Standardized module power distribution terminal capable of being replaced without power failure and use method of standardized module power distribution terminal

Abstract

The invention discloses a standardized module power distribution terminal capable of being replaced without power cut and a use method thereof. The power distribution terminal comprises a box body, a supporting part, a DTU core part, a part capable of being replaced without power cut and a power supply control part, the box body and the supporting part are used for accommodating, supporting and placing the DTU core part, the non-power-cut replacement part and the power supply control part; the DTU core component is integrated and accommodated in the control case in the form of a standardized module; the non-power-cut replacement part comprises a base module and a conductive module. Wherein the base module is used for installing an electric meter, and the conductive module is a plug-in type conductive module and can be inserted into the base module or pulled out of the base module, so that the DTU core component can be replaced under the condition that the control cabinet is not powered off; and the power supply control part is used for performing safety protection on power supply elements in the control case, including executing data backup, prompting to operate the conductive module, and monitoring and protecting equipment in the case body and the supporting part.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power distribution terminal, in particular, to a standardized module power distribution terminal capable of being replaced without power cut and a use method thereof. BACKGROUND

[0002] The distribution transformer unit (DTU) is a core terminal device in the power distribution field, responsible for power data transmission, device monitoring and encryption protection functions. The distribution transformer unit is generally installed in the switching station, ring network cabinet, substation, etc., used for collecting and calculating the data of switching devices, realizing the fault identification, isolation and power restoration operation of feeder switches, and some distribution transformer units also have the functions of protection and automatic input of standby power.

[0003] The construction of distribution network automation has been more than ten years since 2012. The first batch of terminals in various cities has reached the retirement age. Most of the terminals are in disrepair and cannot meet the latest specification requirements, making it difficult to enter the retirement process. The primary equipment adapted to the distribution transformer units that need to be replaced due to reaching the age limit is also relatively old, most of which do not have secondary cubicles, and cannot be connected to the distribution transformer unit in the secondary cubicle. When the distribution transformer unit is removed, the CT (Current Transformer) cannot be prevented from being open-circuited. Therefore, the replacement and reconstruction of the distribution transformer unit currently requires power cut.

[0004] In addition to the distribution transformer units that need to be replaced due to reaching the age limit, new models of distribution transformer units serve as effective tools to improve power supply reliability. Through function modules, they realize the remote control, remote signaling, and remote measurement functions of distribution network automation, thereby timely grasping the device state information and power damage situation, and accelerating the repair and restoration of power supply equipment and users. However, the installation and replacement of new models of distribution transformer units require power cut due to primary equipment wiring, and the power cut replacement of distribution transformer units takes a long time, which greatly affects the power supply reliability index and seriously reduces the power supply reliability. SUMMARY

[0005] To solve the problems in the prior art, the present application provides a standardized module distribution transformer unit capable of being replaced without power cut and a use method thereof, which can realize the replacement of the distribution transformer unit without power cut, solving the problem of poor safety protection effect of the distribution transformer unit internal circuit elements due to the lack of power cut replacement feature.

[0006] The present invention adopts the following technical solutions. In a first aspect, the present invention provides a standardized modular power distribution terminal that can be replaced without power outages, comprising: a housing and supporting components, a DTU core component, a non-stop replacement component, and a power control component; the housing and supporting components are used to accommodate and support the DTU core component, the mounting frame for the DTU core component, the non-stop replacement component, and the power control component;

[0007] The DTU core components are integrated into the control chassis in the form of standardized modules and are used to collect and calculate data from switchgear, identify feeder switch faults, isolate and restore power supply; the installation frame of the DTU core components includes: a main box, a wiring panel and multiple adapters; wherein the main box is provided with multiple accommodating spaces for accommodating multiple modules of the DTU core components; the wiring panel includes an A surface and a B surface, the A surface is arranged facing the main box, and the B surface is arranged facing away from the main box; the multiple adapters are arranged on the wiring panel, and each of the adapters includes a first adapter provided on the A surface and a second adapter provided on the B surface;

[0008] The non-stop power replacement component includes: a base module and a conductive module; wherein the base module is used to install the electric meter, and the conductive module is a plug-in conductive module that can be inserted into or pulled out of the base module to enable the control chassis to replace the DTU core component without powering off;

[0009] The power control component is used to provide safety protection for the power supply elements inside the control chassis, including: performing data backup, prompting to operate the conductive module, and monitoring and protecting the equipment inside the box and supporting components.

[0010] Preferably, the box body and supporting components include: a sealed box door, a control chassis, a fixed base, a guide mounting frame, a fixed side frame, a limit card plate, a power distribution module mounting frame, and a heat dissipation panel.

[0011] The sealed door is movably connected to the front and rear ends of the control chassis via hinges; the fixed base is mounted to the bottom of the control chassis and is an integrated structure with the control chassis; the guide mounting frame is mounted on both sides of the bottom and top of the inner wall of the control chassis and extends horizontally in the front-to-back direction; the fixed side frames are mounted on the left and right sides of the control chassis, extend in the vertical direction, and are connected to the surface of the guide mounting frame;

[0012] The fixed side frame is prefabricated with multiple mounting holes of different heights, and the two ends of multiple distribution module mounting frames are connected to the fixed side frame at different heights through limiting card plates. The DTU core components and non-stop replacement components are installed on different distribution module mounting frames, and the two ends of the non-stop replacement components are fixed to the fixed side frame through card slots.

[0013] Preferably, the DTU core components include: a CPU main control module and a human-computer interaction module;

[0014] The human-computer interaction module is used to input the power distribution terminal replacement request and send it to the CPU main control module;

[0015] The CPU main control module is connected to the power control component, sends an electric energy meter bypass instruction to the power control component, and prompts the human-computer interaction module to perform the conductive module operation of replacing the component without power outage.

[0016] Preferably, after the multiple modules of the DTU core component are placed in the main box, each module exposes its wiring port outward, and the wiring ports exposed by the multiple modules of the DTU core component form a first wiring port layout; the multiple adapter ports arranged on the wiring panel have a second wiring port layout, and the second wiring port layout has no fewer wiring ports than the first wiring port layout, and each wiring port in the first wiring port layout is connected to a first adapter port corresponding to the A side by an adapter line, so that the first wiring port layout is substantially converted into the second wiring port layout.

[0017] Preferably, the wiring panel includes: a first adapter board, a second adapter board and a common adapter board; wherein, the first adapter board processes low-voltage control signals; the second adapter board processes high-voltage analog signals; and the common adapter board is used to provide power distribution, communication interface, and grounding bar.

[0018] Preferably, an insulating mounting plate is provided in the base module, a pluggable electric energy meter and an electric energy meter adapter are mounted on the insulating mounting plate, the electric energy meter adapter is provided with multiple drainage bases and power sockets, and the pluggable electric energy meter is inserted into the electric energy meter adapter.

[0019] Preferably, a functional interface is provided on the front surface of the non-power-off replacement component. The functional interface is equipped with a variety of communication interfaces and communication protocols, and exchanges data with the power control component and the CPU main control module in a wireless or wired manner.

[0020] Preferably, the power control component is first installed on the power control mounting frame, and then the power control mounting frame is installed on the power distribution module mounting frame; the power control mounting frame includes: a slide rail, a fixing frame and a power distribution control frame;

[0021] The fixing frame is installed inside the power distribution control frame, and the slide rail is arranged on the surface of the fixing frame; the rear end surface of the power control component has a slide groove structure; and the slide groove structure is engaged and fixed with the slide rail.

[0022] A second aspect of the present invention provides a method for using a standardized modular power distribution terminal that can be replaced without power outages, wherein the method uses the standardized modular power distribution terminal that can be replaced without power outages as described in the first aspect to replace a power distribution terminal to be replaced. The method is characterized in that if the standardized modular power distribution terminal that can be replaced without power outages is used to replace another standardized modular power distribution terminal that can be replaced without power outages, step A is performed; if the standardized modular power distribution terminal that can be replaced without power outages is used to replace another power distribution terminal, step B is performed.

[0023] Step A includes: backing up data of the standardized modular power distribution terminal that can be replaced without power outages, then powering off and dismantling it; wiring the standardized modular power distribution terminal that can be replaced without power outages; verifying the remote control, remote signaling, telemetry, and remote control information of the newly replaced standardized modular power distribution terminal; and applying for equipment commissioning after the remote control, remote debugging, and remote control are passed.

[0024] Step B includes: protecting the electric energy meter in the standardized module distribution terminal; obtaining the operating data of the power supply, telesignaling, remote control, telemetering, and serial communication of the distribution terminal to be replaced, and defining the terminals on the control signal adapter board and the analog signal adapter board based on the mapping principle; cutting off the power supply of the distribution terminal to be replaced; performing signal transfer between the newly replaced standardized module distribution terminal that can be replaced without power outage and the distribution terminal to be replaced; dismantling the on-site distribution terminal to be replaced, and physically installing the newly replaced standardized module distribution terminal that can be replaced without power outage, and wiring it according to the drawings; carrying out on-site three-remote control, telesignaling, telemetering, and remote control information verification work of the newly replaced standardized module distribution terminal that can be replaced without power outage; after the three-remote control debugging is passed, apply for equipment commissioning.

[0025] Preferably, in step A, after a power distribution terminal replacement request is inputted using the human-computer interaction module of the standardized modular power distribution terminal to be replaced that can be replaced without power outage, the CPU main control module senses the operating status of each module in the standardized modular power distribution terminal to be replaced that can be replaced without power outage, and when each module is operating normally, the CPU main control module sends an electric energy meter bypass instruction to the power control component;

[0026] When the power control component receives the energy meter bypass instruction sent by the CPU main control module, it controls the energy meter to back up data to the CPU. After the data backup is completed, the power control component prompts the operation and maintenance personnel to operate the conductive module through the human-computer interaction module.

[0027] After the conductive module is operated, the power control component monitors the current and voltage of the conductive module.

[0028] Preferably, in step B, the switching is implemented with the aid of the mounting frame of the DTU core component and a plurality of switching interfaces;

[0029] The power supply, telesignaling, remote control, telemetering and serial communication terminals of the newly replaced standardized module power distribution terminal and the power distribution terminal to be replaced are directly inserted into the wiring panel of the installation frame to realize signal transfer.

[0030] Compared with the prior art, the beneficial effects of the present invention include at least:

[0031] (1) The present invention facilitates quick installation, disassembly, and maintenance of the control components within the control chassis by designing a standardized module, thereby realizing a plug-and-play function. At the same time, components can be replaced without power outages to ensure reliable contact of the control chassis without power outages, and the power control component is used to provide safety protection for the power components within the control chassis.

[0032] (2) The present invention significantly improves the power supply reliability of the distribution network through the non-stop operation technology, so that users can hardly feel the power outage when the distribution network is under maintenance and equipment replacement, thereby improving the continuity and reliability of power use, promoting the intelligent development of the distribution network, and improving the operation control level of the distribution network through intelligent means, realizing the automation, informatization and interactivity of the distribution network. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of the standardized modular power distribution terminal proposed in the present invention;

[0034] Figure 2 This is a schematic diagram of the rear-end structure of the control chassis in an embodiment of the present invention;

[0035] Figure 3 Schematic diagram of the structure of the installation framework of the DTU core component in an embodiment of the present invention;

[0036] Figure 4 Schematic diagram of another structure of the installation frame of the DTU core component in an embodiment of the present invention;

[0037] Figure 5 Schematic diagram of the power distribution control frame structure in an embodiment of the present invention;

[0038] Figure 6 A block diagram of the power control component in an embodiment of the present invention;

[0039] Figure 7 1 is a principle block diagram of an AC quantity data acquisition circuit in an embodiment of the present invention;

[0040] Figure 8 This is a method for installing a standardized modular power distribution terminal in an embodiment of the present invention;

[0041] In the figure: 1. Sealed box door; 2. Fixed side frame; 3. Control chassis; 4. Limiting card plate; 5. Power distribution module mounting frame; 6. Replacement of components without power outage; 7. Fixed base; 8. Functional interface; 9. Mounting slot; 10. Guide mounting frame; 11. Heat dissipation panel; 12. Power control component; 13. Slide structure; 14. Slide rail; 15. Fixed frame; 16. Power distribution control frame; 17. Fixing hole; 18. Heat dissipation slot; 19. First adapter; 20. Second adapter. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] like Figure 1 As shown, embodiment 1 of the present invention provides a standardized modular power distribution terminal that can be replaced without power outage, including: a box and supporting components, a DTU core component, a non-stop replacement component 6 and a power control component 12.

[0044] The housing and supporting components are used to accommodate and support the DTU core components, the non-stop replacement component 6, and the power control component 12. Preferably, but not restrictively, the housing and supporting components include: a sealed door 1, a control chassis 3, a fixed base 7, a guide mounting frame 10, fixed side frames 2, a limit plate 4, a power distribution module mounting frame 5, and a heat dissipation panel 11.

[0045] Specifically, if Figure 1 and Figure 2 As shown, the sealed box door 1 is movably connected to the front and rear ends of the control chassis 3 by hinges; the fixed base 7 is installed to the bottom of the control chassis 3 and is an integrated structure with the control chassis 3; the guide mounting frame 10 is installed on both sides of the bottom and top of the inner wall of the control chassis 3, and extends horizontally in the front and rear directions; the fixed side frame 2 is installed on the left and right sides of the control chassis 3, extends in the vertical direction, and is connected to the surface of the guide mounting frame 10 by screws.

[0046] The fixed side frame 2 is prefabricated with multiple mounting holes at different heights. The two ends of multiple distribution module mounting frames 5 are connected to the fixed side frame 2 at different heights via a limit card plate 4. Screw holes are provided at corresponding positions on the surface of the limit card plate 4 and the fixed side frame 2. The DTU core components and non-stop power replacement components 6 are installed on different distribution module mounting frames 5. The two ends of the non-stop power replacement components 6 are fixed to the fixed side frame 2 via a card slot, realizing the layered installation of the DTU core components and non-stop power replacement components 6. The heat dissipation panel 11 is provided in the gap between the layers to ventilate and dissipate heat for the DTU core components and non-stop power replacement components 6 within the interlayer space inside the control chassis 3.

[0047] Further preferably but not restrictively, the surface of the fixed side frame 2 is provided with mounting slots 9, which can be used for quick installation and disassembly and maintenance of replacement components 6 without power outages; the guide mounting frame 10 adopts a Z-shaped structure, which is not only convenient for fixed installation on both sides of the bottom and top of the inner wall of the control chassis 3, but also can form a block for both ends of the fixed side frame 2 when installing the fixed side frame 2, which is convenient for positioning during installation, and forms effective support for the fixed side frame 2 after installation, thereby improving structural stability; the surface of the heat dissipation panel 11 is provided with heat dissipation grooves 18, which are convenient for ventilation and heat dissipation inside the control chassis 3, and fixing holes 17 are provided at the corners of the heat dissipation panel 11 for quick positioning and fixing of the heat dissipation panel 11.

[0048] The power distribution terminal is the core equipment of the power distribution automation system. Its internal circuit design is complex. As one of the outstanding substantive features of the present invention, the DTU core components are integrated into the control chassis 3 in the form of standardized modules to collect and calculate the data of the switch equipment, realize the fault identification, isolation and power restoration operations of the feeder switch. Specifically, the DTU core components include: power module, CPU (Central Processing Unit) main control module, communication module, human-computer interaction module, protection and isolation circuit, analog acquisition module and switch input / output module.

[0049] The power module is used to provide a stable working power supply for the DTU, such as but not limited to DC 24V or AC / DC220V power supply. The key components in the power module include: a power conversion chip, a filter capacitor, an anti-reverse diode and a TVS diode; the power conversion chip is used to convert the input voltage to the required level, the filter capacitor includes but is not limited to: electrolytic capacitors, ceramic capacitors, which are used to suppress power supply noise; the anti-reverse diode is used to protect the circuit from damage caused by reverse polarity of the power supply; the TVS diode (Transient Voltage Suppressor) is used to prevent surge impact. Preferably, but not restrictively, after the input power passes through the lightning protection / filter circuit, the voltage is output to each module through DC-DC conversion.

[0050] The CPU main control module is used for data processing, logic control, and protocol analysis. The key components of the CPU main control module include: a microprocessor, Flash memory, SDRAM (Synchronous Dynamic Random-Access Memory), a real-time clock, and a watchdog chip; the microprocessor is used to run the embedded system; the Flash memory is used to store programs and data; the SDRAM is used for running memory; the real-time clock is used to record event timestamps; and the watchdog chip is used to prevent the program from running away. Preferably, but not restrictively, the CPU main control module communicates with peripheral chips through the SPI / I2C bus and controls other modules through GPIO (General-Purpose Input / Output).

[0051] The analog quantity acquisition module is a PT / CT circuit (PT, Potential Transformer, voltage transformer; CT, Current Transformer, current transformer), which is used to collect voltage and current signals and convert them into digital quantities. The key components of the analog quantity acquisition module include: PT, CT, signal conditioning circuit, precision resistor, low-pass filter circuit, ADC (Analog-to-Digital Converter) chip; the PT is used to input 10kV / 100V and output a small voltage signal; the CT is used to input 100A / 5A or 1A and output a small current signal; the signal conditioning circuit is used to amplify weak signals; the precision resistor is used for voltage division / sampling; the low-pass filter circuit is used to suppress high-frequency interference; the ADC chip is used to convert analog signals into digital signals. Preferably, but not restrictively, the signal on the secondary side of the PT / CT is sequentially input into the CPU main control module after passing through the signal conditioning circuit and ADC chip.

[0052] The digital input module (DI) is used to monitor the status of circuit breakers, disconnectors, and other devices, including but not limited to open / closed status and alarm signals. Key components of the digital input module include an optocoupler, pull-up resistor, and Schmitt trigger. The optocoupler provides electrical isolation to prevent high-voltage intrusion; the pull-up resistor ensures a stable high level in the absence of a signal; and the Schmitt trigger eliminates jitter. Preferably, but not restrictively, the external passive contact is input to the CPU's GPIO via an optocoupler.

[0053] The digital output (DO) module is used to control the opening / closing of the circuit breaker and output alarms. Key components of the DO module include relays, driver transistors / MOSFETs, and freewheeling diodes. The relays provide high-voltage isolation control; the driver transistors / MOSFETs amplify control signals from the CPU main control module; and the freewheeling diodes protect the relay coils. Preferably, but not restrictively, the CPU main control module's GPIO signals the driver circuit to control the relays and, therefore, the external devices.

[0054] The communication module is used to communicate with a master station (SCADA, Supervisory Control And Data Acquisition) or other devices. Key components of the communication module include: a 4G module, a fiber optic transceiver, an RS-485 chip, and a protocol stack chip; the 4G module is used for wireless communication; the fiber optic transceiver is used to support industrial Ethernet; and the RS-485 chip is used for local device interconnection. Preferably, but not restrictively, the CPU controls the communication chip via a UART / SPI (Universal Asynchronous Receiver / Transmitter / Serial Peripheral Interface) and connects to an antenna or fiber optic interface.

[0055] The human-computer interaction module is used for local status display and parameter settings. Key components of the human-computer interaction module include an LCD (Liquid Crystal Display) screen, a keypad / touchscreen, and LED (Light Emitting Diode) indicators. The LCD screen displays data; the keypad / touchscreen is used for input operations; and the LED indicator indicates operation / fault status. Preferably, but not restrictively, the human-computer interaction module is connected to the CPU main control module via an I2C / SPI interface.

[0056] The protection and isolation circuit is used for lightning protection, interference prevention, and electrical isolation. Key components of the protection and isolation circuit include: gas discharge tubes (GDTs), magnetic isolators, and common-mode chokes. The gas discharge tubes (GDTs) are used for lightning protection; the magnetic isolators are used for digital signal isolation; and the common-mode chokes are used to suppress electromagnetic interference. Preferably, but not restrictively, the protection and isolation circuit is integrated into the input / output terminals of the power supply, communication, and I / O modules.

[0057] It is worth noting that the present invention differs significantly from the prior art in at least the following ways: the power distribution terminal in the prior art is not an integrated device, but rather includes many relatively independent devices dispersed in different installation locations; in particular, the wiring of the energy meter in the power distribution terminal is more complicated than that of the energy meter in general equipment. When replacing the power distribution terminal, it is necessary to disconnect the power grid where the power distribution terminal is located, perform on-site wiring to short-circuit and switch the energy meter, and then replace the modules in the power distribution terminal one by one, which is inefficient and prone to errors. The present invention, on the other hand, integrates all the core components of the DTU into the housing and support components. By configuring the non-stop replacement component 6 and the power control component 12 and providing a convenient plug-in port, after replacing the existing power distribution terminal, the power distribution terminal device can be replaced without power outage at the user end.

[0058] Preferably, but not limited to, Figure 3 As shown, the present invention also provides an installation frame for a DTU core component, including: a main box, a wiring panel and a plurality of transfer interfaces.

[0059] Specifically, the main box is provided with multiple accommodating spaces for accommodating multiple modules of the DTU core component, such as, but not limited to, the power module, CPU main control module, communication module, analog acquisition module, and digital input / output module. After the multiple modules of the DTU core component are placed in the main box, each module exposes its wiring port, and the exposed wiring ports of the multiple modules of the DTU core component form a first wiring port layout.

[0060] The wiring panel includes side A and side B. Figure 3 、 Figure 4As shown, the A side is arranged facing the main box, and the B side is arranged facing away from the main box. The multiple adapters are arranged on the wiring panel, and each of the adapters includes: a first adapter 19 arranged on the A side and a second adapter 20 arranged on the B side. The multiple adapters have a second wiring port layout, and the second wiring port layout has at least more wiring ports than the first wiring port layout, and the distribution pattern of the second wiring port layout can be different from the first wiring port layout. Each wiring port in the first wiring port layout is connected to a first adapter 19 corresponding to the A side by an adapter line, so that the first wiring port layout is substantially converted into the second wiring port layout.

[0061] In a further preferred, but non-limiting embodiment, the wiring panel is an adapter plate with a PCB circuit board. Specifically, the adapter plate is a mechanical direct adapter, with side A connecting to the device panels of the DTU core component modules to be replaced, and side B connecting to the device panels of the newly replaced DTU core component modules. The structure of side A can be prefabricated based on the actual conditions at the replacement site, and side B can be combined with the prefabrication of side A.

[0062] Furthermore, a PCB circuit board is placed between Side A and Side B, connecting the circuits of the Side A ports with those of the Side B ports, making Side B wiring simpler. Furthermore, the ports on Side A can be configured to correspond to the device panels of the modules of the commonly replaced old DTU core components. For example, but not limited to, three-remote port modularization means that Side A can be divided into three large areas, mainly corresponding to different three-remote test lines. Removable ports can also achieve more convenient wiring.

[0063] Furthermore, a short-circuit port is provided on the adapter board. By wiring, the two short-circuit ends of the secondary side are connected to the short-circuit port to short-circuit the secondary side of the CT. Compared with the method of directly short-circuiting through a short-circuit plate or a line, the short-circuit can be performed more stably, avoiding the impact of the short-circuit during operation.

[0064] Furthermore, the adapter board is integrated with safety / protection equipment for the construction station, including but not limited to at least one of a miniature circuit breaker plug, an insertable signal isolator, or an optocoupler isolation module. Examples include, but are not limited to, a DC 24V / 48V isolator that physically disconnects the power supply when a power cord is plugged in; an insertable signal isolator that blocks data transmission when a communication port (such as RS-485 / Ethernet) line is plugged in; and an optocoupler isolation module connected in parallel with the remote signal input port (DI) to prevent construction interference from causing erroneous signals.

[0065] Furthermore, the wiring panel includes: a first adapter board, a second adapter board and a common adapter board; wherein the first adapter board processes low-voltage control signals (telesignaling, remote control, power supply, battery activation, etc.), including the following typical interfaces: Phoenix terminal (screw fixed), plug-in connector (anti-misplugging design), LED status indicator light; the second adapter board processes high-voltage analog signals (CT current, PT voltage and other telemetry loops), including the following typical interfaces: pluggable terminals (with shorting slots), isolation transformer interface, test hole (for injection signal verification); the common adapter board is used to provide power distribution, communication interface (such as RS-485), and grounding busbar. Typical interfaces include: power input terminal (DC 24V / AC 220V), communication terminal (DB9 / network port), and copper busbar grounding terminal.

[0066] The non-stop power replacement component 6 is used to ensure reliable contact of the control chassis 3 without power outage. The non-stop power replacement component 6 includes: a base module and a conductive module; wherein, the base module is used to install the electric meter, and the conductive module is a plug-in conductor that can be inserted into or unplugged from the base module.

[0067] An insulating mounting plate is provided in the base module, on which a pluggable electric energy meter and an electric energy meter adapter are installed. The electric energy meter adapter is provided with multiple drainage bases and power jacks, and the pluggable electric energy meter is inserted into the electric energy meter adapter.

[0068] The pluggable conductive module is inserted into the base module to ensure uninterrupted power supply during meter replacement. As a prominent substantive feature of the present invention and a significant advancement over the prior art, the non-stop operation technology significantly improves the power supply reliability of the distribution network. This allows users to experience virtually no power outages during network maintenance and equipment replacement, thereby enhancing the continuity and reliability of power use and promoting the intelligent development of the distribution network. Through intelligent means, the operational control level of the distribution network is enhanced, achieving automation, informatization, and interactivity.

[0069] The front end surface of the non-stop power replacement component 6 is provided with a functional interface 8, and the functional interface 8 is equipped with a variety of communication interfaces and communication protocols, and exchanges data with the power control component 12 and the CPU main control module in a wireless or wired manner.

[0070] The power control component 12 is first installed on the power control mounting frame, and then the power control mounting frame is installed on the distribution module mounting frame 5, which is used to safely protect the power supply components inside the control chassis 3 and to safely protect the staff when installing the meter without power outage.

[0071] like Figure 5As shown, the power control mounting frame includes: a slide rail 14, a fixed frame 15 and a power distribution control frame 16; wherein, the fixed frame 15 is installed inside the power distribution control frame 16, and the slide rail 14 is arranged on the surface of the fixed frame 15; the rear end surface of the power control component 12 has a slide groove structure 13; the slide groove structure 13 is embedded and fixed with the slide rail 14, and can be used to perform a modular snap-in design on the power control component 12, so as to facilitate regular maintenance operations thereon.

[0072] The safety protection of the power supply elements inside the control chassis 3 specifically includes: after using the human-computer interaction module in the DTU core component to input the distribution terminal replacement request, the CPU main control module in the DTU core component perceives the operating status of each module in the distribution terminal, and when each module is operating normally, the CPU main control module sends an energy meter bypass instruction to the power control component 12; when the power control component 12 receives the energy meter bypass instruction sent by the CPU main control module, it controls the energy meter to back up data to the CPU main control module; after the data backup is completed, the power control component 12 prompts the operation and maintenance personnel to perform the conductive module operation of the non-stop replacement component 6 through the human-computer interaction module; after the conductive module operation is completed, the power control component 12 monitors the current and voltage of the conductive module. When the current and voltage of the conductive module suddenly change, it is increased that there is a safety hazard.

[0073] Specifically, when the standardized modular power distribution terminal proposed in the present invention is used to replace existing equipment, the conductive module is first inserted into the auxiliary drainage base and the auxiliary power socket at the same time, thereby protecting the electric energy meter in the standardized modular power distribution terminal during the installation process; when the standardized modular power distribution terminal proposed in the present invention is replaced, the conductive module is also first inserted into the auxiliary drainage base and the auxiliary power socket at the same time, thereby protecting the electric energy meter in the standardized modular power distribution terminal during the replacement process.

[0074] like Figure 6 As shown, the power control component 12 includes: a data acquisition module, a fault detection module, a communication control module, an information exchange module, a self-healing control module and a power charge and discharge management module.

[0075] The data acquisition module is used to collect data on the internal circuit information of the distribution terminal, the fault detection module is used to monitor and alarm the internal circuit fault of the control chassis 3, and the data acquisition module transmits the collected data to other devices, including: controllers and displays, through the communication control module to achieve data sharing and control.

[0076] The information exchange module displays the collected and processed data to the user in the form of graphics and tables to facilitate the user's analysis and decision-making. The information exchange module also includes data upload and download functions of the data collector.

[0077] The working power supply in the power charge and discharge management module is taken from the 220V AC output of the secondary side of the line voltage transformer, which is converted into DC 24V by the power charge and discharge management module to supply the station terminal. The backup power supply uses a battery or a supercapacitor, thereby effectively ensuring the safe and stable operation of the control chassis 3, making it less likely to have circuit failures and power outages inside.

[0078] like Figure 7 As shown, the power supply control component 12 also includes an AC quantity data acquisition circuit, which introduces the AC analog quantity from the secondary side of the mutual inductor, and converts the analog quantity into an analog electrical signal suitable for reception and processing by the AD sampling chip through an isolation transformer, a conditioning circuit, a low-pass filter, and a multi-way switch. The analog electrical signal is then converted into a digital signal through the AD sampling chip and sent to the DSP chip for real-time data calculation and analysis.

[0079] like Figure 8 As shown, Example 2 of the present invention provides a method for using a standardized modular power distribution terminal that can be replaced without power outages, which is used to replace the power distribution terminal to be replaced with the standardized modular power distribution terminal that can be replaced without power outages described in Example 1. If the standardized modular power distribution terminal that can be replaced without power outages provided by the present invention is used to replace another standardized modular power distribution terminal that can be replaced without power outages, step A is executed. If the standardized modular power distribution terminal that can be replaced without power outages provided by the present invention is used to replace other power distribution terminals, step B is executed.

[0080] Specifically, the step A includes:

[0081] Step A1: back up the data of the standardized modular power distribution terminal to be replaced that can be replaced without power outage, then power it off and dismantle it.

[0082] It is understood that because the standardized modular power distribution terminal provided by the present invention, which can be replaced without powering off, integrates the DTU core components in the form of standardized modules within the control chassis 3, it can be powered off as a whole, without having to power off each module of the DTU core components one by one as in the prior art. For example, but not limited to, the main power button or main power terminal can be used to power off the standardized modular power distribution terminal to be replaced with one click, and the power is also removed at the same time.

[0083] Preferably but not limitatively, step A1 specifically includes:

[0084] Step A1.1: After inputting a power distribution terminal replacement request using the human-computer interaction module of the standardized module power distribution terminal that can be replaced without power outage, the CPU main control module senses the operating status of each module in the standardized module power distribution terminal that can be replaced without power outage. When each module is operating normally, the CPU main control module sends an electricity meter bypass instruction to the power control component 12; when the power control component 12 receives the electricity meter bypass instruction sent by the CPU main control module, it controls the electricity meter to back up data to the CPU; after the data backup is completed, the power control component 12 prompts the operation and maintenance personnel to operate the conductive module through the human-computer interaction module; the conductive module is inserted into the auxiliary drainage base and the auxiliary power jack at the same time, so as to protect the electricity meter in the standardized module power distribution terminal during the replacement process; after the conductive module operation is completed, the power control component 12 monitors the current and voltage of the conductive module. When the current and voltage of the conductive module suddenly change, there is a safety hazard.

[0085] Step A1.2: Remove the telemetry signal line (PT / CT circuit) of the standardized modular power distribution terminal to be replaced, which can be replaced without power outage, and first disconnect the current (CT) and voltage (PT) signal lines.

[0086] For the CT current loop, an open CT circuit can cause a high voltage of several thousand volts and pose a risk of electric shock. Short the CT secondary side with a shorting bar or wire before removing the terminals to prevent open-circuit high voltage. For example, but not limited to, using a multimeter to measure the resistance after shorting should be 0Ω to verify this.

[0087] Regarding the PT voltage circuit: If the PT is not disconnected, it may cause misdetection or short circuit and burn the equipment. First disconnect the PT secondary circuit breaker, and then remove the voltage terminal, for example but not limited to, confirm that there is no voltage at the terminal before operating.

[0088] Step A1.3: Unplug the Phoenix terminals of the telesignaling, remote control, power supply, and battery activation signal lines of the standardized modular power distribution terminal to be replaced, which can be replaced without power outage; that is, disconnect the control signal and power supply.

[0089] Further preferably, but not limiting, first unplug the remote control terminal (to prevent misoperation) → then unplug the remote signal terminal (isolation status signal) → then unplug the battery activation signal (to prevent battery abnormality) → finally unplug the power terminal (finally power off). You can also wear an anti-static wristband for static protection to avoid damage to electronic components.

[0090] It's important to note that the remote control (remote signaling, remote control) should be disconnected first to prevent accidental opening and closing of the circuit breaker during wiring removal, and the power supply should be disconnected later to ensure that other operations are completed under control. If the power supply is disconnected first, the standardized modular power distribution terminal (which can be replaced without power outage) to be replaced may record data abnormally or send erroneous signals. Furthermore, plugging and unplugging terminals while powered on may cause arcing and damage the interface.

[0091] Step A1.4: Remove the standardized module power distribution terminal to be replaced and the 1U panel at the lower end. That is, physically disassemble the equipment, and ensure that all electrical connections have been isolated before mechanical operation. Live disassembly can cause short circuits or mechanical damage.

[0092] When removing the standardized module power distribution terminal to be replaced, the signals of the standardized module power distribution terminal to be replaced and the newly replaced standardized module power distribution terminal need to be checked first, including: telemetry, remote signaling, remote control, power supply, and battery activation signal line, whether they are consistent with the design Figure 1 , and consistent to proceed with the upgrade.

[0093] It is worth noting that, in view of the priority of typical risks: CT open circuit high voltage > misremote control > power supply reverse power > mechanical damage, the above steps A1.1-A1.3 are executed in the order: telemetry signal line (CT / PT) > phoenix terminal (remote control priority) > physical disassembly, to isolate the dangerous source (high voltage / signal) first, then power off, and finally mechanical operation.

[0094] Similarly, the existing power distribution terminal uses non-integrated circuits, and the wiring is complex, which can easily cause confusion in the power-off sequence, resulting in a high accident rate. The integrated standardized module power distribution terminal of the present application is adopted, and the terminals are integrated on the panel of the shell, which is convenient to operate and greatly reduces the risk probability.

[0095] Step A2: According to the design drawing, carry out the wiring work of the standardized module power distribution terminal that can be replaced without power interruption.

[0096] Preferably but not limitedly, step A2 specifically includes:

[0097] Step A2.1: Survey the current wiring port layout of the DTU core component of the standardized module power distribution terminal to be replaced, and design the second wiring port layout according to the survey results, so that the second wiring port layout is equivalent to the current wiring port layout.

[0098] Step A2.2: Mark the wiring in the current wiring port layout in a distribution order based on the distribution of the current wiring port layout.

[0099] Step A2.3: Short-circuit the grid secondary side equipment where the DTU core component of the standardized module power distribution terminal to be replaced is located, and then disconnect and remove the DTU core component of the standardized module power distribution terminal to be replaced from the wiring.

[0100] Step A2.4: Install the marked wiring to the second adapter 20 in the arrangement order, and replace the DTU core component of the non-power-off standardized modular power distribution terminal with the mounting frame for fixing.

[0101] Step A3: After wiring is complete, conduct on-site verification of the three remote controls (remote signaling, telemetry, and remote control) of the newly replaced, non-stop standardized modular power distribution terminal. After the three remote controls have passed commissioning, apply for equipment commissioning. This completes the transformation of the non-stop replaceable standardized power distribution terminal.

[0102] Specifically, step B includes:

[0103] Step B1: When the standardized modular power distribution terminal proposed in the present invention is used to replace other power distribution terminals, the conductive module of the newly replaced standardized modular power distribution terminal that can be replaced without power outage is first inserted into the auxiliary drainage base and the auxiliary power socket at the same time, thereby protecting the electric energy meter in the standardized modular power distribution terminal during the installation process.

[0104] Step B2: Obtain operational data for the power distribution terminal to be replaced, including power supply, telesignaling, remote control, telemetering, and serial communication. Based on the mapping principle, define the terminals on the control signal adapter board and the analog signal adapter board. For example, but not limited to, obtaining drawings of the power distribution terminal to be replaced can extract information such as the three remote control definitions, terminal definitions, and power supply voltage.

[0105] Step B3: Cut off the power supply of the power distribution terminal to be replaced. Further preferably but not limiting, step B2 specifically includes:

[0106] Step B3.1: First, open the remote control panel, disconnect the DO circuit, and logically disable remote control functions of the distribution terminal to be replaced, such as, but not limited to, remote opening / closing control. This prevents erroneous backend operation during maintenance. If remote control is not first disabled, a subsequent power outage may cause the distribution terminal to mistakenly issue opening / closing commands. The distribution terminal to be replaced can control the remote control panel via the DO circuit, thereby remotely controlling the circuit breakers on its associated transformers and substation equipment, providing short-circuit protection for the transformers, substation equipment, and other components.

[0107] Step B3.2: After ensuring the DO circuit is disconnected and the remote control function is disabled, disconnect the power modules in sequence, including but not limited to the incoming power, operating power, and remote signaling power, to terminate active operation. If the voltage / current circuit is disconnected first, the remaining power supply may cause abnormal alarms or data corruption at the distribution terminal to be replaced.

[0108] Step B3.3: Disconnect the voltage circuit of the distribution terminal (PT) to be replaced according to secondary safety measures. Do not operate the current circuit while the voltage circuit is energized, so the voltage must be isolated first. Operating the current circuit while the voltage circuit is energized may cause an open circuit and high voltage on the PT secondary side. It is understood that the voltage circuit of the distribution terminal to be replaced is used to collect line or bus voltage signals for protection, measurement, and automated control.

[0109] Step B3.4: Use the current terminal shorting connector to short the telemetry current terminals. Verify that the CT is not open-circuited, and then disconnect the internal connectors on the current terminals. The current loop must be shorted after power is removed to prevent high voltages from being generated by an open CT. If the CT is not shorted, an open circuit could generate thousands of volts, endangering personnel and equipment.

[0110] Step B3.5: Disconnect all devices on the power distribution terminal to be replaced one by one. Disconnect the core power supply and signal power supply to the terminal to ensure it cannot actively perform any operations or upload data. Finally, completely disconnect all devices from power input, ensuring complete isolation. Prematurely disconnecting the main power supply may prevent the terminal from properly executing the logical exit operation, potentially damaging some components.

[0111] Steps B3.1 through B3.5 must be performed in strict sequence, starting with logical isolation and ending with physical power disconnection; and starting with the signal circuit and ending with the power circuit, to eliminate the risk of safety accidents. Understandably, the replacement power distribution terminal uses non-integrated circuits, resulting in complex wiring and a high probability of misalignment in the power disconnection sequence.

[0112] Step B4: Perform signal transfer between the newly replaced standardized modular power distribution terminal that can be replaced without power outage and the power distribution terminal to be replaced.

[0113] Further preferably but not limiting, step B4 specifically includes:

[0114] Step B4.1: directly insert the power supply, telesignaling, remote control, telemetering, and serial communication terminals of the newly replaced standardized modular power distribution terminal and the power distribution terminal to be replaced into the wiring panel of the installation frame to realize signal transfer.

[0115] For the power terminal, give priority to connecting it to ensure that there is electricity for testing in subsequent operations. Specifically, refer to the drawing to insert the power cord (such as DC 24V+ / -) of the distribution terminal to be replaced into the corresponding socket of the adapter box, tighten the flange screws, and use a multimeter to confirm that the voltage polarity is correct (red pen tests +, black pen tests -) to verify the polarity.

[0116] Phoenix terminal connection (first adapter board): Remote signal terminal (DI signal): Connect YX1, YX2, and other terminals of the distribution terminal to be replaced to the corresponding sockets on the first adapter board according to the drawing. Remote control terminal (DO signal): Connect to the opening / closing control line. Battery activation signal: Connect to the battery management circuit (such as BAT+12V, BAT-12V).

[0117] Tightening check: Confirm that the flange screws are tightened one by one, and gently pull the cable to test whether it is loose.

[0118] Telemetry Signal Connection (Second Adapter Board): Current Circuit (CT): Short-circuit the CT secondary of the old DTU and connect to the second adapter board. Voltage Circuit (PT): Disconnect the PT line from the old DTU and connect to the second adapter board. Open / Short Circuit Protection: Keep the CT circuit shorting piece closed and the PT circuit open.

[0119] Step B4.2: Connect the network cable directly to the newly replaced, non-power-off, standardized modular power distribution terminal. Specifically, plug the Phoenix terminals (remote signaling, remote control, activation, and power) into the corresponding sockets on the first signal adapter board and tighten the flange screws according to the drawings. Connect the telemetry signal cable to the corresponding terminal on the second signal adapter board. Connect the device (DBG, LCD) network port to the corresponding network port on the panel, and connect the external network cable to the ETH1 port. After wiring is complete, check the wiring against the drawings to ensure it is correct.

[0120] The above steps should be connected in order. The power cord should be connected to the wiring panel first. Only after the newly replaced standardized modular power distribution terminal (replaceable without power outage) is powered on can subsequent signals (such as telesignaling and remote control) be verified for proper transmission. If the signal cable is connected before power is applied, misinterpretation of the signal (such as an erroneous trip command) may occur due to a lack of initialization.

[0121] The second terminal is connected to the Phoenix terminal (remote signal / remote control) → telemetry signal (CT / PT). Remote signal / remote control is a low-voltage signal (usually DC 24V), and prioritizing it can reduce the risk of accidental contact with the high-voltage circuit (CT / PT). The CT circuit in the telemetry circuit should be short-circuited before operation. Placing it later in the order facilitates centralized processing of high-voltage protection.

[0122] Connect the network cable last. Network communication may trigger automatic time or data synchronization on the newly replaced standardized modular power distribution terminal (which can be replaced without power outage). Ensure that other circuits are stable. Avoid damaging the PHY chip by hot-plugging the network port.

[0123] Step B5: Remove the power distribution terminal to be replaced on site and physically install the new, non-stop, standardized modular power distribution terminal. Connect the terminals according to the wiring diagram, connecting the interfaces to the corresponding circuits or components. If the ports are incompatible, they can be replaced.

[0124] Step B6: After wiring is complete, conduct on-site verification of the three remote controls (remote signaling, telemetry, and remote control) of the newly replaced, non-stop standardized modular power distribution terminal. After the three remote controls have been debugged, restore all secondary safety measures and apply for equipment commissioning.

[0125] The three remote debugging include: 1. Test each AC signal separately with the relay tester to check whether the signal is correct; 2. Apply positive remote signal to each remote signal to check whether the corresponding remote signal is correct; 3. Operate each remote control separately and measure the corresponding signal output with a multimeter to see if it is correct.

[0126] Restoring all secondary safety measures includes: 1. Closing the current terminal connector, confirming that the CT is not open-circuited, and then removing the open-circuit current shorting connector; 2. Closing the remote control pressure plate; 3. Turning on the power of all equipment.

[0127] It is worth noting that the use of an installation frame with a wiring panel allows upgrades to be performed at the site by quickly inserting and plugging in wiring according to the marked sequence. This rapid insertion and plugging allows the DTU core component to be upgraded while the secondary side is short-circuited and the primary side is powered, reducing the secondary side short-circuit time and avoiding the risk of errors and damage caused by short-circuit. Traditional methods cannot perform replacement operations with a secondary side short-circuit and require a complete power outage. This invention reduces the time-consuming and complete power outage-required installation methods of the previous method, which brought inconvenience and losses to residential and industrial electricity users.

[0128] It is worth noting that in the embodiments of the present invention, "step + number" is only a way of expression for clearly describing the specific implementation method of the usage method, rather than an absolute restriction on the sequence of each step. Under the guidance of the core concept of the present invention, changing the order of implementing these steps to obtain the same or similar technical effects falls within the scope of the disclosure of the present invention.

[0129] 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 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 by the scope of protection of the claims of the present invention.

Claims

1. A standardized modular power distribution terminal that can be replaced without power outage, characterized in that: include: Box and supporting components, DTU core components, non-stop replacement components (6) and power control components (12); The box and the supporting components are used to accommodate and support the DTU core components, the installation frame of the DTU core components, the non-stop replacement components (6) and the power control components (12); The core components of the DTU are integrated into the control chassis (3) in the form of standardized modules and are used to collect and calculate data from switchgear, identify feeder switch faults, isolate and restore power supply; The mounting frame of the DTU core component includes: a main box, a wiring panel and a plurality of adapters; wherein the main box is provided with a plurality of accommodating spaces for accommodating a plurality of modules of the DTU core component; the wiring panel includes an A surface and a B surface, the A surface is arranged facing the main box, and the B surface is arranged facing away from the main box; the plurality of adapters are arranged on the wiring panel, each of the adapters including a first adapter provided on the A surface and a second adapter provided on the B surface; The non-stop power replacement component (6) comprises: a base module and a conductive module; wherein the base module is used to install the electric meter, and the conductive module is a plug-in conductive module that can be inserted into or pulled out of the base module, so as to enable the control chassis (3) to replace the DTU core component without power outage; The power control component (12) is used to provide safety protection for the power supply elements inside the control box (3), including: performing data backup, prompting to operate the conductive module, and monitoring and protecting the equipment inside the box and the supporting components.

2. The standardized modular power distribution terminal capable of being replaced without power outage according to claim 1, characterized in that: The box body and supporting components include: a sealed box door (1), a control box (3), a fixed base (7), a guide mounting frame (10), a fixed side frame (2), a limit card plate (4), a power distribution module mounting frame (5), and a heat dissipation panel (11). The sealed box door (1) is movably connected to the front and rear ends of the control box (3) through hinges; the fixed base (7) is installed at the bottom of the control box (3) and is an integrated structure with the control box (3); the guide mounting frame (10) is installed on both sides of the bottom and top of the inner wall of the control box (3) and extends horizontally in the front-back direction; the fixed side frame (2) is installed on the left and right sides of the control box (3), extends in the vertical direction, and is connected to the surface of the guide mounting frame (10); The fixed side frame (2) is prefabricated with a plurality of mounting holes at different heights, and the two ends of the plurality of power distribution module mounting frames (5) are connected to the fixed side frame (2) at different heights through limiting clamping plates (4), and the DTU core component and the non-stop power replacement component (6) are installed on different power distribution module mounting frames (5), and the two ends of the non-stop power replacement component (6) are fixed to the fixed side frame (2) through clamping slots.

3. The standardized modular power distribution terminal capable of being replaced without power outage according to claim 1, characterized in that: The core components of the DTU include: CPU main control module and human-computer interaction module; The human-computer interaction module is used to input the power distribution terminal replacement request and send it to the CPU main control module; The CPU main control module is connected to the power control component (12), sends an electric energy meter bypass instruction to the power control component (12), and prompts the human-computer interaction module to perform the conductive module operation of the non-power-off replacement component (6).

4. The standardized modular power distribution terminal capable of being replaced without power outage according to claim 1, characterized in that: After the multiple modules of the DTU core component are placed in the main box, each module exposes its wiring port outward, and the wiring ports exposed by the multiple modules of the DTU core component form a first wiring port layout; A plurality of adapter ports arranged on the wiring panel have a second wiring port layout, wherein the second wiring port layout has no fewer wiring ports than the first wiring port layout, and each wiring port in the first wiring port layout is connected to a first adapter port corresponding to the A side by an adapter cable, so that the first wiring port layout is substantially converted into the second wiring port layout.

5. The standardized modular power distribution terminal capable of being replaced without power outage according to claim 1 or 4, characterized in that: The wiring panel includes: a first adapter board, a second adapter board and a common adapter board; wherein the first adapter board processes low-voltage control signals; the second adapter board processes high-voltage analog signals; and the common adapter board is used to provide power distribution, communication interface, and grounding bar.

6. A standardized modular power distribution terminal capable of being replaced without power outage according to any one of claims 1 to 3, characterized in that: An insulating mounting plate is provided in the base module, on which a pluggable electric energy meter and an electric energy meter adapter are installed. The electric energy meter adapter is provided with multiple drainage bases and power jacks, and the pluggable electric energy meter is inserted into the electric energy meter adapter.

7. A standardized modular power distribution terminal capable of being replaced without power outage according to any one of claims 1 to 3, characterized in that: The front surface of the non-stop power replacement component (6) is provided with a functional interface (8), and the functional interface (8) is equipped with a variety of communication interfaces and communication protocols, and exchanges data with the power control component (12) and the CPU main control module in a wireless or wired manner.

8. The standardized modular power distribution terminal capable of being replaced without power outage according to claim 2, characterized in that: The power control component (12) is first installed on the power control mounting frame, and then the power control mounting frame is installed on the power distribution module mounting frame (5); the power control mounting frame includes: a slide rail (14), a fixing frame (15) and a power distribution control frame (16); The fixing frame (15) is installed inside the power distribution control frame (16), and the slide rail (14) is arranged on the surface of the fixing frame (15); the rear end surface of the power control component (12) has a slide groove structure (13); and the slide groove structure (13) is engaged and fixed with the slide rail (14).

9. A method for using a standardized modular power distribution terminal that can be replaced without power outage, wherein the method comprises using the standardized modular power distribution terminal that can be replaced without power outage according to any one of claims 1 to 8 to replace a power distribution terminal to be replaced, wherein: If the standardized modular power distribution terminal that can be replaced without power outages is used to replace another standardized modular power distribution terminal that can be replaced without power outages, step A is performed; if the standardized modular power distribution terminal that can be replaced without power outages is used to replace other power distribution terminals, step B is performed; Step A includes: backing up data of the standardized modular power distribution terminal that can be replaced without power outages, then powering off and dismantling it; wiring the standardized modular power distribution terminal that can be replaced without power outages; verifying the remote control, remote signaling, telemetry, and remote control information of the newly replaced standardized modular power distribution terminal; and applying for equipment commissioning after the remote control, remote debugging, and remote control are passed. Step B includes: protecting the electric energy meter in the standardized module distribution terminal; obtaining the operating data of the power supply, telesignaling, remote control, telemetering, and serial communication of the distribution terminal to be replaced, and defining the terminals on the control signal adapter board and the analog signal adapter board based on the mapping principle; cutting off the power supply of the distribution terminal to be replaced; performing signal transfer between the newly replaced standardized module distribution terminal that can be replaced without power outage and the distribution terminal to be replaced; dismantling the on-site distribution terminal to be replaced, and physically installing the newly replaced standardized module distribution terminal that can be replaced without power outage, and wiring it according to the drawings; carrying out on-site three-remote control, telesignaling, telemetering, and remote control information verification work of the newly replaced standardized module distribution terminal that can be replaced without power outage; after the three-remote control debugging is passed, apply for equipment commissioning.

10. The method for using a standardized modular power distribution terminal capable of being replaced without power outage according to claim 9, characterized in that: In step A, after a power distribution terminal replacement request is inputted using the human-computer interaction module of the standardized modular power distribution terminal to be replaced that can be replaced without power outage, the CPU main control module senses the operating status of each module in the standardized modular power distribution terminal to be replaced that can be replaced without power outage, and when each module is operating normally, the CPU main control module sends an electric energy meter bypass instruction to the power control component (12); When the power supply control component (12) receives the power meter bypass instruction sent by the CPU main control module, it controls the power meter to back up data to the CPU; after the data backup is completed, the power supply control component (12) prompts the operation and maintenance personnel to operate the conductive module through the human-computer interaction module; After the conductive module is operated, the power control component (12) monitors the current and voltage of the conductive module.

11. The method for using a standardized modular power distribution terminal capable of being replaced without power outage according to claim 9, characterized in that: In step B, the connection is implemented with the help of the mounting frame and multiple adapters of the DTU core component; The power supply, telesignaling, remote control, telemetering and serial communication terminals of the newly replaced standardized module power distribution terminal and the power distribution terminal to be replaced are directly inserted into the wiring panel of the installation frame to realize signal transfer.

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