Modularization-based load transfer device and method

Abstract

The invention discloses a modularization-based load transfer device and method, and relates to the technical field of electric power auxiliary tools, the modularization-based load transfer device comprises a transfer box, a power supply module, a signal receiving and transmitting module, a monitoring module, a prefabricated operation module and a fixed value setting module are arranged in the transfer box, the installation is convenient and fast, the transfer box is directly fixed at the outer side of an FTU in a transformer substation, and the operation is convenient. The circuit breaker is good in stability, is used as an external module of the FTU, and is combined with the FTU to complete load conversion of the circuit breaker. According to the invention, after the monitoring module completes the detection of the electrical data of the line, the signal transceiver module transmits the data to the fixed value setting module, the fixed value setting module carries out calculation and analysis according to the received data, the calculated fixed value is transmitted to the signal transceiver module, and the signal transceiver module sends a corresponding action instruction to the circuit breaker. After the action is completed, feedback information is sent to the signal receiving and transmitting module again, real-time calculation and real-time transmission of the FTU constant value are achieved, and load transfer of the circuit breaker is completed intelligently.

Description

Technical Field

[0001] The present invention belongs to the technical field of power-assisted tools, and in particular relates to a modular load transfer device and method. Background Art

[0002] In power systems, circuit breakers are key protective devices. The accuracy and timeliness of their protection settings are directly related to the safety and reliability of grid operations. With the advancement of smart grid construction, the scale of power systems continues to expand, and the grid structure becomes increasingly complex, placing higher demands on the refined and intelligent management of circuit breaker protection settings.

[0003] Currently, circuit breaker protection settings are still generally adjusted manually on-site. Maintenance personnel must use paper setting sheets and carry specialized tools to the substation or distribution site to set and adjust each circuit breaker's protection settings.

[0004] This approach has significant limitations: First, manual operation is inefficient, especially in complex power grids involving multi-level protection coordination. Calculation and adjustment at each level are time-consuming and labor-intensive, making it difficult to meet the grid's rapid response needs. Second, manual operation is prone to calculation errors, input deviations, and other problems, which may lead to false or failed protection operations, causing large-scale power outages and even equipment damage. Third, on-site operations are constrained by environmental factors, such as bad weather and inconvenient transportation in remote areas, which increases operation and maintenance costs and safety risks. Fourth, the adjustment of set values ​​lacks systematicity and linkage, making it difficult to achieve global optimization and automatic coordination of multi-level protection set values.

[0005] In addition, with the digital transformation of the power system, the traditional manual adjustment mode is seriously out of touch with the "source-grid-load-storage" coordinated operation concept of the smart grid, and cannot adapt to the development trend of automation, informatization and intelligence of the power system.

[0006] Therefore, in order to solve the above problems, it is necessary to design a modular load transfer device and method. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to solve the deficiencies in the prior art and to design a new modular load transfer device with a simple structure. The device comprises a transfer box, in which a power supply module, a signal transceiver module, a monitoring module, a prefabricated operation module and a fixed value setting module are arranged. The installation is convenient and quick. The transfer box can be directly fixed on the outside of the FTU in the substation. The device has good stability and is used as an external module of the FTU. The device is combined with the FTU to complete the load transfer of the circuit breaker. The power supply module is used to complete the power supply of the load transfer device. The signal transceiver module is used to receive and transmit signals to complete the transmission of data and instructions between the modules in the transfer box. The monitoring module is used to monitor the voltage, current, capacity and load on the line. The prefabricated operation module is used to operate the circuit breaker body to complete the specific load transfer of the circuit breaker. The fixed value setting module calculates and analyzes data such as load to complete the fixed value adjustment of each level of FTU.

[0008] After the monitoring module completes the detection of line voltage, current, capacity and load, it sends the data to the signal transceiver module, which transmits the data to the fixed value setting module through the signal transceiver module. The fixed value setting module performs calculations and analysis based on the received data, and sends the calculated fixed value to the signal transceiver module. The signal transceiver module sends the corresponding action instructions to the circuit breaker, thereby controlling the circuit breaker to perform the corresponding action. After the action is completed, feedback information is sent back to the signal transceiver module to realize real-time calculation and real-time transmission of FTU fixed values, real-time control of the closing and opening of the circuit breaker, and intelligent completion of the load transfer of the circuit breaker.

[0009] The solution adopted by the present invention to solve the technical problem is:

[0010] A modular load transfer device.

[0011] It is characterized by:

[0012] It includes a transfer box, which is fixed on the outside of the FTU in the substation.

[0013] The belt transfer box is equipped with a power supply module, a signal receiving and transmitting module, a monitoring module, a prefabricated operation module and a fixed value setting module.

[0014] The power supply module is used to supply power to each module in the belt box.

[0015] The signal transceiver module is used to receive and transmit signals.

[0016] The monitoring module is used to monitor the voltage, current, capacity and load on the line.

[0017] The prefabricated operating module is used to operate the circuit breaker body.

[0018] The fixed value setting module calculates and analyzes the load and other data, and completes the fixed value adjustment of each level FTU.

[0019] The signal transceiver module is connected to the prefabricated operation module, the monitoring module and the fixed value setting module.

[0020] As a preferred embodiment of the present invention,

[0021] A display module is also provided in the transfer box, and a prefabricated hole corresponding to the display module is provided in the transfer box.

[0022] The display module is used to display the operation interface and data information generated during the use of the load transfer device.

[0023] As a preferred embodiment of the present invention,

[0024] The fixed value setting module completes the calculation and analysis of data through the processor.

[0025] As a preferred embodiment of the present invention,

[0026] The signal transceiver module is integrated with a Bluetooth module.

[0027] As a preferred embodiment of the present invention,

[0028] The display module adopts a graphic panel display screen.

[0029] As a preferred embodiment of the present invention,

[0030] The monitoring module is provided with a reset button to support manual restart.

[0031] A modular load transfer method,

[0032] The following steps are involved:

[0033] Step S1: The monitoring module sends the monitored voltage, current, capacity and load to the fixed value setting module through the signal transceiver module.

[0034] Step S2: After receiving the data sent by the monitoring module, the fixed value setting module performs analysis and calculation, detects the FTUs existing on the line, and analyzes the first-level FTU after the load transfer, and adjusts the remaining FTUs in sequence according to the number of digits.

[0035] Step S3: The fixed value setting module sends the fixed value to the signal transceiver module.

[0036] Step S4: The signal transceiver module sends an action instruction to the prefabricated operation module.

[0037] Step S5: After the prefabricated operation module completes the corresponding action, it sends a feedback signal to the signal transceiver module.

[0038] Step S6: After receiving the feedback signal, the signal transceiver module pushes the data to the fixed value setting module.

[0039] As a preferred embodiment of the present invention,

[0040] In the process of setting the remaining FTUs in step S2, if there are branches, they need to be calculated and issued separately.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] 1. The present invention provides a modular load transfer device with a simple structure. It includes a transfer box, which is equipped with a power supply module, a signal transceiver module, a monitoring module, a prefabricated operation module, and a fixed value setting module. The transfer box is easy and quick to install. It can be directly fixed to the outside of the FTU in the substation. It has good stability and can be used as an external module of the FTU. In combination with the FTU, it completes the load transfer of the circuit breaker.

[0043] Among them, the power supply module is used to complete the power supply of the load transfer device; the signal transceiver module is used to receive and transmit signals, and complete the transmission of data and instructions between the modules in the transfer box; the monitoring module is used to monitor the voltage, current, capacity and load on the line, and the prefabricated operation module is used to operate the circuit breaker body and complete the specific load transfer of the circuit breaker; the constant value setting module calculates and analyzes load and other data, and completes the constant value adjustment of each level FTU.

[0044] After the monitoring module completes the detection of line voltage, current, capacity and load, it sends the data to the signal transceiver module, which transmits the data to the fixed value setting module through the signal transceiver module. The fixed value setting module performs calculations and analysis based on the received data, and sends the calculated fixed value to the signal transceiver module. The signal transceiver module sends the corresponding action instructions to the circuit breaker, thereby controlling the circuit breaker to perform the corresponding action. After the action is completed, feedback information is sent back to the signal transceiver module to realize real-time calculation and real-time transmission of FTU fixed values, real-time control of the closing and opening of the circuit breaker, and intelligent completion of the load transfer of the circuit breaker.

[0045] 2. A display module is installed inside the transfer box, displaying the real-time operation interface for staff to view. The display module uses a graphic panel display. This greatly enhances the display of information during the load transfer device's operation. Furthermore, the graphic panel display features touch functionality, enhancing the human-machine interaction experience when staff issue commands and improving work efficiency.

[0046] 3. The monitoring module is equipped with a reset button that supports manual restart. The reset button manually triggers a hardware restart, forcibly interrupting abnormal operating conditions and restoring module parameters to default configurations, extending the service life of the monitoring module. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a structural block diagram of a modular load transfer device proposed by the present invention;

[0048] Figure 2 This is a structural block diagram of a modular load transfer device signal transceiver module proposed by the present invention;

[0049] Figure 3 This is a structural block diagram of a modular load transfer device constant value setting module proposed by the present invention;

[0050] Figure 4 This is a structural block diagram of a modular load transfer device monitoring module proposed in the present invention;

[0051] Figure 5 A schematic flow chart of a modular load transfer method proposed in the present invention;

[0052] Figure 6 This is a schematic diagram of the circuit involved in a modular load transfer device proposed by the present invention;

[0053] Figure 7 This is a schematic diagram of the circuit involved in a modular load transfer device proposed by the present invention.

[0054] Description of reference numerals:

[0055] 1. Transfer box,

[0056] 101. Power supply module,

[0057] 102. Signal transceiver module,

[0058] 103. Monitoring module,

[0059] 104. Prefabricated operation module,

[0060] 105. Fixed value setting module,

[0061] 106. Display module,

[0062] 107. Bluetooth module,

[0063] 108. Processor,

[0064] 109. Reset button. DETAILED DESCRIPTION

[0065] The specific implementation of the present invention is described below with reference to the accompanying drawings and embodiments:

[0066] It should be noted that the structures, colors, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0067] At the same time, in the description of the present invention, it should be understood that the terms "one end", "the other end", "middle", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0068] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0069] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0070] like Figure 1-Figure 4 As shown, the present invention proposes a modular load transfer device comprising a transfer box 1, which is fixed to the outside of the feeder terminal unit (FTU) within the substation. The transfer box uses standardized interfaces for physical connection and electrical communication with the FTU, ensuring convenient installation and strong compatibility. As an external module of the FTU, it enhances the functional scalability of the FTU and, in combination with the FTU, completes the load transfer of the circuit breaker.

[0071] The Feeder Terminal Unit (FTU) is a core device in the distribution automation system. It is primarily installed at feeder switches (such as pole-mounted switches and ring main unit switches) in the distribution network to monitor and control the operating status of the feeder. It is widely used in the automation transformation of overhead lines and cable lines in urban distribution networks, and is particularly suitable for the intelligent upgrade of outdoor equipment such as ring main units and pole-mounted switches. Its core functions include:

[0072] Data acquisition and monitoring: Real-time collection of feeder voltage, current, power and other electrical quantities, as well as status quantities such as switch position and fault signals.

[0073] Fault detection and location: By analyzing changes in electrical quantities, faults such as short circuits and grounding can be quickly identified, and the fault section can be located.

[0074] Remote control and automatic control: Receive instructions from the distribution master station, remotely control the opening and closing of switches, and realize automatic scheduling of feeders (such as fault isolation and load transfer).

[0075] Communication and data transmission: Exchange data with the power distribution master station through communication networks (such as optical fiber and wireless), upload monitoring information and receive control instructions.

[0076] Directly setting up a load transfer device on the outside of the FTU (i.e., between the feeder switch and the load side) can work with the FTU to optimize distribution automation, improve power supply reliability, and shorten power outage time. When a feeder fault occurs, the FTU detects the fault signal and can immediately control the switch in the fault section to open. At the same time, it can work with the load transfer device on the outside to transfer the load in the non-fault section to other healthy lines (such as the interconnecting line) to avoid power outage on the entire line.

[0077] In addition, the impact of planned power outages can be reduced. During maintenance or line reconstruction, the load can be transferred in advance through the load transfer device to achieve "non-stop operation", improve the user's power supply reliability index, avoid local overload or underload, and reduce line losses.

[0078] Specifically, when a line fault is detected or load adjustment is required, the transfer box and the FTU work together. The FTU transmits line information to the transfer box, which processes the data and generates control instructions based on established strategies. This precisely controls circuit breaker operation, enabling rapid and safe load transfer and ensuring stable operation of the power supply system.

[0079] The transfer box 1 is provided with a power supply module 101 , a signal transceiver module 102 , a monitoring module 103 , a prefabrication operation module 104 and a fixed value setting module 105 .

[0080] The power supply module 101 is used to supply power to various modules in the transfer box 1 , such as the signal transceiver module 102 , the monitoring module 103 , the prefabrication operation module 104 and the fixed value setting module 105 .

[0081] Power supply module 101, based on existing commercial designs, utilizes a multi-channel composite power supply design, integrating components such as a power input unit, a DC-DC converter module, a lithium battery energy storage unit, and a power management chip. It supports multiple inputs, including AC220V mains, DC48V DC, and solar power. After EMI filtering and surge protection, it converts these into multi-rail stable voltage outputs. The lithium battery pack, combined with the BMS, provides 48-hour backup power. The PMIC dynamically manages power priorities, redundant switching circuits ensure seamless power supply, and a status monitoring module provides real-time feedback on abnormalities, comprehensively guaranteeing the stable operation of all modules. This provides a stable and reliable power supply for the load transfer device. Intelligent management and multiple protection mechanisms effectively enhance the device's adaptability and survivability in complex power grid environments.

[0082] The signal transceiver module 102 is used to receive and transmit signals, and complete the transmission of data and instructions between the modules in the transfer box 1.

[0083] Signal transceiver module 102 is connected to pre-configured operation module 104, monitoring module 103, and fixed value setting module 105, respectively, to facilitate data transmission between these modules. Each of these modules, including pre-configured operation module 104, monitoring module 103, and fixed value setting module 105, needs to transmit the signals generated by the monitoring and calculations to signal transceiver module 102. Based on the received signal instructions, signal transceiver module 102 sends specific circuit breaker action instructions to pre-configured operation module 104, causing pre-configured operation module 104 to control the circuit breaker to perform the corresponding action.

[0084] The monitoring module 103 is used to monitor the voltage, current, capacity and load on the line, and the prefabricated operation module 104 is used to operate the circuit breaker body and complete the specific load transfer of the circuit breaker;

[0085] After the monitoring module 103 completes the detection of line voltage, current, capacity and load, it sends the data to the signal transceiver module 102, which transmits the data to the constant value setting module 105 through the signal transceiver module 102. The constant value setting module 105 performs calculations and analysis based on the received data, and sends the calculated constant value to the signal transceiver module 102. The signal transceiver module 102 sends the corresponding action instructions to the prefabricated operation module, so that the circuit breaker is controlled by the prefabricated operation module to perform the corresponding action. After the circuit breaker action is completed, feedback information is sent to the signal transceiver module 102 again. The signal transceiver module 102 sends the feedback signal to the constant value setting module 105, and the constant value setting module 105 recalculates to realize real-time calculation and real-time transmission of the circuit breaker constant value.

[0086] Specifically, the monitoring module 103 analyzes and calculates the user usage data between two FTUs, and then sends the data to the signal transceiver module 102, which pushes the data to the fixed value setting module 105 through the signal transceiver module 102.

[0087] The fixed value setting module 105 performs calculation and analysis of load and other data to complete the fixed value adjustment of each level FTU.

[0088] In another embodiment, a display module 106 is further provided in the transfer box 1 , and the operation interface is displayed in real time through the display module 106 for staff to view.

[0089] Display module 106 is used to display the operating interface and data information generated during the use of the load transfer device. During the device operation phase, the modular interface design orderly displays the operating process instructions, parameter configuration menus, and safety confirmation pop-up windows, guiding operation and maintenance personnel through closing, opening, and mode switching instructions, significantly reducing the risk of misoperation.

[0090] In addition, the transfer box 1 is provided with a prefabricated hole corresponding to the display module 106. The display screen of the display module 106 extends out of the transfer box 1 through the prefabricated hole and is embedded in the prefabricated hole of the transfer box 1. The connected circuit components, etc. are all arranged in the transfer box 1.

[0091] In another embodiment, the fixed value setting module 105 performs data calculation and analysis through the processor 108. The essence is to convert the physical characteristics of the power system into a mathematical model and then generate a protection strategy through algorithm logic.

[0092] Preferably, processor 108 may include a built-in AI acceleration unit, forming an intelligent computing hub for the load transfer device. This integrated AI acceleration module within processor 108 can directly process and analyze voltage waveforms, current waveforms, historical fault data, and load characteristic curves uploaded by monitoring module 103 in real time, improving the data processing capabilities of constant value setting module 105 and thereby enhancing the operating efficiency of the load transfer device.

[0093] In another embodiment, the signal transceiver module 102 is integrated with a Bluetooth module 107. Data transmission via the Bluetooth module 107, leveraging the flexibility and compatibility of Bluetooth technology in the field of short-range wireless communications, ensures the stability of data interaction between the prefabrication operation module 104 and the signal transceiver module 102, between the monitoring module 103 and the signal transceiver module 102, and between the fixed value setting module 105 and the signal transceiver module 102.

[0094] Preferably, the signal transceiver module 102 integrates a Bluetooth Low Energy (BLE) module to establish a low-power, highly reliable wireless communication link. Through a dynamic sleep / wake-up mechanism, the module's standby current is consistently maintained below 10μA, reducing power consumption by over 90% compared to traditional Bluetooth solutions. This allows for months of battery life even when powered by a coin cell battery.

[0095] While ensuring real-time communication, power consumption is kept within the stringent standards of industrial-grade equipment, making it suitable for distributed outdoor applications without an external power source. The signal transceiver module 102 maintains a standby connection with microampere power consumption, allowing it to transmit data, send action commands, and receive feedback commands via Bluetooth while consuming minimal power.

[0096] In another embodiment, the display module 106 utilizes a graphic panel display. This display significantly enhances the information displayed during the operation of the load transfer device. Furthermore, the graphic panel display incorporates touch functionality, enhancing the human-computer interaction experience when issuing instructions and improving work efficiency.

[0097] The operation of a load transfer device involves numerous electrical parameters, such as current, voltage, capacity, and load. Graphical panel displays use graphical and modeling methods to transform this abstract data into visual elements such as dynamic charts and topological structures. For example, by connecting to an existing power grid control system or monitoring system, a localized connection diagram of the grid lines can be roughly simulated, visually displaying the load transfer path and the real-time status of each node. This helps personnel quickly understand the specific operation of the system and avoid misjudgments caused by complex data.

[0098] Operators can easily access required data and switch operation interfaces through simple operations such as clicking and dragging. When performing load transfer operations, the target line can be selected and transfer parameters can be set directly on the screen. Compared with traditional key operations, the human-machine interactive display is more convenient and efficient, significantly shortening the operation process and improving work efficiency.

[0099] In another embodiment, the monitoring module 103 is provided with a reset button 109 to support manual restart. The reset button 109 can manually trigger a hardware restart, forcibly interrupt the abnormal operation state, and restore the module parameters to the default configuration.

[0100] like Figure 5 As shown, a modular load transfer method includes the following steps:

[0101] The following steps are involved:

[0102] Step S1: The monitoring module 103 sends the monitored voltage, current, capacity and load to the fixed value setting module 105 through the signal transceiver module 102.

[0103] Step S2: After receiving the data sent by the monitoring module 103, the fixed value setting module 105 performs analysis and calculation, detects the FTUs existing on the line, and analyzes the first-level FTU after the load transfer, and adjusts the remaining FTUs in sequence according to the number of digits.

[0104] Step S3: The fixed value setting module 105 sends the fixed value to the signal transceiver module 102, and the data transmission is completed through the signal transceiver module 102.

[0105] Step S4: The signal transceiver module 102 sends an action instruction to the prefabricated operation module 104, and the prefabricated operation module 104 controls the corresponding circuit breaker action.

[0106] Step S5: After the prefabrication operation module 104 completes the corresponding action, it sends a feedback signal to the signal transceiver module 102.

[0107] Step S6: After receiving the feedback signal, the signal transceiver module 102 pushes the data to the fixed value setting module 105.

[0108] In step S5, when there are branches in the setting process of the remaining FTUs, they need to be calculated and issued separately. However, the branch setting value must be smaller than the previous level setting value.

[0109] As an embodiment of the present invention, Figure 6 As shown in the figure, if the line is in the case of load transfer, only circuit breaker No. 1 needs to be operated. After the operation of circuit breaker No. 1 is completed, the signal is fed back to the signal transceiver module 102, and the signal transceiver module 102 then sends it to the fixed value setting module 105. After calculation and analysis, the fixed value setting module 105 sends an instruction to the corresponding prefabricated operation module 104, that is, the load transfer device then issues a command to circuit breaker No. 2. After receiving this signal, 2 transmits it to the prefabricated operation module 104, and then the circuit breaker body is opened and closed, and the load transfer is quickly completed. That is, after the operation of circuit breaker No. 1 is completed, circuit breaker No. 2 will automatically open.

[0110] As an embodiment of the present invention, Figure 7As shown, if a fault occurs at the front end of circuit breaker No. 1, circuit breakers No. 2, No. 3, and No. 4 transmit electrical data to the fixed value setting module 105. This module automatically analyzes the data and calculates and analyzes the fixed value. This fixed value is then sent to the signal transceiver module 102. The signal transceiver module 102 sends an action instruction to the pre-set operation module 104. The pre-set operation module 104 automatically controls circuit breaker No. 1 to disconnect. Circuit breaker No. 5 is also automatically switched on by its corresponding pre-set operation control. Based on the established line connection, circuit breaker No. 5 automatically closes after analyzing the signals sent by other FTUs. When circuit breaker No. 5 is closed, the line load changes, and the fixed values ​​of circuit breakers No. 2, No. 3, and No. 4 are automatically modified.

[0111] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the scope of the present invention.

[0112] Many other changes and modifications can be made without departing from the spirit and scope of the present invention. It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A modular load transfer device, It is characterized by: It includes a transfer box, which is fixed on the outside of the FTU in the substation. The belt transfer box is equipped with a power supply module, a signal receiving and transmitting module, a monitoring module, a prefabricated operation module and a fixed value setting module. The power supply module is used to supply power to each module in the belt box. The signal transceiver module is used to receive and transmit signals. The monitoring module is used to monitor the voltage, current, capacity and load on the line. The prefabricated operating module is used to operate the circuit breaker body. The fixed value setting module calculates and analyzes the load and other data, and completes the fixed value adjustment of each level FTU. The signal transceiver module is connected to the prefabricated operation module, the monitoring module and the fixed value setting module.

2. A modular load transfer device according to claim 1, It is characterized by: A display module is also provided in the transfer box, and a prefabricated hole corresponding to the display module is provided in the transfer box. The display module is used to display the operation interface and data information generated during the use of the load transfer device.

3. A modular load transfer device according to claim 1, It is characterized by: The fixed value setting module completes the calculation and analysis of data through the processor.

4. A modular load transfer device according to claim 1, It is characterized by: The signal transceiver module is integrated with a Bluetooth module.

5. A modular load transfer device according to claim 2, It is characterized by: The display module adopts a graphic panel display screen.

6. A modular load transfer device according to claim 1, It is characterized by: The monitoring module is provided with a reset button to support manual restart.

7. The modular load transfer device according to claim 1, It is characterized by: A modular load transfer method, using the modular load transfer device according to claim 1, It is characterized by: The following steps are involved: Step S1: The monitoring module sends the monitored voltage, current, capacity and load to the fixed value setting module through the signal transceiver module. Step S2: After receiving the data sent by the monitoring module, the fixed value setting module performs analysis and calculation, detects the FTUs existing on the line, and analyzes the first-level FTU after the load transfer, and adjusts the remaining FTUs in sequence according to the number of digits. Step S3: The fixed value setting module sends the fixed value to the signal transceiver module. Step S4: The signal transceiver module sends an action instruction to the prefabricated operation module. Step S5: After the prefabricated operation module completes the corresponding action, it sends a feedback signal to the signal transceiver module. Step S6: After receiving the feedback signal, the signal transceiver module pushes the data to the fixed value setting module.

8. A modular load transfer device according to claim 7, It is characterized by: In the process of setting the remaining FTUs in step S2, if there are branches, they need to be calculated and issued separately.

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