Island microgrid information acquisition method and device, storage medium and electronic equipment

Abstract

The invention discloses an island micro-grid information acquisition method and device, a storage medium and electronic equipment. The method comprises the steps that communication network information of the island micro-grid is acquired, and the communication network information is used for representing the connection state and the data transmission state between different devices in the island micro-grid; based on the communication network information, first parameter information of a resource scheduling system corresponding to the island microgrid is determined, the resource scheduling system is used for allocating resources of the island microgrid, and the first parameter information is parameter information of a management object in the resource scheduling system; and obtaining second parameter information of the island micro-grid based on the first parameter information by using an information processing system corresponding to the island micro-grid. According to the invention, the technical problems that the information of the island microgrid cannot be effectively obtained and the information cannot be effectively interacted are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of information acquisition, and in particular to an information acquisition method, device, storage medium and electronic device for an isolated island microgrid. Background Art

[0002] At present, under the background of vigorously promoting the construction of clean energy system, the installed capacity of distributed new energy is constantly increasing and gradually embedded in the microgrid system. As the penetration rate of new energy gradually increases, the interaction of each link of "source-grid-load-storage" in the network architecture of isolated microgrid is becoming increasingly complex, resulting in the technical problem that the information of isolated microgrid cannot be effectively obtained and the information cannot be effectively interacted.

[0003] Currently, no effective solution has been proposed for the above-mentioned technical problems of being unable to effectively obtain information on isolated microgrids and being unable to effectively exchange information. Summary of the invention

[0004] The embodiments of the present invention provide an information acquisition method, device, storage medium and electronic device for an isolated microgrid to solve the technical problems that the information of the isolated microgrid cannot be effectively acquired and the information cannot be effectively exchanged.

[0005] According to one aspect of the embodiment of the invention, a method for obtaining information of an isolated microgrid is provided. The method may include: obtaining communication network information of the isolated microgrid, wherein the communication network information is used to characterize the connection status and data transmission status between different devices in the isolated microgrid; based on the communication network information, determining the first parameter information of the resource scheduling system corresponding to the isolated microgrid, wherein the resource scheduling system is used to allocate resources of the isolated microgrid, and the first parameter information is the parameter information of the management object in the resource scheduling system; using the information processing system corresponding to the isolated microgrid, obtaining the second parameter information of the isolated microgrid based on the first parameter information.

[0006] Optionally, based on the communication network information, first parameter information of the resource scheduling system corresponding to the isolated microgrid is determined, including: based on the communication network information, determining a collection method for the first parameter information, wherein the collection method includes a downward collection method and an upward collection method; based on the downward collection method, using a collection module to collect the first parameter information; based on the upward collection method, using a cloud scheduling platform to obtain the first parameter information.

[0007] Optionally, the method also includes: obtaining a target communication protocol and computing architecture of the isolated island microgrid; and establishing an information processing system based on the target communication protocol and computing architecture.

[0008] Optionally, the communication network information includes: communication interface information and communication bus type, wherein the communication interface information is used to characterize that hardware devices in the isolated microgrid can exchange data with external devices normally, and the communication bus type is used to characterize the transmission performance between multiple hardware devices.

[0009] Optionally, the communication bus types include: a first bus type, a second bus type and a third bus type, wherein the first bus type is used to characterize a bus used in a harsh working environment, the second bus type is used to characterize a bus used in short-distance data transmission, and the third bus type is used to characterize a bus used in an environment with good communication.

[0010] Optionally, the management objects include: a target thermal power plant, a photovoltaic power station, an aluminum electrolysis plant and a power transmission network, wherein the target thermal power plant includes two target cogeneration units.

[0011] Optionally, the information processing system includes: an information layer and a physical layer, wherein the information layer is used to analyze and process data of multiple hardware devices, and the physical layer is used to characterize the connection mode between multiple management objects.

[0012] According to one aspect of an embodiment of the present invention, an information acquisition device for an isolated microgrid is provided. The device may include: a first acquisition unit, used to acquire communication network information of the isolated microgrid, wherein the communication network information is used to characterize the connection status and data transmission status between different devices in the isolated microgrid; a determination unit, used to determine first parameter information of a resource scheduling system corresponding to the isolated microgrid based on the communication network information, wherein the resource scheduling system is used to allocate resources of the isolated microgrid, and the first parameter information is parameter information of a management object in the resource scheduling system; a second acquisition unit, used to use an information processing system corresponding to the isolated microgrid to acquire second parameter information of the isolated microgrid based on the first parameter information.

[0013] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0014] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0015] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0016] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0017] According to another aspect of the embodiments of the present invention, a computer program is further provided. When the computer program is executed by a processor, the methods in the embodiments of the present invention are implemented.

[0018] In an embodiment of the present invention, the communication network information of the isolated microgrid is obtained, wherein the communication network information is used to characterize the connection status and data transmission status between different devices in the isolated microgrid; based on the communication network information, the first parameter information of the resource scheduling system corresponding to the isolated microgrid is determined, wherein the resource scheduling system is used to allocate resources of the isolated microgrid, and the first parameter information is the parameter information of the management object in the resource scheduling system; and the information processing system corresponding to the isolated microgrid is used to obtain the second parameter information of the isolated microgrid based on the first parameter information. That is to say, in this embodiment, the communication network information of the isolated microgrid can be obtained first, and then the first parameter information of the resource scheduling system corresponding to the isolated microgrid can be determined based on the communication network information obtained above, and finally the information processing system corresponding to the isolated microgrid is used to obtain the second parameter information of the isolated microgrid based on the first parameter information of the management object. Considering that after obtaining the communication network information of the isolated microgrid, the first parameter information of the resource scheduling system can be determined according to the communication network information, the information processing system of the isolated microgrid can be used to obtain the second parameter information of the isolated microgrid according to the first parameter information of the management object obtained above, thereby solving the technical problems of not being able to effectively obtain the information of the isolated microgrid and the inability to effectively interact with the information, and achieving the technical effect that the information of the isolated microgrid can be effectively obtained and the information can be effectively interacted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 is a flow chart of an information acquisition method for an isolated island microgrid according to an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of information interaction for an isolated island microgrid based on a terminal-edge-cloud trinity approach according to an embodiment of the present invention;

[0022] Figure 3is a schematic diagram of a power transmission line monitoring system according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of an information acquisition device for an isolated island microgrid according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] According to an embodiment of the present invention, a method for obtaining information of an island microgrid is provided. It should be noted that in the flowchart of the accompanying drawings, the steps shown therein can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from that shown here.

[0027] The following is an introduction to the information acquisition method of the isolated island microgrid according to an embodiment of the present invention.

[0028] Figure 1 is a flow chart of a method for obtaining information of an isolated island microgrid according to an embodiment of the present invention. Figure 1 As shown, the method may include the following steps:

[0029] Step S101, obtaining communication network information of the isolated island microgrid.

[0030] In the technical solution provided in the above step S101 of the present invention, the communication network of the isolated island microgrid can be scanned by a network scanning tool to obtain the communication network information of the isolated island microgrid, wherein the communication network information is used to characterize the connection status and data transmission status between different devices in the isolated island microgrid.

[0031] For example, the connection status between solar photovoltaic systems, wind power generation systems, batteries, inverters and other devices can be obtained, or the data transmission status between the control center of an isolated microgrid and each device can be obtained.

[0032] It should be noted that this is only a preferred implementation method for obtaining the communication network information of the isolated island microgrid, and does not specifically limit the process and method for obtaining the communication network information of the isolated island microgrid.

[0033] Step S102: determining first parameter information of a resource scheduling system corresponding to the isolated island microgrid based on the communication network information.

[0034] In the technical solution provided in the above step S102 of the present invention, after obtaining the communication network information, the first parameter information of the resource scheduling system corresponding to the isolated island microgrid can be determined according to the communication network information. The resource scheduling system is used to allocate the resources of the isolated island microgrid. The resource scheduling system can be called an energy management system (Energy Management System, referred to as EMS).

[0035] Optionally, the first parameter information is parameter information of a management object in the resource scheduling system, wherein the management object may include: a photovoltaic power station, a coal-based nano-carbon hydrogen cogeneration thermal power plant, an aluminum electrolysis plant, and a power transmission network.

[0036] Optionally, based on the basic functions of the resource scheduling system, the communication network information is analyzed to obtain the management object of the resource scheduling system and the first parameter information corresponding to the management object, wherein the first parameter information is used to characterize the operation data of the management object in a normal operation state.

[0037] It should be noted that this is only a preferred implementation method for determining the management object of the resource scheduling system of the isolated island microgrid, and does not specifically limit the process and method for determining the management object of the resource scheduling system of the isolated island microgrid. As long as the process and method for determining the management object of the resource scheduling system of the isolated island microgrid are based on the communication network information, they are within the protection scope of the present invention and are not listed here.

[0038] Step S103: using an information processing system corresponding to the isolated island microgrid, obtaining second parameter information of the isolated island microgrid based on the first parameter information.

[0039] In the technical solution provided in the above step S103 of the present invention, an information processing system corresponding to the isolated island microgrid can be used to obtain the second parameter information of the isolated island microgrid according to the first parameter information of the management object, wherein the information processing system can be called a cyber-physical system.

[0040] Optionally, after obtaining the second parameter information of the isolated island microgrid, the operating status of the isolated island microgrid can be determined. When the isolated island microgrid is in normal operating state, the resources of the isolated island microgrid can be effectively scheduled to achieve the purpose of effective information interaction between various systems of the isolated island microgrid.

[0041] It can be understood that this is only a preferred implementation method for obtaining the second parameter information of the isolated microgrid, and the process and method for obtaining the second parameter information of the isolated microgrid are not specifically limited. As long as the process and method for obtaining the second parameter information of the isolated microgrid are based on the first parameter information of the management object, they are within the protection scope of the present invention and will not be repeated here.

[0042] In the above steps S101 to S103 of the present invention, the communication network information of the isolated microgrid is obtained, wherein the communication network information is used to characterize the connection status and data transmission status between different devices in the isolated microgrid; based on the communication network information, the first parameter information of the resource scheduling system corresponding to the isolated microgrid is determined, wherein the resource scheduling system is used to allocate the resources of the isolated microgrid, and the first parameter information is the parameter information of the management object in the resource scheduling system; the information processing system corresponding to the isolated microgrid is used to obtain the second parameter information of the isolated microgrid based on the first parameter information. That is to say, in this embodiment, the communication network information of the isolated microgrid can be obtained first, and then the first parameter information of the resource scheduling system corresponding to the isolated microgrid can be determined according to the communication network information obtained above, and finally the information processing system corresponding to the isolated microgrid is used to obtain the second parameter information of the isolated microgrid according to the first parameter information of the management object. Considering that after obtaining the communication network information of the isolated microgrid, the first parameter information of the resource scheduling system can be determined according to the communication network information, the information processing system of the isolated microgrid can be used to obtain the second parameter information of the isolated microgrid according to the first parameter information of the management object obtained above, thereby solving the technical problems of not being able to effectively obtain the information of the isolated microgrid and the inability to effectively interact with the information, and achieving the technical effect that the information of the isolated microgrid can be effectively obtained and the information can be effectively interacted.

[0043] The above method of this embodiment is further introduced below.

[0044] As an optional implementation method, based on communication network information, first parameter information of a resource scheduling system corresponding to an isolated microgrid is determined, including: based on the communication network information, determining a collection method for the first parameter information, wherein the collection method includes a downward collection method and an upward collection method; based on the downward collection method, using a collection module to collect the first parameter information; based on the upward collection method, using a cloud scheduling platform to obtain the first parameter information.

[0045] In this embodiment, the collection method of the first parameter information can be determined based on the communication network information obtained. If the collection method at this time is a downward collection method, the first parameter information can be collected using the collection module; if the collection method at this time is an upward collection method, the first parameter information can be obtained using the cloud scheduling platform, where the downward collection method can be referred to as downward collection, and the upward collection method can be referred to as upward collection.

[0046] Optionally, the acquisition module is arranged in a supervisory control and data acquisition (SCADA) system corresponding to the isolated island microgrid.

[0047] Optionally, the data collection and monitoring system can be used to collect data information of different management objects. For example, the main function of the SCADA system of the isolated microgrid is to collect and monitor data information of coal-based nano-carbon hydrogen cogeneration thermal power plants, photovoltaic power stations, aluminum electrolysis plants and transmission lines.

[0048] Optionally, the first parameter information is acquired by using an upward collection method using a cloud dispatching platform. For example, the upward collection method is to use the cloud dispatching platform to provide full-network data to achieve full-state perception and monitoring of the isolated island microgrid.

[0049] As an optional implementation mode, the method also includes: obtaining a target communication protocol and computing architecture of the isolated island microgrid; and establishing an information processing system based on the target communication protocol and computing architecture.

[0050] In this embodiment, the target communication protocol and computing architecture of the isolated microgrid can be obtained, and then the information processing system can be established according to the target communication protocol and computing architecture obtained above. The target communication protocol can be a preset communication protocol, which can be represented by the IEC 61850 standard protocol. For example, the IEC 61850 standard protocol mainly provides a unified communication standard for information interaction of various devices in the isolated microgrid through object-oriented modeling, abstract communication service interface, specific communication service mapping and other technologies, thereby improving the interoperability between devices with different communication interfaces and communication standards.

[0051] Optionally, the computing architecture can be a "end-edge-cloud" trinity architecture. The "end-edge-cloud" trinity architecture is a distributed architecture that integrates computing resources at the end, edge, and cloud levels to achieve data processing and computing. Among them, "end" is used to represent the power grid terminal, which refers to the executive subject in the isolated microgrid, including various intelligent sensors, switches, meters, cameras, etc., which are used to collect data from the terminal side such as thermal power plants, photovoltaic power stations, aluminum electrolysis plants, and transmission lines, and provide the "edge" or "cloud" with basic data information such as the equipment status, environmental status, and other auxiliary information of the isolated microgrid, and at the same time receive control instructions issued by the upper control center, so that the device performs corresponding actions according to the control instructions.

[0052] Furthermore, "edge" is used to characterize edge computing. In order to alleviate the computing pressure of the cloud center, an edge controller with certain data storage, analysis and computing capabilities is usually set up closer to the data source side, so that the data on the terminal side such as coal-based nano-carbon hydrogen cogeneration thermal power plants, photovoltaic power stations, aluminum electrolysis plants, and transmission lines can be stored, calculated, and analyzed on the nearest edge cloud, realizing on-site optimization of system decision-making and control, and improving computing efficiency.

[0053] In addition, "cloud" is used to characterize the cloud scheduling platform. Compared with edge computing and cloud computing centers, the cloud scheduling platform has more storage resources and stronger computing and analysis capabilities, mainly to complete more complex and wider computing tasks, such as photovoltaic output prediction model training, flow calculation and analysis, global optimization scheduling, etc. The cloud scheduling platform can effectively allocate resources across the entire network and maintain stable operation of the system.

[0054] As an optional implementation method, the communication network information includes: communication interface information and communication bus type, wherein the communication interface information is used to characterize whether the hardware devices in the isolated microgrid can exchange data with external devices normally, and the communication bus type is used to characterize the transmission performance between multiple hardware devices.

[0055] In this embodiment, the communication network information may include: communication interface information and communication bus type, wherein the communication interface information includes data such as interface type, interface specification, communication protocol, data transmission rate, etc.

[0056] Optionally, the communication interface information can be used to achieve interconnection between different devices, as well as data transmission and exchange. Communication interface information plays an important role in designing and developing devices or establishing systems, and can help developers determine the communication method and data exchange specifications between devices, thereby achieving interconnection between devices and improving functions.

[0057] It should be noted that the contents included in the communication network information are merely exemplified here, and the contents included in the communication network information are not specifically limited.

[0058] As an optional implementation method, the communication bus type includes: a first bus type, a second bus type and a third bus type, wherein the first bus type is used to characterize the bus used in a harsh working environment, the second bus type is used to characterize the bus used in short-distance data transmission, and the third bus type is used to characterize the bus used in an environment with good communication.

[0059] In this embodiment, the communication bus types may include: a first bus type, a second bus type and a third bus type, wherein the bus corresponding to the first bus type may be a controller area network (CAN) bus, the bus corresponding to the second bus type may be a remote serial communication bus (Recommended Standard 485, RS485 bus for short), and the bus corresponding to the third bus type may be Ethernet.

[0060] For example, in an isolated microgrid, the data communication methods between various devices and systems may include: CAN fieldbus, process fieldbus (PROFIBUS bus), serial communication interface standard bus (Recommended Standard 232, RS232 bus), RS485 bus, Ethernet and wireless sensor network (Zigbee), etc. Among them, CAN fieldbus is generally used in industrial control sites with harsh working environment and unfavorable communication, while RS485 bus can be widely used in simple, reliable and short-distance transmission. Ethernet is generally used in various workstations or servers of upper-level monitoring systems with good communication environment. Therefore, the communication network combining Ethernet and fieldbus is an effective way to realize intelligent control of power grids.

[0061] As an optional implementation manner, the management objects include: a target thermal power plant, a photovoltaic power station, an aluminum electrolysis plant and a power transmission network, wherein the target thermal power plant includes two target cogeneration units.

[0062] In this embodiment, the management objects may include: a target thermal power plant, a photovoltaic power station, an aluminum electrolysis plant, and a power transmission network, wherein the target thermal power plant may be referred to as a coal-based nano-carbon hydrogen cogeneration thermal power plant, or simply referred to as a thermal power plant. An aluminum electrolysis plant may be referred to as an aluminum electrolysis plant. A target cogeneration unit may be referred to as a coal-based nano-carbon hydrogen cogeneration unit.

[0063] Optionally, a coal-based nano-carbon hydrogen cogeneration thermal power plant: The thermal power plant includes two coal-based nano-carbon hydrogen cogeneration units, and the actual output of the units is controlled by the dispatching center and is an adjustable power source. EMS can formulate a power generation plan for the cogeneration unit based on the principles of coordinated complementarity of the cogeneration unit and the photovoltaic power generation unit, as well as the safe and economic operation of the system based on the electrolytic aluminum load. The cogeneration unit can adjust the unit output power according to the above-mentioned power generation plan.

[0064] Optionally, photovoltaic power station: The photovoltaic output of the photovoltaic power station is related to uncontrollable environmental factors such as photovoltaic intensity and photovoltaic temperature, and is an unadjustable power source. EMS can model the photovoltaic power generation system model through meteorological data, and use power prediction methods such as artificial neural networks to predict the photovoltaic output.

[0065] Optionally, aluminum electrolysis plant: The aluminum electrolysis load in the aluminum electrolysis plant has the advantages of fast adjustment speed and large adjustment capacity, belongs to controllable load, and has strong load adjustment ability. EMS sends control commands to the control system corresponding to the aluminum electrolysis plant according to the output of cogeneration units and photovoltaics. EMS adjusts the electrolytic cell current by adjusting the on-load tap-changing transformer and saturated reactor to achieve the purpose of adjusting the power of the aluminum electrolysis load.

[0066] Optionally, transmission network: The transmission lines of the isolated microgrid are mainly 220 kilovolt (kV) lines. The EMS can perform power flow calculation, short-circuit analysis, and line loss calculation on the transmission lines, so as to promptly detect and eliminate line faults. If necessary, the line monitoring system corresponding to the transmission network accepts the control command issued by the EMS to execute the operation of putting a certain line into operation or cutting off the line.

[0067] It should be noted that the object types of the management objects are merely illustrated here, and the object types of the management objects are not specifically limited.

[0068] As an optional implementation mode, the information processing system includes: an information layer and a physical layer, wherein the information layer is used to analyze and process data of multiple hardware devices, and the physical layer is used to characterize the connection mode between multiple management objects.

[0069] In this embodiment, the information processing system may include: an information layer and a physical layer. Among them, the information layer mainly includes various intelligent sensor devices, computing devices, communication devices and other devices. Through various communication methods and communication devices, the whole network device status monitoring and information interaction can be realized, so as to realize data conversion, analysis and storage of data, and optimization of decision-making and other operations.

[0070] Furthermore, in the physical layer, the internal physical equipment in the coal-based nano-carbon hydrogen cogeneration thermal power plant, photovoltaic power station, and aluminum electrolysis plant in the isolated microgrid can be interconnected through the transmission network to achieve the energy supply and demand balance of the isolated microgrid.

[0071] In this embodiment, the information-physical coupling layer in the isolated microgrid is as follows: the information layer senses the operating status of the equipment in the physical layer through sensors and other devices, converts the energy flow into information flow, transmits it to the information layer through the communication network, and is processed by the information processing unit as the input of the decision control unit, thereby formulating the power generation plan of the cogeneration unit, predicting the photovoltaic output power, calculating the power flow of the transmission line, and regulating the electrolytic aluminum load power, etc. Finally, the decision unit sends the control instruction to the electrical equipment in the physical layer to control the operating status of the electrical equipment. Therefore, the result of the information layer optimization decision depends on the equipment operating status data input by the physical layer, and the operating status of the physical layer equipment depends on the control instruction issued by the information layer.

[0072] In this embodiment, the communication network information of the isolated microgrid is obtained, wherein the communication network information is used to characterize the connection status and data transmission status between different devices in the isolated microgrid; based on the communication network information, the first parameter information of the resource scheduling system corresponding to the isolated microgrid is determined, wherein the resource scheduling system is used to allocate resources of the isolated microgrid, and the first parameter information is the parameter information of the management object in the resource scheduling system; using the information processing system corresponding to the isolated microgrid, the second parameter information of the isolated microgrid is obtained based on the first parameter information. That is to say, in this embodiment, the communication network information of the isolated microgrid can be obtained first, and then the first parameter information of the resource scheduling system corresponding to the isolated microgrid can be determined based on the communication network information obtained above, and finally the information processing system corresponding to the isolated microgrid is used to obtain the second parameter information of the isolated microgrid based on the first parameter information of the management object. Considering that after obtaining the communication network information of the isolated microgrid, the first parameter information of the resource scheduling system can be determined according to the communication network information, the information processing system of the isolated microgrid can be used to obtain the second parameter information of the isolated microgrid according to the first parameter information of the management object obtained above, thereby solving the technical problems of not being able to effectively obtain the information of the isolated microgrid and the inability to effectively interact with the information, and achieving the technical effect that the information of the isolated microgrid can be effectively obtained and the information can be effectively interacted.

[0073] The technical solution of the embodiment of the present invention is illustrated below in conjunction with preferred implementation modes.

[0074] With the development of technologies such as the Internet of Things, communication technology, and edge-cloud interaction technology, traditional power systems are gradually developing towards a new type of power system that integrates digitization, intelligence, and networking. The current development trend of microgrids is to build a smart grid with full data sharing, full information transparency, and full network coverage. In order to improve the digital level of the power grid, it is a practical need to promote the green transformation of the energy system and the low-carbon transformation of the power grid, so as to achieve effective interaction of power grid dispatching information. Among them, the effective interaction of power grid dispatching information is the key content to promote the coordinated complementarity of the power grid's "source-grid-load-storage", the effective interconnection of the various links of "generation-transmission-distribution-use", and the deep integration of "information-physics".

[0075] At present, under the background of vigorously promoting the construction of clean energy system, the installed capacity of distributed new energy is increasing and gradually embedded in the microgrid system. Due to the gradual increase in the penetration rate of new energy, the interaction of each link of "source-grid-load-storage" in the network architecture of isolated microgrid is becoming increasingly complex, a large amount of data information is integrated into the microgrid system, and the uncertainty and intermittency of new energy power generation also bring huge challenges to the optimization calculation and coordinated control of the system, resulting in the inability to effectively obtain the information of isolated microgrid and the technical problem that the information cannot be effectively interacted.

[0076] In order to solve the above problems, the present invention proposes an information acquisition method for an isolated microgrid, which can first obtain the communication network information of the isolated microgrid, and then determine the first parameter information of the resource scheduling system corresponding to the isolated microgrid according to the communication network information obtained above, and finally use the information processing system corresponding to the isolated microgrid to obtain the second parameter information of the isolated microgrid according to the first parameter information of the management object. Considering that after obtaining the communication network information of the isolated microgrid, the first parameter information of the resource scheduling system can be determined according to the communication network information, and the information processing system of the isolated microgrid can be used to obtain the second parameter information of the isolated microgrid according to the first parameter information of the management object obtained above, thereby solving the technical problem that the information of the isolated microgrid cannot be effectively obtained and the information cannot be effectively interacted, and achieving the technical effect that the information of the isolated microgrid can be effectively obtained and the information can be effectively interacted.

[0077] In this embodiment, the information acquisition method of the isolated microgrid is applied to the target system to effectively acquire the information of the isolated microgrid. The target system can be obtained by combining the SCADA system and the EMS, which can be called a SCADA / EMS system. The EMS can also be called an EMS system.

[0078] Optionally, the SCADA / EMS system is an important guarantee for realizing data collection, monitoring and energy optimization and dispatching of the whole network. The SCADA system mainly collects data information of coal-based nano-carbon hydrogen cogeneration thermal power plants, photovoltaic power stations, aluminum electrolysis plants and transmission networks through communication networks, and monitors their operating status, thereby realizing full state perception and monitoring of isolated microgrids. Among them, the SCADA system transmits the collected data to the EMS system to provide data support for the optimization and dispatching of the EMS system.

[0079] In this embodiment, the coal-based nano-carbon hydrogen cogeneration thermal power plant, photovoltaic power station, aluminum electrolysis plant and transmission network are monitored by their respective local monitoring centers, which collect data from electrical equipment at the network terminals and then transmit the data to the remote SCADA system through the communication network. The SCADA system's multiple servers implement unified storage and monitoring.

[0080] Optionally, the SCADA / EMS system may include: a coal-based nano-carbon hydrogen cogeneration thermal power plant monitoring subsystem, a photovoltaic power station monitoring subsystem, an aluminum electrolysis plant monitoring subsystem and a transmission line monitoring subsystem.

[0081] Optionally, the monitoring subsystem of the coal-based nano-carbon hydrogen cogeneration thermal power plant: The architecture corresponding to the thermal power plant monitoring system can be divided into the station control layer, the communication management layer and the measurement and control protection layer. The communication method of Ethernet combined with the field bus can be used to realize information interaction. The field bus is used to connect various physical devices on site in the measurement and control protection layer. The various workstations in the station control layer can be connected to each other through Ethernet. The communication equipment of the communication management layer completes the data processing and protocol conversion from the field bus to Ethernet.

[0082] Optionally, photovoltaic power station monitoring subsystem: According to the IEC 61850 standard, the architecture corresponding to the photovoltaic power station monitoring system can be divided into a device layer, a bay layer and a photovoltaic power station layer. In a photovoltaic power station, the data of devices such as inverters and photovoltaic cells can be transmitted to the monitoring system through a simple and reliable RS485 bus communication method. For devices without RS485 interfaces, they can be converted to RS485 interfaces and connected to the RS485 bus through an interface converter (for example, CAN / RS485 converter and RS232 / RS485 converter), and the monitoring system of the photovoltaic power station communicates with the remote dispatch center or SCADA system through Ethernet.

[0083] Optionally, aluminum electrolysis plant monitoring subsystem: According to the IEC 61850 standard, the architecture corresponding to the aluminum electrolysis plant monitoring system can be divided into the substation layer, the bay layer and the equipment layer. At the equipment layer, the data collected by various intelligent data acquisition devices can be transmitted to the bay layer and the substation layer through the RS485 / CAN bus communication method. The bay layer includes various protection and measurement and control devices, which can be connected through the RS485 / CAN bus, and the CAN bus and Ethernet are connected through the Ethernet switch. The substation layer can use dual-channel redundant Ethernet to realize information exchange between internal workstations and between internal workstations and external SCADA systems.

[0084] Optionally, transmission line monitoring subsystem: The transmission line monitoring subsystem mainly monitors the operating status of physical equipment such as conductors, towers, insulators, etc. The detection units of each device are distributed over a wide range, and the collected data can be transmitted to the monitoring center through a wired or wireless communication network. Among them, the common wired communication method is optical fiber communication, and the wireless communication method includes wireless public network communication (4G / 5G), etc.

[0085] In this embodiment, the local monitoring system can transmit data to the SCADA / EMS system or dispatching center through the Ethernet switch and the communication network, or receive control commands issued by the upper layer, so as to achieve the purpose of using the SCADA system to collect power grid terminal data and monitor the operating status of the isolated island microgrid, and provide strong support for data collection and transmission, operation detection and control, and dispatch optimization instruction sending for the EMS system remote monitoring and global optimization, power dispatching, multi-source coordination, economic analysis and other functions.

[0086] In this embodiment, based on the end-edge-cloud collaborative interaction technology and the IEC 61850 standard, an isolated microgrid information-physical architecture can be constructed to achieve effective interaction of dispatch information of the isolated microgrid. From the perspective of the interaction of end-edge-cloud information, the information-physical architecture of the isolated microgrid can be divided into the terminal device layer, the edge control layer, and the cloud platform control layer.

[0087] Optionally, terminal device layer: the terminal device mainly monitors the operating status of the isolated microgrid, including the power parameters of the acquisition device, parameter information of various sensors, the operating status of the camera, the operating status of the intelligent circuit breaker, etc. It can also collect electrical equipment data on the terminal side of coal-based nano-carbon hydrogen cogeneration power plants, photovoltaic power stations, aluminum electrolysis plants, and transmission lines, such as current, voltage, active power, reactive power, switch status, temperature, etc.

[0088] Optionally, the edge control layer, including the edge controller, is generally deployed close to the data source to complete simple edge computing tasks of the local system and realize on-site optimization control of the system; the cloud platform control layer, including the SCADA / EMS system and the cloud platform, is used to complete the data information collection and monitoring of the entire network, and realize the global optimization and decision-making of the isolated island microgrid through cloud computing.

[0089] In this embodiment, the terminal device layer collects the terminal electrical equipment data through the intelligent data acquisition device, and then uploads it to the edge control layer through the field bus, and receives and receives the control instructions issued from the upper layer. The edge control layer uses edge computing to analyze and process the data uploaded by the end layer, and uploads the processing results and related necessary data to the scheduling cloud platform. The scheduling cloud platform uses its rich computing resources to summarize and process the data, and then delegates the analysis results and scheduling plans to each edge controller and terminal device, thereby completing the end-edge-cloud trinity information interaction of the isolated island microgrid. Moreover, the entire information interaction is based on the IEC 61850 standard, so the unified international standard IEC 61850 protocol can be used in the upper SCADA / EMS system, that is, the international standard IEC 61850 is used as a unified standard in the isolated island microgrid system. However, the communication method adopted by the lower monitoring system is different, and the supported communication protocols are also different. Therefore, various protocols need to be converted into the format of the IEC 61850 protocol during the communication process between the upper and lower monitoring systems. Based on the "end-edge-cloud" trinity technology and the IEC 61850 standard, effective interaction of dispatching information of isolated island microgrids is realized, providing a guarantee for energy management and dispatching of isolated island microgrids.

[0090] Figure 2 is a schematic diagram of information interaction for an isolated island microgrid based on a device-edge-cloud trinity approach according to an embodiment of the present invention, such as Figure 2 As shown, the schematic diagram may include: a cloud computing center 201, an edge computing unit 202, a communication network unit 203 and a terminal device 204.

[0091] Optionally, the cloud computing center 201 may include: a database 2011, an operating platform 2012, a data analysis module 2013, a model training module 2014 and an intelligent computing module 2015.

[0092] Optionally, the edge computing unit 202 may include: a data storage module 2021 , a distributed computing module 2022 and an operating platform 2023 .

[0093] Optionally, the communication network unit 203 is used to convert the protocol.

[0094] Optionally, the terminal device 204 may include: an electric meter 2041 , a switch 2042 , a line 2043 , a sensor 2044 , a circuit breaker 2045 and a transformer 2046 .

[0095] In this embodiment, the terminal device can realize data transmission with the edge computing unit through the communication network, and the edge computing unit can also realize data transmission with the cloud computing center through the communication network. After receiving the control instruction sent by the edge computing unit, the terminal device can send the regional decision to the edge computing unit. The terminal device can also send the global decision to the cloud computing center after receiving the control instruction sent by the cloud computing center. After receiving the control instruction from the cloud computing center, the edge computing unit can send the edge data to the cloud computing center.

[0096] Optionally, in the isolated microgrid SCADA system architecture, a coal-based nano-hydrocarbon fuel unit monitoring system, a photovoltaic power station monitoring system, an aluminum electrolysis plant monitoring system and a transmission line monitoring system.

[0097] Figure 3 is a schematic diagram of a transmission line monitoring system according to an embodiment of the present invention. Figure 3 As shown, the schematic diagram may include: a monitoring center 301, an Ethernet switch 302, a conductor vibration monitor 303, a conductor sag temperature monitor 304, a conductor windage monitor 305, a leakage current monitor 306, a conductor galloping monitor 307, a meteorological environment monitor 308 and an image and video monitoring device 309.

[0098] The monitoring center 301 is used to monitor the transmission lines.

[0099] The Ethernet switch 302 is used to transmit monitoring data and control signals in real time to ensure the stability and safety of the transmission line operation.

[0100] The conductor vibration monitor 303 is used to detect the vibration frequency, amplitude and vibration mode of the conductor, timely discover abnormal vibration of the conductor, and promptly alarm.

[0101] The conductor sag temperature monitor 304 is used to monitor the temperature change of the conductor in real time and present the monitoring result to the user through a display screen or a data output interface.

[0102] The conductor windage monitor 305 is used to monitor the windage of the conductor in real time.

[0103] The leakage current monitor 306 is used to ensure the safe use of electrical equipment.

[0104] The conductor vibration monitor 307 is used to monitor the state of the conductor in real time and promptly detect abnormal conductor vibration, thereby ensuring the safe operation of the power grid.

[0105] The meteorological environment monitor 308 is used to measure meteorological elements such as temperature, humidity, wind speed, wind direction, and air pressure.

[0106] The image and video monitoring device 309 is used to monitor images or videos.

[0107] Optionally, the SCADA system architecture of the isolated microgrid can collect terminal electrical equipment information of the power grid through various communication interfaces and communication methods, and transmit it to the upper-level SCADA system through switches and communication networks. Multiple servers in the SCADA system can realize data storage and monitoring of the entire network system, providing strong data support for the optimized scheduling of the EMS system of the isolated microgrid.

[0108] To further explain, the entire architecture of the SCADA system architecture is divided into the energy management layer, the communication management layer, the interval layer and the equipment layer. Among them, the equipment layer is mainly the terminal electrical equipment in the microgrid, which is the source of data generation and the main body of task execution. The interval layer collects data from the electrical equipment in the equipment layer through various measurement and control unit devices, and monitors their operating status in real time. After the collected data is converted through the communication management machine and switch of the communication management layer, it is transmitted to the energy management layer SCADA system through the communication network. Finally, the EMS system completes the global optimization decision of the isolated microgrid based on the data obtained by the SCADA system, and realizes the safe and economical operation of the isolated microgrid system.

[0109] In this embodiment, the communication network information of the isolated microgrid is obtained, wherein the communication network information is used to characterize the connection status and data transmission status between different devices in the isolated microgrid; based on the communication network information, the first parameter information of the resource scheduling system corresponding to the isolated microgrid is determined, wherein the resource scheduling system is used to allocate resources of the isolated microgrid, and the first parameter information is the parameter information of the management object in the resource scheduling system; using the information processing system corresponding to the isolated microgrid, the second parameter information of the isolated microgrid is obtained based on the first parameter information. That is to say, in this embodiment, the communication network information of the isolated microgrid can be obtained first, and then the first parameter information of the resource scheduling system corresponding to the isolated microgrid can be determined based on the communication network information obtained above, and finally the information processing system corresponding to the isolated microgrid is used to obtain the second parameter information of the isolated microgrid based on the first parameter information of the management object. Considering that after obtaining the communication network information of the isolated microgrid, the first parameter information of the resource scheduling system can be determined according to the communication network information, the information processing system of the isolated microgrid can be used to obtain the second parameter information of the isolated microgrid according to the first parameter information of the management object obtained above, thereby solving the technical problems of not being able to effectively obtain the information of the isolated microgrid and the inability to effectively interact with the information, and achieving the technical effect that the information of the isolated microgrid can be effectively obtained and the information can be effectively interacted.

[0110] According to an embodiment of the present invention, a device for acquiring information of an isolated microgrid is provided. It should be noted that the device for acquiring information of an isolated microgrid can be used to execute a method for acquiring information of an isolated microgrid in an embodiment.

[0111] Figure 4 Schematic diagram of an information acquisition device for an isolated microgrid according to an embodiment of the present invention. Figure 4 As shown, an information acquisition device 400 for an island microgrid may include: a first acquisition unit 401 , a determination unit 402 , and a second acquisition unit 403 .

[0112] The first acquisition unit 401 is used to acquire communication network information of the isolated island microgrid, wherein the communication network information is used to characterize the connection status and data transmission status between different devices in the isolated island microgrid.

[0113] The determination unit 402 is used to determine first parameter information of a resource scheduling system corresponding to the isolated island microgrid based on the communication network information, wherein the resource scheduling system is used to allocate resources of the isolated island microgrid, and the first parameter information is parameter information of a management object in the resource scheduling system.

[0114] The second acquisition unit 403 is used to acquire second parameter information of the isolated island microgrid based on the first parameter information by using an information processing system corresponding to the isolated island microgrid.

[0115] Optionally, the determination unit 402 may include: a determination module, used to determine a collection method for the first parameter information based on communication network information, wherein the collection method includes a downward collection method and an upward collection method; a collection module, used to collect the first parameter information using the collection module based on the downward collection method; and an acquisition module, used to acquire the first parameter information using the cloud scheduling platform based on the upward collection method.

[0116] Optionally, the device also includes: a third acquisition unit, used to acquire a target communication protocol and a computing architecture of the isolated island microgrid; and an establishment unit, used to establish an information processing system based on the target communication protocol and the computing architecture.

[0117] Optionally, the communication network information includes: communication interface information and communication bus type, wherein the communication interface information is used to characterize that hardware devices in the isolated microgrid can exchange data with external devices normally, and the communication bus type is used to characterize the transmission performance between multiple hardware devices.

[0118] Optionally, the communication bus types include: a first bus type, a second bus type and a third bus type, wherein the first bus type is used to characterize a bus used in a harsh working environment, the second bus type is used to characterize a bus used in short-distance data transmission, and the third bus type is used to characterize a bus used in an environment with good communication.

[0119] Optionally, the management objects include: a target thermal power plant, a photovoltaic power station, an aluminum electrolysis plant and a power transmission network, wherein the target thermal power plant includes two target cogeneration units.

[0120] Optionally, the information processing system includes: an information layer and a physical layer, wherein the information layer is used to analyze and process data of multiple hardware devices, and the physical layer is used to characterize the connection mode between multiple management objects.

[0121] In this embodiment, communication network information of the island microgrid is acquired through a first acquisition unit, wherein the communication network information is used to characterize the connection status and data transmission status between different devices in the island microgrid; a management object of a resource scheduling system corresponding to the island microgrid is determined by a determination unit based on the communication network information, wherein the resource scheduling system is used to allocate resources of the island microgrid; and second parameter information of the island microgrid is acquired based on the first parameter information of the management object by a second acquisition unit using an information processing system corresponding to the island microgrid, thereby solving the technical problem that the information of the island microgrid cannot be effectively acquired and the information cannot be effectively interacted, and achieving the technical effect that the information of the island microgrid can be effectively acquired and the information can be effectively interacted.

[0122] An embodiment of the present invention further provides an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0123] Optionally, the electronic device is also used to determine first parameter information of a resource scheduling system corresponding to the isolated microgrid based on the communication network information, including: determining a collection method for the first parameter information based on the communication network information, wherein the collection method includes a downward collection method and an upward collection method; based on the downward collection method, using a collection module to collect the first parameter information; based on the upward collection method, using a cloud scheduling platform to obtain the first parameter information.

[0124] Optionally, the electronic device is also used to: obtain a target communication protocol and computing architecture of the isolated island microgrid; and establish an information processing system based on the target communication protocol and computing architecture.

[0125] Optionally, the communication network information includes: communication interface information and communication bus type, wherein the communication interface information is used to characterize that hardware devices in the isolated microgrid can exchange data with external devices normally, and the communication bus type is used to characterize the transmission performance between multiple hardware devices.

[0126] Optionally, the communication bus types include: a first bus type, a second bus type and a third bus type, wherein the first bus type is used to characterize a bus used in a harsh working environment, the second bus type is used to characterize a bus used in short-distance data transmission, and the third bus type is used to characterize a bus used in an environment with good communication.

[0127] Optionally, the management objects include: a target thermal power plant, a photovoltaic power station, an aluminum electrolysis plant and a power transmission network, wherein the target thermal power plant includes two target cogeneration units.

[0128] Optionally, the information processing system includes: an information layer and a physical layer, wherein the information layer is used to analyze and process data of multiple hardware devices, and the physical layer is used to characterize the connection mode between multiple management objects.

[0129] An embodiment of the present invention further provides a computer-readable storage medium, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0130] An embodiment of the present invention further provides a computer program product, including a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0131] An embodiment of the present invention further provides a computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0132] An embodiment of the present invention further provides a computer program, which implements the methods in the above-mentioned embodiments of the present invention when executed by a processor.

[0133] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0134] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0135] In the several embodiments provided by the present invention, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic, for example, the division of units can be a logical function division, and there can be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0136] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0137] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0138] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0139] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for acquiring information of an isolated island microgrid, characterized in that: include: Acquire communication network information of the isolated island microgrid, wherein the communication network information is used to characterize the connection status and data transmission status between different devices in the isolated island microgrid; Based on the communication network information, determine first parameter information of a resource scheduling system corresponding to the isolated island microgrid, wherein the resource scheduling system is used to allocate resources of the isolated island microgrid, and the first parameter information is parameter information of a management object in the resource scheduling system; Using an information processing system corresponding to the isolated island microgrid, second parameter information of the isolated island microgrid is acquired based on the first parameter information.

2. The method according to claim 1, characterized in that Based on the communication network information, determining first parameter information of a resource scheduling system corresponding to the isolated island microgrid includes: Based on the communication network information, determine a collection method for the first parameter information, wherein the collection method includes a downward collection method and an upward collection method; Based on the downward collection method, using a collection module to collect the first parameter information; Based on the upward collection method, the first parameter information is obtained using a cloud scheduling platform.

3. The method according to claim 1, characterized in that The method further comprises: Obtaining a target communication protocol and computing architecture for the island microgrid; The information processing system is established based on the target communication protocol and the computing architecture.

4. The method according to claim 1, characterized in that: The communication network information includes: communication interface information and communication bus type, wherein the communication interface information is used to characterize that the hardware devices in the isolated microgrid can exchange data with external devices normally, and the communication bus type is used to characterize the transmission performance between multiple hardware devices.

5. The method according to claim 4, characterized in that The communication bus types include: a first bus type, a second bus type and a third bus type, wherein the first bus type is used to characterize the bus used in a harsh working environment, the second bus type is used to characterize the bus used in short-distance data transmission, and the third bus type is used to characterize the bus used in an environment with good communication.

6. The method according to claim 1, characterized in that The management objects include: a target thermal power plant, a photovoltaic power station, an aluminum electrolysis plant and a power transmission network, wherein the target thermal power plant includes two target cogeneration units.

7. The method according to claim 1, characterized in that The information processing system includes: an information layer and a physical layer, wherein the information layer is used to analyze and process data of multiple hardware devices, and the physical layer is used to characterize the connection mode between multiple management objects.

8. An information acquisition device for an isolated island microgrid, characterized in that: include: A first acquisition unit is used to acquire communication network information of the isolated island microgrid, wherein the communication network information is used to characterize the connection status and data transmission status between different devices in the isolated island microgrid; A determination unit, configured to determine, based on the communication network information, a management object of a resource scheduling system corresponding to the isolated island microgrid, wherein the resource scheduling system is configured to allocate resources of the isolated island microgrid, and the first parameter information is parameter information of a management object in the resource scheduling system; The second acquisition unit is used to acquire second parameter information of the isolated island microgrid based on the first parameter information by using an information processing system corresponding to the isolated island microgrid.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

10. An electronic device, characterized in that: include: A memory storing an executable program; A processor, configured to run the program, wherein the program executes the method according to any one of claims 1 to 7 when running.

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