Intelligent operation and maintenance monitoring device for photovoltaic power station

Abstract

The utility model discloses an intelligent operation and maintenance monitoring device for a photovoltaic power station, and belongs to the field of electronic information. According to the system, a plurality of acquisition nodes, a plurality of routing nodes, a coordination node, a high-definition camera and a 5G module are arranged at proper positions of a photovoltaic power station, an ad hoc network is established by the coordination node by utilizing a ZigBee wireless communication technology, and the acquisition nodes and the routing nodes are automatically accessed to the network after being started, so that the acquisition nodes and the routing nodes are automatically accessed to the 5G module. The acquisition of parameters such as current total power generation power, daily total power generation capacity, accumulated total power generation capacity, inverter operation data, box-type transformer data, electric energy quality, wind speed and the like of the photovoltaic power station is realized through sensor modules connected with I / O ports of the acquisition nodes, and the field environment condition is monitored through a high-definition camera; data acquired by the acquisition nodes and the coordination node are uploaded to the coordination node through a wireless ad hoc network, the coordination node transmits the data to the dispatching center through a 5G module, and the dispatching center sends a control signal to the photovoltaic power station through the network.

Description

Technical Field

[0001] The utility model belongs to the field of information technology, and more specifically relates to an intelligent operation and maintenance monitoring device for a photovoltaic power station. Background Technique

[0002] With the large-scale construction of photovoltaic power stations, higher requirements are put forward for the real-time operation monitoring of photovoltaic power stations. Most distributed photovoltaic power stations are located in remote areas, and traditional wired networking monitoring has problems such as difficult wiring, high costs, and high later maintenance costs. In recent years, with the rapid development of wireless communication technology and information technology, whose technical system is established on the basis of the already mature wired remote data transmission, the photovoltaic power station monitoring system based on wireless communication technology has become a new networking form.

[0003] This system combines 5G and ZigBee wireless network technologies to achieve wireless remote monitoring of the photovoltaic power station. Its significance lies in: 1) The environment where the photovoltaic panels are located is complex and the system is large, and it is easy to have faults in individual power generation components. The monitoring system can display the specific location of the fault; 2) The monitoring system can display various specific parameters during the power generation process, which is convenient for finding the best installation position and angle of the power generation components; 3) The monitoring system can record the historical power generation data for future reference, which is beneficial to the future upgrade of the system. Briefly speaking, the functions of the monitoring system are alarm, observation, recording, prediction and control. The traditional photovoltaic power generation monitoring system is composed of a local area network formed by communication methods such as RS485 or Ethernet. Operators monitor the power generation situation in real time in the monitoring room. To ensure the continuous and stable operation of the power generation system, staff need to stay in the monitoring room for a long time. In order to be able to find problems in the photovoltaic power generation system more conveniently and in a more timely manner, and to enable staff to monitor the system situation even after leaving the monitoring room, this system can achieve wireless remote monitoring. In this system, the acquisition node (2) transmits the acquired data to the coordination node. After the coordination node transmits it to the terminal node, the data is directly uploaded to the Internet server through the 5G module. Staff can query the data and control the equipment at any location where Internet connection can be made, with much fewer restrictions compared to previous wireless communications. Summary of the Invention

[0004] This patent proposes an intelligent operation and maintenance monitoring device for a photovoltaic power station, which can remotely collect the light intensity, ambient temperature and humidity, photovoltaic module temperature, wind speed, DC busbar box data, DC distribution box data, inverter data, AC distribution cabinet data and on-site video monitoring data in real time. The system automatically controls the DC busbar box, DC distribution cabinet, inverter and AC distribution cabinet according to the collected parameters, and then adjusts the power generation situation. This system has a simple structure, is easy to operate, and has strong popularization.

[0005] To achieve the above object, the utility model adopts the following technical solutions: The system includes a photovoltaic power station 1, acquisition nodes 2, coordination nodes 3, terminal nodes 4, high-definition cameras 5, 5G modules 6, a server side 7, a PC side 8, a mobile phone side 9, and a TTL-RS485 conversion module 10; several acquisition nodes 2, coordination nodes 3, and 1 terminal node 4 are arranged in the photovoltaic power station 1, and all nodes form a self-healing network. The coordination nodes 3 collect the data of all acquisition nodes 2 and send control commands to the acquisition nodes 2, and drive the DC busbar box, DC power distribution cabinet, inverter, and AC power distribution cabinet through the TTL-RS485 conversion module 10 to adjust the power generation capacity and fault protection of the photovoltaic power station, etc.; the terminal node 4 and the high-definition camera 5 send the collected data to the server side 7 through the 5G module 6 for analysis and processing, and the PC side 8 and the mobile phone side 9 can read the operation status data of the photovoltaic power station from the server side 7 in real time; the server side 7 is bidirectionally communicatively connected to the PC side 8 and the mobile phone side 9, and the server side 7 is bidirectionally communicatively connected to the 5G module 6.

[0006] Preferably, the acquisition nodes 2 and the coordination nodes 3 have the same hardware structure, and both include: a ZigBee main control chip 11, a light intensity acquisition module 12, a temperature and humidity acquisition module 13, a photovoltaic module temperature acquisition module 14, a wind speed acquisition module 15, a DC busbar box data port (16), a DC power distribution cabinet data port (17), an inverter data port (18), an AC power distribution cabinet data port (19), and a power amplification antenna 20; the light intensity acquisition module 12, the temperature and humidity acquisition module 13, the photovoltaic module temperature acquisition module 14, the wind speed acquisition module 15, the DC busbar box data port (16), the DC power distribution cabinet data port (17), the inverter data port (18), and the AC power distribution cabinet data port (19) are connected to the ZigBee main control chip 11 through the TTL-RS485 conversion module (10), and the communication between the acquisition nodes 2 and the coordination nodes 3 is that the ZigBee main control chip 11 performs wireless data exchange through the power amplification antenna (20).

[0007] Preferably, the terminal node 4 includes: a ZigBee main control chip (11), a power amplification antenna (20), and a liquid crystal control screen (21). The power amplification antenna (20) receives the information of the coordination node 3 and is connected to the I / O port of the ZigBee main control chip (11), the liquid crystal control screen (21) is connected to the I / O port of the ZigBee main control chip (11), and the ZigBee main control chip (11) is connected to the 5G module through a TTL-to-RS485 circuit.

[0008] Preferably, the TTL-to-RS485 conversion module 10 includes: an RS485 hub, a MAX485 conversion circuit, which is connected to a light intensity sensor, an environmental temperature and humidity acquisition module, a wind speed acquisition module, a DC busbar box, a DC power distribution cabinet, an inverter, and an AC power distribution cabinet.

[0009] Preferably, the high-definition camera 5 includes: a high-definition camera 5, and the high-definition camera 5 is connected to a 5G module 6.

[0010] Advantages of the present utility model:

[0011] In the photovoltaic power station, ZigBee wireless communication is adopted, which reduces wiring and is easier to maintain and upgrade; it can remotely obtain the environmental parameters of the photovoltaic power station in real time, and realize local automatic control or manual remote control of the DC busbar box, DC power distribution cabinet, inverter, and AC power distribution cabinet; the PC terminal and the mobile phone terminal can determine the operation status of the power station according to the operation and maintenance data and the power station video transmitted back by the high-definition camera; maintenance personnel lacking experience can better manage the photovoltaic power station, truly realizing the remote and intelligent management of the photovoltaic power station; any ordinary PC terminal and mobile phone user can communicate with this system, and it has good popularization; the structure is simple and the operation is convenient, having certain application value. Description of the drawings

[0012] Figure 1 Schematic diagram of the overall system structure of the present utility model;

[0013] Figure 2 Schematic diagram of the node structure of the present utility model;

[0014] Figure 3 Schematic diagram of the node circuit connection principle of the present utility model;

[0015] In the figure: 1 - Photovoltaic power station, 2 - Acquisition node, 3 - Coordination node, 4 - Terminal node, 5 - High-definition camera module, 6 - 5G module, 7 - Server side, 8 - PC side, 9 - Mobile phone side, 10 - TTL-to-RS485 conversion module, 11 - ZigBee main control chip, 12 - Light intensity acquisition module, 13 - Temperature and humidity acquisition module, 14 - Photovoltaic module temperature acquisition module, 15 - Wind speed acquisition module, 16 - DC busbar box data port, 17 - DC power distribution cabinet data port, 18 - Inverter data port, 19 - AC power distribution cabinet data port, 20 - Power amplification antenna, 21 - Liquid crystal control screen. Detailed implementation manners

[0016] In order to make the objectives, technical solutions, and advantages of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below with reference to the drawings to facilitate understanding by those skilled in the art.

[0017] AsFigure 1-2 As shown in the figure, the system includes a photovoltaic power station 1, a collection node 2, a coordination node 3, a terminal node 4, a high-definition camera 5, a 5G module 6, a server side 7, a PC side 8, a mobile phone side 9, and a TTL and RS485 conversion module 10; the terminal node 4 and the high-definition camera 5 send the analyzed and processed data to the server side 7 through the 5G module 6; the PC side 8 and the mobile phone side 9 are in two-way communication connection with the server side 7, and the server side 7 is in two-way communication connection with the 5G module 6.

[0018] Both the collection node 2 and the coordination node 3 include: a ZigBee main control chip 11, a light intensity collection module 12, a temperature and humidity collection module 13, a photovoltaic module temperature collection module 14, a wind speed collection module 15, a DC busbar box data port 16, a DC power distribution cabinet data port 17, an inverter data port 18, an AC power distribution cabinet data port 19, and a power amplification antenna 20. The light intensity collection module 12, the temperature and humidity collection module 13, the photovoltaic module temperature collection module 14, the wind speed collection module 15, the DC busbar box data port 16, the DC power distribution cabinet data port 17, the inverter data port 18, and the AC power distribution cabinet data port 19 are connected to the ZigBee main control chip 11 through the TTL and RS485 conversion module 10, and the ZigBee main control chip 11 is connected through the power amplification antenna 20. The collection node 2 and the coordination node 3 are connected through the power amplification antenna 20.

[0019] The terminal node 4 includes: a ZigBee main control chip 11, a power antenna 20, and a liquid crystal control screen 21; the power amplification antenna 20 receives the information of the coordination node 3 and is connected to the I / O of the ZigBee main control chip 11, the liquid crystal control screen 21 is connected to the I / O port of the ZigBee main control chip 11, the matrix keyboard 20 is connected to the I / O port of the ZigBee main control chip 11, and the ZigBee main control chip 11 is connected to the I / O port of the 5G module 6 through the TTL and RS485 conversion module 10.

[0020] The TTL and RS485 conversion module 10 includes: an RS485 hub and a MAX485 chip. The TTL and RS485 conversion module is connected to each sensor and the DC busbar box, the DC power distribution cabinet, the inverter, and the AC power distribution cabinet.

[0021] As Figure 3As shown in the figure, the TTL to RS485 conversion module 10 is responsible for directly or indirectly connecting multiple high-performance modules, including the light intensity acquisition module 12, the temperature and humidity acquisition module 13, the photovoltaic module temperature acquisition module 14, the wind speed acquisition module 15, the DC busbar box data port 16, the DC power distribution cabinet data port 17, the inverter data port 18, and the AC cabinet data port 19. These sensors and data ports collect data from their respective parts and transmit this data to the ZigBee master chip 11 through the TTL to RS485 conversion module (10).

[0022] The ZigBee master chip 11 serves as a center for data distribution and centralized processing, receiving and processing the data transmitted through the TTL to RS485 conversion module 10, and further aggregating and transmitting the processed data to each acquisition node 2 and coordination node 3 to achieve the monitoring of the photovoltaic power station.

[0023] A number of acquisition nodes 2, coordination nodes 3, and 1 terminal node 4 are deployed in the photovoltaic power station 1. All nodes form a self-healing network. The terminal node 4 aggregates the data of all acquisition nodes 2 (the data of the acquisition nodes 2 is transmitted to the terminal node 4 through the coordination nodes 3) and coordination nodes 3, and then performs comprehensive analysis and processing, and sends control commands to the coordination nodes 3 and acquisition nodes 2 (the control commands of the acquisition nodes 2 are sent through the coordination nodes 3). After passing through the TTL to RS485 conversion module 10, it controls the operation of the DC busbar box, DC power distribution cabinet, inverter, and AC power distribution cabinet.

[0024] The terminal node 4 and the high-definition camera 5 send the analyzed and processed data and on-site monitoring videos to the server side 7 through the 5G module 6. Users can quickly obtain the on-site operation and environmental parameters of the photovoltaic power station from the server side through the PC side 8 or the mobile phone side 9. At the same time, the administrator can send control instructions to the coordination node 4 and the acquisition node 3 through the PC side 8 or the mobile phone side 9; the operation warning of the photovoltaic power station can be realized through the PC side 8 or the mobile phone side 9, and the operation status of the photovoltaic power station can be adjusted in real time.

[0025] The system adopts ZigBee wireless self-organizing network to realize the acquisition and transmission of the operation parameters and environmental conditions of the photovoltaic power station.

[0026] The ZigBee master chip 11 of the system adopts the CC2530 of IT company.

[0027] The 5G module adopts the M7800 5G communication module RM500U of You Yunhe.

[0028] The temperature and humidity sensor adopts the Youyun RS485 temperature and humidity sensor.

[0029] The high-definition camera adopts the Hikvision poe network outdoor camera.

[0030] The illuminance sensor uses the B-RS-L30 illuminance RS485 communication module.

[0031] The temperature sensor uses the KLT-RS485-18B20 temperature sensor module.

[0032] The RS485 hub uses the Lianda Jietong 8-port 485 hub.

[0033] The server relies on the server of the power grid company.

[0034] Example 1:

[0035] According to the actual situation of the photovoltaic power station 1, several acquisition nodes 2, several coordination nodes 3, 1 terminal node 4, 1 high-definition camera 5, and 1 5G module 6 are placed at the site of the photovoltaic power station. The terminal node 4 establishes a wireless ad hoc network, and several acquisition nodes 2 and coordination nodes 3 automatically join the network to complete the wireless networking of ZigBee. When used for the first time, the required threshold parameters, sampling period, data transmission frequency, etc. can be set in the interface through the liquid crystal control screen 21. After the setting is completed, the acquisition nodes 2 and coordination nodes 3 periodically collect the environmental and equipment operation parameters of the photovoltaic power station and transmit them to the terminal node 4. The terminal node 4 can display the environmental and equipment operation-related information on the liquid crystal control screen 21, switch to display the nodes through the liquid crystal screen, and send control commands to the control device. After receiving the regulation command, the acquisition nodes 2 and coordination nodes 3 output control instructions through the I / O port, and drive the DC busbar box, DC power distribution cabinet, inverter, and AC power distribution cabinet to adjust the operation status of the relevant equipment after passing through the TTL-RS485 conversion module. The data comprehensively processed by the terminal node 4 and the on-site monitoring video of the photovoltaic power station collected by the high-definition camera 5 are transmitted to the server side 7 through the 5G module 5. The administrator can remotely monitor the on-site environment of the photovoltaic power station and the operation parameters of the relevant equipment through the PC side 8 and the mobile phone side 9.

[0036] Such as Figure 2As shown in the figure: Both the acquisition node 2 and the coordination node 3 include a TTL-RS485 conversion module 10, a ZigBee main control chip 11, a light intensity acquisition module 12, an environmental temperature and humidity sensor 13, a photovoltaic module temperature acquisition module 14, a wind speed acquisition module 15, a DC busbar box data port 16, a DC power distribution cabinet data port 17, an inverter data port 18, an AC cabinet data port 19, and a power amplification antenna 20. The light intensity acquisition module 12 is installed in a place without high object obstruction. The environmental temperature and humidity sensor 13 is installed in a well-ventilated place closest to the temperature and humidity values of the photovoltaic power station, and the signal output line is connected to the RS485 hub port. The photovoltaic module temperature acquisition module 14 is installed at the most sensitive part of the photovoltaic module temperature change, and the signal output line is connected to the RS485 hub port. The wind speed acquisition module 15 is installed in a place where the photovoltaic panels are relatively concentrated, and the signal output line is connected to the RS485 hub port. The DC busbar box data port 16, the DC power distribution cabinet data port 17, the inverter data port 18, and the AC cabinet data port 19 are respectively connected to the RS485 hub port. The power amplification antenna 20 is connected to the I / O port of the ZigBee main control chip 11.

[0037] The terminal node 4 includes a ZigBee main control chip 11, a power amplification antenna 20, and a liquid crystal control screen 21. The liquid crystal control screen 21 is used for parameter display and adjustment of the acquisition node 2 and the coordination node 3.

[0038] The 5G module 5 is used to periodically transmit the data of the terminal node 4 and the high-definition camera 5 to the server side 7. The administrator can monitor the operation parameters of the relevant equipment of the photovoltaic power station and warn and monitor the on-site situation in real time through the PC side 8 and the mobile phone side 9.

[0039] The high-definition camera module 5 is used to monitor the on-site situation of the photovoltaic power station.

[0040] The TTL-RS485 conversion module 10 includes an RS485 hub and a MAX485 chip. After receiving the control command, the acquisition node outputs a voltage signal through the I / O port, and sends control signals to the DC busbar box, AC / DC power distribution cabinets, inverter, and AC power distribution cabinet through the TTL-RS485 conversion module to realize the adjustment of the operation parameters of the relevant equipment.

[0041] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the protection scope of the utility model.

Claims

1. An intelligent operation and maintenance monitoring device for a photovoltaic power station, characterized in that: It includes a photovoltaic power station (1) with collection nodes (2), coordination nodes (3), terminal nodes (4), high-definition cameras (5) and 5G modules (6) arranged inside; a server side (7), a PC side (8) and a mobile phone side (9) are used for remote monitoring; all ZigBee nodes form a self-healing network. The coordination node (3) is responsible for collecting data from all collection nodes (2), and the terminal node (4) collects data from all collection nodes (2) and coordination nodes (3), and drives control devices to control the photovoltaic power station by sending control commands from the terminal node (4) and the coordination node (3) to the collection nodes (2).

2. The intelligent operation and maintenance monitoring device for a photovoltaic power station according to claim 1, characterized in that The terminal node (4) sends the operation status data of the photovoltaic power station to the server side (7) through the 5G module (6); there is a two-way communication connection between the server side (7) and the 5G module (6).

3. An intelligent operation and maintenance monitoring device for a photovoltaic power station according to claim 1, characterized in that, The collection node (2) and the coordination node (3) include a TTL-RS485 conversion module (10), a ZigBee main control chip (11), a light intensity collection module (12), an ambient temperature and humidity collection module (13), a photovoltaic module temperature collection module (14), a wind speed collection module (15), a DC busbar box data port (16), a DC power distribution cabinet data port (17), an inverter data port (18), an AC power distribution cabinet data port (19); in addition, they are also connected to a power amplification antenna (20).

4. An intelligent operation and maintenance monitoring device for a photovoltaic power station according to claim 1, characterized in that, The terminal node (4) includes a power amplification antenna (20) connected to the ZigBee main control chip (11), and the ZigBee main control chip (11) is also connected to a liquid crystal control screen (21) and a 5G module (6) to achieve two-way data transmission. The high-definition camera (5) is connected to the 5G module (6) to achieve on-site monitoring.

5. An intelligent operation and maintenance monitoring device for a photovoltaic power station according to claim 3, characterized in that, The TTL-RS485 conversion module (10) includes a TTL-to-RS485 circuit and an RS485 hub.

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