Data acquisition terminal of distributed photovoltaic power station

Abstract

The utility model provides a data acquisition terminal of a distributed photovoltaic power station, and relates to the technical field of data acquisition equipment. The data acquisition terminal comprises a terminal body, a processor and a power supply device are arranged in the terminal body, and a network interface group, a serial interface group and a wireless interface are arranged on the terminal body; the network interface group is provided with a high-speed adaptive network card, and the serial interface group is provided with an electrical isolation structure. The data acquisition terminal disclosed by the utility model can solve the problem that unnecessary troubles and workloads are increased for construction and later operation and maintenance due to factors such as tedious configuration, high requirements on technicians, large size, high cost and resource waste of a traditional data acquisition terminal.

Description

Technical Field

[0001] This disclosure relates to the field of data acquisition equipment technology, specifically to a data acquisition terminal for a distributed photovoltaic power station. Background Technology

[0002] As an important component of clean energy, the level of intelligence in the construction and operation and maintenance of distributed photovoltaic power plants is particularly crucial. Data acquisition terminals, as the communication bridge between photovoltaic power plant equipment (inverters, electricity meters, circuit breakers, etc.) and the power grid, directly affect the construction cycle and operational stability of the power plant.

[0003] Typically, the equipment manufacturers and quantities in a project differ. Traditional data acquisition terminals suffer from cumbersome configuration (requiring implementation engineers to configure them one by one on-site according to the equipment manufacturers and quantities), high technical requirements, large size, high cost, and waste of resources, which adds unnecessary trouble and workload to construction and subsequent operation and maintenance.

[0004] To address the aforementioned issues, a data acquisition terminal that is easy to configure, compact, low-cost, and high-performance has been specifically designed for distributed photovoltaic power stations, while also reducing the technical requirements for commissioning personnel. Utility Model Content

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a data acquisition terminal for distributed photovoltaic power stations. This data acquisition terminal can solve the problems that traditional data acquisition terminals cause unnecessary trouble and workload to construction and subsequent operation and maintenance due to factors such as complicated configuration, high requirements for technical personnel, large size, high cost, and waste of resources.

[0006] According to a first aspect of the present disclosure, a data acquisition terminal for a distributed photovoltaic power station is provided. The data acquisition terminal includes a terminal body, which is internally provided with a processor and a power supply device. The terminal body is provided with a network interface group, a serial interface group and a wireless interface.

[0007] The network interface group is equipped with a high-speed adaptive network card, and the serial interface group is equipped with an electrical isolation structure.

[0008] In one embodiment, the network interface group includes a first network interface and a second network interface, and both the first network interface and the second network interface are equipped with the high-speed adaptive network card;

[0009] The first network interface is connected to the main station, and the second network interface is connected to the local debugging device.

[0010] In one embodiment, the serial interface group includes a first serial interface, a second serial interface, a third serial interface, and a fourth serial interface, and the electrical isolation structure is provided on the first serial interface, the second serial interface, the third serial interface, and the fourth serial interface.

[0011] The first serial interface is connected to the energy meter, the second serial interface is connected to the circuit breaker, the third serial interface is connected to the inverter, and the fourth serial interface is a spare expansion port.

[0012] In one embodiment, each of the high-speed adaptive network cards is protected against lightning by setting a dual-level lightning and electrostatic discharge protection structure.

[0013] In one embodiment, each of the electrical isolation structures is protected against lightning by a three-level lightning protection and anti-static structure.

[0014] In one embodiment, the bottom of the terminal body is provided with a hanging ear, and the perimeter of the terminal body is provided with a card holder.

[0015] In one embodiment, the terminal body is further provided with an indicator light group, function buttons, a USB interface, a debugging port, a terminal block power input port, an antenna SMA interface, and a SIM card interface.

[0016] In one embodiment, the indicator light group includes a system indicator light, a power indicator light, a wireless module indicator light, and a serial port transceiver indicator light.

[0017] In one embodiment, the processor includes a base module, a downlink module, an uplink module, and a debug module; wherein,

[0018] The basic modules include a project configuration management module, a network management module, a data pool management module, and a public interface management module;

[0019] The downlink module includes a downlink channel management module, a downlink device management module, a data acquisition module, and a communication status management module;

[0020] The uplink module includes an uplink channel management module, an uplink point table management module, and a data processing module;

[0021] The debugging module includes an uplink channel debugging module, a downlink channel debugging module, and a debugging log module.

[0022] In one embodiment, the processor has a built-in inverter data acquisition template, an energy meter data acquisition template, and a circuit breaker data acquisition template; and,

[0023] The inverter data acquisition template has a pre-set inverter configuration file, the electricity meter data acquisition template has a pre-set electricity meter configuration file, and the circuit breaker data acquisition template has a pre-set circuit breaker configuration file.

[0024] This disclosure provides a data acquisition terminal for a distributed photovoltaic power station. It is specifically designed for distributed photovoltaic power stations and features convenient configuration (customization), small size, low cost, and high performance. At the same time, it reduces the technical requirements for commissioning personnel and solves the problems of traditional data acquisition terminals, which have added unnecessary trouble and workload to construction and subsequent operation and maintenance due to factors such as complicated configuration, high technical requirements, large size, high cost, and waste of resources. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0026] Figure 1 This is a schematic diagram of the structure of a data acquisition terminal for a distributed photovoltaic power station provided in an embodiment of this disclosure.

[0027] Figure 2 This is a schematic diagram of the processor in a data acquisition terminal of a distributed photovoltaic power station provided in an embodiment of this disclosure.

[0028] In the diagram, 1-terminal body, 11-first network interface, 12-second network interface, 13-first serial interface, 14-second serial interface, 15-third serial interface, 16-fourth serial interface, 17-ear hook, 18-card slot, 19-function button, 20-USB interface, 21-debugging port, 22-terminal power input port, 23-antenna SMA interface, 24-SIM card interface, 25-system indicator light, 26-power indicator light, 27-wireless module indicator light, 28-serial transceiver indicator light. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0030] Figure 1 This is a schematic diagram of the structure of a data acquisition terminal for a distributed photovoltaic power station provided in an embodiment of this disclosure. Figure 1As shown, the data acquisition terminal includes a terminal body 1, which contains a processor and a power supply device. The terminal body 1 is equipped with a network interface group, a serial interface group, and a wireless interface. The network interface group is equipped with a high-speed adaptive network card, and the serial interface group is equipped with an electrical isolation structure.

[0031] This disclosure provides a data acquisition terminal for a distributed photovoltaic power station. It is specifically designed for distributed photovoltaic power stations and features convenient configuration (customization), small size, low cost, and high performance. At the same time, it reduces the technical requirements for commissioning personnel and solves the problems of traditional data acquisition terminals, which have added unnecessary trouble and workload to construction and subsequent operation and maintenance due to factors such as complicated configuration, high technical requirements, large size, high cost, and waste of resources.

[0032] like Figure 1 As shown, the network interface group includes a first network interface 11 and a second network interface 12, both of which are equipped with the high-speed adaptive network card; the first network interface 11 is connected to the main station, and the second network interface 12 is connected to the local debugging device.

[0033] like Figure 1 As shown, the serial interface group includes a first serial interface 13, a second serial interface 14, a third serial interface 15, and a fourth serial interface. The first serial interface 13, the second serial interface 14, the third serial interface 15, and the fourth serial interface 14 are all provided with the electrical isolation structure. The first serial interface 13 is connected to the energy meter, the second serial interface 14 is connected to the circuit breaker, the third serial interface 15 is connected to the inverter, and the fourth serial interface 16 is a spare expansion port.

[0034] For example, the first serial interface 13 is a COM1 RS485 interface, the second serial interface 14 is a COM2 RS485 interface, the third serial interface 15 is a COM3 RS485 / RS232 interface, and the fourth serial interface 16 is a COM4 RS485 / RS232 interface.

[0035] Preferably, each of the high-speed adaptive network cards is protected against lightning by a dual-level lightning protection and anti-static structure; and each of the electrical isolation structures is protected against lightning by a triple-level lightning protection and anti-static structure.

[0036] like Figure 1 As shown, the bottom of the terminal body 1 is provided with a hanging ear 17, and the perimeter of the terminal body 1 is provided with a card holder 18. The hanging ear 17 can be used to install the terminal body 1 in the position to be installed, and the card holder 18 is used to fix the terminal body 1 in the target mounting slot.

[0037] like Figure 1 As shown, the terminal body 1 is also equipped with an indicator light group, function buttons 19, USB interface 20, debugging port 21, terminal block power input port 22, antenna SMA interface 23 and SIM card interface 24.

[0038] Preferably, such as Figure 1 As shown, the indicator light group includes a system indicator light 25, a power indicator light 26, a wireless module indicator light 27, and a serial port transceiver indicator light 28.

[0039] Figure 2 This is a schematic diagram of the processor in a data acquisition terminal of a distributed photovoltaic power station provided in an embodiment of this disclosure. Figure 2 As shown, the processor includes a basic module, a downlink module, an uplink module, and a debugging module; wherein, the basic module includes a project configuration management module, a network management module, a data pool management module, and a public interface management module; the downlink module includes a downlink channel management module, a downlink device management module, a data acquisition module, and a communication status management module; the uplink module includes an uplink channel management module, an uplink point table management module, and a data processing module; and the debugging module includes an uplink channel debugging module, a downlink channel debugging module, and a debugging log module.

[0040] In one embodiment, the processor has a built-in inverter data acquisition template, an energy meter data acquisition template, and a circuit breaker data acquisition template; and the inverter data acquisition template has a pre-set inverter configuration file, the energy meter data acquisition template has a pre-set energy meter configuration file, and the circuit breaker data acquisition template has a pre-set circuit breaker configuration file.

[0041] In this embodiment, the data acquisition terminal configuration tool for the distributed photovoltaic power station has pre-set data acquisition templates for inverters, electricity meters, and circuit breakers from various manufacturers. It also pre-sets various configuration files for different numbers of inverters, electricity meters, and circuit breakers. Commissioning personnel only need to open the project configuration file and modify the corresponding device addresses, greatly improving the ease of configuration and reducing the technical requirements for commissioning personnel. The specific steps are as follows:

[0042] (1) Open the configuration file corresponding to the number of inverters in the configuration tool;

[0043] (2) Modify the network port IP information for communication with the main station in the basic configuration;

[0044] (3) Modify the address of the energy meter on the COM1 port of the downlink channel;

[0045] (4) Modify the circuit breaker address on the COM2 port of the downlink channel;

[0046] (5) Modify the inverter address on the COM3 port of the downlink channel;

[0047] (6) Save the current configuration information and download it to the data acquisition terminal;

[0048] (7) Debug the uplink and downlink channel data.

[0049] Convenient debugging: The configuration tool allows for intuitive viewing of data and communication messages from the electricity meter, circuit breaker, and inverter, as well as the interaction information between the data acquisition terminal and the power grid.

[0050] It should be noted that in this embodiment, the wireless interface supports 4G full network compatibility, the power supply is an ultra-wide voltage AC / DC power supply, and the power supply is protected against electrostatic discharge, overcurrent, and reverse connection. The terminal body adopts a whole board and modular design, with full industrial wiring and a 10-layer PCB design. Fully automated machine surface mounting is used in the manufacturing process to effectively ensure the consistency and reliability of product quality. The design size of the terminal body is 28.8mm×117mm×28mm (L×W×H) including the ear hook. The power consumption of the data acquisition terminal is: maximum average power consumption ≤6W, instantaneous power consumption up to 10W.

[0051] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be pre-installed in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0052] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0053] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A data acquisition terminal for a distributed photovoltaic power station, characterized in that, The data acquisition terminal includes a terminal body, which contains a processor and a power supply device. The terminal body is equipped with a network interface group, a serial interface group and a wireless interface. The network interface group is equipped with a high-speed adaptive network card, and the serial interface group is equipped with an electrical isolation structure.

2. The data acquisition terminal according to claim 1, characterized in that, The network interface group includes a first network interface and a second network interface, and the high-speed adaptive network card is provided on both the first network interface and the second network interface. The first network interface is connected to the main station, and the second network interface is connected to the local debugging device.

3. The data acquisition terminal according to claim 1, characterized in that, The serial interface group includes a first serial interface, a second serial interface, a third serial interface, and a fourth serial interface, and the first serial interface, the second serial interface, the third serial interface, and the fourth serial interface are all provided with the electrical isolation structure; The first serial interface is connected to the energy meter, the second serial interface is connected to the circuit breaker, the third serial interface is connected to the inverter, and the fourth serial interface is a spare expansion port.

4. The data acquisition terminal according to claim 2, characterized in that, Each of the aforementioned high-speed adaptive network cards is protected against lightning strikes by a dual-level lightning and electrostatic discharge protection structure.

5. The data acquisition terminal according to claim 3, characterized in that, Each of the aforementioned electrical isolation structures is protected against lightning strikes by a three-level lightning protection and anti-static structure.

6. The data acquisition terminal according to any one of claims 1 to 5, characterized in that, The bottom of the terminal body is provided with a hanging ear, and the four sides of the terminal body are provided with card slots.

7. The data acquisition terminal according to claim 6, characterized in that, The terminal body is also equipped with indicator lights, function buttons, USB interface, debugging port, terminal block power input port, antenna SMA interface and SIM card interface.

8. The data acquisition terminal according to claim 7, characterized in that, The indicator light group includes system indicator light, power indicator light, wireless module indicator light, and serial port transceiver indicator light.

9. The data acquisition terminal according to any one of claims 1 to 5, characterized in that, The processor includes a basic module, a downlink module, an uplink module, and a debugging module; wherein, The basic modules include a project configuration management module, a network management module, a data pool management module, and a public interface management module; The downlink module includes a downlink channel management module, a downlink device management module, a data acquisition module, and a communication status management module; The uplink module includes an uplink channel management module, an uplink point table management module, and a data processing module; The debugging module includes an uplink channel debugging module, a downlink channel debugging module, and a debugging log module.

10. The data acquisition terminal according to any one of claims 1 to 5, characterized in that, The processor has built-in inverter data acquisition templates, energy meter data acquisition templates, and circuit breaker data acquisition templates; and... The inverter data acquisition template has a pre-set inverter configuration file, the electricity meter data acquisition template has a pre-set electricity meter configuration file, and the circuit breaker data acquisition template has a pre-set circuit breaker configuration file.

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