Distribution network automation feeder terminal

Abstract

The utility model provides a distribution network automation feeder terminal, and relates to the technical field of power distribution equipment. The distribution network automation feeder terminal comprises a box body, wherein a battery module is arranged in the box body; the inner layer door is rotatably connected with the outer side of the box body through an inner layer support, and a display and operation module is arranged on the inner layer door; the outer layer door is rotatably connected with the inner side of the box body through an outer layer support, and the outer layer door and the inner layer door are arranged on the same side of the box body. According to the distribution network automation feeder terminal provided by the embodiment of the utility model, the outer-layer door and the inner-layer door are arranged, the outer-layer door is used for opening or closing the box body, operation can be carried out on the inner-layer door by opening the outer-layer door and exposing the inner-layer door, and the outer-layer door can play a role in protecting the inner-layer door. The display and operation modules are arranged on the inner layer door, so that a user can check the running state of the feeder terminal through the modules and perform operation such as parameter setting.

Description

Technical Field

[0001] This invention relates to the field of power distribution equipment technology, and in particular to a power distribution network automation feeder terminal. Background Technology

[0002] A feeder terminal unit (FTU) is a switch monitoring device installed next to a feeder switch. It is mainly used for monitoring and controlling equipment such as transformers, circuit breakers, reclosers, sectionalizers, pole-mounted load switches, ring main units, voltage regulators, and reactive power compensation capacitors in power distribution systems.

[0003] The FTU can collect real-time data on feeder switch status, current, voltage, and other parameters, and transmit this data to the distribution master station or substation system via a communication network. The FTU can also identify feeder faults, such as short circuits and grounding faults, and use algorithms to locate the faults, providing strong support for rapid power restoration. The FTU can also receive control commands from the distribution master station or substation system to remotely operate the feeder switches, achieving automated control of the distribution network.

[0004] Currently, commonly used distribution network feeder terminals are often installed on outdoor utility poles, which are directly exposed to the elements without proper protection and are inconvenient to operate. Summary of the Invention

[0005] To address the technical problems of existing power distribution network feeder terminals, which are commonly used on outdoor utility poles, are directly exposed to the elements without adequate protection, and are inconvenient to operate, this invention provides a power distribution network automation feeder terminal. The technical solution is as follows:

[0006] A distribution network automation feeder terminal is provided, the terminal comprising:

[0007] The housing contains a battery module.

[0008] The inner door is rotatably connected to the outer side of the box body via an inner support, and the inner door is equipped with a display and operation module.

[0009] An outer door is rotatably connected to the inner side of the box via an outer support, and the outer door and the inner door are located on the same side of the box.

[0010] Optionally, a support frame is provided outside the opening of the box body;

[0011] The outer support includes a slide groove and a connecting rod. The slide groove is disposed on the outside of the support frame. The first end of the connecting rod is connected to the outer door, and the second end of the connecting rod is slidably connected to the slide groove.

[0012] Optionally, the display and operation module includes: a display screen, indicator lights, function buttons, and a circuit breaker pressure plate.

[0013] Optionally, the display and operation module also includes a power switch and a card slot interface.

[0014] Optionally, the housing is provided with an installation plate, and the terminal further includes a main control board module, which is mounted on the installation plate and includes a motherboard, a measurement board, and a core board.

[0015] Optionally, the main control board module further includes a residual pressure board.

[0016] Optionally, the battery module includes a battery bracket and a backup battery module. The battery bracket is disposed inside the back panel of the housing, and the backup battery module and the battery bracket are detachably connected.

[0017] Optionally, it also includes: an interface mounting plate, which is disposed on the bottom plate of the enclosure, and the interface mounting plate is provided with a network port connector, a power supply voltage connector, a current interface connector and a control signal connector.

[0018] Optionally, the bottom plate of the enclosure is equipped with a waterproof lock, indicator light, and grounding post.

[0019] Optionally, it also includes an antenna bracket, which is disposed at least at one location on the bottom plate and side plate of the enclosure.

[0020] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following:

[0021] The power distribution automation feeder terminal provided in this embodiment of the utility model features an outer door and an inner door. The outer door is used to open or close the housing, and opening the outer door exposes the inner door, allowing operation on the inner door. The outer door also protects the inner door. A display and operation module is provided on the inner door, allowing users to view the feeder terminal's operating status and perform parameter settings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1This is one of the structural schematic diagrams of a distribution network automation feeder terminal provided in an embodiment of the present invention;

[0024] Figure 2 This is a second schematic diagram of the structure of a distribution network automation feeder terminal provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of a distribution network automation feeder terminal provided in an embodiment of the present invention;

[0026] Figure 4 This is a bottom view of a distribution network automation feeder terminal provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the left-side structure of a distribution network automation feeder terminal provided in an embodiment of the present invention.

[0028] Figure label:

[0029] 1. Housing; 11. Battery module; 12. Support frame; 13. Waterproof lock; 14. Indicator light; 15. Grounding post;

[0030] 2. Inner door; 21. Inner support frame; 22. Display and operation module; 221. Display screen; 222. Indicator lights; 223. Function buttons; 224. Opening and closing hard pressure plate; 225. Power switch; 226. Card slot interface;

[0031] 3. Outer door; 31. Outer support; 311. Slide rail; 312. Connecting rod;

[0032] 4. Main control board module;

[0033] 5. Interface mounting plate; 51. Network port connector; 52. Power supply voltage connector; 53. Current interface connector; 54. Control signal connector;

[0034] 61. First antenna support; 62. Second antenna support. Detailed Implementation

[0035] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0036] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0037] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0038] This invention provides a power distribution network automation feeder terminal. Figure 1 This is one of the structural schematic diagrams of a distribution network automation feeder terminal provided in an embodiment of the present invention; Figure 2 This is the second structural schematic diagram of a distribution network automation feeder terminal provided in an embodiment of the present invention. Please refer to... Figures 1 to 2 The terminal includes: a housing 1, an inner door 2, and an outer door 3.

[0039] The housing 1 houses a battery module 11 to protect internal equipment from external environmental influences. The battery module 11 provides a continuous and stable power supply to the feeder terminal, ensuring its normal operation under various conditions. The battery module 11 typically uses high-performance lithium or lead-acid batteries, characterized by long lifespan and high energy density.

[0040] Specifically, the inner door 2 is rotatably connected to the outer side of the housing 1 via an inner bracket 21, facilitating easy opening and closing by the user. The inner door 2 is equipped with a display and operation module 22, allowing users to view the operating status of the feeder terminal and perform parameter settings. The display and operation module 22 displays various information about the feeder terminal, such as operating parameters like voltage, current, and power, as well as fault alarm information. The display and operation module 22 may also include various buttons and knobs, allowing users to perform parameter settings and function selections on the feeder terminal.

[0041] The outer door 3 is rotatably connected to the inner side of the box 1 by the outer bracket 31, which makes it convenient for users to open and close.

[0042] In other words, both the inner door 2 and the outer door 3 are rotatably connected to the housing 1, and the outer door 3 and the inner door 2 are located on the same side of the housing 1. This design not only facilitates the user's opening and closing of the feeder terminal but also protects the internal display and operation module 22 from external interference. The outer door 3 is used to open or close the housing 1. By opening the outer door 3, the inner door 2 is exposed, and operations can be performed on the inner door 2. Therefore, the outer door 3 can protect the inner door 2 and prevent dust, moisture, etc. from entering the housing 1 and affecting the normal operation of the feeder terminal.

[0043] The power distribution automation feeder terminal provided in this embodiment of the utility model features an outer door 3 and an inner door 2. The outer door 3 is used to open or close the housing 1. By opening the outer door 3, the inner door 2 is exposed, allowing operation on the inner door 2. The outer door 3 also protects the inner door 2. A display and operation module 22 is provided on the inner door 2, allowing users to view the operating status of the feeder terminal and perform parameter settings.

[0044] In one embodiment of this utility model, a support frame 12 is provided outside the opening of the box 1 to provide support and fixing points for the outer support 31.

[0045] The outer support 31 includes a slide groove 311 and a connecting rod 312. The slide groove 311 is located on the outside of the support frame 12. The first end of the connecting rod 312 is connected to the outer door 3, and the second end of the connecting rod 312 is slidably connected to the slide groove 311. The slide groove 311 provides a slidable track for the second end of the connecting rod 312, allowing the outer door 3 to open and close smoothly.

[0046] When the outer door 3 needs to be opened, the second end of the connecting rod 312 slides in the slide groove 311, causing the outer door 3 to move along the outside of the support frame 12, thereby exposing the opening of the box 1. When the outer door 3 needs to be closed, the second end of the connecting rod 312 slides in the slide groove 311 again, pulling the outer door 3 back to its original position and closing the opening of the box 1.

[0047] Furthermore, the slide 311 and connecting rod 312 are configured as limiting structures, with the outer door 3 opening to a maximum angle of 135°. The positioning support limits the outer door 3, preventing it from moving freely during maintenance.

[0048] Figure 3 This is a schematic diagram of the internal structure of a distribution network automation feeder terminal provided in an embodiment of the present invention. Please refer to [the diagram]. Figure 3 In one embodiment of this utility model, the display and operation module 22 includes: a display screen 221, an indicator light 222, function buttons 223, and a circuit breaker pressure plate 224.

[0049] Specifically, the display screen 221 is the core part of the user interface, used to display various information, such as device status, operation prompts, data monitoring, etc. The display screen 221 can be a liquid crystal display screen 221 (LCD), an organic light-emitting diode display screen 221 (OLED), or other types of display technology; this embodiment does not limit this.

[0050] Indicator lights 222 are typically used to provide intuitive visual feedback on the status of equipment. They can display different colors (such as red, green, and yellow) or flashing patterns to indicate different states of the equipment, such as normal operation, warning, or malfunction.

[0051] Function keys 223 are used to allow users to input commands or select specific operating modes. They can be physical buttons, virtual buttons on a touchscreen, or other forms of input devices such as knobs or joysticks.

[0052] The opening and closing hard switch 224 is a physical switch used to electrically implement the locking or unlocking of opening and closing controls. They are typically used to provide an additional layer of safety to prevent accidental triggering of opening and closing operations when they should not be performed.

[0053] Furthermore, in one embodiment of this utility model, the display and operation module 22 also includes a power switch 225 and a card slot interface 226.

[0054] By operating the power switch 225, the user can easily turn the entire module on or off, thereby saving energy. The card slot interface 226 is typically used to insert various memory cards or communication modules, such as SIM cards (for 4G communication), SD cards (for data storage), etc. In embodiments of this invention, the card slot interface 226 may be specifically used to install a SIM card for a 4G module to achieve remote communication and data transmission functions.

[0055] In one embodiment of this utility model, a mounting plate is provided inside the housing 1, and the terminal further includes a main control board module 4, which is mounted on the mounting plate and includes a motherboard, a measurement board, and a core board.

[0056] The mounting plate is a fixed platform inside the enclosure 1, designed to support and secure various electronic components and circuit boards. The main control board module 4 serves as the control center of the entire terminal system, integrating multiple functions such as data processing, instruction execution, and inter-module communication.

[0057] The motherboard forms the foundation of the main control board module 4, providing robust support and necessary electrical connections for the measurement board and core board. It integrates numerous electronic components, interfaces, and circuits, providing a solid hardware foundation for the system's efficient operation.

[0058] The measurement board focuses on data acquisition and processing, and may integrate various sensors, analog-to-digital converters (ADCs), and other components to monitor key parameters such as current, voltage, and temperature in real time. This precise data provides the necessary input to the core board, supporting its efficient data analysis and processing.

[0059] The core board is the heart of the entire main control board module 4, integrating key hardware such as a high-performance processor and large-capacity memory. It is responsible for receiving data from the measurement board, executing complex algorithms and logical operations, and ultimately controlling the operation of the entire system. The performance of the core board directly affects the response speed and processing power of the entire terminal.

[0060] Furthermore, the core board module also has a reserved mounting position for a BDCU board (Line Data Collection Unit, which collects SGS data from wireless current sensors), allowing for easy addition or removal of functional circuits according to project requirements. Furthermore, the circuit design of the main control board module 4 is based on a shielded FTU circuit, with redesigned circuit partitions and new functional circuits added according to the functional requirements of deeply integrated FTU users; a PMU board 232 communication interface and a remote control / signaling interface are designed for communication between the main board and the PMU board.

[0061] Furthermore, power consumption can be reduced by designing the circuit.

[0062] Furthermore, the circuit is also compatible with electromagnetic, electronic, and deeply integrated FTU circuits, and can be expanded to an FXU PMU.

[0063] Furthermore, in one embodiment provided by this utility model, the main control board module 4 also includes a residual pressure plate.

[0064] Residual voltage boards are primarily used to monitor and address residual voltage issues in power systems. Residual voltage refers to the voltage that remains across a switch (such as a circuit breaker) after it has been disconnected. Residual voltage boards can monitor these voltage values ​​in real time and take necessary measures to protect the system from damage.

[0065] Specifically, the residual pressure plate may have the following functions:

[0066] Residual pressure monitoring: Real-time monitoring of residual pressure values ​​in the system via built-in sensors or measurement circuits.

[0067] Protection mechanism: When the residual voltage exceeds the preset threshold, the residual voltage board can trigger a protection mechanism, such as cutting off the power or issuing an alarm, to prevent system damage.

[0068] Fault diagnosis: By analyzing residual pressure data, the residual pressure board can also help diagnose faults or abnormalities in the system, providing valuable reference information for maintenance personnel.

[0069] In main control board module 4, the residual pressure board works closely with other components (such as the measurement board, core board, etc.) to jointly realize the system's control functions. For example:

[0070] Collaboration with the measurement board: The measurement board is responsible for collecting various data from the system, including current and voltage. The residual voltage board focuses on monitoring residual voltage data and transmitting this data to the core board for processing.

[0071] Collaboration with the core board: The core board is the control center of the system, responsible for receiving data from various components and executing corresponding algorithms and logical operations. After the residual voltage board transmits the monitored residual voltage data to the core board, the core board will make judgments and processes according to preset algorithms and rules.

[0072] Specifically, the main control board module 4 circuit can be configured as follows:

[0073] ① Circuit board is divided into the following components: core board, main board, analog signal measurement board, LCD screen adapter board, key display board, power module, residual voltage board, power voltage measurement and switching board, indicator board and PMU board (BDCU board can also be expanded).

[0074] ② Core Board: The core board circuitry includes a main control chip, FLASH chip, SRAM, RTC circuit, encryption chip, 24C02 memory, temperature measurement circuit, and parallel port driver circuit. The core board's interfaces include I2C communication, SPI communication, UART communication, parallel port communication, and I / O interfaces.

[0075] ③ Mainboard: The mainboard circuitry includes the core board interface, system power supply circuit, switch remote control circuit, switch remote signaling circuit, power module remote control and signaling circuit, energy storage current, operating current, battery voltage, and operating voltage measurement circuits, two network communication circuits (communication port and maintenance port), 4G module serial communication, PMU communication serial port, one reserved RS-232 communication interface and one reserved serial communication interface (the reserved communication interface is extended from the core board's SPI3 via the WK2132 chip), and external indicator light driver circuitry. The mainboard is connected to the keypad display board via a soft connection.

[0076] The motherboard and the analog signal sampling board are connected via a flexible flat cable, which provides 5V power to the analog signal sampling board. The sampling board sends voltage and current measurement signals to the AD7616 interface on the motherboard via the flexible flat cable. The motherboard also includes a line loss module driver circuit, a frequency measurement circuit, GPS, Bluetooth circuitry, and a communication interface circuit for the PMU board.

[0077] ④ Data Acquisition Board: The data acquisition board includes 1Ua / 1Ub / 1Uc; 2Ua / 2Ub / 2Uc; Ia / Ib / Ic; and U0 / I0 measurement circuits. Among them, 1Ua / 1Uc / U0 are compatible with electromagnetic FTU voltage measurement inputs; Ia / Ib / Ic / I0 are compatible with electromagnetic FTU current measurement inputs. The PCB packages of electromagnetic data acquisition transformers and electronic and deeply integrated data acquisition transformers are designed for compatibility.

[0078] The voltage and current measurement signals output by the current transformer are sent to the operational amplifier follower circuit. The follower circuit splits each measurement signal into two mutually independent measurement signals, which are then sent to the main board and the PMU board respectively via flexible flat cables.

[0079] The acquisition board also includes a ±15V power supply circuit. The 5V power supply from the motherboard is sent to the Mornsun A0515S-1WR3 power module, and the ±15V power output from the module provides operating power for the op-amps on the board.

[0080] ⑤ Key Control Display Board: The key control display board includes an LCD screen adapter board, a 4G module communication interface (DB9 port), a maintenance serial port interface, a maintenance network port interface, remote and local switches, fault enable / disable switches, centralized and local switches, and LCD screen function buttons 223. As needed, in addition to the six standardized indicator lights—"Power Supply," "Communication Status," "Self-Test Fault," "Routine Protection," "Local FA," and "Centralized FA"—eight new indicator lights are added: "Separate Position Remote Signaling," "Closed Position Remote Signaling," "Energy Storage Remote Signaling," "Interlock," "Operation," "Overcurrent Alarm," "Zero Current Alarm," and "Grounding Alarm."

[0081] ⑥ The power module structure is compatible with both electromagnetic and capacitor-powered power modules. The power modules are purchased externally, and the motherboard power and control interfaces are designed for functional compatibility, allowing for the selection of different models and manufacturers of power modules based on project requirements.

[0082] ⑦ Residual pressure plate: The residual pressure plate interface is compatible with electromagnetic FTU, electronic FTU and deep integration FTU.

[0083] ⑧ Power supply voltage measurement switching board: It adopts an independent module design, and the circuit is divided into an AC 220V voltage measurement circuit and a two-way power supply switching circuit (electromagnetic type).

[0084] The circuit board packaging adopts a compatible structure of capacitor power tapping measurement board (deep integration) and power supply voltage measurement switching board (electromagnetic type);

[0085] The power supply voltage, after passing through the current transformer (the capacitor power supply of the deeply integrated FTU uses an isolated operational amplifier to measure the voltage input), is sent to the voltage follower. The follower splits the signal into two independent measurement signals, which are then sent to the signal interfaces with the motherboard and the PMU board. Simultaneously, the motherboard sends 5V power to the power supply voltage measurement switching board via a flexible flat cable. The DC chip converts +5V to -5V, providing ±5V power to the voltage follower.

[0086] It is evident that the terminal is aesthetically pleasing, easy to assemble, convenient to wire, and structurally compatible with electromagnetic, electronic, and deeply integrated structures.

[0087] In one embodiment of this utility model, the battery module 11 includes a battery bracket and a spare battery module. The battery bracket is disposed inside the back panel of the housing 1, and the spare battery module and the battery bracket are detachably connected.

[0088] The battery bracket is used to fix and support the spare battery module, ensuring that the battery module is firmly positioned inside the housing 1 and will not move or be damaged during transportation or use.

[0089] The backup battery module is a replaceable or rechargeable battery unit used to provide power when the main power source is depleted. The backup battery module is detachably connected to the battery bracket, allowing users or maintenance personnel to easily remove the battery module from the bracket for replacement or charging without disassembling the entire battery module 11 or housing 1. This design improves the flexibility and maintainability of the battery module 11.

[0090] The backup battery module and the battery bracket can be detachably connected by means of mechanical latches, slide rails, screws, etc., and this embodiment does not limit this.

[0091] Furthermore, the battery mounting is compatible with the structural dimensions of lead-acid 7AH batteries, lead-acid 12AH batteries, lithium iron phosphate batteries below 30AH / 25.6V, and supercapacitor module structures.

[0092] In one embodiment of this utility model, the feeder terminal further includes an interface mounting plate 5, which is disposed on the bottom plate of the housing 1. The interface mounting plate 5 is provided with a network port connector 51, a power supply voltage connector 52, a current interface connector 53, and a control signal connector 54.

[0093] The base plate is typically made of metal, providing excellent heat dissipation and electromagnetic shielding. It also features screw holes and brackets for fixing and mounting various components, ensuring that each part can be securely installed inside the enclosure 1.

[0094] The interface mounting plate 5 features various types of connectors to meet diverse connection needs between the feeder terminal and external devices. Specifically, the Ethernet connector 51 connects the feeder terminal to Ethernet devices. Through the Ethernet connector 51, the feeder terminal can access a local area network (LAN) or wide area network (WAN) for remote data transmission and sharing. The Ethernet connector 51 typically uses the RJ45 interface standard, supporting high-speed data transmission and stable network connectivity. The power supply connector 52 provides the power input for the feeder terminal. This connector allows the feeder terminal to connect to an external power source, providing a stable power supply to its internal electronic components. The power supply connector 52 typically uses standardized power interfaces, such as DC or AC sockets, to accommodate different power input requirements. The current connector 53 connects the feeder terminal to external current measurement devices or loads. Through this connector, the feeder terminal can monitor and record current data in real time, providing crucial reference information for power system monitoring and management. The current connector 53 typically supports high-current transmission and precise current measurement. The control signal connector 54 is used for connection between the feeder terminal and external control equipment. Through this connector, the feeder terminal can receive external control signals, enabling remote control and adjustment of internal electronic components. The control signal connector 54 typically uses standardized signal interfaces, such as RS-232, RS-485, or CAN bus, to accommodate different control signal transmission requirements.

[0095] The aircraft connector installation is compatible with electromagnetic standardized interfaces, electronic standardized interfaces, and deeply integrates with user requirements for aircraft connectors.

[0096] Figure 4 This is a bottom view of a distribution network automation feeder terminal provided in an embodiment of the present invention; Figure 5 This is a left-side structural schematic diagram of a distribution network automation feeder terminal provided in an embodiment of the present invention. Please refer to... Figures 4 to 5 In one embodiment of this utility model, a waterproof lock head 13, an indicator light 14, and a grounding post 15 are provided on the bottom plate of the box 1.

[0097] The waterproof lock 13 prevents moisture or other liquids from seeping into the cabinet 1, thereby protecting the electronic equipment, circuits or other sensitive components inside the cabinet 1 from moisture damage.

[0098] Indicator lights 14 provide users with intuitive status feedback. They can display the power status, operating status, or other key information of the enclosure 1. For example, when the enclosure 1 is powered normally, indicator light 14 may light up green; if the enclosure 1 malfunctions or requires maintenance, indicator light 14 may flash or turn red. Through indicator lights 14, users can quickly identify the current status of the enclosure 1, facilitating timely action.

[0099] In electrical systems, grounding is a method of connecting the metal casing or other conductive parts of electrical equipment to the earth to prevent electric shock accidents caused by leakage or static electricity. Grounding post 15 provides a reliable grounding connection point, ensuring that the enclosure 1 is electrically connected to the earth, thereby protecting the safety of personnel and equipment.

[0100] In one embodiment of the present invention, the feeder terminal further includes an antenna bracket, which is disposed at least at one location on the bottom plate and side plate of the housing 1.

[0101] The antenna bracket can be mounted on the base plate; please refer to [link / reference]. Figure 4 The first antenna support 61 is located at the bottom of the housing 1, close to the ground. This layout may be suitable for scenarios requiring a lower antenna height, or when the top space of the housing 1 is limited.

[0102] To mount the antenna bracket on the side panel, please refer to [link / reference]. Figure 5 The second antenna bracket 62 allows the antenna to extend outwards or upwards, potentially resulting in better signal reception and transmission. This configuration is suitable for scenarios requiring a higher antenna height or where it is desirable to keep the antenna as far away from interference sources as possible.

[0103] In some cases, users can choose to install antenna brackets on both the base plate and the side plates to provide greater installation flexibility and signal coverage.

[0104] Specifically, during the research on distribution network protection and control technology based on wide-area synchronization and longitudinal neighbor protection, a new type of feeder automation terminal with wide-area synchronization and neighbor communication technology was developed. This enables precise isolation and second-level self-healing with absolute selectivity for faults including single-phase grounding and phase-to-phase short-circuit faults, promoting the transformation and upgrading of the distribution network.

[0105] The power distribution automation feeder terminal provided in this embodiment of the utility model features an outer door 3 and an inner door 2. The outer door 3 is used to open or close the housing 1. By opening the outer door 3, the inner door 2 is exposed, allowing operation on the inner door 2. The outer door 3 also protects the inner door 2. A display and operation module 22 is provided on the inner door 2, allowing users to view the operating status of the feeder terminal and perform parameter settings.

[0106] Moreover, the aforementioned box-type FXU is low in cost, highly compatible, requires less assembly time, is easy to maintain, and has a light overall weight.

[0107] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0108] In this invention, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be a single item or multiple items.

[0109] It should be understood that, in various embodiments of the present invention, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0110] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A distribution network automation feeder terminal, characterized in that, The terminal includes: The housing contains a battery module. The inner door is rotatably connected to the outer side of the box body via an inner support, and the inner door is equipped with a display and operation module. An outer door is rotatably connected to the inner side of the box via an outer support, and the outer door and the inner door are located on the same side of the box.

2. The distribution network automation feeder terminal according to claim 1, characterized in that, A support frame is provided outside the opening of the box; The outer support includes a slide groove and a connecting rod. The slide groove is disposed on the outside of the support frame. The first end of the connecting rod is connected to the outer door, and the second end of the connecting rod is slidably connected to the slide groove.

3. The distribution network automation feeder terminal according to claim 1, characterized in that, The display and operation module includes: a display screen, indicator lights, function buttons, and a circuit breaker opening and closing hard pressure plate.

4. The distribution network automation feeder terminal according to claim 3, characterized in that, The display and operation module also includes a power switch and a card slot interface.

5. The distribution network automation feeder terminal according to claim 1, characterized in that, The enclosure contains an installation plate, and the terminal further includes a main control board module, which is mounted on the installation plate and includes a motherboard, a measurement board, and a core board.

6. The distribution network automation feeder terminal according to claim 5, characterized in that, The main control board module also includes a residual pressure board.

7. The distribution network automation feeder terminal according to claim 1, characterized in that, The battery module includes a battery bracket and a backup battery module. The battery bracket is located inside the back panel of the housing, and the backup battery module and the battery bracket are detachably connected.

8. The distribution network automation feeder terminal according to claim 1, characterized in that, Also includes: An interface mounting plate is mounted on the bottom plate of the enclosure. The interface mounting plate is equipped with network port connectors, power supply voltage connectors, current interface connectors, and control signal connectors.

9. The distribution network automation feeder terminal according to claim 1, characterized in that, The bottom plate of the enclosure is equipped with a waterproof lock, indicator light, and grounding post.

10. The distribution network automation feeder terminal according to claim 1, characterized in that, It also includes an antenna bracket, which is disposed at least at one location on the bottom plate and side plate of the enclosure.

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