Household energy management system

Abstract

The utility model provides a household energy management system, which relates to the technical field of new energy, and comprises a data acquisition module, a control module, a detection acquisition module, a distributed energy module, a remote module, a WIFI (Wireless Fidelity) communication module, a mobile phone APP / web end application and an HMI (Human Machine Interface) module, acquisition, storage and a centralized controller are both realized locally, the problems of system data loss and control failure caused by network problems and communication problems can be avoided, meanwhile, centralized design of an acquirer and the controller is realized on hardware, field installation and debugging are facilitated, a wifi plug-in interface is arranged, use and later-stage installation of a wifi module are facilitated, and the cost is reduced. The problems that a current mainstream energy control system basically adopts a local acquisition and cloud side control mode, the requirement for the network environment of system installation is high, and the requirement is difficult to meet for weak power grid areas and areas without power grids in Asian areas are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, and in particular to a household energy management system. Background Art

[0002] The energy control system based on local centralized control is designed to achieve centralized control of distributed energy sources such as photovoltaic storage hybrid inverters, photovoltaic grid-connected inverters, and diesel generators through local collection and local control, thereby achieving efficient energy scheduling.

[0003] Currently, mainstream household solar-plus-storage systems typically utilize integrated solar-plus-storage units. However, the installed capacity of these units is often limited by the capacity of the units themselves, hindering the full value of these systems. Users in both Southeast Asia and Central Asia are increasingly demanding higher levels of photovoltaic power generation, often requiring additional photovoltaic inverters to meet their electricity needs. Consequently, the energy control systems built into these integrated solar-plus-storage units are unable to adequately manage the energy scheduling of the entire solar-plus-storage system.

[0004] Currently, integrated energy scheduling for photovoltaic inverters and energy storage inverters is primarily used on the grid side and in large-scale industrial and commercial projects. There are no corresponding energy control systems for household systems. Furthermore, mainstream energy control systems typically utilize local data collection and cloud-edge control, which places high demands on the network environment for system installation. This makes it difficult to meet these requirements in areas with weak or no grid access in Asia. Utility Model Content

[0005] The embodiments of the present disclosure relate to a home energy management system. The energy control system solves the problem of high environmental requirements of existing energy control systems by locally collecting and controlling the equipment in the system. By locally collecting and storing data, problems such as data loss caused by network instability and alarm failure are avoided.

[0006] In a first aspect of the present disclosure, a home energy management system is provided, which specifically includes: a data acquisition module, a control module, a detection and acquisition module, a distributed energy module, a remote module, a WIFI communication module, a mobile phone APP / web application and an HMI module. The data acquisition module is composed of a hardware device through an integrated design and an external WIFI communication module; the control module includes a fault and alarm function, a data analysis function and an HMI function; the detection and acquisition module is mainly composed of acquisition equipment such as a temperature and humidity sensor and a CT; the distributed energy module includes various distributed energy sources such as a photovoltaic system, an energy storage system, a fan system and a diesel power generation system; the remote module forwards the data of the control module to a cloud server through a plug-in WIFI module, and displays the data through a mobile phone APP / web application; the HMI module includes a main interface, a system setting interface, a device interface, an alarm interface, a power on / off interface and a data interface.

[0007] In at least some embodiments, the hardware device includes a data collector and an industrial control all-in-one computer, and the data collector is located inside the industrial control all-in-one computer 1. An industrial control display screen is provided on the top of the industrial control all-in-one computer 1. Two DB9 interfaces are provided at one end of the industrial control all-in-one computer, and a LAN interface is provided on the right side of the DB9 interface, and four RS485 interfaces are provided on the right side of the LAN interface.

[0008] In at least some embodiments, the DB9 interface on the left is used for the use of a WIFI module, and the DB9 interface on the right is used for the expansion use of a data acquisition module.

[0009] In at least some embodiments, the LAN interface is a wireless network interface used for Ethernet communication or connecting to a server.

[0010] In at least some embodiments, the RS485 interface is a communication interface for accessing an energy control system, and the RS485 interface is used to communicate with the BMS of photovoltaic inverters, energy storage inverters, energy storage batteries, and diesel generator equipment.

[0011] The utility model provides a home energy management system, which has the following beneficial effects:

[0012] This system realizes the overall energy dispatch of the photovoltaic storage system through centralized control of photovoltaic inverters and energy storage inverters, achieves optimal utilization of electric energy and maximizes benefits.

[0013] In addition, the acquisition storage and centralized controller are all implemented locally, which can avoid system data loss and control failure caused by network problems and communication problems. At the same time, the centralized design of the collector and controller is realized in hardware, which is convenient for on-site installation and debugging. It is also equipped with a wifi plug-in interface to facilitate the use and later installation of wifi modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0015] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0016] In the attached figure:

[0017] Figure 1 Shows a simplified diagram of the overall system overview of this application;

[0018] Figure 2 Shows the topology diagram of the home energy management system of this application;

[0019] Figure 3 The figure shows a front view structural diagram of the industrial control all-in-one machine of the present application;

[0020] Figure 4 The figure shows a schematic diagram of the right-side structural perspective of the industrial control all-in-one machine of the present application;

[0021] Figure 5 A schematic diagram of the structure of the industrial control all-in-one machine of the present application is shown from a top view.

[0022] List of reference numerals:

[0023] 1. Industrial control all-in-one computer; 2. Industrial control display screen; 3. DB9 interface; 4. LAN interface; 5. RS485 interface. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figures 1 to 5 :

[0026] The utility model proposes a home energy management system, including: a data acquisition module, a control module, a detection and acquisition module, a distributed energy module, a remote module, a WIFI communication module, a mobile phone APP / web application and an HMI module. The data acquisition module is composed of a hardware device 1 through an integrated design and an external WIFI communication module; the control module includes a fault and alarm function, a data analysis function and an HMI function; the detection and acquisition module is mainly composed of acquisition equipment such as a temperature and humidity sensor and a CT; the distributed energy module includes various distributed energy sources such as a photovoltaic system, an energy storage system, a fan system and a diesel power generation system; the remote module forwards the data of the control module to a cloud server through a plug-in WIFI module, and displays the data through a mobile phone APP / web application; the HMI module includes a main interface, a system setting interface, a device interface, an alarm interface, a power on / off interface and a data interface.

[0027] In the disclosed embodiment, the control module: 1. Fault and Alarm Function: Utilizing data acquisition and communication equipment, the system detects abnormal conditions such as overcurrent, overload, short circuit, leakage, and overheating, and notifies operations engineers and users via alarms. 2. Data Analysis Function: Utilizing smart meters (CTs), inverters, and other devices, the module reads household electricity consumption data, including photovoltaic system power generation and revenue, energy storage system charge and discharge, grid-connected power, grid-connected revenue, off-grid power, charging power and charging capacity of new energy charging stations, load power consumption, and more. It also records system equipment information, operating days, and electricity revenue and price revenue under various operating strategies. It also generates daily, monthly, and annual reports, enabling users to understand household electricity usage in real time. 3. HMI Function: The module primarily graphically displays data received by the system, visually displaying system operation status through topology diagrams and data tables. The HMI control interface consists of six sections: the main interface, device interface, system policy interface, alarm interface, power on / off interface, and data interface. The main interface displays system device topology and operating status, overall energy flow, system operating strategies, and power analysis. The device interface contains detailed data for each device in the system. This includes battery SOC, SOH, voltage, current, inverter operating mode (V / F, P / Q), voltage, frequency, and current. System strategies include power sales mode, backup mode, self-generation and self-consumption mode, peak shaving and valley filling mode, and custom settings. The system power on / off interface primarily includes two buttons: Start and Stop, enabling one-touch system startup and shutdown to ensure the proper operation of all devices. The data interface contains daily system operating data, including power generation, power sales, and electricity bills. It also supports data export for easy operation and maintenance. The home energy management system consists of five main components: a distributed energy module, a monitoring and acquisition module, a communication module, a control module, and a remote module. The distributed energy module includes energy devices such as the photovoltaic system (PV inverters, PV panels), the energy storage system (energy storage batteries, energy storage PCS), and the diesel generator system. The monitoring and acquisition module includes devices such as smart meters and temperature and humidity sensors. The communication module includes multiple RS485 and CAN communication interfaces for information exchange between modules. Control module: used to receive and send data from each module in the system and control its operation. It includes functions such as system operation strategy control, energy scheduling, data reporting, data storage, and alarm prompts.

[0028] Detection and acquisition module: This module is mainly composed of temperature and humidity sensors, CT and other acquisition equipment, which are used to collect the day's light radiation, temperature and humidity, wind speed and other conditions in real time.

[0029] Distributed energy modules: These modules primarily include photovoltaic systems, energy storage systems, wind turbine systems, diesel generator systems, and other distributed energy sources, which are connected to household electricity through AC coupling. These modules can be hot-swapped to connect or disconnect distributed systems.

[0030] Remote module: Through the plug-in WIFI module, the data of the local control module is forwarded to the cloud server, and the system operation status and historical operation data are displayed to users and operation and maintenance personnel through the web and mobile APP.

[0031] In the disclosed embodiment, the operating strategies are as follows: 1. Self-generation and self-use mode: The real-time power of the grid connection point and the on-grid power and off-grid power are monitored in real time through a CT bidirectional meter. The data is transmitted to the control module through RS485 communication, and the on-grid power is defined as positive and the off-grid power is defined as negative. By setting the real-time power of the grid connection point to ≤0kw, when the power of the grid connection point approaches 0, the output of distributed energy is reduced in advance to prevent energy backflow. 2. On-grid and off-grid mode: By installing an STS module at the grid connection point, the grid parameters are detected in real time through the CT and sent back to the control module. When a power outage is detected or the grid does not meet the specified parameters, the STS module is controlled to disconnect the mains power and the energy storage inverter is converted from P / Q mode to V / F mode to achieve automatic on-grid and off-grid switching of the system. 3. Peak-valley arbitrage mode: By regularly setting the charge and discharge power of the energy storage system, when the grid electricity price is low, the energy storage system prioritizes the charging strategy, and when the electricity price is high, the discharge strategy is prioritized. This reduces the purchase of high-priced electricity from the grid. This reduces electricity bills. 4. Backup power mode: The distributed energy system will only provide power support to the backup power load, and the power transmitted back to the grid is detected by the CT of the inverter to control the charging power to the normal load and energy storage battery.

[0032] In the disclosed embodiment, the HMI interface includes the following: 1. Main Interface: Primarily composed of a system topology diagram and basic system parameters. The System Topology Diagram displays the connection between the system and household electricity consumption, system device model parameters, and the voltage, current, and power of each device. Basic System Parameters: Include information such as time, weather information, system operating hours, system fault information, operating strategy, daily online and offline power, daily photovoltaic power generation, daily energy storage charge and discharge, and daily electricity bills. 2. System Settings Interface: Consists of two main sections: system settings and system operation strategy settings. During initial system installation and commissioning, this interface sets the communication protocol and communication method between each device and the controller. After the system is operating normally, this interface selects the system operation strategy and sets parameters. 3. Device Interface: Includes specific parameters for each device: Energy storage battery: SOC, SOH, battery level, current, and temperature. PV inverter: DC voltage, DC current, AC voltage, AC current, and AC power. Energy storage inverter: Operating mode, voltage, current, and power. Grid connection point CT: Grid voltage, frequency, grid connection power, and current. Each device's operating status and alarm status are displayed. 4. Alarm interface: Contains all alarm information and alarm status, and records historical alarm information, occurrence time, and resolution time. 5. Power on / off interface: Mainly composed of the system's power on and power off buttons, which can start or shut down all devices in the system with one click. It is convenient for installation, operation and maintenance, equipment replacement, and other operations. 6. Data interface: Contains various operating data and equipment data of the system. Energy storage battery data: daily power generation, charge and discharge times, and historical charge and discharge power. Energy storage inverter data: daily charge capacity, daily discharge times, and cumulative charge and discharge capacity. Photovoltaic inverter data: daily power generation and historical power generation. System operation data: real-time data, historical data, data export, report generation, energy flow data, fault alarm records, and other information.

[0033] In the embodiment of the present disclosure, the hardware device 1 includes a data collector and an industrial control all-in-one computer 1, and the data collector is located inside the industrial control all-in-one computer 1. An industrial control display screen 2 is provided on the top of the industrial control all-in-one computer 1. Two DB9 interfaces 3 are provided at one end of the industrial control all-in-one computer 1, and a LAN interface 4 is provided to the right of the DB9 interface 3, and four RS485 interfaces 5 are provided to the right of the LAN interface 4.

[0034] The DB9 interface 3 on the left is used for the WIFI module, and the DB9 interface 3 on the right is used for the expansion of the data acquisition module;

[0035] LAN interface 4 is a wireless network interface, used for Ethernet communication or connecting to a server;

[0036] RS485 interface 5 is the communication interface for accessing the energy control system. RS485 interface 5 is used to communicate with the BMS of photovoltaic inverters, energy storage inverters, energy storage batteries and diesel generator equipment. The corresponding communication protocol of each device is selected through the device interface, and the corresponding system operation strategy is set in the system strategy interface. Among them, the data acquisition module is used to monitor environmental data and circuit data. The distributed energy module is various energy systems. The intelligent management module includes a fault detection module to detect various fault data in the household circuit. The energy analysis module monitors the equipment data and power data in real time, comprehensively grasps the energy output and consumption, and supports report management, providing data support for users to grasp the household electricity usage and optimize the energy usage structure.

[0037] The working principle of this embodiment is as follows: During use, the energy storage battery, energy storage inverter, photovoltaic inverter, and diesel generator equipment are connected to the communication interface of the energy control system via RS485. The corresponding communication protocol of each device is selected through the device interface. The corresponding system operation strategy is set in the system strategy interface. Then, the system is started. The energy control system sends a startup instruction to all devices to start all devices in the system. Among them, the data acquisition module is used to monitor environmental data and circuit data. The distributed energy module is for various energy systems. The intelligent management module includes a fault detection module to detect various fault data in the household circuit. The energy analysis module monitors device data and power data in real time to fully understand energy output and consumption. It also supports report management and provides data support for users to understand household electricity usage and optimize energy usage structure. The HMI module intuitively displays the entire system through graphics, topology diagrams, data tables, etc.

[0038] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. Home energy management system, characterized in that, include: The data acquisition module, control module, detection and acquisition module, distributed energy module, remote module, WIFI communication module, mobile phone APP / web application and HMI module are composed of hardware devices through integrated design and external WIFI communication module; the control module includes fault and alarm functions, data analysis functions and HMI functions; the detection and acquisition module is mainly composed of temperature and humidity sensors and CT acquisition equipment; the distributed energy module includes distributed energy of photovoltaic system, energy storage system, fan system and diesel power generation system; the remote module forwards the data of the control module to the cloud server through the plug-in WIFI module, and displays the data through the mobile phone APP / web application; the HMI module includes the main interface, system setting interface, device interface, alarm interface, power on / off interface and data interface.

2. The home energy management system according to claim 1, characterized in that: The hardware device comprises a data collector and an industrial control all-in-one machine (1), wherein the data collector is located inside the industrial control all-in-one machine (1), an industrial control display screen (2) is provided on the top of the industrial control all-in-one machine (1), two DB9 interfaces (3) are provided at one end of the industrial control all-in-one machine (1), a LAN interface (4) is provided on the right side of the DB9 interface (3), and four RS485 interfaces (5) are provided on the right side of the LAN interface (4).

3. The home energy management system according to claim 2, characterized in that: The DB9 interface (3) on the left is used for the use of the WIFI module, and the DB9 interface (3) on the right is used for the expansion use of the data acquisition module.

4. The home energy management system according to claim 3, characterized in that: The LAN interface (4) is a wireless network interface used for Ethernet communication or connecting to a server.

5. The home energy management system according to claim 4, characterized in that: The RS485 interface (5) is a communication interface for accessing the energy control system. The RS485 interface (5) is used to communicate with the BMS of the photovoltaic inverter, energy storage inverter, energy storage battery and diesel generator equipment.

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