CN215956553U - Edge gateway device for virtual power plant - Google Patents
Edge gateway device for virtual power plant Download PDFInfo
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- CN215956553U CN215956553U CN202122238304.XU CN202122238304U CN215956553U CN 215956553 U CN215956553 U CN 215956553U CN 202122238304 U CN202122238304 U CN 202122238304U CN 215956553 U CN215956553 U CN 215956553U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model relates to an edge gateway device facing a virtual power plant, wherein N load devices, M energy storage devices and L distributed energy devices are accessed to a virtual power plant control center through the edge gateway device, the edge gateway device is characterized by comprising a main control unit based on an ARM Cortex-A8 core processor, the main control unit is accessed to the virtual power plant control center and a user side energy management system through a gigabit Ethernet unit and a 4G communication chip SIM7600CE, and the user side energy management system is accessed to the virtual power plant control center. The device provided by the utility model is used for establishing bidirectional information connection between the virtual power plant control center and each object in the area, and is provided with various local communication interfaces and remote communication interfaces. The utility model has a plurality of communication modes, supports a plurality of communication processing protocols and provides a reliable control mode.
Description
Technical Field
The utility model relates to an edge gateway device facing a virtual power plant.
Background
The virtual power plant is provided for integrating various distributed energy sources, under the premise of not changing the grid-connected mode of each distributed energy source, various distributed energy sources and electric equipment are aggregated through advanced control, metering, communication and other technologies, and a plurality of distributed energy sources are constructed through higher-level software to coordinate and optimize operation, so that the virtual power plant is used as a power supply coordination management system for a special power plant to participate in the operation of an electric power market and a power grid, and auxiliary services such as peak regulation, frequency modulation, emergency control and the like are provided.
The virtual power plant resource access is an important link for the virtual power plant to perform energy management, data acquisition and monitoring and communicate with a power system dispatching center. However, in the resource access interacting with the virtual power plant, because the existing virtual power plant resources are distributed dispersedly, the types are also complex, the quantity is large, and the protocols are diverse, an open and reliable edge side gateway device needs to be established, so that the bidirectional fusion of data transmission and information processing of the virtual power plant resources is realized, and the enrichment of data acquisition of the virtual power plant, the diversification of communication modes and the safety of implementation control are met.
Disclosure of Invention
The purpose of the utility model is: an edge gateway device suitable for use in a virtual power plant is provided.
In order to achieve the purpose, the technical scheme of the utility model provides an edge gateway device facing a virtual power plant, wherein N load devices, M energy storage devices and L distributed energy devices are connected to a virtual power plant control center through the edge gateway device, N is more than or equal to 1, M is more than or equal to 1, and L is more than or equal to 1;
the data interaction end of the main control unit is connected with an RS485 interface, a CAN interface, an Ethernet interface and a digital I/O interface; the method comprises the steps that N intelligent metering devices I collect current and voltage signals of N load devices, N is larger than or equal to 0 and smaller than or equal to N, M intelligent metering devices II collect current and voltage signals of M energy storage devices, M is larger than or equal to 0 and smaller than or equal to M, L intelligent metering devices III collect current and voltage signals of L distributed energy source devices, L is larger than or equal to 0 and smaller than or equal to L, the intelligent metering devices I, the intelligent metering devices II or the intelligent metering devices III located at the local place are connected with a main control unit through RS485 interfaces, CAN interfaces or digital I/O interfaces, and the intelligent metering devices I, the intelligent metering devices II or the intelligent metering devices III located at the far end are in data connection with the main control unit through Ethernet interfaces; the current and voltage data acquisition ports of the local load devices in the rest N-N stations, the current and voltage data acquisition ports of the local energy storage devices in the M-M stations or the local current and voltage data acquisition ports in the L-L distributed energy devices are directly connected with the main control unit through an RS485 interface, a CAN interface or a digital I/O interface; the current and voltage data acquisition ports of the load equipment at the far end in the rest N-N stations, the current and voltage data acquisition ports of the energy storage equipment at the far end in the M-M stations or the current and voltage data acquisition ports at the far end in the L-L distributed energy equipment establish data connection with the main control unit through Ethernet interfaces; the main control unit is also connected with a local temperature and humidity sensor through an RS485 interface, a CAN interface or a digital I/O interface, the main control unit is connected with a remote temperature and humidity sensor through an Ethernet interface, and the total M temperature and humidity sensors are respectively used for acquiring temperature and humidity signals of M energy storage devices; the main control unit is connected with the control signal input end of the local load equipment, the energy storage equipment or the distributed energy equipment through an RS485 interface, a CAN interface or a digital quantity I/O interface, and establishes data connection with the control signal input end of the remote load equipment, the energy storage equipment or the distributed energy equipment through an Ethernet interface;
the power supply control signal output end of the main control unit is connected with the relay control unit, and the relay control unit is connected with the power supply ports of the N pieces of load equipment;
the human-computer interaction end of the main control unit is connected with the human-computer interaction unit;
and the 24V direct current power supply supplies power to the main control unit through the power supply unit.
Preferably, the main control unit is connected with an external random access memory and a FLASH memory, wherein the random access memory adopts 2 blocks of 128M DDR2 chips, and the FLASH memory adopts 256MB nand FLASH memory chips.
Preferably, the main control unit is further connected with an external solid state disk.
Preferably, the human-computer interaction unit comprises a status indicator light connected with the status output end of the main control unit and a switch key connected with the control signal input end of the main control unit.
The device provided by the utility model is used for establishing bidirectional information connection between a virtual power plant control center and each object in a region, and the local communication interface comprises an RS485 interface, a CAN interface and a digital I/O interface and is used for acquiring parameters such as real-time voltage, current and power of local electric equipment and information such as various currents, voltages and temperatures of energy storage equipment; the remote power plant control system is provided with a remote communication interface, comprises an Ethernet interface and a 4G communication interface, is used for acquiring parameters such as real-time voltage, current and power of remote electric equipment and information such as various currents, voltages and temperatures of energy storage equipment, sending data to a virtual power plant control center of a virtual power plant system, and receiving an adjusting instruction of the virtual power plant control center of the virtual power plant system; the received control instruction is used for realizing reliable control of the load equipment.
The utility model has the beneficial effects that:
(1) the utility model has a plurality of communication modes: RS485 interface, CAN interface, ethernet interface, digital quantity I/O interface and 4G communication module. Data acquisition, calculation and processing of local various types of equipment are realized through different interface units, local data interaction is realized, and data interaction is carried out on a remote energy management system and a remote virtual power plant system;
(2) the ARM Cortex-A8 core processor adopted by the utility model supports a plurality of communication processing protocols: support the conversion and analysis of DL/T1867 and 2018, namely, the power demand response information exchange specification and the MQTT message transmission protocol;
(3) providing a reliable control mode: the edge gateway device provided by the utility model judges whether the output line has a short circuit or open circuit fault by detecting the output electrical parameters controlled by the safety relay in a safety relay interface mode, thereby realizing the reliable control of the load equipment.
Drawings
FIG. 1 is a schematic diagram of a virtual power plant resource access method;
fig. 2 is a schematic diagram of the hardware structure of the device.
Detailed Description
The utility model will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
As shown in fig. 1, the virtual power plant resources may be accessed through a virtual power plant terminal, and a virtual power plant hardware terminal and a virtual power plant software terminal may be deployed as needed according to the actual situation of the client side. The virtual power plant hardware terminal, namely the electric side load, is connected with the edge gateway device to be directly connected into a virtual power plant system, and the virtual power plant software terminal, namely the user side energy management system, is connected with the edge gateway device provided by the utility model, and is indirectly integrated into the virtual power plant system after being connected into the energy management system. It should be noted that the virtual power plant system and the customer-side energy management system are established systems, which are well known to those skilled in the art and will not be discussed in detail herein.
The load equipment on the power utilization side and the energy equipment on the power generation side measure and read real-time data such as electric quantity, voltage, current, power utilization power, power factors and the like through various intelligent measuring instruments, temperature and humidity sensors, current and voltage sensors and the like by using an intelligent measuring technology, and the real-time data serve as information sources of the demand side of the virtual power plant. Therefore, a large amount of accurate information can be provided for operation, scheduling and planning of the power grid, and operating personnel can conveniently and accurately master and predict the operation state of the power grid.
In this embodiment, the load devices on the power utilization side include N load devices, and the energy devices on the power generation side include M energy storage devices and L distributed energy devices. The energy storage device may be regarded as a power-use-side load device when storing energy, and may be regarded as a power-generation-side energy device when supplying energy to the outside. The current and voltage signals of n load devices, m energy storage devices and l distributed energy devices can be respectively acquired by n intelligent metering devices I, m intelligent metering devices II and l intelligent metering devices III, and the current and voltage signals of the load devices, the energy storage devices and the distributed energy devices can also be realized by using self-contained voltage and current sensors. Temperature and humidity signals of the energy storage device are collected by the temperature and humidity sensor.
The virtual power plant system optimizes and controls the power utilization side load equipment and the power generation side energy equipment of the user side through the acquired various power utilization and power generation information and a coordination control technology by the edge gateway device provided by the utility model, the power utilization side load equipment executes power utilization regulation according to the regulation instruction, and the energy storage equipment in the power generation side energy equipment is charged or discharged according to the regulation instruction.
Fig. 2 shows the overall structure of an edge gateway device for a virtual power plant, which is provided by the utility model, and the edge gateway device comprises a power supply unit, a main control unit, an interface unit, a communication unit, a relay control unit and a human-computer interaction unit.
The power supply unit is responsible for converting the 24V direct current power supply into 3.3V and 5V and then supplying power to other hardware units.
The main control unit is a core control unit of the device, and in this embodiment, an ARM Cortex-A8 core processor, 720MHz dominant frequency, is adopted. The data storage of the main control unit adopts the modes of an externally expanded FLASH unit and an RAM unit and an externally added solid state disk. The FLASH unit adopts a nand FLASH memory chip of 256MB, and the RAM unit adopts a DDR2 chip of 2 blocks 128M. The data processing of the main control unit is used for realizing various protocol analysis and conversion.
The interface unit comprises an RS485 interface, a CAN interface, an Ethernet interface and a digital I/O interface. The main control unit collects parameters such as real-time voltage, current and power of local load equipment, energy storage equipment or distributed energy equipment through an RS485 interface, a CAN interface or a digital I/O interface and intelligent metering equipment, and collects temperature and humidity signals of the local energy storage equipment through a temperature and humidity sensor. The main control unit can also utilize the Ethernet interface to acquire parameters such as real-time voltage, current and power of load equipment, energy storage equipment or distributed energy equipment at the far end through the intelligent metering equipment, and acquire temperature and humidity signals of the energy storage equipment at the far end through the temperature and humidity sensor. The main control unit CAN also directly acquire parameters such as real-time voltage, current, power and the like of local load equipment, energy storage equipment or distributed energy equipment through an RS485 interface, a CAN interface or a digital I/O interface, or directly acquire parameters such as real-time voltage, current, power and the like of remote load equipment, energy storage equipment or distributed energy equipment through an Ethernet interface.
The interface unit is realized by an RS485 interface, a CAN interface, an Ethernet interface and a digital I/O interface, covers the communication mode of most intelligent metering instruments or sensors, and realizes the collection of field energy consumption data, energy storage data and running state data. The main control unit of the device and the storage function of the main control unit can process, calculate and store various collected data, and upload the data to a virtual power plant system or a user side energy management system according to a certain format through the communication unit and the data processing function of the main control unit. Meanwhile, the virtual power plant system sends optimization and control instructions according to various received data and by combining a coordination control technology, and safety control is carried out through an RS485 interface, a CAN interface, an Ethernet interface or a digital I/O interface of the interface unit and a relay control unit.
The communication unit includes an ethernet communication unit and a 4G communication unit. The Ethernet communication unit adopts gigabit Ethernet MAC carried by an ARM Cortex-A8 core processor to externally provide the Ethernet interface. The 4G communication unit employs a 4G communication unit SIM7600 CE. The main control unit sends data to the virtual power plant system through the Ethernet communication unit and receives an adjusting instruction of the virtual power plant system. Meanwhile, the main control unit is accessed to the energy management system of the user side through the 4G communication unit.
In order to realize the purposes of demand response control, operation monitoring and the like of the virtual power plant master station on the user power utilization equipment, the virtual power plant master station needs to communicate with the user main power utilization equipment and the power generation equipment in real time through an edge gateway device, transmit an adjusting instruction, and acquire the running state, environmental parameters and energy utilization conditions of the equipment in real time.
At the interface unit end, the device provided by the utility model is used as a master station to interact with equipment such as an intelligent metering instrument, a sensor and other terminals, and the data acquisition is realized. Meanwhile, the ARM Cortex-A8 core processor is compatible with adaptation of various communication protocols, including Modbus-RTU, ModbusTCP, DL/T645-2007, CAN2.0B and the like.
On the communication unit side, the device provided by the utility model performs on-site real-time data interaction with a virtual power plant system, and when an uploading function is realized, an interoperation interface protocol DL/T1867 electric power demand response information exchange specification is utilized to report virtual power plant resources and a topological relation system, real-time data and historical data under the gateway, or data interaction is performed with an energy management system through an MQTT protocol, analysis and short-term load prediction are performed according to the uploaded data, and the data are uploaded to the virtual power plant system. When the load control function is realized, a control instruction issued from the virtual power plant system or the user side energy management system can be received and analyzed, and the control instruction is requested by the virtual power plant master station and forwarded by the gateway substation; or through MQTT protocol, the gateway transmits the request by the energy management system.
The relay control unit adopts GMI D5096 intelligent safety relay, and the relay is integrated with a micro-processing chip, so that comprehensive diagnosis information of a load loop can be provided, and reliable control of load equipment is realized.
The man-machine interaction unit is responsible for input and output control of the keys and the indicator lamp.
Claims (5)
1. An edge gateway device facing a virtual power plant is characterized in that the edge gateway device comprises a main control unit based on an ARM Cortex-A8 core processor, the main control unit accesses a virtual power plant control center and a user side energy management system through a gigabit Ethernet unit and a 4G communication chip SIM7600CE of the ARM Cortex-A8 core processor, and the user side energy management system accesses the virtual power plant control center;
the data interaction end of the main control unit is connected with an RS485 interface, a CAN interface, an Ethernet interface and a digital I/O interface; the method comprises the steps that N intelligent metering devices I collect current and voltage signals of N load devices, N is larger than or equal to 0 and smaller than or equal to N, M intelligent metering devices II collect current and voltage signals of M energy storage devices, M is larger than or equal to 0 and smaller than or equal to M, L intelligent metering devices III collect current and voltage signals of L distributed energy source devices, L is larger than or equal to 0 and smaller than or equal to L, the intelligent metering devices I, the intelligent metering devices II or the intelligent metering devices III located at the local place are connected with a main control unit through RS485 interfaces, CAN interfaces or digital I/O interfaces, and the intelligent metering devices I, the intelligent metering devices II or the intelligent metering devices III located at the far end are in data connection with the main control unit through Ethernet interfaces; the current and voltage data acquisition ports of the local load devices in the rest N-N stations, the current and voltage data acquisition ports of the local energy storage devices in the M-M stations or the local current and voltage data acquisition ports in the L-L distributed energy devices are directly connected with the main control unit through an RS485 interface, a CAN interface or a digital I/O interface; the current and voltage data acquisition ports of the load equipment at the far end in the rest N-N stations, the current and voltage data acquisition ports of the energy storage equipment at the far end in the M-M stations or the current and voltage data acquisition ports at the far end in the L-L distributed energy equipment establish data connection with the main control unit through Ethernet interfaces; the main control unit is also connected with a local temperature and humidity sensor through an RS485 interface, a CAN interface or a digital I/O interface, the main control unit is connected with a remote temperature and humidity sensor through an Ethernet interface, and the total M temperature and humidity sensors are respectively used for acquiring temperature and humidity signals of M energy storage devices; the main control unit is connected with the control signal input end of the local load equipment, the energy storage equipment or the distributed energy equipment through an RS485 interface, a CAN interface or a digital quantity I/O interface, and establishes data connection with the control signal input end of the remote load equipment, the energy storage equipment or the distributed energy equipment through an Ethernet interface;
the power supply control signal output end of the main control unit is connected with the relay control unit, and the relay control unit is connected with the power supply ports of the N pieces of load equipment;
the human-computer interaction end of the main control unit is connected with the human-computer interaction unit;
and the 24V direct current power supply supplies power to the main control unit through the power supply unit.
2. The edge gateway device oriented to the virtual power plant as claimed in claim 1, wherein the main control unit is connected to an external random access memory and a FLASH memory, wherein the random access memory adopts 2 blocks of 128M DDR2 chips, and the FLASH memory adopts 256MB nand FLASH memory chips.
3. The edge gateway device towards a virtual power plant of claim 2, wherein the main control unit is further connected with an external solid state disk.
4. The edge gateway device oriented to the virtual power plant of claim 1, wherein the human-machine interaction unit comprises a status indicator light connected to a status output terminal of the main control unit and a switch button connected to a control signal input terminal of the main control unit.
5. The edge gateway device towards a virtual power plant as claimed in claim 1, wherein said relay control unit employs GMID5096 smart safety relay.
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| CN202122238304.XU CN215956553U (en) | 2021-09-15 | 2021-09-15 | Edge gateway device for virtual power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115360708A (en) * | 2022-10-21 | 2022-11-18 | 北京东润环能科技股份有限公司 | Coordination control method and device for virtual power plant, electronic equipment and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115360708A (en) * | 2022-10-21 | 2022-11-18 | 北京东润环能科技股份有限公司 | Coordination control method and device for virtual power plant, electronic equipment and storage medium |
| CN115360708B (en) * | 2022-10-21 | 2023-01-06 | 北京东润环能科技股份有限公司 | Coordination control method and device for virtual power plant, electronic equipment and storage medium |
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