Distributed energy system for small businesses

Abstract

This application relates to a distributed energy system for small-scale industrial and commercial use, comprising a grid dispatch response module, an energy gateway, and distributed energy sources connected in sequence. The grid dispatch response module is also connected to an external grid control device for receiving and forwarding dispatch instructions issued by the grid control device. The energy gateway transmits the dispatch instructions sent by the grid dispatch response module to the distributed energy sources. The distributed energy sources are also connected to a low-voltage grid for changing their grid-connected operating mode according to the dispatch instructions. This solves the problem of not being able to flexibly adjust power generation according to the actual needs of the grid. It enables the distributed energy sources to receive dispatch instructions from the local grid through a communication module and the energy grid, flexibly adjust the energy delivered to the grid, and improve the quality and stability of grid operation.

Description

Technical Field

[0001] This application relates to the field of power system control technology, and in particular to a distributed energy system for small-scale industrial and commercial use. Background Technology

[0002] For small businesses, energy costs constitute a significant proportion of overall operating expenses. Over-reliance on traditional energy sources not only exposes them to the risks of price fluctuations but also to supply instability. Therefore, an increasing number of small businesses are turning to photovoltaic (PV) energy to enhance the stability and security of their energy supply. With the growing prevalence of PV systems, excess electricity generated can be fed back into the grid, creating additional revenue for businesses.

[0003] Currently, some photovoltaic systems are equipped with basic energy management functions, which can collect and analyze data such as the company's electricity demand or weather conditions through energy gateways, thereby optimizing the inverter's operating status.

[0004] However, the existing dispatching model is only self-oriented, which means that in many regions, the power generation cannot be flexibly adjusted according to the actual needs of the power grid, thus affecting the supply and demand balance of the power grid. Utility Model Content

[0005] This embodiment provides a distributed energy system for small-scale industrial and commercial use to solve the problem in related technologies that the power generation cannot be flexibly adjusted according to the actual needs of the power grid.

[0006] In a first aspect, this embodiment provides a distributed energy system for small-scale industrial and commercial use, comprising: a grid dispatch response module, an energy gateway, and distributed energy sources connected in sequence;

[0007] The power grid dispatch response module is also connected to an external power grid control device to respond to control commands issued by the power grid control device and output dispatch commands corresponding to the control commands.

[0008] The energy gateway is used to transmit the dispatching instructions sent by the power grid dispatching response module to the distributed energy source;

[0009] The distributed energy source is also connected to the low-voltage power grid and is used to select the corresponding working mode under the dispatch command in order to regulate the energy input to the low-voltage power grid.

[0010] In some embodiments, the power grid dispatch response module includes at least one first controlled switch;

[0011] One end of each of the first controlled switches is connected to the power supply.

[0012] The other end of each of the first controlled switches is connected to the acquisition port corresponding to the energy gateway;

[0013] Each of the first controlled switches changes its switch state under the action of different control commands from the power grid control equipment, so as to output the corresponding scheduling command.

[0014] In some embodiments, the power grid dispatch response module further includes a first resistor and at least one second controlled switch;

[0015] One end of each of the second controlled switches is connected to the operating power supply through the first resistor;

[0016] The other end of each of the second controlled switches is connected to one of the first controlled switches via a shared acquisition port;

[0017] Each of the second controlled switches and the corresponding first controlled switches changes the switching state of at least one of them under the action of different control commands from the power grid control equipment, so as to output the corresponding scheduling command.

[0018] In some embodiments, the first controlled switch and the second controlled switch respectively include an analog switch and a digital switch;

[0019] The analog switch is used to respond to and transmit the power adjustment command in the scheduling command;

[0020] The digital switch is used to respond to and transmit the switching command in the scheduling instruction.

[0021] In some of these embodiments, the energy gateway includes: a digital signal acquisition module, an analog signal acquisition module, an RS485 communication module, and a control module;

[0022] The digital signal acquisition module is connected to the digital switch and is used to acquire the power adjustment command;

[0023] The analog signal acquisition module is connected to the analog switch and is used to acquire the switch command;

[0024] The control module is connected to the digital signal acquisition module and the analog signal acquisition module, and is used for protocol encapsulation.

[0025] The RS485 communication module is connected to the control module and the distributed energy source, and is used to transmit the protocol-encapsulated power regulation command and / or the switching command to the distributed energy source.

[0026] In some embodiments, the distributed energy source includes: an inverter, and photovoltaic panels and energy storage batteries connected to the inverter;

[0027] The photovoltaic panel is used to convert solar energy into electrical energy;

[0028] The energy storage battery is used to store the electrical energy provided by the photovoltaic panel or to release electrical energy.

[0029] The inverter is also connected to the energy gateway and the low-voltage grid, and is used to receive the dispatch command and control the energy storage battery to operate in charging mode or discharging mode under the dispatch command.

[0030] In some of these embodiments, the distributed energy system for small industrial and commercial use further includes: an adjustable load;

[0031] The adjustable load is connected to the energy gateway and is used to consume excess electrical energy generated by the photovoltaic panel under the control of the energy gateway.

[0032] In some embodiments, the energy gateway is communicatively connected to the inverter, the energy storage battery, and the adjustable load, respectively, to receive real-time operating data from the inverter, the energy storage battery, and the adjustable load.

[0033] In some of these embodiments, the distributed energy system for small-scale industrial and commercial use further includes: a router and a cloud platform;

[0034] The router is connected to the energy gateway via a network and is used for data forwarding;

[0035] The cloud platform is communicatively connected to the router and is used to receive and record the scheduling instructions as well as the real-time operating data of the inverter, the energy storage battery, and the adjustable load.

[0036] In some of these embodiments, the distributed energy system for small-scale industrial and commercial use further includes: electricity meters;

[0037] The electricity meter is installed at the inlet of the user circuit and connected to the energy gateway. It is used to collect the power parameters of the user circuit and send them to the energy gateway.

[0038] Compared with related technologies, the distributed energy system for small-scale industrial and commercial use provided in this embodiment consists of a grid dispatch response module, an energy gateway, and distributed energy sources connected in sequence. The grid dispatch response module is also connected to an external grid control device to receive and forward dispatch instructions issued by the grid control device. The energy gateway is used to transmit the dispatch instructions sent by the grid dispatch response module to the distributed energy sources. The distributed energy sources are also connected to a low-voltage grid to change their grid-connected operating mode according to the dispatch instructions. This solves the problem of not being able to flexibly adjust power generation according to the actual needs of the grid. By forwarding dispatch instructions layer by layer through the grid dispatch response module and the energy gateway, the distributed energy sources can accept the dispatch of the local grid, flexibly adjust the energy delivered to the grid, and improve the quality and stability of grid operation.

[0039] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0040] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0041] Figure 1 This is a structural block diagram of a distributed energy system for small-scale industrial and commercial use in one embodiment of this application;

[0042] Figure 2 This is a schematic diagram of a power grid dispatch response module in one embodiment of this application;

[0043] Figure 3 This is a schematic diagram of an energy gateway in one embodiment of this application;

[0044] Figure 4 This is a schematic diagram of distributed energy in one embodiment of this application;

[0045] Figure 5 This is a topology diagram of a distributed energy system for small-scale industrial and commercial enterprises in one embodiment of this application.

[0046] Reference numerals: 100, Power grid dispatch response module; 200, Energy gateway; 210, Digital signal acquisition module; 220, Analog signal acquisition module; 230, RS485 communication module; 240, Control module; 300, Distributed energy source; 310, Inverter; 320, Photovoltaic panel; 330, Energy storage battery. Detailed Implementation

[0047] To better understand the purpose, technical solution, and advantages of this application, the application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0048] Unless otherwise defined, the technical or scientific terms used in this application shall have the general meaning understood by one of ordinary skill in the art to which this application pertains. Words such as “a,” “an,” “an,” “the,” “the,” and “these” used in this application do not indicate quantitative limitation and may be singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or modules (units) is not limited to the listed steps or modules (units) but may include steps or modules (units) not listed, or may include other steps or modules (units) inherent to these processes, methods, products, or devices. Words such as “connected,” “linked,” and “coupled” used in this application are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. “Multiple” used in this application refers to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can represent: A alone, A and B simultaneously, and B alone. Normally, the character " / " indicates that the objects before and after it are in an "or" relationship. The terms "first," "second," "third," etc., used in this application are merely to distinguish similar objects and do not represent a specific order of objects.

[0049] This embodiment provides a distributed energy system for small-scale industrial and commercial applications. In such applications, a more complex monitoring and energy management system is required to monitor multiple parameters such as power generation, load changes, and power quality in real time. This system is larger and more complex than a home energy system. Figure 1 This is a structural block diagram of a distributed energy system for small-scale industrial and commercial use in this embodiment. Figure 1 As shown, the distributed energy system for small-scale industrial and commercial use includes: a grid dispatch response module 100, an energy gateway 200, and a distributed energy source 300 connected in sequence.

[0050] The power grid dispatch response module 100 is also connected to external power grid control equipment to respond to control commands issued by the power grid control equipment and output dispatch commands corresponding to the control commands. Specifically, the external power grid control equipment sends relevant control commands according to local grid connection requirements and actual needs. The power grid dispatch response module 100 converts the control commands sent by the power grid control equipment, such as "peak shaving and valley filling" and "emergency load reduction," into physical signals that the energy gateway 200 can recognize.

[0051] The energy gateway 200 is used to transmit dispatch instructions sent by the grid dispatch response module 100 to the distributed energy source 300. Specifically, the energy gateway 200 has a built-in digital signal sampling module or analog signal sampling module to sample signals, obtain dispatch instructions, and forward the dispatch instructions to the distributed energy source 300. The energy gateway 200 provides unified management of the distributed energy source 300, facilitating its expansion and upgrade.

[0052] The distributed energy source 300 is also connected to the low-voltage grid to select the corresponding operating mode under dispatch commands, thereby regulating the energy input to the low-voltage grid. Specifically, the distributed energy source 300 includes a grid-connected unit and a power generation device, which includes, but is not limited to, photovoltaic panels 320, wind power generation devices, etc. The power generation device is connected to the low-voltage grid through the grid-connected unit. The grid-connected unit receives dispatch commands and generates a PWM signal using a built-in timer module (such as TIM1 in STM32). The built-in isolation driver chip (such as IR2110) amplifies the low-voltage PWM signal to a gate drive level suitable for the power transistor, thereby controlling the grid-connected unit to operate in a power reduction mode (reducing the output power of the grid-connected unit) or a power increase mode (increasing the output power of the grid-connected unit).

[0053] In this embodiment, the power grid control equipment, the power grid dispatch response module 100, the energy gateway 200, and the distributed energy source 300 are sequentially connected and communicate with each other, enabling the distributed energy source 300 to receive dispatch from the local power grid. Specifically, the power grid dispatch response module 100 receives and forwards dispatch instructions issued by the power grid control equipment; the energy gateway 200 transmits the dispatch instructions sent by the power grid dispatch response module 100 to the distributed energy source 300; and the distributed energy source 300 changes its grid-connected operating mode according to the dispatch instructions, solving the problem of not being able to flexibly adjust power generation according to the actual needs of the power grid, and improving the quality and stability of power grid operation.

[0054] In some embodiments, the power grid dispatch response module 100 includes at least one first controlled switch. One end of each first controlled switch is connected to the working power supply; the other end of each first controlled switch is connected to the corresponding acquisition port of the energy gateway 200; each first controlled switch changes its switch state under the action of different control commands from the power grid control equipment to output corresponding dispatch commands.

[0055] For details, see Figure 2Each of the first controlled switches (S5, S6, S7, S8) is independent and can output different scheduling commands. For example, when the power grid needs to reduce its power supply, the power grid control device sends a first command → closes the first controlled switch S8 → the corresponding acquisition port of the energy gateway 200 detects a high level → the distributed energy 300 immediately shuts off the discharge module of the energy storage battery 330, or the power grid control device sends a first command to control other first controlled switches to reduce the inverter's power output, or changes the energy storage battery's discharge mode to a charging mode so that the inverter's power output charges the energy storage battery. The correspondence between the first controlled switches and the control functions can be set as needed, and is not limited in this embodiment. When the power grid needs to increase its power supply, the control device sends a second command → closes the first controlled switch S5 → the corresponding acquisition port of the energy gateway 200 detects an analog signal → the distributed energy 300 increases its output power. The distributed energy 300 can also use other methods to achieve the effect of increasing the power supply, which can be configured as needed.

[0056] In this embodiment, the power grid dispatch response module 100 is the "physical translation layer" of power grid control commands, which directly realizes fast and reliable command transmission through electrical signals.

[0057] In some embodiments, the power grid dispatch response module 100 further includes a first resistor and at least one second controlled switch; one end of each second controlled switch is connected to the working power supply through the first resistor; the other end of each second controlled switch is connected to a first controlled switch via a shared acquisition port. The second controlled switches and first controlled switches sharing the same acquisition port form a group. Under the action of different control commands from the power grid control equipment, the switching state of at least one switch in the group of controlled switches is changed to output the corresponding dispatch command.

[0058] For details, see Figure 2 The second controlled switches (S1, S2, S3, S4) are independent of each other and can output different scheduling commands respectively. The combined control of a set of second controlled switches and the first controlled switch can make the corresponding output port have at least three states. For example, state 1: both are open (open is the default state); state 2: the first controlled switch is closed and the second controlled switch is open; state 3: the first controlled switch is open and the second controlled switch is closed.

[0059] In this embodiment, the second controlled switch increases the instruction capacity by using resistor voltage division and port multiplexing.

[0060] In some embodiments, the first controlled switch and the second controlled switch respectively comprise an analog switch and a digital switch. The analog switch is used to respond to and transmit power regulation commands in the scheduling instructions. The digital switch is used to respond to and transmit switching commands in the scheduling instructions.

[0061] Specifically, the power adjustment commands include commands such as increasing output power by 20% and decreasing output power by 10%. The switching commands include commands such as controlling the output switching of the photovoltaic panel 320 and the energy storage battery 330.

[0062] In some of these embodiments, see Figure 3 The energy gateway 200 includes: a digital signal acquisition module 210, an analog signal acquisition module 220, an RS485 communication module 230, and a control module 240.

[0063] The digital signal acquisition module 210 is connected to the digital switch and is used to acquire power adjustment commands; the analog signal acquisition module 220 is connected to the analog switch and is used to acquire switching commands.

[0064] The control module 240 is connected to the digital signal acquisition module 210 and the analog signal acquisition module 220 respectively, and is used for protocol encapsulation. Through protocol encapsulation, power adjustment commands and / or switching commands are uniformly converted into standard Modbus frames.

[0065] The RS485 communication module 230, connected to the control module 240 and the distributed energy source 300, is used to transmit encapsulated power regulation commands and / or switching commands to the distributed energy source 300. Specifically, the RS485 communication module 230 is connected to the inverter 310 in the distributed energy source 300. The energy gateway 200 connects multiple inverters 310 via RS485 to centrally issue power regulation and other commands to meet grid dispatch requirements. RS485 uses twisted-pair balanced transmission (A / B lines) to effectively suppress common-mode noise and adapt to the strong electromagnetic interference environment caused by the high-power switching of the inverter 310.

[0066] In some of these embodiments, see Figure 4 The distributed energy source 300 includes an inverter 310, a photovoltaic panel 320, and an energy storage battery 330 connected to the inverter 310. The photovoltaic panel 320 converts solar energy into electrical energy. The energy storage battery 330 stores or releases the electrical energy provided by the photovoltaic panel 320. The inverter 310 is also connected to an energy gateway 200 and a low-voltage power grid to receive dispatch commands. Under these commands, the energy storage battery 330 operates in charging or discharging mode, thereby enabling changes in the power direction and magnitude of the energy storage battery 330.

[0067] Specifically, during the adjustment process, if power reduction is involved, the inverter 310 will prioritize transferring the output power to the energy storage battery 330; if power increase is involved, the power of the energy storage unit will be dispatched to meet the requirements if the power of the photovoltaic panel 320 is insufficient.

[0068] In some embodiments, the distributed energy system for small-scale industrial and commercial use also includes an adjustable load. The adjustable load, connected to the energy gateway 200, is used to consume excess electrical energy generated by the photovoltaic panels 320 under the control of the energy gateway 200.

[0069] For details, see Figure 5 Adjustable loads include, but are not limited to, charging piles and heat pumps. The energy gateway 200 can connect to and from the adjustable loads via a wireless network (see [link]). Figure 5 (middle dashed line), or can be connected to an adjustable load via a wired communication cable (see...) Figure 5 (Solid line with arrow in the middle). Adjustable loads can work with energy gateways 200 to achieve distributed peak shaving and valley filling functions. That is, by increasing the power of adjustable loads, photovoltaic backflow into the grid is prevented; by reducing the power of adjustable loads, excess electrical energy is stored in energy storage batteries 330 to meet the electricity demand during periods of higher electricity prices.

[0070] In some of these embodiments, see Figure 5 The energy gateway 200 is communicatively connected to the inverter 310, the energy storage battery 330, and the adjustable load to receive real-time operating data from the inverter 310, the energy storage battery 330, and the adjustable load.

[0071] Specifically, the communication connection method can be a wireless communication connection, including but not limited to WiFi, Bluetooth, etc.

[0072] In some of these embodiments, see Figure 5 The distributed energy system for small-scale industrial and commercial applications also includes a router and a cloud platform. The router, connected to the energy gateway 200 via a network, is used for data forwarding; the cloud platform, connected to the router, is used to receive and record dispatch instructions and real-time operating data of the inverter 310, energy storage battery 330, and adjustable load.

[0073] Specifically, distributed energy systems for small-scale industrial and commercial applications also include terminal control electronic devices, and the terminal control electronic devices and cloud platforms can be used as channels for displaying information.

[0074] In some of these embodiments, see Figure 5 The distributed energy system for small-scale industrial and commercial applications also includes: electricity meters. The electricity meters are installed at the inlet of the user's circuit and connected to the energy gateway 200 to collect the power parameters of the user's circuit and send them to the energy gateway 200.

[0075] The present embodiment will be described below through preferred embodiments.

[0076] This preferred embodiment provides a distributed energy system for small-scale industrial and commercial use, see [link to previous document]. Figures 1 to 4The system includes: a power grid dispatch response module 100, an energy gateway 200, and a distributed energy source 300 connected in sequence.

[0077] The power grid dispatch response module 100 is also connected to external power grid control equipment to respond to control commands issued by the power grid control equipment and output dispatch commands corresponding to the control commands. The power grid dispatch response module 100 includes at least one first controlled switch. One end of each first controlled switch is connected to the working power supply; the other end of each first controlled switch is connected to the corresponding acquisition port of the energy gateway 200. The power grid dispatch response module 100 also includes a first resistor and at least one second controlled switch. One end of each second controlled switch is connected to the working power supply through the first resistor; the other end of each second controlled switch is connected to a first controlled switch via a shared acquisition port. Each second controlled switch and its corresponding first controlled switch change the switching state of at least one of them under the action of different control commands from the power grid control equipment to output the corresponding dispatch command. The first and second controlled switches respectively include analog switches and digital switches. The analog switches are used to respond to and transmit power adjustment commands in the dispatch commands. The digital switches are used to respond to and transmit switching commands in the dispatch commands.

[0078] The energy gateway 200 includes: a digital signal acquisition module 210, an analog signal acquisition module 220, an RS485 communication module 230, and a control module 240. The digital signal acquisition module 210 is connected to a digital switch and is used to acquire power regulation commands; the analog signal acquisition module 220 is connected to an analog switch and is used to acquire switching commands. The control module 240 is connected to both the digital signal acquisition module 210 and the analog signal acquisition module 220, and is used for protocol encapsulation. Through protocol encapsulation, power regulation commands and / or switching commands are uniformly converted into standard Modbus frames. The RS485 communication module 230 is connected to the control module 240 and the distributed energy source 300, and is used to transmit the encapsulated power regulation commands and / or switching commands to the distributed energy source 300.

[0079] The distributed energy source 300 is also connected to the low-voltage grid and is used to select the corresponding operating mode under dispatch commands to regulate the energy input to the low-voltage grid. Specifically, the distributed energy source 300 includes: an inverter 310, and photovoltaic panels 320 and energy storage batteries 330 connected to the inverter 310. The photovoltaic panels 320 are used to convert solar energy into electrical energy. The energy storage batteries 330 are used to store the electrical energy provided by the photovoltaic panels 320 or release electrical energy. The inverter 310 is also connected to the energy gateway 200 and the low-voltage grid to receive dispatch commands. Under the dispatch commands, the energy storage batteries 330 operate in charging mode or discharging mode. When the dispatch command indicates a power reduction, the energy storage batteries 330 operate in charging mode; when the dispatch command indicates a power increase, the energy storage batteries 330 operate in discharging mode, thereby regulating the energy input to the low-voltage grid.

[0080] In this preferred embodiment, scheduling instructions can be forwarded layer by layer through the communication module and energy gateway, enabling distributed reception of local power grid scheduling, flexibly adjusting the energy delivered to the power grid, and improving the quality and stability of power grid operation.

[0081] It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. All other embodiments derived by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0082] Obviously, the accompanying drawings are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar situations based on these drawings without any creative effort. Furthermore, it is understood that although the work done in this development process may be complex and lengthy, for those skilled in the art, certain design, manufacturing, or production modifications made based on the technical content disclosed in this application are merely conventional technical means and should not be considered as insufficient disclosure of this application.

[0083] The term "embodiment" in this application refers to a specific feature, structure, or characteristic described in connection with an embodiment that may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily imply the same embodiment, nor does it imply that it is mutually exclusive with or independent of other embodiments. It will be clearly or implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0084] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A distributed energy system for small and medium businesses, characterized by, include: The power grid dispatch response module, energy gateway, and distributed energy resources are connected in sequence. The power grid dispatch response module is also connected to an external power grid control device to respond to control commands issued by the power grid control device and output dispatch commands corresponding to the control commands. The energy gateway is used to transmit the dispatching instructions sent by the power grid dispatching response module to the distributed energy source; The distributed energy source is also connected to the low-voltage power grid and is used to select the corresponding working mode under the dispatch command in order to regulate the energy input to the low-voltage power grid.

2. The distributed energy system for small-scale industries as claimed in claim 1 wherein, The power grid dispatch response module includes at least one first controlled switch; One end of each of the first controlled switches is connected to the power supply. The other end of each of the first controlled switches is connected to the acquisition port corresponding to the energy gateway; Each of the first controlled switches changes its switch state under the action of different control commands from the power grid control equipment, so as to output the corresponding scheduling command.

3. The distributed energy system for small-scale commercial and industrial applications as claimed in claim 2 wherein, The power grid dispatch response module also includes a first resistor and at least one second controlled switch; One end of each of the second controlled switches is connected to the operating power supply through the first resistor; The other end of each of the second controlled switches is connected to one of the first controlled switches via a shared acquisition port; Each of the second controlled switches and the corresponding first controlled switches changes the switching state of at least one of them under the action of different control commands from the power grid control equipment, so as to output the corresponding scheduling command.

4. The distributed energy system for small-scale commercial and industrial applications as claimed in claim 3 wherein, The first controlled switch and the second controlled switch respectively include an analog switch and a digital switch; The analog switch is used to respond to and transmit the power adjustment command in the scheduling command; The digital switch is used to respond to and transmit the switching command in the scheduling instruction.

5. The distributed energy system for small-scale commercial and industrial applications as claimed in claim 4 wherein, The energy gateway includes: a digital signal acquisition module, an analog signal acquisition module, an RS485 communication module, and a control module; The digital signal acquisition module is connected to the digital switch and is used to acquire the power adjustment command; The analog signal acquisition module is connected to the analog switch and is used to acquire the switch command; The control module is connected to the digital signal acquisition module and the analog signal acquisition module, and is used for protocol encapsulation. The RS485 communication module is connected to the control module and the distributed energy source, and is used to transmit the protocol-encapsulated power regulation command and / or the switching command to the distributed energy source.

6. The distributed energy system for small business and commerce as claimed in claim 1 wherein, The distributed energy source includes: an inverter, and photovoltaic panels and energy storage batteries connected to the inverter; The photovoltaic panel is used to convert solar energy into electrical energy; The energy storage battery is used to store the electrical energy provided by the photovoltaic panel or to release electrical energy. The inverter is also connected to the energy gateway and the low-voltage grid, and is used to receive the dispatch command and control the energy storage battery to operate in charging mode or discharging mode under the dispatch command.

7. The distributed energy system for small-scale commercial and industrial applications as claimed in claim 6 wherein, The distributed energy system for small-scale industrial and commercial enterprises also includes: adjustable load; The adjustable load is connected to the energy gateway and is used to consume excess electrical energy generated by the photovoltaic panel under the control of the energy gateway.

8. The distributed energy system for small-scale commercial and industrial applications as claimed in claim 7 wherein, The energy gateway is communicatively connected to the inverter, the energy storage battery, and the adjustable load to receive real-time operating data from the inverter, the energy storage battery, and the adjustable load.

9. The distributed energy system for small-scale commercial and industrial applications as claimed in claim 8 wherein, The distributed energy system for small-scale industrial and commercial enterprises also includes: routers and cloud platforms; The router is connected to the energy gateway via a network and is used for data forwarding; The cloud platform is communicatively connected to the router and is used to receive and record the scheduling instructions as well as the real-time operating data of the inverter, the energy storage battery, and the adjustable load.

10. The distributed energy system for small-scale commercial and industrial applications as claimed in claim 1 wherein, The distributed energy system for small-scale industrial and commercial enterprises also includes: electricity meters; The electricity meter is installed at the inlet of the user circuit and connected to the energy gateway. It is used to collect the power parameters of the user circuit and send them to the energy gateway.

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