distributed energy and the power grid with the continuous development of photovoltaic air conditioning technology. Its performance will directly affect the quality of distributed energy power generation, and the quality of power generation determines whether it can be successfully connected to the grid.

[0003] At present, photovoltaic power generation systems often integrate excess electricity into the public power grid during operation, but this method may cause instability and harmonic pollution of the power grid. In addition, the undispatching nature of photovoltaic power also brings challenges to grid connection. Therefore, some countries and regions have very high requirements for grid connection, which to some extent affects the normal grid connection of photovoltaic storage air conditioners. With the widespread popularization of distributed photovoltaic power stations, the power systems in some areas have been unable to withstand the impact they bring, and the problems of aging and insufficient capacity of AC systems have become more prominent, further exacerbating the difficulty of grid connection. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and provide a power control method, system, electronic device and photovoltaic storage air conditioner to solve the technical problem that photovoltaic storage air conditioners in the prior art cannot autonomously adjust the generated power according to the power grid conditions when facing the requirements of power grids in different regions.

[0005] In order to achieve the above technical objectives, according to one aspect of the present invention: a power control method is provided, and the power control method is applied to a photovoltaic power generation system; the power control method includes: obtaining the current power consumption information of the load and the current power generation information of the photovoltaic power generation system; judging whether the difference between the current power generation power Ppv1 of the photovoltaic power generation system and the current power consumption power Ppv0 of the load exceeds a preset reverse power limit Pref based on the obtained current power consumption information of the load and the current power generation information of the photovoltaic power generation system; and adaptively adjusting the power generation power of the photovoltaic power generation system based on the judgment result.

[0006] Furthermore, the load includes: an energy storage device for storing electrical energy; a method for adaptively adjusting the power generation power of the photovoltaic power generation system according to the judgment result, comprising: if Ppv1-Ppv0>Pref, judging the current state of the energy storage device; judging whether to adjust the power generation power of the photovoltaic power generation system according to the current state of the energy storage device.

[0007] Furthermore, the method for adaptively adjusting the power generation of the photovoltaic power generation system according to the judgment result further includes: if Ppv1-Ppv0≤Pref, maintaining the current power generation of the photovoltaic power generation system.

[0008] Furthermore, the method for determining whether to adjust the power generation power of the photovoltaic power generation system according to the current state of the energy storage device includes: if the energy storage device is in a fully charged state, adjusting the power generation power of the photovoltaic power generation system so that the difference between the power generation power Ppv2 of the adjusted photovoltaic power generation system and the current power consumption Ppv0 of the load is less than or equal to a preset reverse power limit Pref; if the energy storage device is not in a fully charged state, charging the energy storage device.

[0009] Furthermore, if the energy storage device is not fully charged, the method for charging the energy storage device includes: the current power generation power Ppv1 of the photovoltaic power generation system meets the current power consumption power Ppv0 of the load, and the energy storage device is charged in a constant power mode.

[0010] Furthermore, the load also includes: multiple air conditioners; the photovoltaic power generation system includes multiple photovoltaic components, and each air conditioner corresponds to at least one photovoltaic component among the multiple photovoltaic components; if the energy storage device is fully charged, the power generation power of the photovoltaic power generation system is adjusted so that the difference between the power generation power Ppv2 of the adjusted photovoltaic power generation system and the current power consumption Ppv0 of the load is less than or equal to the preset reverse power limit value Pref. The method includes: judging the working status of each air conditioner; and adjusting the power generation power of the photovoltaic component corresponding to at least one air conditioner among the multiple air conditioners according to the working status of each air conditioner, so that Ppv2-Ppv0≤Pref.

[0011] Furthermore, the method of adjusting the power generation power of the photovoltaic assembly corresponding to at least one of the multiple air conditioners according to the working status of each air conditioner so that Ppv2-Ppv0≤Pref includes: if the multiple air conditioners are all in the on state or the off state, reducing the power generation power of the photovoltaic assembly corresponding to at least one of the multiple air conditioners so that Ppv2-Ppv0≤Pref; if the multiple air conditioners include at least one air conditioner in the on state and the remaining air conditioners in the off state, reducing the power generation power of the photovoltaic assembly corresponding to the air conditioner in the off state so that Ppv2-Ppv0≤Pref.

[0012] According to another aspect of the present invention: a power control system is provided, which is applicable to the above-mentioned power control method, and the power control system includes: a photovoltaic device for converting solar energy into electrical energy and generating electricity; an electric device, which is connected to the photovoltaic device, and the photovoltaic device is used to provide electrical energy to the electric device; a control device, which is connected to the photovoltaic device, and the control device is used to adjust the power generation power of the photovoltaic device; a reverse power device, which is connected to the control device, and the reverse power device is used to obtain current power consumption information of the electric device, and send the obtained current power consumption information of the electric device to the control device; wherein the control device determines whether the difference between the power generation power of the photovoltaic device and the power consumption of the electric device is less than or equal to a preset reverse power limit value based on the current power consumption information of the electric device and the current power generation information of the photovoltaic device, so as to adjust the power generation power of the photovoltaic device according to the judgment result.

[0013] Furthermore, the electrical device includes: an energy storage component, which is connected to the control device and the photovoltaic device respectively, and the control device is used to obtain the current state of the energy storage component to determine whether to charge the energy storage component based on the obtained current state of the energy storage component.

[0014] Furthermore, the electrical device includes: multiple air conditioners; the photovoltaic device includes multiple photovoltaic modules; each air conditioner corresponds to at least one photovoltaic module among the multiple photovoltaic modules; wherein the control device is respectively connected to each air conditioner, and the control device is used to obtain the working status of each air conditioner; when the control device needs to adjust the power generation power of the photovoltaic device, the control device adjusts the power generation power of the photovoltaic module corresponding to at least one of the multiple air conditioners according to the working status of each air conditioner.

[0015] According to another aspect of the present invention: an electronic device is provided, comprising: a processor, and a memory connected to the processor; the memory is used to store a computer program; the processor is used to call and execute the computer program in the memory to execute the above-mentioned power control method.

[0016] According to another aspect of the present invention: a solar energy storage air conditioner is provided, comprising: a power control system, and the power control system is the power control system mentioned above.

[0017] Beneficial effects:

[0018] The technical solution of the present invention is applied, and the power control method provided by the present invention obtains the current power consumption information of the load (the electric equipment in the user's home) and the current power generation information of the photovoltaic power generation system, and obtains the current power consumption Ppv0 of the load and the current power generation Ppv1 of the photovoltaic power generation system. Then, it is judged whether the difference between the current power generation Ppv1 of the photovoltaic power generation system and the current power consumption Ppv0 of the load exceeds the preset reverse power limit Pref. According to the judgment result, the power generation power of the photovoltaic power generation system is adjusted according to suitability, so that the power generation power of the photovoltaic power generation system is always maintained at less than or equal to the sum of the current power consumption Ppv0 of the load and the preset reverse power limit Pref. It can be seen that by obtaining the current power consumption information of the load (i.e., the electric equipment in the user's home) and the current power generation information of the photovoltaic power generation system, the photovoltaic power generation power is adjusted in real time, so that the power generation power of the photovoltaic power generation system can be less than or equal to the preset reverse power limit Pref after the power generation power of the photovoltaic power generation system meets the load usage, and the remaining power generation power can be less than or equal to the preset reverse power limit Pref, so that the photovoltaic power generation system can operate stably under different power grid environments, thereby improving the flexibility and adaptability of the photovoltaic power generation system. And the photovoltaic power generation system can also autonomously adjust the power generation according to the user's current electricity demand and power generation situation, so as to ensure that the operation of the photovoltaic power generation system complies with the provisions of the power grid. At the same time, by adaptively adjusting the power generation of the photovoltaic power generation system, the maximum utilization of photovoltaic power is ensured, the waste of electricity is reduced, and it is better matched with the generation and power demand of photovoltaic power, thereby improving the consumption rate of photovoltaic power and ensuring that more photovoltaic power is effectively utilized; thus realizing the self-generation and self-use of photovoltaic power during the day, local consumption, reducing the power consumption of the municipal network, and reducing the user's electricity bill expenditure. In addition, according to the current power consumption information of the load and the power generation information of the photovoltaic power generation system, the power generation of the photovoltaic power generation system is adaptively adjusted, which can effectively prevent the photovoltaic power generation system from transmitting power to the power grid beyond the allowable range, ensure the safety and stable operation of the power grid, and ensure that the operation of the photovoltaic power generation system complies with the standards of the power grid, avoiding power grid problems caused by reverse power over-limit. In addition, through the intelligent control algorithm, the system can monitor and adjust the power generation in real time, improve the intelligence and efficiency of power management, and optimize the user's experience. At the same time, under different power demand conditions, it ensures that the supply of photovoltaic power is more stable, avoiding power supply instability caused by insufficient or excessive power. The power control method of the present invention effectively solves the technical problem in the prior art that the photovoltaic energy storage air conditioner cannot autonomously adjust the power generation according to the power grid conditions when facing the requirements of power grids in different regions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram showing a flow chart of a first embodiment of a power control method of the present invention;

[0020] Figure 2 A schematic diagram showing a flow chart of a second embodiment of a power control method of the present invention;

[0021] Figure 3 A structural block diagram of an embodiment of a power control system of the present invention is shown;

[0022] Figure 4 A schematic structural diagram of an embodiment of an electronic device of the present invention is shown. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0024] Embodiment 1

[0025] See also Figure 1 As shown, according to an embodiment of the present invention, the present invention provides a power control method, which is applied to a photovoltaic power generation system; the power control method includes:

[0026] S11. Acquire current power consumption information of the load and current power generation information of the photovoltaic power generation system.

[0027] S12: judging whether the difference between the current power generation power Ppv1 of the photovoltaic power generation system and the current power consumption power Ppv0 of the load exceeds a preset reverse power limit value Pref according to the acquired current power consumption information of the load and the current power generation information of the photovoltaic power generation system.

[0028] S13, adaptively adjusting the power generation of the photovoltaic power generation system according to the judgment result.

[0029] The power control method provided by the present invention obtains the current power consumption information of the load (the electric equipment in the user's home) and the current power generation information of the photovoltaic power generation system, and obtains the current power consumption Ppv0 of the load and the current power generation Ppv1 of the photovoltaic power generation system. Then, it is judged whether the difference between the current power generation Ppv1 of the photovoltaic power generation system and the current power consumption Ppv0 of the load exceeds the preset reverse power limit Pref. According to the judgment result, the power generation power of the photovoltaic power generation system is adjusted according to suitability, so that the power generation power of the photovoltaic power generation system is always maintained at less than or equal to the sum of the current power consumption Ppv0 of the load and the preset reverse power limit Pref. It can be seen that by obtaining the current power consumption information of the load (i.e., the electric equipment in the user's home) and the current power generation information of the photovoltaic power generation system, the photovoltaic power generation power is adjusted in real time, so that the power generation power of the photovoltaic power generation system can be less than or equal to the preset reverse power limit Pref after the power generation power of the photovoltaic power generation system meets the load usage, and the remaining power generation power can be less than or equal to the preset reverse power limit Pref, so that the photovoltaic power generation system can operate stably under different power grid environments, thereby improving the flexibility and adaptability of the photovoltaic power generation system. And the photovoltaic power generation system can also autonomously adjust the power generation according to the user's current electricity demand and power generation situation, so as to ensure that the operation of the photovoltaic power generation system complies with the provisions of the power grid. At the same time, by adaptively adjusting the power generation of the photovoltaic power generation system, the maximum utilization of photovoltaic power is ensured, the waste of electricity is reduced, and it is better matched with the generation and power demand of photovoltaic power, thereby improving the consumption rate of photovoltaic power and ensuring that more photovoltaic power is effectively utilized; thus realizing the self-generation and self-use of photovoltaic power during the day, local consumption, reducing the power consumption of the municipal network, and reducing the user's electricity bill expenditure. In addition, according to the current power consumption information of the load and the power generation information of the photovoltaic power generation system, the power generation of the photovoltaic power generation system is adaptively adjusted, which can effectively prevent the photovoltaic power generation system from transmitting power to the power grid beyond the allowable range, ensure the safety and stable operation of the power grid, and ensure that the operation of the photovoltaic power generation system complies with the standards of the power grid, avoiding power grid problems caused by reverse power over-limit. In addition, through the intelligent control algorithm, the system can monitor and adjust the power generation in real time, improve the intelligence and efficiency of power management, and optimize the user's experience. At the same time, under different power demand conditions, it ensures that the supply of photovoltaic power is more stable, avoiding power supply instability caused by insufficient or excessive power. The power control method of the present invention effectively solves the technical problem in the prior art that the photovoltaic energy storage air conditioner cannot autonomously adjust the power generation according to the power grid conditions when facing the requirements of power grids in different regions.

[0030] The "load" mentioned above refers to the equipment or devices that consume electrical energy in the power system. In a user's home, the load usually includes various electrical equipment, such as lighting fixtures, electrical appliances (such as refrigerators, washing machines, air conditioners, etc.), electronic equipment (such as TVs, computers, etc.) and any other facilities that require electrical energy to operate.

[0031] The "current power consumption information of the load" mentioned above can be understood as the overall power consumption status of the current user, which includes data on power consumption, power consumption, etc. These data reflect the actual demand for electricity by the user in a specific time and provide an important basis for the regulation and management of the power system.

[0032] Among them, the "current power generation information of the photovoltaic power generation system" mentioned above can be understood as the current power generation status and related data of the photovoltaic power generation system, including but not limited to: current power generation power, cumulative power generation, and solar radiation intensity.

[0033] The preset reverse power limit value Pref is the maximum power limit that can be generated to the grid according to the grid requirements of the user's area. When the grid does not allow power generation at all, the value of Pref is 0.

[0034] Optionally, the preset reverse power limit value Pref can be set by the installer when installing the device, or can be set by the user according to the requirements of the local power grid. In addition, if the user needs to enable the reverse power control function during use, it can also be set in advance.

[0035] Specifically, the load includes: an energy storage device for storing electric energy; and a method for adaptively adjusting the power generation of the photovoltaic power generation system according to the judgment result, including:

[0036] If Ppv1-Ppv0>Pref, the current state of the energy storage device is determined.

[0037] According to the current state of the energy storage device, it is determined whether to adjust the power generation of the photovoltaic power generation system.

[0038] By adopting such a control method and introducing energy storage devices, the system can better adapt to the grid requirements of different regions and ensure stable operation under various grid environments. In addition, by storing excess photovoltaic power in energy storage devices, it can not only effectively improve energy storage, but also maximize the utilization of photovoltaic power generation while causing the least impact on the grid. This method shows significant economic and environmental benefits.

[0039] Specifically, the method for adaptively adjusting the power generation of the photovoltaic power generation system according to the judgment result also includes:

[0040] If Ppv1-Ppv0≤Pref, the current power generation power of the photovoltaic power generation system is maintained.

[0041] With this control method, when Ppv1-Ppv0≤Pref, it indicates that the power generation efficiency of the photovoltaic power generation system meets the reverse power control requirements of the power grid, which can effectively avoid power grid problems caused by excessive reverse power, thereby protecting the safe and stable operation of the power grid. By maintaining the current power generation power, the system can maintain balance in the current operating state and avoid fluctuations caused by unnecessary power adjustments. This not only reduces the burden on equipment such as photovoltaic components and inverters in the photovoltaic power generation system, but also extends the service life of these components.

[0042] Specifically, the method for determining whether to adjust the power generation of the photovoltaic power generation system according to the current state of the energy storage device includes:

[0043] If the energy storage device is fully charged, the power generation power of the photovoltaic power generation system is adjusted so that the difference between the adjusted power generation power Ppv2 of the photovoltaic power generation system and the current power consumption power Ppv0 of the load is less than or equal to the preset reverse power limit value Pref.

[0044] If the energy storage device is not fully charged, the energy storage device is charged.

[0045] By adopting such a control method, when the energy storage device is not fully charged, the excess photovoltaic power can be stored in the energy storage device. This not only effectively avoids grid problems caused by excessive reverse power, but also reduces the waste of electric energy and improves the utilization efficiency of electric energy. When the energy storage device is fully charged, the excess photovoltaic power cannot be further consumed by the energy storage device. The system will adjust the power generation power automatically to ensure that the difference between the adjusted power generation power Ppv2 of the photovoltaic power generation system and the current power consumption power Ppv0 of the load is less than or equal to the preset reverse power limit Pref. This can effectively prevent the photovoltaic power generation system from transmitting electric energy exceeding the allowable range to the power grid, ensure the safety and stable operation of the power grid, and ensure that the operation of the photovoltaic power generation system meets the standards of the power grid, avoiding grid problems caused by excessive reverse power. Through this control method, the system can flexibly respond to different power demand and photovoltaic power generation conditions, effectively manage the distribution and utilization of electric energy, and improve the overall performance and reliability of the system. This not only optimizes the efficiency of electric energy utilization, but also protects the safety and stable operation of the power grid and improves the user experience.

[0046] Furthermore, if the energy storage device is not fully charged, the method for charging the energy storage device includes: the current power generation power Ppv1 of the photovoltaic power generation system meets the current power consumption power Ppv0 of the load, and the energy storage device is charged in a constant power mode. By adopting such a control method, the electricity generated by photovoltaic power generation can be more efficiently utilized and waste can be reduced. By charging the energy storage device first, not only the efficiency of power utilization is optimized, but also the safety and stable operation of the power grid is protected, and backup can be provided for subsequent power demand.

[0047] The "constant power mode" mentioned above means that the system charges at a stable charging power allowed by the energy storage device, which can reach the maximum charging power and is not restricted. In this way, the system can effectively deliver electric energy to the energy storage device, ensuring that the charging process is continuous and stable while meeting the load demand, and can fully consume the power generated by the photovoltaic power generation system, so that Ppv1-Ppv0≤Pref.

[0048] Optionally, the energy storage device is an energy storage capacitor or an energy storage battery.

[0049] Optionally, when charging the energy storage device, the remaining power generated by the photovoltaic power generation system after being used for the load is transmitted to the energy storage device, so that the power transmitted to the power grid is less than the preset reverse power limit. Further, when the energy storage device changes from a partially charged state to a fully charged state, it is determined whether the difference between the current power generation power Ppv1 of the photovoltaic power generation system and the current power consumption Ppv0 of the load is less than or equal to the preset reverse power limit Pref. If Ppv1-Ppv0>Pref, the power generation power of the photovoltaic power generation system is adjusted so that the difference between the adjusted power generation power Ppv2 of the photovoltaic power generation system and the current power consumption Ppv0 of the load is less than or equal to the preset reverse power limit Pref.

[0050] Furthermore, when the power generation efficiency of the photovoltaic power generation system does not meet the power consumption of the load, the energy storage device discharges to provide power to the load through the energy storage device, thereby reducing the power consumption of the municipal grid and thus reducing the user's electricity bill expenditure.

[0051] The first embodiment of the method provided by the present invention for adjusting the power generation of the photovoltaic power generation system if the energy storage device is in a fully charged state so that the difference between the power generation power Ppv2 of the photovoltaic power generation system after adjustment and the current power consumption power Ppv0 of the load is less than or equal to the preset reverse power limit value Pref is:

[0052] The load also includes an air conditioner, and the photovoltaic power generation system includes at least one photovoltaic module; if the energy storage device is fully charged, the power generation power of at least one photovoltaic module is directly adjusted to reduce the overall power generation power of the photovoltaic power generation system, thereby making Ppv2-Ppv0≤Pref.

[0053] A second embodiment of the method provided by the present invention for adjusting the power generation of the photovoltaic power generation system if the energy storage device is in a fully charged state so that the difference between the power generation power Ppv2 of the photovoltaic power generation system after adjustment and the current power consumption power Ppv0 of the load is less than or equal to the preset reverse power limit value Pref is:

[0054] The load also includes: a plurality of air conditioners; the photovoltaic power generation system includes a plurality of photovoltaic modules, and each air conditioner corresponds to at least one photovoltaic module among the plurality of photovoltaic modules.

[0055] If the energy storage device is in a fully charged state, the method for adjusting the power generation of the photovoltaic power generation system so that the difference between the adjusted power generation power Ppv2 of the photovoltaic power generation system and the current power consumption power Ppv0 of the load is less than or equal to the preset reverse power limit value Pref includes:

[0056] Determine the working status of each air conditioner.

[0057] According to the working status of each air conditioner, the power generation power of the photovoltaic assembly corresponding to at least one of the multiple air conditioners is adjusted so that Ppv2-Ppv0≤Pref.

[0058] By adopting such a control method, the power generation of the photovoltaic modules can be dynamically adjusted by giving priority to the working status of the air conditioner, thereby ensuring that the available power is effectively distributed while meeting the power supply needs of multiple power-consuming devices (including air conditioners and other devices). Flexible adjustment of the power generation according to the working status of each air conditioner can reduce excess power generation and maximize the use of the electricity generated by photovoltaic power generation, thereby reducing power waste. At the same time, adjustments are made according to the working status of each air conditioner, so that the system provides the necessary protection for the main load, while taking into account the needs of other power-consuming devices to form an effective load management strategy. In addition, dynamic adjustment of the power generation enables the system to respond well to load changes, provide a stable power supply, and help maintain the stable operation of the power grid and the overall power supply system.

[0059] Specifically, the method of adjusting the power generation power of the photovoltaic assembly corresponding to at least one of the plurality of air conditioners according to the working state of each air conditioner so that Ppv2-Ppv0≤Pref includes:

[0060] If multiple air conditioners are all in the on state or not in the off state, the power generation power of the photovoltaic module corresponding to at least one of the multiple air conditioners is reduced so that Ppv2-Ppv0≤Pref; if the multiple air conditioners include at least one air conditioner in the on state and the remaining air conditioners in the off state, the power generation power of the photovoltaic module corresponding to the air conditioner in the off state is reduced so that Ppv2-Ppv0≤Pref. By adopting such a control method, the power generation is flexibly adjusted according to the working state of the air conditioner to ensure that photovoltaic power generation is maximized while avoiding unnecessary waste of electricity. This makes the system's resource utilization more efficient. Giving priority to the air conditioners in the on state among multiple air conditioners helps to reasonably allocate electricity and ensure that critical loads are fully powered while reducing support for inactive loads, thereby improving overall energy efficiency.

[0061] Optionally, the multiple air conditioners include a host and multiple slaves. If the multiple air conditioners are all in the on state or in the off state, the power generation power of the photovoltaic component corresponding to at least one of the multiple slaves is reduced so that Ppv2-Ppv0≤Pref.

[0062] Optionally, the specific control process of the power control method is:

[0063] Step 1: When the photovoltaic power generation system is working, the power generation information of the photovoltaic power generation system and the power consumption information of the load (the power consumption equipment in the user's home) are obtained in real time. The current power consumption Ppv0 of the load and the current power generation Ppv1 of the photovoltaic power generation system are obtained from the current power generation information of the photovoltaic power generation system and the current power consumption information of the load (the power consumption equipment in the user's home).

[0064] Step 2: According to the obtained current power consumption Ppv0 of the load and the current power generation Ppv1 of the photovoltaic power generation system, determine whether the difference between the current power generation Ppv1 of the photovoltaic power generation system and the current power consumption Ppv0 of the load exceeds the preset reverse power limit Pref.

[0065] Step 3: if Ppv1-Ppv0≤Pref, maintain the current power generation power of the photovoltaic power generation system; if Ppv1-Ppv0>Pref, determine the current state of the energy storage device in the load.

[0066] Step 4, if the energy storage device is fully charged, adjust the power generation power of the photovoltaic power generation system (i.e. reduce the power generation power of the photovoltaic components corresponding to the air conditioner) so that the difference between the power generation power Ppv2 of the adjusted photovoltaic power generation system and the current power consumption Ppv0 of the load is less than or equal to the preset reverse power limit Pref.

[0067] Among them, if there is one air conditioner and the photovoltaic power generation system includes at least one photovoltaic module; if it is not necessary, the power generation power of at least one photovoltaic module is directly adjusted to reduce the overall power generation power of the photovoltaic power generation system, so that Ppv1-Ppv0≤Pref.

[0068] Among them, if there are multiple air conditioners; the photovoltaic power generation system includes multiple photovoltaic components, and each air conditioner corresponds to at least one photovoltaic component among the multiple photovoltaic components, the working status of each air conditioner is judged.

[0069] If the multiple air conditioners are all in the on state or in the off state, the power generation power of the photovoltaic assembly corresponding to at least one of the multiple air conditioners is reduced so that Ppv2-Ppv0≤Pref.

[0070] If the multiple air conditioners include at least one air conditioner that is in the turned-on state and the remaining air conditioners that are not in the turned-on state, the photovoltaic power generation power of the photovoltaic components corresponding to the air conditioner in the turned-on state shall be retained first, so as to ensure the optimal efficiency of photovoltaic direct drive utilization and reduce the power generation power of the photovoltaic components corresponding to the air conditioner in the turned-off state, so that Ppv2-Ppv0≤Pref.

[0071] Step 5: If the energy storage device is not fully charged, the photovoltaic power generation system charges the energy storage device in a constant power mode while meeting the current power consumption Ppv0 of the load, so that Ppv1-Ppv0≤Pref.

[0072] Step 6: When the energy storage device switches from a partially charged state to a fully charged state, if Ppv1-Ppv0>Pref, execute step 4.

[0073] Embodiment 2

[0074] Figure 2 FIG. 4 is a flow chart of a power control method according to another exemplary embodiment. Figure 2 As shown, the method includes:

[0075] Step 100: When the solar-storage air-conditioning system is set to a power limiting mode by a user or an installer, a preset reverse power limit value (ie, a grid-feeding power limit value) is set in the solar-storage air-conditioning system.

[0076] Step 101, when the photovoltaic power generation system in the photovoltaic storage air conditioning system is working, the power generation information of the photovoltaic power generation system and the power information of the user's power environment (i.e., the power consumption information of the load) are obtained. According to the current power generation information of the photovoltaic power generation system and the current power information of the user's power environment (i.e., the current power consumption information of the load), it is determined whether the current power generation power of the photovoltaic power generation system exceeds the sum of the current power consumption of the load and the preset reverse power limit.

[0077] Step 102: When the current power generation of the photovoltaic power generation system does not exceed the sum of the power consumption of the load and the preset reverse power limit, the current power generation of the photovoltaic power generation system is maintained (i.e. the photovoltaic power generation system generates power normally). If it exceeds, the current state of the energy storage device in the load needs to be determined.

[0078] Step 103, if the energy storage device is in a fully charged state, the power generation power of the photovoltaic power generation system will be reduced so that the power generation power of the photovoltaic power generation system after the reduction is equal to or less than the sum of the current power consumption of the load and the preset reverse power limit.

[0079] Specifically, the load also includes a plurality of air conditioners, the photovoltaic power generation system includes a plurality of photovoltaic modules, and each air conditioner corresponds to at least one photovoltaic module among the plurality of photovoltaic modules; if the energy storage device is in a fully charged state, the specific steps of reducing the power generation power of the photovoltaic power generation system are:

[0080] If the energy storage device is fully charged, the working status of each air conditioner is judged.

[0081] If multiple air conditioners are all in the on state or in the off state, the power generation power of the photovoltaic component corresponding to at least one of the multiple air conditioners is reduced so that the power generation power of the photovoltaic power generation system after the reduction is equal to or less than the sum of the current power consumption of the load and the preset reverse power limit.

[0082] If multiple air conditioners include at least one air conditioner that is in a turned-on state and the rest are in a turned-off state, the photovoltaic power generation power of the photovoltaic components corresponding to the air conditioner in the turned-on state is preferentially retained, thereby ensuring the optimal efficiency of photovoltaic direct drive utilization, and reducing the power generation power of the photovoltaic components corresponding to the air conditioner in the turned-off state, so that the reduced power generation power of the photovoltaic power generation system is equal to or less than the sum of the current power consumption of the load and the preset reverse power limit.

[0083] Step 104: When the energy storage device is not fully charged, the photovoltaic power generation system will first charge the energy storage device in a constant power mode after the load usage is met. When the energy storage device is fully charged, it will be checked again whether the current power generation power of the photovoltaic power generation system exceeds the sum of the current power consumption of the load and the preset reverse power limit. If it exceeds, execute according to step 103.

[0084] Embodiment 3

[0085] The present invention provides a power control system, such as Figure 3As shown, the power control system is applicable to the power control method of embodiment one or embodiment three, and the power control system includes: a photovoltaic device for converting solar energy into electrical energy and generating electricity; an electric device, the electric device is connected to the photovoltaic device, and the photovoltaic device is used to provide electrical energy to the electric device; a control device, the control device is connected to the photovoltaic device, and the control device is used to adjust the power generation power of the photovoltaic device; a reverse power device, the reverse power device is connected to the control device, and the reverse power device is used to obtain current power consumption information of the electric device, and send the obtained current power consumption information of the electric device to the control device; wherein the control device determines whether the difference between the power generation power of the photovoltaic device and the power consumption power of the electric device is less than or equal to a preset reverse power limit value based on the current power consumption information of the electric device and the current power generation information of the photovoltaic device, so as to adjust the power generation power of the photovoltaic device according to the judgment result. With such a structural setting, by setting up a reverse power device, the power consumption information of the power-consuming device can be collected in real time, and the control device can know the power consumption information of the current power-consuming device in real time and understand the situation of the power-consuming device, so that the control device can dynamically adjust the power generation power of the photovoltaic device according to the current power consumption information of the power-consuming device and the current power generation information of the photovoltaic device, so that the photovoltaic device can reduce the impact on the power grid and reduce the instability of the power grid operation. This helps to improve the safety and reliability of the overall power grid and avoid power overload or insufficient power supply. In addition, the system can automatically adjust the power generation power according to the actual load demand and power grid conditions, thereby optimizing the energy utilization efficiency and improving the absorption rate of the power generation of the photovoltaic storage air conditioner.

[0086] Optionally, the reverse power device collects data in real time and interacts with the control device.

[0087] Specifically, the electrical device includes: an energy storage component, which is connected to the control device and the photovoltaic device respectively. The control device is used to obtain the current state of the energy storage component to determine whether to charge the energy storage component based on the obtained current state of the energy storage component.

[0088] Specifically, the electrical device includes: multiple air conditioners; the photovoltaic device includes multiple photovoltaic modules; each air conditioner corresponds to at least one photovoltaic module among the multiple photovoltaic modules; wherein the control device is respectively connected to each air conditioner, and the control device is used to obtain the working status of each air conditioner; when the control device needs to adjust the power generation power of the photovoltaic device, the control device adjusts the power generation power of the photovoltaic module corresponding to at least one of the multiple air conditioners according to the working status of each air conditioner.

[0089] Optionally, the electrical device also includes other conventional household loads (ie, AC loads) in addition to the air conditioner and the energy storage device.

[0090] Optionally, the multiple air conditioners include a host and multiple slaves, and the control device is arranged in the host.

[0091] Embodiment 4

[0092] The present invention provides an electronic device, comprising: a processor, and a memory connected to the processor; the memory is used to store a computer program; the processor is used to call and execute the computer program in the memory to execute the power control method of the first embodiment.

[0093] Optional, such as Figure 4 As shown, the electronic device 500 includes: at least one processor 501, a memory 502, at least one network interface 504 and other user interfaces 503. The various components in the electronic device 500 are coupled together via a bus system 505. It can be understood that the bus system 505 is used to achieve connection and communication between these components. In addition to the data bus, the bus system 505 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, the bus system 505 is not described in detail. Figure 4 Various buses are labeled as bus system 505 .

[0094] The user interface 503 may include a display, a keyboard, or a pointing device (eg, a mouse, a trackball, a touch pad, or a touch screen).

[0095] It can be understood that the memory 502 in the embodiment of the present invention can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus random access memory (DRRAM). The memory 502 described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0096] In some implementations, the memory 502 stores the following elements, executable units or data structures, or a subset thereof, or an extended set thereof: an operating system 5021 and an application program 5022 .

[0097] The operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., which are used to implement various basic services and process hardware-based tasks. The application 5022 includes various application programs, such as a media player (MediaPlayer), a browser (Browser), etc., which are used to implement various application services. The program for implementing the method of the embodiment of the present invention can be included in the application 5022.

[0098] In the embodiment of the present invention, by calling the program or instruction stored in the memory 502, specifically, the program or instruction stored in the application 5022, the processor 501 is used to execute the steps of a provided method.

[0099] Among them, the processor 501 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the first embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor 501. The above-mentioned processor 501 can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present invention can be directly embodied as a hardware decoding processor to be executed, or the hardware and software units in the decoding processor are combined and executed. The software unit can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and completes the steps of the above method in combination with its hardware.

[0100] It is understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPDevice, DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present application, or a combination thereof.

[0101] For software implementation, the technology described herein can be implemented by a unit that performs the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0102] Embodiment 5

[0103] The present invention provides a photovoltaic storage air conditioner, characterized in that it includes: a power control system, and the power control system is a power control system of implementation three. With such a structural setting, the reverse power device in the power control system can collect data in real time and interact with the control device, so that the goal of reverse power control can always be achieved. At the same time, while meeting the use needs of the air conditioner itself, it can also maximize the power consumption of other loads and reasonably control the power generation output to the power grid, thereby reducing the impact on the power grid and reducing the impact of distributed energy on the power grid.

[0104] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable when appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0105] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0106] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0107] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0108] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A power control method, characterized in that: The power control method is applied to a photovoltaic power generation system; the power control method comprises: Acquiring current power consumption information of the load and current power generation information of the photovoltaic power generation system; According to the acquired current power consumption information of the load and the current power generation information of the photovoltaic power generation system, it is determined whether the difference between the current power generation power Ppv1 of the photovoltaic power generation system and the current power consumption power Ppv0 of the load exceeds a preset reverse power limit value Pref; The power generation power of the photovoltaic power generation system is adaptively adjusted according to the judgment result.

2. The power control method according to claim 1, characterized in that: The load includes: an energy storage device for storing electric energy; the method for adaptively adjusting the power generation of the photovoltaic power generation system according to the judgment result includes: If Ppv1-Ppv0>Pref, determine the current state of the energy storage device; Based on the current state of the energy storage device, it is determined whether to adjust the power generation of the photovoltaic power generation system.

3. The power control method according to claim 2, characterized in that: The method for adaptively adjusting the power generation of the photovoltaic power generation system according to the judgment result also includes: If Ppv1-Ppv0≤Pref, the current power generation power of the photovoltaic power generation system is maintained.

4. The power control method according to claim 2, characterized in that: The method for determining whether to adjust the power generation of the photovoltaic power generation system according to the current state of the energy storage device comprises: If the energy storage device is fully charged, the power generation power of the photovoltaic power generation system is adjusted so that the difference between the adjusted power generation power Ppv2 of the photovoltaic power generation system and the current power consumption power Ppv0 of the load is less than or equal to the preset reverse power limit value Pref; If the energy storage device is not fully charged, the energy storage device is charged.

5. The power control method according to claim 3, characterized in that: The method for charging the energy storage device if the energy storage device is not fully charged comprises: The current power generation power Ppv1 of the photovoltaic power generation system charges the energy storage device in a constant power mode while meeting the current power consumption power Ppv0 of the load.

6. The power control method according to claim 4, characterized in that: The load further includes: a plurality of air conditioners; the photovoltaic power generation system includes a plurality of photovoltaic modules, each of the air conditioners corresponds to at least one photovoltaic module among the plurality of photovoltaic modules; The method of adjusting the power generation power of the photovoltaic power generation system if the energy storage device is in a fully charged state so that the difference between the adjusted power generation power Ppv2 of the photovoltaic power generation system and the current power consumption power Ppv0 of the load is less than or equal to a preset reverse power limit value Pref comprises: Determining the working status of each of the air conditioners; According to the working status of each of the air conditioners, the power generation power of the photovoltaic assembly corresponding to at least one of the plurality of air conditioners is adjusted so that Ppv2-Ppv0≤Pref.

7. The power control method according to claim 6, characterized in that: The method of adjusting the power generation power of the photovoltaic assembly corresponding to at least one of the plurality of air conditioners according to the working status of each of the air conditioners so that Ppv2-Ppv0≤Pref comprises: If the plurality of air conditioners are all in the on state or in the off state, the power generation power of the photovoltaic assembly corresponding to at least one of the plurality of air conditioners is reduced so that Ppv2-Ppv0≤Pref; If the plurality of air conditioners include at least one air conditioner in a turned-on state and the remaining air conditioners in a turned-off state, the power generation power of the photovoltaic components corresponding to the air conditioners in the turned-off state is reduced so that Ppv2-Ppv0≤Pref.

8. A power control system, characterized in that: The power control system is applicable to the power control method according to any one of claims 1 to 7, and the power control system comprises: a photovoltaic device for converting solar energy into electrical energy and generating electricity; An electric device, the electric device is connected to the photovoltaic device, and the photovoltaic device is used to provide electric energy for the electric device; A control device, the control device is connected to the photovoltaic device, and the control device is used to adjust the power generation of the photovoltaic device; A reverse power device, the reverse power device is connected to the control device, and the reverse power device is used to obtain current power consumption information of the power consumption device and send the obtained current power consumption information of the power consumption device to the control device; Among them, the control device determines whether the difference between the power generation power of the photovoltaic device and the power consumption power of the power user is less than or equal to a preset reverse power limit value based on the current power consumption information of the power user and the current power generation information of the photovoltaic device, so as to adjust the power generation power of the photovoltaic device according to the judgment result.

9. The power control system according to claim 8, characterized in that: The power-consuming device includes: an energy storage component, which is connected to the control device and the photovoltaic device respectively. The control device is used to obtain the current state of the energy storage component to determine whether to charge the energy storage component based on the obtained current state of the energy storage component.

10. The power control system according to claim 8, characterized in that: The electrical device comprises: a plurality of air conditioners; the photovoltaic device comprises a plurality of photovoltaic modules; each of the air conditioners corresponds to at least one photovoltaic module among the plurality of photovoltaic modules; Wherein, the control device is connected to each of the air conditioners respectively, and the control device is used to obtain the working status of each of the air conditioners; when the control device needs to adjust the power generation power of the photovoltaic device, the control device adjusts the power generation power of the photovoltaic component corresponding to at least one of the multiple air conditioners according to the working status of each of the air conditioners.

11. An electronic device, characterized in that: include: A processor, and a memory connected to the processor; The memory is used to store computer programs; The processor is configured to call and execute the computer program in the memory to perform the power control method according to any one of claims 1 to 7.

12. A solar energy storage air conditioner, characterized in that: include: A power control system, wherein the power control system is the power control system according to any one of claims 8 to 11.

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