Photovoltaic micro-grid equipment monitoring and environment sensing system based on LoRa Internet of Things

Abstract

The invention discloses a photovoltaic micro-grid equipment monitoring and environment sensing system based on a LoRa Internet of Things, aiming at different characteristics of photovoltaic micro-grid auxiliary equipment and each equipment area environment, long-distance, low-power-consumption and low-cost LoRa sensors are arranged in each equipment area of a photovoltaic micro-grid, the sensors are responsible for collecting monitoring area data in real time and transmitting wireless signals to a LoRa gateway, and the LoRa gateway is responsible for sending the wireless signals to the LoRa gateway. And when the data reaches a threshold value, alarm notification information is sent through the mobile internet. According to the invention, by means of a LoRa wireless communication mode, auxiliary equipment and equipment area environment parameter monitoring, equipment intelligent control and three-dimensional visual panoramic display are completed, and auxiliary support of real-time data and linkage functions is provided for photovoltaic micro-grid auxiliary equipment operation and environment monitoring.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic microgrid auxiliary equipment automation control, and specifically relates to a photovoltaic microgrid equipment monitoring and environment perception system based on LoRa Internet of Things. Background Art

[0002] Domestic operation and maintenance personnel periodically inspect photovoltaic microgrids, which is a relatively old monitoring method that is still in use. The staff carry some tools and simple instruments with them, and conduct simple tests with the naked eye and instruments, such as using infrared temperature measuring instruments to detect temperature. Since temperature can simply reflect the operating status of the equipment, this method can be used to make judgments from the side, but since accidents cannot be checked based on the temperature of the equipment, missed inspections often occur, making it difficult to ensure the safe operation of photovoltaic microgrids.

[0003] The various sensor systems installed in traditional photovoltaic microgrids, such as temperature and humidity, are separated from each other. Since there is no reference or connection between them, it is difficult to provide sufficient support for the monitoring system. The efficiency is very low, and the various sensor device systems cannot exert greater benefits.

[0004] In the past, online monitoring of equipment had shortcomings such as incomplete state perception, high component power consumption, high labor costs, low integration, and difficulty in expansion. The company's Internet of Things technology application has reached a certain scale. However, compared with the requirements of energy Internet construction, there are problems such as incomplete monitoring perception, loose business integration, and insufficient shared applications, which still need to be further deepened and improved. Summary of the invention

[0005] The purpose of the present invention is to propose a photovoltaic microgrid auxiliary equipment monitoring and environmental perception system based on the LoRa Internet of Things, deploy security, environment, partial discharge, vibration and other intelligent sensing elements in the photovoltaic microgrid operating equipment body and equipment area, and at the same time, based on the Internet of Things and three-dimensional visualization technology, relying on a three-dimensional digital design platform, build a photovoltaic microgrid full-domain, panoramic information integrated integrated auxiliary equipment monitoring and control management platform, realizing the comprehensive and in-depth perception of the photovoltaic microgrid auxiliary facilities and equipment body and the environmental status of each equipment area.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: The present invention provides a photovoltaic microgrid auxiliary equipment monitoring and environment perception system based on the LoRa Internet of Things, including: an auxiliary equipment monitoring and control system, a three-dimensional visualization display system and a LoRa wireless communication system; The auxiliary equipment monitoring and control system is used to monitor the parameters of photovoltaic microgrid auxiliary equipment, monitor environmental data in real time, and perform intelligent control on auxiliary equipment; The LoRa wireless communication system is used to collect monitoring data of auxiliary equipment and control systems within the coverage area, and to uniformly model the collected data and data types from different sources, providing a complete panoramic information library for photovoltaic microgrid auxiliary equipment and operating environment; The three-dimensional visualization display system is used to establish a three-dimensional model of a photovoltaic microgrid and auxiliary equipment based on the monitoring data of the photovoltaic microgrid auxiliary equipment and the environmental data, and to perform a panoramic three-dimensional display and application of the photovoltaic microgrid.

[0007] Further, the auxiliary equipment monitoring and control system includes a wireless environmental temperature and humidity sensor, an auxiliary equipment sensor, a control box and an on-site module; The wireless environmental temperature and humidity sensor is configured on the photovoltaic container and photovoltaic components of the photovoltaic microgrid system to monitor the environmental status and temperature and humidity in real time, and transmit the monitoring data to the LoRa wireless communication system; The auxiliary equipment sensors are configured on the access control system and operating equipment in the photovoltaic container to monitor the auxiliary equipment parameters in real time and transmit the monitoring data to the LoRa wireless communication system; the operating equipment includes oil chromatography, micro-water, partial discharge, SF6 density, intelligent pressure plate and fire protection system; The control box is arranged in the main control room of the photovoltaic microgrid, and is used to receive the remote control command transmitted by the LoRa wireless communication system, and send the command to the local module; The local module is configured in the lighting control and access control system, and is used to perform corresponding actions based on the received instructions.

[0008] Furthermore, each sensor in the auxiliary equipment monitoring and control system adopts the unified communication protocol of IEC61850 protocol.

[0009] Furthermore, the LoRa wireless communication system includes a LoRa wireless communication module and a LoRa gateway; The wireless environmental temperature and humidity sensor and the auxiliary equipment sensor are both equipped with a LoRa wireless communication module, and the LoRa wireless communication module is used to transmit the monitoring data of each sensor to the LoRa gateway.

[0010] Furthermore, the LoRa gateway is specifically used for: Receive the monitoring data transmitted by the LoRa wireless communication module within the coverage area, perform protocol conversion, connect to the server in the photovoltaic microgrid safety zone II through Ethernet / 3G / 4G / WIFI, and access the photovoltaic microgrid energy management platform to uniformly model the collected data and data types from different sources.

[0011] Furthermore, the three-dimensional visualization display system is specifically used for: The monitoring data and environmental data of photovoltaic microgrid auxiliary equipment are modeled using Bentley Microstation and Substation 3D design platforms to establish a 3D model of the photovoltaic microgrid and auxiliary equipment.

[0012] Furthermore, the three-dimensional visualization display system includes: a three-dimensional scene module and a status information display module; The three-dimensional scene module is used to perform three-dimensional modeling of building sites inside and outside the station, electrical primary and secondary equipment, and communication information equipment based on 3D graphics rendering to achieve holographic panoramic simulation of photovoltaic microgrids; The status information display module is used to dynamically display and monitor various data of the simulation device in a three-dimensional scene.

[0013] Furthermore, the status information display module is specifically used to: Based on the temperature information of the equipment and scenes in the station, a thermal imaging simulation cloud map of the station temperature is generated, which shows the overall temperature distribution of the area in the station.

[0014] Furthermore, the status information display module is specifically used to: Present data in the form of digital displays, instrument clusters and indicator lights.

[0015] Furthermore, a data isolation component and a firewall are configured between the photovoltaic microgrid security zone II and the LoRa gateway.

[0016] In summary, the present invention has the following beneficial effects: Aiming at the different characteristics of auxiliary equipment and equipment area environment of photovoltaic microgrid system, the present invention uses auxiliary equipment and environmental quantity sensor devices, LoRa wireless communication module and three-dimensional visualization display system to complete the auxiliary equipment and equipment area environmental parameter monitoring and equipment intelligent control, and provide auxiliary support of real-time data and linkage function for the operation and control of auxiliary equipment of photovoltaic microgrid.

[0017] Relying on a three-dimensional digital design platform, the present invention constructs a new photovoltaic microgrid auxiliary equipment monitoring and environmental perception system characterized by informatization, automation, and interactivity, realizes data classification, storage and analysis, intelligent linkage functions, and panoramic display in a three-dimensional visualization manner, laying a solid foundation for the intelligent operation and management of photovoltaic microgrids and comprehensive energy efficiency evaluation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The photovoltaic microgrid auxiliary equipment monitoring and environment perception system architecture provided by the present invention. DETAILED DESCRIPTION

[0019] The present invention is further described below. The following examples are only used to more clearly illustrate the technical solution of the present invention, and are not intended to limit the protection scope of the present invention.

[0020] like Figure 1 As shown, the present invention provides a photovoltaic microgrid auxiliary equipment monitoring and environment perception system based on the LoRa Internet of Things, including an auxiliary equipment monitoring and control system, a three-dimensional visualization display system and a LoRa wireless communication system.

[0021] In the present invention, the auxiliary equipment monitoring and control system is used to monitor the parameters of the auxiliary equipment of the photovoltaic microgrid, monitor the environmental data in real time, and perform intelligent control on the auxiliary equipment.

[0022] Specifically, the auxiliary equipment monitoring and control system includes wireless environmental temperature and humidity sensors, auxiliary equipment sensors, control boxes and local modules. Through various sensors, the photovoltaic microgrid is image-monitored, and security, lighting, heating and ventilation, and environmental monitoring are performed to achieve intelligent linkage control.

[0023] Furthermore, wireless environmental temperature and humidity sensors are configured on photovoltaic containers and photovoltaic modules in the photovoltaic microgrid system to monitor the environmental status and temperature and humidity in real time, and transmit the monitoring data to the LoRa gateway through the LoRa wireless communication module; Auxiliary equipment sensors are configured in the photovoltaic container. By installing sensors on the access control system, operating equipment including oil chromatography, micro-water, partial discharge, SF6 density, smart pressure plate and fire protection system, the auxiliary equipment parameters are monitored in real time, and the monitoring data is transmitted to the LoRa gateway through the LoRa wireless communication module; The control box is located in the main control room of the photovoltaic microgrid and is used to receive remote control commands from the LoRa gateway and send commands to the local modules. The local module is configured in the lighting control and access control system to receive signals from the control box for real-time remote control.

[0024] When the monitoring data reaches the threshold, the communication device uploads it to the cloud platform via the mobile Internet and sends an alarm notification message.

[0025] Preferably, the auxiliary equipment monitoring and control system adopts the unified communication protocol of IEC61850 protocol, which solves the problem of access to different protocol subsystems. The whole station monitoring background, online monitoring, auxiliary control, environment and other data are uniformly sent up, and when the data reaches the threshold, the alarm notification information is sent through the mobile Internet, realizing the panoramic information collection, centralized display and real-time alarm of photovoltaic microgrid such as monitoring information, abnormal alarm, equipment status, auxiliary system, etc.

[0026] In the present invention, the LoRa wireless communication system receives the reported data of the auxiliary equipment monitoring and control system within the coverage area through the LoRa gateway, converts the front-end information into a protocol, connects to the server through Ethernet / 3G / 4G / WIFI to access the photovoltaic microgrid energy management platform, and uniformly models the collected data and data types from different sources, providing a complete panoramic information library for the photovoltaic microgrid auxiliary equipment and operating environment.

[0027] Specifically, each wireless environmental temperature and humidity sensor and auxiliary equipment sensor is equipped with a LoRa wireless communication module, and the LoRa wireless communication module is used to transmit the sensor monitoring data to the LoRa gateway.

[0028] An appropriate number of sensors are arranged on the equipment body and equipment area, and LoRa wireless communication modules are configured on the sensors. The sensors detect the real-time status information of the equipment and equipment area, and transmit the collected information to the LoRa gateway in real time through the LoRa wireless communication module. The LoRa gateway analyzes and processes the status of sensor nodes in different internal areas to achieve complete monitoring of the auxiliary equipment and environmental status of the photovoltaic microgrid.

[0029] In the present invention, the three-dimensional visualization display system is used to establish a three-dimensional model of the photovoltaic microgrid and auxiliary equipment based on monitoring and environmental perception data, and to perform a panoramic three-dimensional display and application of the photovoltaic microgrid.

[0030] Specifically, the 3D visualization display system uses the models, databases, drawings, files and other information established on the Bentley Microstation and Substation 3D design platforms as carriers to establish a 3D model of the photovoltaic microgrid and auxiliary equipment, and realize a 3D panoramic display of the photovoltaic microgrid.

[0031] The application of 3D visualization technology can improve the operation level of photovoltaic microgrids while also improving the control and management capabilities of the entire photovoltaic microgrid, thereby realizing a photovoltaic microgrid intelligent auxiliary environmental perception system based on 3D visualization technology. According to the interface provided by the Bentley 3D model, the status information that has been aggregated and reprocessed is displayed in a 3D visualization manner.

[0032] Furthermore, the three-dimensional visualization display system mainly includes three-dimensional scenes, status information display, etc. The three-dimensional scene refers to the three-dimensional modeling of the building site inside and outside the station, electrical primary and secondary equipment, and communication information equipment based on 3D graphics rendering technology, to achieve a holographic panoramic simulation of the photovoltaic microgrid, providing a platform foundation for the display of advanced system applications.

[0033] The status information is displayed in the form of digital display, instrument panel and indicator light, dynamically displaying and monitoring various data of simulated equipment in a three-dimensional scene; collecting the temperature information of the equipment and scene in the station, generating a thermal imaging simulation cloud map of the temperature in the station, and displaying the overall temperature distribution of the area in the station, realizing multi-angle simulation observation of hot spots; providing various forms of video surveillance image display, combined with three-dimensional scenes to display real-time image information on the scene.

[0034] It should be further explained that data isolation components and firewalls are configured between the photovoltaic microgrid security zone II and the LoRa gateway.

[0035] The present invention complies with relevant industry standards and specifications such as GB / T33599-2017 "Specifications for Grid-connected Operation and Control of Photovoltaic Power Stations" and GB / T33589-2017 "Technical Regulations for Microgrid Access to Power Systems".

[0036] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0037] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0038] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0039] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A photovoltaic microgrid auxiliary equipment monitoring and environmental perception system based on LoRa Internet of Things, It is characterized in that include: Auxiliary equipment monitoring and control system, 3D visualization display system and LoRa wireless communication system; The auxiliary equipment monitoring and control system is used to monitor the parameters of photovoltaic microgrid auxiliary equipment, monitor environmental data in real time, and perform intelligent control on auxiliary equipment; The LoRa wireless communication system is used to collect monitoring data of auxiliary equipment and control systems within the coverage area, and to uniformly model the collected data and data types from different sources, providing a complete panoramic information library for photovoltaic microgrid auxiliary equipment and operating environment; The three-dimensional visualization display system is used to establish a three-dimensional model of a photovoltaic microgrid and auxiliary equipment based on the monitoring data of the photovoltaic microgrid auxiliary equipment and the environmental data, and to perform a panoramic three-dimensional display and application of the photovoltaic microgrid.

2. According to claim 1, a photovoltaic microgrid auxiliary equipment monitoring and environment perception system based on LoRa Internet of Things, It is characterized in that The auxiliary equipment monitoring and control system includes a wireless environmental temperature and humidity sensor, an auxiliary equipment sensor, a control box and an on-site module; The wireless environmental temperature and humidity sensor is configured on the photovoltaic container and photovoltaic components of the photovoltaic microgrid system to monitor the environmental status and temperature and humidity in real time, and transmit the monitoring data to the LoRa wireless communication system; The auxiliary equipment sensors are configured on the access control system and operating equipment in the photovoltaic container to monitor the auxiliary equipment parameters in real time and transmit the monitoring data to the LoRa wireless communication system; the operating equipment includes oil chromatography, micro-water, partial discharge, SF6 density, intelligent pressure plate and fire protection system; The control box is arranged in the main control room of the photovoltaic microgrid, and is used to receive the remote control command transmitted by the LoRa wireless communication system, and send the command to the local module; The local module is configured in the lighting control and access control system, and is used to perform corresponding actions based on the received instructions.

3. According to the photovoltaic microgrid auxiliary equipment monitoring and environment perception system based on LoRa Internet of Things according to claim 1, It is characterized in that Each sensor in the auxiliary equipment monitoring and control system adopts the unified communication protocol of IEC61850 protocol.

4. A photovoltaic microgrid auxiliary equipment monitoring and environment perception system based on LoRa Internet of Things according to claim 1, It is characterized in that The LoRa wireless communication system includes a LoRa wireless communication module and a LoRa gateway; The wireless environmental temperature and humidity sensor and the auxiliary equipment sensor are both equipped with a LoRa wireless communication module, and the LoRa wireless communication module is used to transmit the monitoring data of each sensor to the LoRa gateway.

5. A photovoltaic microgrid auxiliary equipment monitoring and environment perception system based on LoRa Internet of Things according to claim 4, It is characterized in that The LoRa gateway is specifically used for: Receive the monitoring data transmitted by the LoRa wireless communication module within the coverage area, perform protocol conversion, connect to the server in the photovoltaic microgrid safety zone II through Ethernet / 3G / 4G / WIFI, and access the photovoltaic microgrid energy management platform to uniformly model the collected data and data types from different sources.

6. A photovoltaic microgrid auxiliary equipment monitoring and environment perception system based on LoRa Internet of Things according to claim 1, It is characterized in that The three-dimensional visualization display system is specifically used for: The monitoring data and environmental data of photovoltaic microgrid auxiliary equipment are modeled using Bentley Microstation and Substation 3D design platforms to establish a 3D model of the photovoltaic microgrid and auxiliary equipment.

7. A photovoltaic microgrid auxiliary equipment monitoring and environment perception system based on LoRa Internet of Things according to claim 6, It is characterized in that The three-dimensional visualization display system includes: a three-dimensional scene module and a status information display module; The three-dimensional scene module is used to perform three-dimensional modeling of building sites inside and outside the station, electrical primary and secondary equipment, and communication information equipment based on 3D graphics rendering to achieve holographic panoramic simulation of photovoltaic microgrids; The status information display module is used to dynamically display and monitor various data of the simulation device in a three-dimensional scene.

8. A photovoltaic microgrid auxiliary equipment monitoring and environment perception system based on LoRa Internet of Things according to claim 7, It is characterized in that The status information display module is specifically used to: Based on the temperature information of the equipment and scenes in the station, a thermal imaging simulation cloud map of the station temperature is generated, which shows the overall temperature distribution of the area in the station.

9. A photovoltaic microgrid auxiliary equipment monitoring and environment perception system based on LoRa Internet of Things according to claim 7, It is characterized in that The status information display module is specifically used to: Present data in the form of digital displays, instrument clusters and indicator lights.

10. A photovoltaic microgrid auxiliary equipment monitoring and environment perception system based on LoRa Internet of Things according to claim 5, It is characterized in that A data isolation component and a firewall are configured between the photovoltaic microgrid security zone II and the LoRa gateway.

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