Edge gateway machine of electric power system

Abstract

The invention relates to an edge gateway machine of a power system, and belongs to the technical field of Internet of Things. The device comprises a central processing unit, an uplink communication unit, a downlink communication unit and an AC / DC sampling module, the central processing unit is realized by an ARM and an FPGA, an embedded linux operating system is adopted, and the AC / DC sampling module acquires electric energy data of a power signal connected with the edge gateway machine and transmits the electric energy data to the central processing unit; and through the uplink communication unit and the downlink communication unit, each power device is downwards connected, local power grid operation data is collected and transmitted to the cloud, the cloud is upwards connected, and a cloud control instruction is received and issued to each power device. On the basis of an Internet of Things architecture, local power grid operation data are collected and uploaded to the cloud, instruction operation such as a power grid operation mode is achieved, dispatching and power grid safe operation are supported, intelligentization and automation of power grid operation regulation and control are achieved, a power grid system operates efficiently and safely, and powerful support is provided for power grid digital construction.

Description

Technical Field

[0001] The invention relates to an edge gateway of an electric power system, belonging to the technical field of Internet of Things. Background Art

[0002] An edge gateway is a network device used to connect IoT devices and cloud applications. It is a gateway deployed at the edge of the network. It connects the physical and digital worlds through network connection, protocol conversion and other functions, and provides lightweight connection management, real-time data analysis and application management functions. The power system is an electric energy production and consumption system composed of power plants, transmission and transformation lines, power supply and distribution, and power consumption. The power system has corresponding information and control systems at various links and levels to measure, regulate, control, protect, communicate and dispatch the production process of electric energy to ensure that users obtain safe and high-quality electric energy.

[0003] At present, the information and control of the power system are composed of various detection equipment, communication equipment, safety protection equipment, automatic control devices, monitoring automation, and dispatching automation. The structure of the power system should ensure the reasonable coordination of electricity production and consumption based on advanced technical equipment and high economic benefits. Summary of the invention

[0004] The purpose of the present invention is to provide an edge gateway of an electric power system to solve the problems of high control cost and poor applicability of the current electric power management system.

[0005] In order to solve the above technical problems, the present invention provides an edge gateway of a power system, comprising a central processing unit, an uplink communication unit and a downlink communication unit, and also comprising an AC / DC sampling module, wherein the AC / DC sampling module is connected to the central processing unit and is used to collect power signals connected to the edge gateway, and transmit the collected power signals to the central processing unit;

[0006] The central processing unit is used to communicate with the cloud through the uplink communication unit, upload data and receive cloud control instructions; it is used to communicate with the power equipment through the downlink communication unit, collect information and issue control instructions.

[0007] The edge gateway of the power system of the present invention includes a central processing unit, an uplink communication unit, a downlink communication unit and an AC / DC sampling module. The AC / DC sampling module collects the electric energy data of the power signal connected to the edge gateway and transmits it to the central processing unit. The downlink communication unit is connected to each power device downward to collect the local power grid operation data and transmit it to the cloud. The uplink communication unit is connected to the cloud upward to receive the cloud control command and send it to each power device. The present invention is based on the Internet of Things architecture, collects the local power grid operation data and the electric energy data of the power signal and sends them to the cloud, and based on the control command received from the cloud, realizes the control of the power grid operation mode, supports scheduling and safe operation of the power grid, realizes the intelligent and automated operation and regulation of the power grid, makes the power grid system operate efficiently and safely, and provides strong support for the digital construction of the power grid.

[0008] Furthermore, the edge gateway of the power system also includes a GPS module, which is connected to the central processor and is used to collect location information of the local power grid.

[0009] The GPS module enables the cloud to obtain the real-time location information of the edge gateway.

[0010] Furthermore, the edge gateway of the power system also includes an analog-to-digital conversion module, the input end of which is connected to the AC / DC sampling module, and the output end is connected to the central processing unit, for converting the collected analog signal into a digital signal and transmitting it to the central processing unit.

[0011] The central processing unit can only process digital signals. The analog-to-digital conversion module converts the collected analog quantities into digital signals for transmission, which is beneficial to the central processing unit's processing of digital signals.

[0012] Furthermore, the uplink communication unit includes at least two of a 4G module, a 5G module, an Ethernet module, an HPLC module, a micro-power module, and a dual-mode module.

[0013] Furthermore, the downlink communication unit includes at least two of a Bluetooth module, a Zigbee module, a LoRa module, an Ethernet module, an RS485 / RS232 module, a WiFi module, and an RF module.

[0014] Through multiple means of uplink and downlink communications, access to large amounts of diverse power and IoT data is achieved, and local real-time data analysis and business processing are completed.

[0015] Furthermore, the central processing unit adopts ARM and FPGA.

[0016] Furthermore, the central processing unit is containerized using Docker.

[0017] The central processing unit is implemented by ARM and FPGA, using an embedded Linux operating system, supporting data collection and data calculation, developing apps that meet application requirements and flexibly deploying them through containers, reducing the amount of information transmitted to the cloud and alleviating the pressure of data on the cloud.

[0018] Furthermore, a data subscription and publishing mode is adopted to receive data subscription commands issued by the cloud, automatically complete local configuration and publish data according to the subscription command requirements.

[0019] The cloud-edge system can realize the intelligent and automated operation and regulation of the power grid by actively subscribing to and calling for the required data information, thereby enabling the power grid system to operate efficiently and safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a system block diagram of an edge gateway machine of a power system of the present invention;

[0021] Figure 2 is a system architecture diagram of an edge gateway machine of the power system of the present invention;

[0022] Figure 3 is a data flow diagram of an edge gateway machine of the power system of the present invention;

[0023] Figure 4 It is an overall application structure diagram of the edge gateway machine of the power system of the present invention. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] Embodiment of edge gateway for power system

[0026] The present invention is composed of a central processor, an uplink communication unit, a downlink communication unit and an AC / DC sampling module; the central processor is used for interaction between the cloud and the power equipment; the uplink communication unit and the downlink communication unit are used to communicate with the power equipment and the cloud application, connect to the cloud upward through the uplink communication unit, receive cloud control instructions and send them to each power equipment, connect to each power equipment downward through the downlink communication unit, collect local power grid operation data and transmit it to the cloud; it also includes a GPS module and an analog-to-digital conversion module, the GPS module is used to collect the location information of the local power grid; the analog-to-digital conversion module is used to convert the collected analog signal into data information and transmit it to the central processor. The system block diagram of the device is as follows Figure 1 As shown, the specific description is given below.

[0027] The central processing unit is implemented by ARM and FPGA, using an embedded Linux operating system. Edge convergence computing and application layer communication protocols are used to develop app applications according to demand, and Docker is used for containerized layout. It supports configuration and modification of container resources, local and remote upgrades of containers, communication and data interaction between containers, local and remote start, stop, installation and uninstallation of containers, and query of container information. The central processing unit supports logical operations and arithmetic operations on locally collected data, supports time scale and quality calculation processing, communication interruption quality processing functions, supports information fusion, and supports local application analysis and master-substation interaction functions. The system architecture diagram of the edge gateway machine is shown below: Figure 2 shown.

[0028] The uplink communication unit and the downlink communication unit are used to communicate with power equipment and cloud applications. The uplink communication transmits data, and the downlink communication issues instructions. The uplink communication unit includes at least two of the 4G module, 5G module, Ethernet module, HPLC module, micro power module, and dual-mode module; the downlink communication unit includes at least two of the Bluetooth module, Zigbee module, LoRa module, Ethernet module, RS485 / RS232 module, WiFi module, and RF module.

[0029] The AC / DC sampling module has basic AC analog measurement functions, including three-phase voltage, three-phase current, phase angle, phase active and reactive power, three-phase active and reactive power, power factor, frequency, etc., as well as electric energy meter data collection and monitoring. The local power grid operation data is collected through the AC / DC sampling module, and then converted through the analog-to-digital conversion module, and the converted data is uploaded to the central processor.

[0030] The data flow between the edge gateway and the cloud includes local power grid information, device management data, and application interaction data. The power grid operation information includes the transmission of power grid operation status data and the acceptance of power grid operation mode switching, frequency regulation / peak regulation and other instructions; the device management data should include the interaction data generated by the edge gateway version control, program upgrade, function start and stop and other functions; the application interaction data should include the interaction data generated by the cloud-edge collaboration between the application deployed on the edge gateway and the edge cluster.

[0031] The data flow from the edge gateway to the downstream includes information collection and control command issuance. Information collection should include obtaining data such as the power grid operation status and device operation status from smart devices; control commands should include switching the power grid operation mode, frequency regulation / peak regulation, and other control commands to smart devices. The system data flow diagram is shown in the figure below. Figure 3 shown.

[0032] The edge gateway has a plug-and-play function, can discover various terminals or systems downstream of the access device and communicate with them; can accept the communication connection of the edge cluster as a server, actively register with the edge cluster after establishing the connection, and can provide local model files for the edge cluster to call; should have data subscription and publishing functions, can accept data subscription commands issued by the edge cluster, automatically complete local configuration, and publish data according to subscription command requirements; support remote download, upgrade, and management of application software, realize plug-and-play of a single application software, and remote deployment of a single application software does not affect the operation of other unrelated application software. The overall application structure of the edge gateway is as follows: Figure 4 As shown, the downstream terminals and systems of the access equipment include power monitoring systems, intelligent devices, station control layer equipment, switchgear, direct procurement equipment, etc.

Claims

1. An edge gateway of a power system, comprising a central processing unit, an uplink communication unit and a downlink communication unit, characterized in that: It also includes an AC / DC sampling module, which is connected to the central processor and is used to collect power data of the power signal connected to the edge gateway, and transmit the collected power data to the central processor; The central processing unit is used to communicate with the cloud through the uplink communication unit, upload the collected power data and the acquired power grid operation data to the cloud, and receive the control instructions issued by the cloud; it is used to communicate with the power equipment through the downlink communication unit, collect data information on the power grid operation status and the power equipment operation status, and issue the received control instructions to each power equipment.

2. The edge gateway of the power system according to claim 1, characterized in that: It also includes a GPS module, which is connected to the central processor and is used to collect location information of the local power grid.

3. The edge gateway of the power system according to claim 1, characterized in that: It also includes an analog-to-digital conversion module, the input end of which is connected to the AC / DC sampling module, and the output end of which is connected to the central processing unit, for converting the collected analog signal into a digital signal and transmitting it to the central processing unit.

4. The edge gateway of the power system according to any one of claims 1 to 3, characterized in that: The uplink communication unit includes at least two of a 4G module, a 5G module, an Ethernet module, an HPLC module, a micro-power module, and a dual-mode module.

5. The edge gateway of the power system according to any one of claims 1 to 3, characterized in that: The downlink communication unit includes at least two of a Bluetooth module, a Zigbee module, a LoRa module, an Ethernet module, an RS485 / RS232 module, a WiFi module, and an RF module.

6. The edge gateway of the power system according to claim 1, characterized in that: The central processing unit adopts ARM and FPGA.

7. The edge gateway of the power system according to claim 1, characterized in that: The central processing unit is containerized using Docker.

8. The edge gateway of the power system according to claim 1, characterized in that: It adopts the data subscription and publishing mode, receives data subscription commands issued by the cloud, automatically completes local configuration and publishes data according to the subscription command requirements.

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