Power distribution system and power distribution method

Abstract

A power distribution system (100). The power distribution system (100) comprises a grid-connected bus (10), inverter modules (60), a plurality of power supply modules (20), and energy management modules (40). The grid-connected bus (10) is electrically connected to the power modules (30). The energy management modules (40) are used for obtaining the total output power of the power supply modules (20) and the total power consumption of the power modules (30); and on the basis of the total output power and the total power consumption, adjusting output power of at least part of the power supply modules (20).

Description

Power distribution system and power distribution method

[0001] Priority information

[0002] This application claims priority and benefits of patent application No. 202310979971.4 filed with the State Intellectual Property Office of China on August 3, 2023, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of power distribution, and in particular to a power distribution system and a power distribution method. Background Art

[0004] At present, the distribution system adopts a combination of centralized energy storage and distributed energy storage to meet the system's own power supply needs, in order to prevent the entire distribution system from stopping working when the centralized energy storage fails, and reduce the distribution system's dependence on the power grid. Among them, distributed energy storage can include photovoltaic power generation, wind power generation, diesel power generation and energy storage devices, etc. Among them, photovoltaic power generation and wind power generation are both maximized output, that is, the output power is generally not adjusted; while the output power of diesel power generation and energy storage devices is adjustable. Generally, the distribution system can supply power to the power-consuming device through the power supply module (including centralized energy storage and distributed energy storage). However, when the distribution system is in operation, when the power supply power of the power supply module and the operating conditions or connection number of the power-consuming module change, the distribution system cannot adaptively adjust the power supply module according to the change, thereby affecting the normal operation of the distribution system.

[0005] Summary of the Invention

[0006] Embodiments of the present application provide a power distribution system and a power distribution method.

[0007] The power distribution system of the embodiment of the present application includes a grid-connected bus, an inverter module, a plurality of power supply modules and an energy management module. The grid-connected bus is used to electrically connect the power-consuming modules. The inverter module includes a first-type inverter module and a second-type inverter module, and the first-type inverter module and the second-type inverter module are both electrically connected to the grid-connected bus. The plurality of power supply modules are used to supply power to the power-consuming modules, and the plurality of power supply modules include a first group of power supply modules and a second group of power supply modules. The first group of power supply modules includes at least two power supply modules, and a first-type inverter module is connected between the first group of power supply modules and the grid-connected bus, and at least some of the power supply modules in the second group of power supply modules are directly electrically connected to the grid-connected bus, and / or a second-type inverter module is connected between at least some of the power supply modules in the second group of power supply modules and the grid-connected bus. The energy management module is connected to the grid-connected bus, and is used to obtain the total output power of the first group of power supply modules and the output power of each power supply module in the second group of power supply modules to obtain the total output power of the power supply modules; obtain the power consumption of each of the power-consuming modules to obtain the total power consumption of the power-consuming modules; and adjust the output power of at least part of the power supply modules according to the total output power and the total power consumption.

[0008] In certain embodiments, the plurality of power supply modules include energy storage modules and power generation modules, wherein the power generation modules include adjustable power generation modules. The energy management module is further configured to increase the output power of the energy storage modules and / or the output power of the adjustable power generation modules when the total output power is less than the total power consumption.

[0009] In some embodiments, the grid-connected bus is connected to a commercial power grid. The energy management module is further configured to control the commercial power grid to supply power to the power-consuming module when the total output power is less than the total power consumption.

[0010] In certain embodiments, the plurality of power supply modules include energy storage modules and power generation modules, wherein the power generation modules include adjustable power generation modules. The energy management module is further configured to: when the total output power of the power supply modules is greater than the total power consumption, control the energy storage modules to stop supplying power to the power consumption modules; and when the total output power of the power generation modules is greater than the total power consumption, control the power generation modules to supply power to the energy storage modules and / or the utility grid; or reduce the power generation of the adjustable power generation modules.

[0011] In some embodiments, the energy management module includes a first energy management unit, which is an independent structure and is electrically connected to the grid bus.

[0012] In some embodiments, the energy management module includes a second energy management unit, which is integrated into the first type of inverter module electrically connected to the first group of power supply modules.

[0013] In certain embodiments, the second group of power supply modules includes first-type power supply modules, the first-type power supply modules being configured to generate direct current (DC) power, and the first-type power supply modules including energy storage modules. A first-type inverter module is connected between each first-type power supply module and the grid-connected bus. The first-type inverter module is configured to convert the DC power generated by the first-type power supply module into alternating current (AC) power, and transmit the AC power to the mains power grid and / or the power-consuming modules via the grid-connected bus. The first-type inverter module is further configured to convert the AC power transmitted from the mains power grid via the grid-connected bus into DC power, which is stored in the energy storage module.

[0014] In some embodiments, the second group of power supply modules includes a second type of power supply module; the second type of power supply module is directly electrically connected to the grid bus.

[0015] In some embodiments, the power distribution system also includes a first smart socket, which is electrically connected between the first type inverter module and the grid-connected bus, and is used to detect the output power of the first group of power supply modules or the output power of the corresponding first type power supply module; or, the first smart socket is electrically connected between the second type power supply module and the grid-connected bus, and is used to detect the output power of the corresponding second type power supply module; the energy management module is also used to obtain each output power detected by the first smart socket.

[0016] In some embodiments, the power distribution system also includes a second smart socket, which is electrically connected between the commercial power grid and the power-consuming module. The second smart socket is used to detect the power consumption of the power-consuming module, and the energy management module is also used to obtain the power consumption of each power-consuming module detected by the second smart socket.

[0017] In some embodiments, the energy management module is provided with a first communication unit, and the power supply module is provided with a second communication unit. The energy management module obtains the output power of each power supply module through communication between the first communication unit and the second communication unit.

[0018] In some embodiments, the energy management module is provided with a first communication unit, and the power module is provided with a third communication unit. The energy management module obtains the power consumption of each power module through communication between the first communication unit and the third communication unit.

[0019] In certain embodiments, when the energy management module includes a first energy management unit and a second energy management unit, the first energy management unit is used to obtain the total output power of the first group of power supply modules and the output power of each of the power supply modules in the second group of power supply modules to obtain the total output power of the power supply modules; obtain the power consumption of each of the power-consuming modules to obtain the total power consumption of the power-consuming modules; and adjust the output power of at least part of the power supply modules based on the total output power and the total power consumption; in the event of an abnormality in the first energy management unit, the second energy management unit takes over the first energy management unit.

[0020] The power distribution method of the embodiment of the present application is applied to a power distribution system, which includes a grid-connected bus, an inverter module, multiple power supply modules and an energy management module; the grid-connected bus is used to electrically connect the power-consuming modules; the inverter module includes a first-type inverter module and a second-type inverter module, and the first-type inverter module and the second-type inverter module are both electrically connected to the grid-connected bus; multiple power supply modules are used to supply power to the power-consuming modules, and the multiple power supply modules include a first group of power supply modules and a second group of power supply modules, and the first group of power supply modules includes at least two power supply modules, and a first-type inverter module is connected between the first group of power supply modules and the grid-connected bus, and each of the power supply modules in the second group of power supply modules is directly electrically connected to the grid-connected bus, and / or a second-type inverter module is connected between each of the power supply modules in the second group of power supply modules and the grid-connected bus. The power distribution method includes: obtaining the total output power of the first group of power supply modules and the output power of each power supply module in the second group of power supply modules to obtain the total output power of the power supply modules; obtaining the power consumption of each of the power-consuming modules to obtain the total power consumption of the power-consuming modules; and adjusting the output power of at least part of the power supply modules according to the total output power and the total power consumption.

[0021] In certain embodiments, the plurality of power supply modules include energy storage modules and power generation modules, and the power generation modules include adjustable power generation modules. Adjusting the output power of at least some of the power supply modules based on the total output power and the total power consumption includes increasing the output power of the energy storage modules and / or increasing the output power of the adjustable power generation modules when the total output power is less than the total power consumption.

[0022] In certain embodiments, the power distribution method further includes: controlling the commercial power grid to supply power to the power-consuming module when the total output power is less than the total power consumption.

[0023] In certain embodiments, the plurality of power supply modules include energy storage modules and power generation modules, and the power generation modules include adjustable power generation modules. The power distribution method further includes: controlling the energy storage modules to stop supplying power to the power-consuming modules when the total output power of the power supply modules is greater than the total power consumption; and controlling the power generation modules to supply power to the energy storage modules and / or the utility grid when the total output power of the power generation modules is greater than the total power consumption; or reducing the power generation of the adjustable power generation modules.

[0024] In the power distribution system and power distribution method of the embodiments of the present application, the total output power of the first group of power supply modules and the output power of each power supply module in the second group of power supply modules are obtained to obtain the total output power of the power supply modules, and the power consumption of each power-consuming module is obtained to obtain the total power consumption of the power-consuming modules, and the output power of at least part of the power supply modules is adjusted according to the total output power and the total power consumption, so that the total output power of the power supply modules can be adaptively adjusted according to the changes in the power-consuming modules, thereby ensuring the normal operation of the power distribution system.

[0025] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] FIG1 is a schematic structural diagram of a power distribution system according to some embodiments of the present application;

[0028] FIG2 is a schematic structural diagram of a power distribution system according to some other embodiments of the present application;

[0029] FIG3 is a schematic structural diagram of a power distribution system according to some further embodiments of the present application;

[0030] FIG4 is a schematic structural diagram of a power distribution system according to some other embodiments of the present application;

[0031] FIG5 is a schematic structural diagram of a power distribution system according to some other embodiments of the present application;

[0032] FIG6 is a schematic flow chart of a power distribution method according to certain embodiments of the present application;

[0033] FIG7 is a schematic flow chart of a power distribution method according to certain embodiments of the present application;

[0034] FIG8 is a schematic flow chart of a power distribution method according to certain embodiments of the present application;

[0035] FIG9 is a flow chart of a power distribution method according to certain embodiments of the present application. DETAILED DESCRIPTION

[0036] The following further describes the embodiments of the present application in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. Furthermore, the embodiments of the present application described below in conjunction with the accompanying drawings are exemplary and are intended only to explain the embodiments of the present application and are not to be construed as limiting the present application.

[0037] Referring to FIG. 1 , a power distribution system 100 according to an embodiment of the present application includes a grid-connected bus 10, an inverter module 60, multiple power supply modules 20, and an energy management module 40. The grid-connected bus 10 is electrically connected to the power-consuming modules 30. The inverter module 60 includes a first-type inverter module 61 and a second-type inverter module 63, both of which are electrically connected to the grid-connected bus 10. Multiple power supply modules 20 are configured to supply power to the power-consuming modules 30. The multiple power supply modules 20 include a first group of power supply modules 21 and a second group of power supply modules 23. The first group of power supply modules 21 includes at least two power supply modules 20. A first-type inverter module 61 is connected between the first group of power supply modules 21 and the grid-connected bus 10. At least some of the power supply modules 20 in the second group of power supply modules 23 are directly electrically connected to the grid-connected bus 10, and / or a second-type inverter module 63 is connected between at least some of the power supply modules 20 in the second group of power supply modules 23 and the grid-connected bus 10. The energy management module 40 is connected to the grid bus 10 and is configured to obtain the total output power of the first group of power supply modules 21 and the output power of each power supply module 20 in the second group of power supply modules 23 to obtain the total output power of the power supply modules 20; obtain the power consumption of each power consumption module 30 to obtain the total power consumption of the power consumption modules 30; and adjust the output power of at least some power supply modules 20 based on the total output power and the total power consumption. It should be noted that the power distribution system 100 of the present embodiment can be a household power distribution system, a school power distribution system, a factory power distribution system, etc., without limitation herein.

[0038] In the power distribution system 100 of the embodiment of the present application, the total output power of the first group of power supply modules 21 and the output power of each power supply module 20 in the second group of power supply modules 23 are obtained to obtain the total output power of the power supply modules 20, and the power consumption of each power module 30 is obtained to obtain the total power consumption of the power modules 30, and the output power of at least part of the power supply modules 20 is adjusted according to the total output power and the total power consumption, so that the total output power of the power supply modules 20 can be adaptively adjusted according to the changes in the power modules 30, thereby ensuring the normal operation of the power distribution system 100.

[0039] Referring to Figure 1 , in certain embodiments, a grid bus 10 is a circuit structure for transmitting electrical energy. The grid bus 10 can be made of a metallic conductive material. In the present application, the grid bus 10 may include an AC transmission line, meaning that the grid bus 10 can be used to transmit AC power. Specifically, the grid bus 10 is electrically connected to multiple power supply modules 20 and power consumption modules 30 . Thus, the grid bus 10 can transmit the electrical energy generated by the power supply modules 20 to the power consumption modules 30 to ensure the normal operation of the power consumption modules 30.

[0040] The first type of inverter module 61 can be a hybrid inverter (Hybrid Inverter), which can also be called a multi-mode inverter. A hybrid inverter is a device that combines the functions of a grid-connected inverter and an off-grid inverter. The second type of inverter module 63 can be an inverter. An inverter is a converter that can convert DC power into constant frequency and constant voltage or frequency-modulated and voltage-regulated AC power (generally 220V, 50Hz sine wave). In the present application, the inverter can convert the direct current (DC) generated by the second group of power supply modules 23 electrically connected to the inverter into alternating current (AC), and output the AC power to the power consumption module 20 and / or the mains power grid 30. In the present application, the inverter module 60 (including the first type of inverter module 61 and the second type of inverter module 63) can convert the direct current (DC) generated by the first group of power supply modules 21 and the second group of power supply modules 23 into alternating current (AC), and transmit the AC power to the mains power grid 50 and / or the power consumption module 30. Therefore, on the one hand, when the output power of the power supply module 20 can meet the power consumption of the power module 30, the power supply module 20 can transmit the excess electric energy to the mains power grid 50 to sell it to the power company, thereby obtaining profits; on the other hand, when the output power of the power supply module 20 cannot meet the power consumption of the power module 30, the power module 30 can obtain electric energy from the mains power grid 50 to meet the power consumption of the power module 30, thereby ensuring the normal operation of the power module 30.

[0041] In addition, the inverter module 60 (including the first type inverter module 61 and the second type inverter module 63) is also used to convert the AC power transmitted from the mains power grid 50 via the grid-connected bus 10 into DC power and store it in the energy storage module 25. For example, if the electricity price of the mains power grid 50 is relatively low and the power generated by the power generation module 27 is less than or equal to the power consumption required by the power consumption module 30, the mains power grid 50 can transmit the power via the grid-connected bus 10 to the inverter module 60, and the inverter module 60 can convert the transmitted AC power into DC power and store it in the energy storage module 25 for backup.

[0042] The multiple power supply modules 20 may include energy storage modules 25 and power generation modules 27. The total output power of the power supply modules 20 is the sum of the total output power of the energy storage modules 25 and the total output power of the power generation modules 27. Specifically, the energy storage modules 25 and the power generation modules 27 are each electrically connected to the grid bus 10, enabling the energy storage modules 25 and the power generation modules 27 to transmit electrical energy to the power consumption modules 30 via the grid bus 10. In addition, the power generation module 27 can also transmit electrical energy to the energy storage module 25 via the grid bus 10, enabling the power generation module 27 to meet the power demand of the power consumption modules 30 while also transmitting excess electrical energy to the energy storage module 25 for storage. It should be noted that the power supply modules 20 in the first group of power supply modules 21 may consist solely of the energy storage modules 25, solely of the power generation modules 27, or may include both the energy storage modules 25 and the power generation modules 27. Similarly, the power supply modules 20 in the second group of power supply modules 23 may consist solely of the energy storage modules 25, solely of the power generation modules 27, or may include both the energy storage modules 25 and the power generation modules 27.

[0043] Specifically, the energy storage module 25 can be an energy storage power source. In this case, the total output power of the energy storage module 25 is the output power of the energy storage power source. The energy storage power source may include a lead-acid battery, a nickel-metal hydride battery, or a lithium-ion battery, etc., without limitation. The power generation module 27 may include a photovoltaic power generation device, a wind power generation device, or a diesel generator, etc., without limitation. When the power generation module 27 includes a photovoltaic power generation device, a wind power generation device, and a diesel generator, the total output power of the power generation module 27 is the sum of the power generated by the photovoltaic power generation device, the power generated by the wind power generation device, and the power generated by the diesel generator. A photovoltaic power generation device refers to a power generation device that directly converts solar radiation energy into electrical energy using the photovoltaic effect of photovoltaic cells; a wind power generation device refers to a power generation device that generates electrical energy using wind energy; and a diesel generator refers to a power machine that uses diesel fuel or the like as fuel and a diesel engine as a prime mover to drive a generator to generate electricity. The generator can convert other forms of energy into electrical energy.

[0044] Referring to FIG. 1 , in certain embodiments, the plurality of power supply modules 20 include a first group of power supply modules 21 and a second group of power supply modules 23, where the first group of power supply modules 21 includes at least two power supply modules 20. When the plurality of power supply modules 20 include the first group of power supply modules 21 and the second group of power supply modules 23, the total output power of the power supply modules 20 is the sum of the total output power of the first group of power supply modules 21 and the output power of each power supply module 20 in the second group of power supply modules 23.

[0045] Specifically, in certain embodiments, the first group of power supply modules 21 may include two energy storage modules 25; or the first group of power supply modules 21 may include two power generation modules 27; or the first group of power supply modules 21 may include at least one energy storage module 25 and at least one power generation module 27. The first group of power supply modules 21 are all electrically connected to the same first-class inverter module 61, thereby transmitting the electrical energy generated by at least two power supply modules 20 in the first group of power supply modules 21 to the grid-connected bus 10 via the first-class inverter module 61. For example, referring to FIG. 1 , the first group of power supply modules 21 may include an energy storage power source 25 and a photovoltaic power generation device 27, and both the energy storage power source 25 and the photovoltaic power generation device 27 are electrically connected to the same first-class inverter module 61. Thus, the electrical energy generated by the energy storage power source 25 and the photovoltaic power generation device 27 is converted from DC to AC via the first-class inverter module 61 and then transmitted to the grid-connected bus 10.

[0046] The second group of power supply modules 23 may include multiple power supply modules 20 (including energy storage modules 25 and power generation modules 27). In the case where the current generated by each power supply module 20 in the second group of power supply modules 23 is AC, each power supply module 20 in the second group of power supply modules 23 is directly electrically connected to the grid bus 10; in the case where the current generated by each power supply module 20 in the second group of power supply modules 23 is DC, a second-type inverter module 63 is connected between each power supply module 20 in the second group of power supply modules 23 and the grid bus 10. That is, the DC power generated by each power supply module 20 in the second group of power supply modules 23 is converted into AC power by the second-type inverter module 63 and then transmitted to the grid bus 10.

[0047] It should be noted that, in some embodiments, when the second group of power supply modules 23 includes an energy storage power supply, a photovoltaic power generation device, a wind power generation device and a diesel generator, the multiple power supply modules 20 in the second group of power supply modules 23 are respectively electrically connected to the grid bus 10, that is, the energy storage power supply, the photovoltaic power generation device, the wind power generation device and the diesel generator are each individually connected to the grid bus 10, and respectively transmit the electric energy generated by each of them to the power consumption module 30 through the grid bus 10; when the first group of power supply modules 21 includes at least two of the energy storage power supply, the photovoltaic power generation device, the wind power generation device and the diesel generator, the electric energy generated by at least two of the energy storage power supply, the photovoltaic power generation device, the wind power generation device and the diesel generator is aggregated and then supplied to the power consumption module 30 through the grid bus 10. For example, the energy storage power supply and the photovoltaic power generation device are both electrically connected to the same device (for example, the first type inverter module 61), and then the electric energy generated by the energy storage power supply and the photovoltaic power generation device is transmitted to the power consumption module 30 through the grid bus 10 after DC-to-AC conversion by the first type inverter module 61.

[0048] In certain embodiments, the second group of power supply modules 23 includes a first type power supply module and a second type power supply module. The first type power supply module generates direct current (DC) power and is electrically connected to the grid bus 10 via the second type inverter module 63. The energy storage power supply 25, photovoltaic power generation device 27, and wind power generation device 27 all belong to the first type power supply module. The second type power supply module generates alternating current (AC) power and is directly electrically connected to the grid bus 10. The diesel generator 27 belongs to the second type power supply module.

[0049] Specifically, in some embodiments, the current directly generated by the first-type power supply module is direct current. Therefore, the direct current generated by the first-type power supply module needs to be converted into alternating current for transmission to the mains power grid 50 and / or the power consumption module 30. The current directly generated by the second-type power supply module is alternating current. Therefore, the second-type power supply module is directly electrically connected to the grid bus 10, that is, the current generated by the second-type power supply module can be directly transmitted to the mains power grid 50 and / or the power consumption module 30. Therefore, a second-type inverter module 63 is electrically connected between each first-type power supply module and the grid bus 10. The second-type inverter module 63 is used to convert the direct current generated by the first-type power supply module into alternating current, and transmit the alternating current to the mains power grid 50 and / or the power consumption module 30 via the grid bus 10. The second-type inverter module 63 is also used to convert the alternating current transmitted from the mains power grid 50 via the grid bus 10 into direct current and store it in the energy storage module 25. 1 , when the power supply module 20 includes an energy storage power supply 25, a photovoltaic power generation device 27, a wind power generation device 27, and a diesel generator 27, the first type of power supply module includes the energy storage power supply 25, the photovoltaic power generation device 27, and the wind power generation device 27, and the second type of power supply module may include the diesel generator 27. It should be noted that, in some embodiments, the first group of power supply modules 21 may also include the first type of power supply module and the second type of power supply module.

[0050] In some embodiments, the number of first-type power supply modules in the second group of power supply modules 23 may correspond to the number of second-type inverter modules 63 in a one-to-one relationship. In some embodiments, each first-type power supply module (e.g., power generation module 27 and energy storage module 25) in the second group of power supply modules 23 corresponds to one second-type inverter module 63. For example, as shown in Figure 1, when the number of power supply modules 20 in the second group of power supply modules 23 is four (one photovoltaic power generation device 27, one wind power generation device 27, one energy storage power supply 25 and one diesel generator 27), the energy storage power supply 25, the photovoltaic power generation device 27 and the wind power generation device 27 are all first-class power supply modules, and the diesel generator 27 is a second-class power supply module. In this case, there are three second-class inverter modules 63, the photovoltaic power generation device 27 is electrically connected to the grid-connected bus 10 through one second-class inverter module 63, the wind power generation device 27 is electrically connected to the grid-connected bus 10 through another second-class inverter module 63, the energy storage power supply 25 is electrically connected to the grid-connected bus 10 through another second-class inverter module 63, and the diesel generator is directly electrically connected to the grid-connected bus 10.

[0051] The energy management module 40 may be an energy management system (EMS). Generally, the energy management module 40 may include functions such as data collection, data analysis and management, energy scheduling and optimization, and energy monitoring and alarming. Thus, the power distribution system 100 is provided with the energy management module 40 to detect, analyze, and manage energy, thereby achieving the purpose of reducing energy consumption, improving energy utilization efficiency, and ensuring energy supply security. In the present application, the energy management module 40 may obtain various data of the power distribution system 100 in real time, such as the total output power of the power supply module 20, the status of the power supply module 20, and the total power consumption of the power consumption module 30, etc., and process and analyze the obtained data to adjust the output power of at least part of the power supply module 20, thereby achieving optimal configuration and utilization of energy.

[0052] Specifically, referring to Figures 1 to 5, in some embodiments, the power supply module 20 can establish communication with the energy management module 40 via a wired connection or a wireless connection. A wired connection refers to the power supply module 20 electrically connecting to the energy management module 40 using a tangible medium such as a metal wire or optical fiber to establish communication, thereby enabling data signal transmission. A wireless connection refers to the power supply module 20 connecting to the energy management module 40 via Wi-Fi, 4G, or Bluetooth, thereby enabling data signal transmission. Specifically, when communication is established between the power supply module 20 and the energy management module 40, data from the power supply module 20 can be transmitted to the energy management module 40, which then analyzes the received data and outputs a corresponding control strategy to the power supply module 20. In some embodiments, if the power supply module 20 is a power generation module 27, the data from the power supply module 20 may include, for example, the output power of each power generation module 27 or the operating status of each power generation module 27. If the power supply module 20 is an energy storage module 25, the data from the power supply module 20 may also include, for example, the output power of the energy storage module 25, the amount of electricity stored in the energy storage module 25, and the operating status of the energy storage module 25. For example, when the data of the power supply module 20 includes the output power of each power supply module 20 (including the energy storage module 25 and the power generation module 27), the energy management module 40 can obtain the output power of each power supply module 20 to obtain the total output power of the power supply module 20.

[0053] It should be noted that, in certain embodiments, the control policy may be a type of protocol data transmitted by the energy management module 40 to the power supply module 20, thereby enabling the energy management module 40 to adjust the output power of at least a portion of the power supply module 20. In some examples, the control policy may be data pre-set in the energy management module 40, and the energy management module 40 may select a corresponding control policy based on the received data and output it to the power supply module 20. In other embodiments, the control policy may be a control policy manually input by a user based on data received by the energy management module 40.

[0054] More specifically, referring to FIG1 , in some embodiments, the energy management module 40 may be provided with a first communication unit 41, and the power supply module 20 may be provided with a second communication unit 29. The first communication unit 41 may be a module in the energy management module 40 responsible for communicating with other devices. The first communication unit 41 is capable of receiving signals transmitted from other devices to the energy management module 40, and transmitting signals from the energy management module 40 to other devices with which communication is established. Accordingly, the second communication unit 29 may be a module in the power supply module 20 responsible for communicating with other devices. The second communication unit 29 is capable of receiving signals transmitted from other devices to the power supply module 20, and transmitting signals from the power supply module 20 to other devices with which communication is established. It should be noted that, in some embodiments, each power supply module 20 is provided with a second communication unit 29. In other embodiments, at least some of the power supply modules 20 are provided with a second communication unit 29.

[0055] In some embodiments, communication between the first communication unit 41 and the second communication unit 29 can be established via a wired connection, or wirelessly. When communication is established between the first communication unit 41 and the second communication unit 29, the energy management module 40 can obtain the output power of each power supply module 20 through communication between the first communication unit 41 and the second communication unit 29. For example, the second communication unit 29 can transmit data from the power supply module 20 to the first communication unit 41, allowing the energy management module 40 to obtain the data from the power supply module 20, namely, the output power of each power supply module 20, through the first communication unit 41.

[0056] Referring to FIG. 2 , in other embodiments, the power distribution system 100 may further include a first smart socket 70. In some embodiments, the first smart socket 70 is connected between the inverter module 60 and the grid-connected bus 10. The first smart socket 70 is configured to detect the output power of the first group of power supply modules 21 or the output power of the corresponding first-type power supply modules in the second group of power supply modules 23. In other embodiments, the first smart socket 70 is connected between the second-type power supply modules in the second group of power supply modules 23 and the grid-connected bus 10. The first smart socket 70 is configured to detect the output power of the corresponding second-type power supply modules. The energy management module 40 is further configured to obtain each output power detected by the first smart socket 70.

[0057] Specifically, in some embodiments, the energy management module 40 can establish communication with the first smart socket 70 via a wired connection or a wireless connection. A wired connection can involve the energy management module 40 connecting to the first smart socket 70 via a tangible medium such as a metal wire or optical fiber to establish communication, thereby enabling signal transmission; a wireless connection can involve the energy management module 40 connecting to the first smart socket 70 via Wi-Fi, 4G, or Bluetooth to establish communication, thereby enabling signal transmission. Specifically, when the energy management module 40 establishes communication with the first smart socket 70, the energy management module 40 can obtain data from the first smart socket 70. For example, the energy management module 40 can obtain the output power of the first group of power supply modules 21 through the first smart socket 70 to obtain the total output power of the first group of power supply modules 21, and can also obtain the output power of each power supply module 20 in the second group of power supply modules 23 through the first smart socket 70 to obtain the total output power of the power supply modules.

[0058] Referring to FIG. 3 , in yet other embodiments, multiple power supply modules 20 and the energy management module 40 may be communicatively connected using both a communication unit and a smart socket. Specifically, a portion of the multiple power supply modules 20 is provided with a second communication unit 29, and the energy management module 40 is provided with a first communication unit 41. In this case, a portion of the multiple power supply modules 20 establishes a communication connection with the energy management module 40 via the first communication unit 41 and the second communication unit 29; another portion of the multiple power supply modules 20 establishes a communication connection with the energy management module 40 via the first smart socket 70. As a result, the energy management module 40 can obtain data from each power supply module 20, such as the output power of each power supply module 20. As shown in Figure 3, when the number of power supply modules 20 is six (including a photovoltaic power generation device, a storage power supply, a photovoltaic power generation device, a wind power generation device, a diesel generator, and a storage power supply), five of the six power supply modules 20 (including a photovoltaic power generation device, a storage power supply, a photovoltaic power generation device, a wind power generation device and an energy storage power supply) establish a communication connection with the energy management module 40 through the first smart socket 70, and the other one (including a diesel generator) is provided with a second communication unit 29, and establishes a communication connection with the first communication unit 41 of the energy management module 40 through the second communication unit 29.

[0059] Specifically, in some embodiments, the power module 30 can establish communication with the energy management module 40 via a wired connection or a wireless connection. A wired connection may be when the power module 30 connects to the energy management module 40 using a tangible medium such as a metal wire or an optical fiber to establish communication, thereby enabling the transmission of data signals; a wireless connection may be when the power module 30 connects to the energy management module 40 via Wi-Fi, 4G, or Bluetooth to establish communication, thereby enabling the transmission of data signals. Specifically, when the power module 30 establishes communication with the energy management module 40, data from the power module 30 can be transmitted to the energy management module 40, and the energy management module 40 can analyze the received data to output a corresponding control strategy to the power module 30. The data from the power module 30 may include the power consumption of each power module 30 or the working status of each power module 30, etc.

[0060] More specifically, referring to Figure 1 , in some embodiments, the power module 30 is equipped with a third communication unit 31. The third communication unit 31 is capable of receiving signals transmitted from other devices to the power module 30 and transmitting signals from the power module 30 to other devices with which it is communicating. It should be noted that in some embodiments, each power module 30 is equipped with a third communication unit 31. In other embodiments, at least some power modules 30 are equipped with a third communication unit 31.

[0061] In some embodiments, communication between the first communication unit 41 and the third communication unit 31 may be established via a wired connection, or wirelessly. When communication is established between the first communication unit 41 and the third communication unit 31, the energy management module 40 can obtain the power consumption of each power-consuming module 30 through communication between the first communication unit 41 and the third communication unit 31. For example, the third communication unit 31 can transmit data from the power-consuming module 30 to the first communication unit 41, allowing the energy management module 40 to obtain data from the power-consuming module 30, namely, the power consumption of each power-consuming module 30, through the first communication unit 41.

[0062] Please refer to Figure 2. In other embodiments, the power distribution system 100 may also include a second smart socket 80, which is electrically connected between the commercial power grid 50 and the power module 30. The second smart socket 80 is used to detect the power consumption of the power module 30, and the energy management module 40 is also used to obtain the power consumption of each power module 30 detected by the second smart socket 80.

[0063] Specifically, in some embodiments, the energy management module 40 can establish communication with the second smart socket 80 via a wired or wireless connection. A wired connection can involve the energy management module 40 using a tangible medium such as a metal wire or optical fiber to establish communication with the second smart socket 80, thereby enabling signal transmission. A wireless connection can involve the energy management module 40 using Wi-Fi, 4G, or Bluetooth to establish communication with the second smart socket 80, thereby enabling signal transmission. Specifically, when the energy management module 40 establishes communication with the second smart socket 80, the energy management module 40 can obtain data from the second smart socket 80. This data from the second smart socket 80 can include, for example, the power consumption of the power module 30 and the operating status of the power module 30.

[0064] Referring to Figure 3 , in yet other embodiments, the power module 30 and the energy management module 40 may communicate with each other using both a communication unit and a smart socket. Specifically, a portion of the power module 30 is provided with a third communication unit 31, and the energy management module 40 is provided with a first communication unit 41. In this case, a portion of the power module 30 communicates with the energy management module 40 via the first and third communication units 41. Another portion of the power module 30 communicates with the energy management module 40 via the second smart socket 80. This allows the energy management module 40 to obtain data from each power module 30, such as the output power of each power module 30. As shown in Figure 3, when the number of power modules 30 is four (including a light bulb, a washing machine, a computer and a light bulb), three of the four power modules 30 (including a light bulb, a washing machine and a light bulb) establish a communication connection with the energy management module 40 through the second smart socket 80, and the other one (including a computer) is provided with a third communication unit 31, and establishes a communication connection with the first communication unit 41 of the energy management module 40 through the third communication unit 31.

[0065] In summary, referring to FIG1 , in some embodiments, a communication unit (including a first communication unit 41, a second communication unit 29, and a third communication unit 31) can be used to establish a communication connection between the multiple power supply modules 20 and the energy management module 40, as well as between the power consumption module 30 and the energy management module 40. Referring to FIG2 , in other embodiments, a smart socket (including a first smart socket 70 and a second smart socket 80) can be used to establish a communication connection between the multiple power supply modules 20 and the energy management module 40, as well as between the power consumption module 30 and the energy management module 40. Referring to FIG3 , in still other embodiments, a communication unit and a smart socket can be used simultaneously to establish a communication connection between the multiple power supply modules 20 and the energy management module 40. Correspondingly, a communication unit and a smart socket can also be used simultaneously to establish a communication connection between the power consumption module 30 and the energy management module 40. Referring to FIG4 , in yet other embodiments, in the same power distribution system 100, multiple power supply modules 20 may be communicated with the energy management module 40 using only a communication unit (including the first communication unit 41 and the second communication unit 29), and the power consumption module 30 may be communicated with the energy management module 40 using only a smart socket (including the second smart socket 80). Referring to FIG5 , in yet other embodiments, in the same power distribution system 100, multiple power supply modules 20 may be communicated with the energy management module 40 using only a smart socket (including the first smart socket 70), and the power consumption module 30 may be communicated with the energy management module 40 using only a communication unit (including the first communication unit 41 and the third communication unit 31).

[0066] Please refer to Figures 1, 2, 3, 4 or 5. In some embodiments, the energy management module 40 may include a first energy management unit 43. The first energy management unit 43 is an independent structure and is electrically connected to the grid bus 10.

[0067] Specifically, in some embodiments, the first energy management unit 43 can be installed in an external environment and connected to devices such as the power supply module 20, the inverter module 60, the first smart socket 70, and the second smart socket 80 via a wired or wireless connection, so that data from the power supply module 20, the inverter module 60, the first smart socket 70, and the second smart socket 80 can be transmitted to the energy management module 40, thereby enabling the first energy management unit 43 to analyze the received data and output a control strategy. The independent arrangement of the first energy management unit 43 outside the power supply module 20 can improve the scalability of the power distribution system 100. For example, when it is necessary to expand devices in the power distribution system 100 (such as the power supply module 20, the inverter module 60, the first smart socket 70, and the second smart socket 80), it is only necessary to establish communication between the expanded devices and the first energy management unit 43 for normal use. In addition, the first energy management unit 43 is independently arranged outside the power supply module 20 and can be controlled and managed independently of the power supply module 20, the inverter module 60, the first smart socket 70 and the second smart socket 80 and other devices, thereby improving the flexibility of the first energy management unit 43, and the external first energy management unit 43 can select suitable power supply module 20 or inverter module 60 and other devices for control and management according to actual needs, so as to achieve reasonable configuration of energy in the distribution system 100.

[0068] Please refer to Figures 1, 2, 3, 4 or 5. In other embodiments, the energy management module 40 may include a second energy management unit 45, which is integrated into a first type inverter module 61 electrically connected to the first group of power supply modules 21.

[0069] Specifically, in certain embodiments, the second energy management unit 45 can be connected to devices such as the power supply module 20, the inverter module 60, the first smart socket 70, and the second smart socket 80 via a wired or wireless connection, so that data from the power supply module 20, the inverter module 60, the first smart socket 70, and the second smart socket 80 can be transmitted to the second energy management unit 45, thereby enabling the second energy management unit 45 to analyze the received data and output a control strategy. Integrating the second energy management unit 45 into a particular inverter module 60 not only avoids additional installation and wiring work, thereby simplifying the structure of the power distribution system 100, but also increases the speed at which the second energy management unit 45 receives data, thereby improving the response efficiency of the second energy management unit 45.

[0070] In certain embodiments, when the energy management module 40 includes a first energy management unit 43 and a second energy management unit 45, the first energy management unit 43 is configured to obtain the total output power of the first group of power supply modules 21 and the output power of each power supply module 20 in the second group of power supply modules 23 to obtain the total output power of the power supply modules 20; obtain the power consumption of each power consumption module 30 to obtain the total power consumption of the power consumption modules 30; and adjust the output power of at least some of the power supply modules 20 based on the total output power and the total power consumption. If the first energy management unit 43 malfunctions, the second energy management unit 45 takes over from the first energy management unit 43.

[0071] Specifically, in some embodiments, the first energy management unit 43 and the second energy management unit 45 can perform mutual detection to determine whether the other is operating normally. For example, one of the first energy management unit 43 and the second energy management unit 45 sends a detection signal to the other and receives a response signal from the other. The response signal is used to determine whether the other of the first energy management unit 43 and the second energy management unit 45 is abnormal. If the second energy management unit 45 sends a detection signal to the first energy management unit 43 but does not receive a response signal returned by the first energy management unit 43, the second energy management unit 45 can determine that the first energy management unit 43 is abnormal (for example, downtime, etc.), and thus the second energy management unit 45 can take over the work of the first energy management unit 43, that is, in this case, the second energy management unit 45 can obtain the total output power of the first group of power supply modules 21 and the output power of each power supply module 20 in the second group of power supply modules 23 to obtain the total output power of the power supply module 20; obtain the power consumption of each power module 30 to obtain the total power consumption of the power module 30; and adjust the output power of at least part of the power supply modules 20 according to the total output power and the total power consumption, thereby preventing the problem of the distribution system 100 being unable to work when the first energy management unit 43 is abnormal, thereby improving the stability of the distribution system 100.

[0072] 1 and 6 , an embodiment of the present application provides a power distribution method, which is applied to the power distribution system 100 in any of the above embodiments. The power distribution method includes:

[0073] 01: Obtain the total output power of the first group of power supply modules 21 and the output power of each power supply module 20 in the second group of power supply modules 23 to obtain the total output power of the power supply modules 20;

[0074] 03: Obtain the power consumption of each power module 30 to obtain the total power consumption of the power modules 30; and

[0075] 05: Adjust the output power of at least part of the power supply modules 20 according to the total output power and the total power consumption.

[0076] The power supply modules 20 (including the first group of power supply modules 21 and the second group of power supply modules 23) and the power consumption modules 30 in this embodiment are substantially the same as the power supply modules 20 (including the first group of power supply modules 21 and the second group of power supply modules 23) and the power consumption modules 30 in the above-described embodiment, and are not further described herein. Specifically, the energy management module 40 is configured to obtain the output power of each power supply module 20 (including the energy storage module 25 and the power generation module 27) to obtain the total output power of the power supply modules 20; obtain the power consumption of each power consumption module 30 to obtain the total power consumption of the power consumption modules 30; and adjust the output power of at least some of the power supply modules 20 based on the total output power and the total power consumption.

[0077] Specifically, when the energy management module 40 includes a first energy management unit 43 and a second energy management unit 45, the first energy management unit 43 is used to execute the above-mentioned power distribution method. When the first energy management unit 43 is abnormal, the second energy management unit 45 takes over the work of the first energy management unit 43, that is, the second energy management unit 45 is used to execute the above-mentioned power distribution method.

[0078] In the power distribution method of the embodiment of the present application, the total output power of the first group of power supply modules 21 and the output power of each power supply module 20 in the second group of power supply modules 23 are obtained to obtain the total output power of the power supply module 20, and the power consumption of each power module 30 is obtained to obtain the total power consumption of the power module 30, and the output power of at least part of the power supply modules 20 is adjusted according to the total output power and the total power consumption, so that the total output power of the power supply module 20 can be adaptively adjusted according to the changes of the power module 30, thereby ensuring the normal operation of the power distribution system 100.

[0079] In some embodiments, the power generation module 27 includes an adjustable power generation module. Specifically, referring to FIG1 , in some embodiments, when the power generation module 27 is a diesel generator, a photovoltaic power generation device, or a wind power generation device, the diesel generator is a power generation module with adjustable output power, while the photovoltaic power generation device and the wind power generation device are power generation modules with non-adjustable output power. Generally, photovoltaic power generation devices and wind power generation devices generally output power in a manner that maximizes output. Therefore, generally, photovoltaic power generation devices and wind power generation devices are power generation modules with non-adjustable output power. It should be noted that, in some embodiments, the diesel generator can increase the output power of the diesel generator by increasing the fuel supply, increasing the intake volume, or increasing the cylinder pressure; or the diesel generator can reduce the output power of the diesel generator by reducing the fuel supply, reducing the intake volume, or reducing the cylinder pressure.

[0080] Referring to FIG. 1 and FIG. 7 , in some embodiments, 05: adjusting the output power of at least part of the power supply module 20 according to the total output power and the total power consumption, further comprising:

[0081] 051: When the total output power is less than the total power consumption, increase the output power of the energy storage module 25 and / or increase the output power of the adjustable power generation module.

[0082] In some embodiments, the energy management module 40 is further configured to increase the output power of the energy storage module 25 and / or increase the output power of the adjustable power generation module when the total output power is less than the total power consumption.

[0083] Among them, the energy storage module 25 in this embodiment is basically the same as the energy storage module 25 in the above embodiment, and will not be described in detail here. Specifically, when the total output power of the power supply module 20 is less than the total power consumption of the power module 30, the total output power of the power supply module 20 cannot meet the power demand of the power module 30. In this case, at least part of the power module 30 will not be able to work normally. Therefore, after analyzing the total output power and the total power consumption, the energy management module 40 can send a control strategy to the energy storage module 25 and / or the adjustable power generation module to increase the output power of the energy storage module 25 and / or increase the output power of the adjustable power generation module. It can be understood that the first group of power supply modules 21 and the second group of power supply modules 23 can both include an energy storage module 25 and an adjustable power generation module. When the first power supply module 21 and the second power supply module 23 both include an energy storage module 25 and an adjustable power generation module, the energy management module 40 is used to: when the total output power is less than the total power consumption, increase the output power of the energy storage module 25 in the first power supply module 21 and / or increase the output power of the adjustable power generation module in the first power supply module 21, and increase the output power of the energy storage module 25 in the second power supply module 23 and / or increase the output power of the adjustable power generation module in the second power supply module 23.

[0084] In addition, in some embodiments, if the output power of the photovoltaic power generation device and the wind power generation device is adjustable, the photovoltaic power generation device and the wind power generation device can also serve as adjustable power generation modules and be applicable to the power distribution method in this application.

[0085] In one embodiment, when the total output power is less than the total power consumption, the energy management module 40 can increase the output power of the energy storage module 25 (including the energy storage module 25 in the first group of power supply modules 21 and / or the energy storage module 25 in the second group of power supply modules 23) so that the sum of the total output power of the power generation module 27 and the output power of the energy storage module 25 is approximately equal to the total power consumption of the power consumption module 30. This allows the power distribution system 100 to achieve self-generation and self-consumption while meeting the power demand of the power consumption module 30, thereby reducing the power consumption cost of the power distribution system 100. It can be understood that when the energy management module 40 increases the output power of the energy storage module 25 so that the sum of the total output power of the power generation module 27 and the output power of the energy storage module 25 is equal to the total power consumption of the power consumption module 30, the power distribution system 100 is in the optimal state of self-generation and self-consumption, and the energy configuration of the power distribution system 100 is optimal. Therefore, when the energy management module 40 increases the output power of the energy storage module 25 so that the sum of the total output power of the power generation module 27 and the output power of the energy storage module 25 is slightly greater than the total power consumption of the power consumption module 30, the energy management module 40 can control the energy storage module 25 to transmit the excess electric energy to the mains power grid 50 electrically connected to the grid bus 10 through the grid-connected bus 10, so as to achieve that the total output power of the power supply module 20 is equal to the total power consumption of the power consumption module 30; when the energy management module 40 increases the output power of the energy storage module 25 so that the sum of the total output power of the power generation module 27 and the output power of the energy storage module 25 is slightly less than the total power consumption of the power consumption module 30, the energy management module 40 can continue to increase the output power of the energy storage module 25 so as to achieve that the total output power of the power supply module 20 is equal to the total power consumption of the power consumption module 30.

[0086] In another embodiment, when the total output power is less than the total power consumption, the energy management module 40 can increase the output power of the adjustable power generation modules (including the adjustable power generation modules in the first group of power supply modules 21 and / or the adjustable power generation modules in the second group of power supply modules 23) so that the sum of the total output power of the power generation module 27 and the output power of the energy storage module 25 is approximately equal to the total power consumption of the power consumption module 30. This allows the power distribution system 100 to achieve the effect of self-generation and self-consumption while meeting the power demand of the power consumption module 30, thereby reducing the power consumption cost of the power distribution system 100. For example, the energy management module 40 can increase the output power of the diesel generator so that the sum of the total output power of the power generation module 27 and the output power of the energy storage module 25 is approximately equal to the total power consumption of the power consumption module 30. It can be understood that when the energy management module 40 increases the output power of the adjustable power generation module so that the sum of the total output power of the power generation module 27 and the output power of the energy storage module 25 is equal to the total power consumption of the power consumption module 30, the distribution system 100 is in the optimal state of self-generation and self-use, and the energy configuration of the distribution system 100 is optimal. Therefore, when the energy management module 40 increases the output power of the adjustable power generation module so that the sum of the total output power of the power generation module 27 and the output power of the energy storage module 25 is slightly greater than the total power consumption of the power consumption module 30, the energy management module 40 can control the adjustable power generation module to transmit excess electric energy to the mains power grid 50 electrically connected to the grid bus 10 through the grid bus 10, or to the energy storage module 25 electrically connected to the grid bus 10 through the grid bus 10, so as to achieve that the total output power of the power supply module 20 is equal to the total power consumption of the power consumption module 30; when the energy management module 40 increases the output power of the adjustable power generation module so that the sum of the total output power of the power generation module 27 and the output power of the energy storage module 25 is slightly less than the total power consumption of the power consumption module 30, the energy management module 40 can continue to increase the output power of the adjustable power generation module so as to achieve that the total output power of the power supply module 20 is equal to the total power consumption of the power consumption module 30.

[0087] In another embodiment, when the total output power is less than the total power consumption, the energy management module 40 can increase both the output power of the energy storage module 25 and the output power of the adjustable power generation module, so that the sum of the total output power of the power generation module 27 and the output power of the energy storage module 25 is approximately equal to the total power consumption of the power module 30. In this way, the power distribution system 100 can achieve the effect of self-generation and self-use while meeting the power demand of the power module 30, thereby reducing the power consumption cost of the power distribution system 100.

[0088] Referring to FIG. 1 and FIG. 8 , in some embodiments, the power distribution method further includes:

[0089] 07: When the total output power is less than the total power consumption, the commercial power grid 50 is controlled to supply power to the power consumption module 30 .

[0090] In some embodiments, the grid bus 10 is electrically connected to the mains power grid 50. The energy management module 40 is further configured to control the mains power grid 50 to supply power to the power consumption module 30 when the total output power is less than the total power consumption.

[0091] Since the adjustable output power of the adjustable power generation module has a maximum value, and the energy storage module 25 has a limited amount of stored electrical energy, the total output power of the power supply module 20 has a maximum value. For example, when the electrical energy stored in the energy storage module 25 is exhausted, the maximum value of the total output power of the power supply module 20 is the sum of the output power of the adjustable power generation module at its maximum output and the total output power of the non-adjustable power generation module. If, when the total output power of the power supply module 20 is at its maximum value, the total output power of the power supply module 20 is still less than the total power consumption of the power consumption module 30, that is, the total output power of the power supply module 20 cannot meet the power consumption demand of the power consumption module 30, the power consumption module 30 will not function normally.

[0092] Therefore, specifically, when the total output power (including the total output power of the energy storage module 25 and the total output power of the power generation module 27) is less than the total power consumption of the power consumption module 30, in order to ensure the normal operation of the power consumption module 30, the energy management module 40 can control the mains power grid 50 to supply power to the power consumption module 30, so that the sum of the total output power of the power supply module 20 and the output power of the mains module to supply power to the power consumption module 30 is equal to the total power consumption of the power consumption module 30, thereby ensuring the normal operation of the power consumption module 30 while achieving the optimization of the energy configuration of the distribution system 100.

[0093] Referring to FIG. 1 and FIG. 9 , in some embodiments, the power distribution method further includes:

[0094] 08: When the total output power of the power supply module 20 is greater than the total power consumption, the energy storage module 25 is controlled to stop supplying power to the power consumption module 30; and

[0095] 09: When the total output power of the power generation module 27 is greater than the total power consumption, the power generation module 27 is controlled to supply power to the energy storage module 25 and / or the commercial power grid 50; or the power generation power of the adjustable power generation module is reduced.

[0096] In some embodiments, the energy management module 40 is also used to: when the total output power of the power supply module 20 is greater than the total power consumption, control the energy storage module 25 to stop supplying power to the power consumption module 30; and when the total output power of the power generation module 27 is greater than the total power consumption, control the power generation module 27 to supply power to the energy storage module 25 and / or the mains power grid 50; or reduce the power generation power of the adjustable power generation module.

[0097] Specifically, in some embodiments, when the total output power of the power supply module 20 (including the energy storage module 25 and the power generation module 27) is greater than the total power consumption of the power module 30, the output power of the power supply module 20 exceeds the power demand of the power module 30. In this case, at least part of the power module 30 may be damaged. Therefore, after analyzing the total output power and the total power consumption, the energy management module 40 can send a control strategy to the energy storage module 25 and the power generation module 27 to control the energy storage module 25 to stop supplying power to the power module 30; and when the total output power of the power generation module 27 is greater than the total power consumption, control the power generation module 27 to supply power to the energy storage module 25 and / or the mains power grid 50; or reduce the power generation power of the adjustable power generation module.

[0098] Among them, when the total output power of the power supply module 20 (including the energy storage module 25 and the power generation module 27) is greater than the total power consumption of the power module 30, the energy management module 40 can control the energy storage module 25 (including the energy storage module 25 in the first group of power supply modules 21 and / or the energy storage module 25 in the second group of power supply modules 23) to stop supplying power to the power module 30 so that it can be stored for family use; and if the total output power of the power generation module 27 is still greater than the total power consumption after the energy storage module 25 stops supplying power to the power module 30, the energy management module 40 can also control the power generation module 27 to supply power to the energy storage module 25 and / or the mains power grid 50, so that after the energy storage module 25 stops supplying power to the power module 30, the total output power of the power generation module 27 is equal to the total power consumption. It should be noted that, in some embodiments, the power generation module 27 can supply power to the energy storage module 25 via the grid bus 10 to store the electric energy in the energy storage module 25 for backup; or the power generation module 27 can supply power to the mains power grid 50 via the grid bus 10 to sell excess electric energy to the power company to generate revenue; or the power generation module 27 can supply power to both the energy storage module 25 and the mains power grid 50 via the grid bus 10. For example, when the power generation module 27 supplies power to the energy storage module 25 via the grid bus 10, and when the electric energy that can be stored in the energy storage module 25 reaches the limit value (maximum value), the power generation module 27 can supply power to the mains power grid 50 via the grid bus 10.

[0099] It is understood that in certain embodiments, if the total output power of the power supply module 20 is greater than the total power consumption, the energy storage module 25 is controlled to stop supplying power to the power consumption module 30. After the energy storage module 25 is controlled to stop supplying power to the power consumption module 30, if the total output power of the power generation module 27 is less than the total power consumption of the power consumption module 30, the energy management module 40 can restart the energy storage module 25 and increase the output power of the energy storage module 25 and / or increase the output power of the adjustable power generation module, so that the sum of the total output power of the power generation module 27 and the output power of the energy storage module 25 is approximately equal to the total power consumption of the power consumption module 30. In this way, the power distribution system 100 can achieve the effect of self-generation and self-consumption while meeting the power consumption demand of the power consumption module 30, thereby reducing the power consumption cost of the power distribution system 100. The specific manner in which the energy management module 40 increases the output power of the energy storage module 25 and / or the output power of the adjustable power generation module is basically the same as that in the above embodiment and will not be repeated here.

[0100] In certain embodiments, when only the power generation module 27 supplies power to the power consumption module 30, and the total output power of the power generation module 27 is greater than the total power consumption, the energy management module 40 is further configured to control the power generation module 27 to supply power to the energy storage module 25 and / or the utility grid 50. The specific manner in which the energy management module 40 controls the power generation module 27 to supply power to the energy storage module 25 and / or the utility grid 50 is substantially the same as in the above-described embodiment and is not further described herein.

[0101] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0102] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0103] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing the logical functions, and can be embodied in any storage medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a storage medium can be any device that can contain, store, communicate, propagate, or transmit a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of storage media include the following: an electrical connection having one or more wires (electronic device), a portable computer disk cartridge (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). Furthermore, the storage medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing it in another suitable manner if necessary, and then storing it in a computer memory.

[0104] It should be understood that various parts of the present application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used to implement: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0105] Those skilled in the art will appreciate that all or part of the steps carried out in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program can be stored in a storage medium, which, when executed, includes one of the steps of the method embodiment or a combination thereof. In addition, the functional units in the various embodiments of the present application can be integrated into a processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. The above-mentioned storage medium can be a read-only memory, a disk or an optical disk, etc.

[0106] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A power distribution system, wherein: include: A grid-connected bus, the grid-connected bus being used to electrically connect the power-consuming modules; An inverter module, wherein the inverter module includes a first type inverter module and a second type inverter module, wherein the first type inverter module and the second type inverter module are both electrically connected to the grid-connected bus; A plurality of power supply modules, wherein the plurality of power supply modules are used to supply power to the power-consuming modules, the plurality of power supply modules include a first group of power supply modules and a second group of power supply modules, the first group of power supply modules includes at least two of the power supply modules, a first-type inverter module is connected between the first group of power supply modules and the grid-connected bus, at least some of the power supply modules in the second group of power supply modules are directly electrically connected to the grid-connected bus, and / or a second-type inverter module is connected between at least some of the power supply modules in the second group of power supply modules and the grid-connected bus; and An energy management module, the energy management module is electrically connected to the grid-connected bus, and the energy management module is used to obtain the total output power of the first group of power supply modules and the output power of each of the power supply modules in the second group of power supply modules to obtain the total output power of the power supply modules; The power consumption of each of the power-consuming modules is acquired to obtain the total power consumption of the power-consuming modules; and the output power of at least part of the power supply modules is adjusted according to the total output power and the total power consumption.

2. The power distribution system according to claim 1, wherein: The plurality of power supply modules include energy storage modules and power generation modules, wherein the power generation modules include adjustable power generation modules; the energy management module is also used for: When the total output power is less than the total power consumption, the output power of the energy storage module is increased and / or the output power of the adjustable power generation module is increased.

3. The power distribution system according to claim 1, wherein: The grid-connected bus is connected to the mains power grid; the energy management module is also used to: when the total output power is less than the total power consumption, control the mains power grid to supply power to the power consumption module.

4. The power distribution system according to claim 1, wherein: The plurality of power supply modules include energy storage modules and power generation modules, wherein the power generation modules include adjustable power generation modules; the energy management module is also used for: When the total output power of the power supply module is greater than the total power consumption, controlling the energy storage module to stop supplying power to the power consumption module; and When the total output power of the power generation module is greater than the total power consumption, the power generation module is controlled to supply power to the energy storage module and / or the commercial power grid; or the power generation power of the adjustable power generation module is reduced.

5. The power distribution system according to claim 1, wherein: The energy management module comprises a first energy management unit, the first energy management unit is an independent structure and is electrically connected to the grid-connected bus; and / or The energy management module includes a second energy management unit, which is integrated in the first type of inverter module electrically connected to the first group of power supply modules.

6. The power distribution system according to claim 1, wherein: The second group of power supply modules includes a first type of power supply module, the first type of power supply module is used to generate direct current, and the first type of power supply module includes an energy storage module; A first-class inverter module is connected between each of the first-class power supply modules and the grid-connected bus. The first-class inverter module is used to convert the direct current generated by the first-class power supply module into alternating current, and transmit the alternating current to the mains power grid and / or the power consumption module through the grid-connected bus. The first-class inverter module is also used to convert the alternating current transmitted from the mains power grid through the grid-connected bus into direct current and store it in the energy storage module.

7. The power distribution system according to claim 6, wherein: The second group of power supply modules includes second type power supply modules; the second type power supply modules are directly electrically connected to the grid-connected bus.

8. The power distribution system according to claim 7, wherein: The power distribution system further includes a first smart socket, which is electrically connected between the first type inverter module and the grid-connected bus, and is used to detect the output power of the first group of power supply modules or the corresponding first type of power supply module. module; or, the first smart socket is electrically connected between the second type power supply module and the grid-connected bus, and the first smart socket is used to detect the output power of the corresponding second type power supply module; the energy management module is also used to obtain each output power detected by the first smart socket; and / or The power distribution system also includes a second smart socket, which is electrically connected between the commercial power grid and the power-consuming module. The second smart socket is used to detect the power consumption of the power-consuming module. The energy management module is also used to obtain the power consumption of each power-consuming module detected by the second smart socket.

9. The power distribution system according to claim 1, wherein: The energy management module is provided with a first communication unit, the power supply module is provided with a second communication unit, and the energy management module obtains the output power of each power supply module through communication between the first communication unit and the second communication unit; and / or The energy management module is provided with a first communication unit, and the power consumption module is provided with a third communication unit. The energy management module obtains the power consumption of each power consumption module through communication between the first communication unit and the third communication unit.

10. The power distribution system according to claim 1, wherein: In the case where the energy management module includes a first energy management unit and a second energy management unit, the first energy management unit is used to obtain the total output power of the first group of power supply modules and the output power of each of the power supply modules in the second group of power supply modules to obtain the total output power of the power supply modules; obtain the power consumption of each of the power-consuming modules to obtain the total power consumption of the power-consuming modules; and adjust the output power of at least part of the power supply modules according to the total output power and the total power consumption; in the case of an abnormality in the first energy management unit, the second energy management unit takes over the first energy management unit.

11. A power distribution method, applied to a power distribution system, wherein: The power distribution system includes a grid-connected bus, an inverter module, a plurality of power supply modules and an energy management module; the grid-connected bus is used to electrically connect the power-consuming modules; the inverter module includes a first-type inverter module and a second-type inverter module, and the first-type inverter module and the second-type inverter module are both electrically connected to the grid-connected bus; the plurality of power supply modules are used to supply power to the power-consuming modules, and the plurality of power supply modules include a first group of power supply modules and a second group of power supply modules, and the first group of power supply modules includes at least two power supply modules, and one of the first-type inverter modules is connected between the first group of power supply modules and the grid-connected bus, and each of the power supply modules in the second group of power supply modules is directly electrically connected to the grid-connected bus, and / or one of the second-type inverter modules is connected between each of the power supply modules in the second group of power supply modules and the grid-connected bus; The power distribution method comprises: Obtaining the total output power of the first group of power supply modules and the output power of each of the power supply modules in the second group of power supply modules to obtain the total output power of the power supply modules; Acquiring the power consumption of each of the power-consuming modules to obtain the total power consumption of the power-consuming modules; and The output power of at least part of the power supply modules is adjusted according to the total output power and the total power consumption.

12. The power distribution method according to claim 11, wherein: The plurality of power supply modules include energy storage modules and power generation modules, and the power generation modules include adjustable power generation modules; The adjusting the output power of at least part of the power supply module according to the total output power and the total power consumption includes: When the total output power is less than the total power consumption, the output power of the energy storage module is increased and / or the output power of the adjustable power generation module is increased.

13. The power distribution method according to claim 11, wherein: The power distribution method further comprises: When the total output power is less than the total power consumption, the mains power grid is controlled to supply power to the power consumption module.

14. The power distribution method according to claim 11, wherein: The plurality of power supply modules include energy storage modules and power generation modules, and the power generation modules include adjustable power generation modules; the power distribution method further includes: When the total output power of the power supply module is greater than the total power consumption, controlling the energy storage module to stop supplying power to the power consumption module; and When the total output power of the power generation module is greater than the total power consumption, the power generation module is controlled to supply power to the energy storage module and / or the commercial power grid; or the power generation power of the adjustable power generation module is reduced.

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