Intelligent power supply transfer control branch box

Abstract

This utility model belongs to the technical field of power construction auxiliary tools. It discloses an intelligent power supply switching control branch box, comprising: a box body, an inlet socket and an outlet socket disposed on the surface of the box body, and a first protection module, a second protection module, and low-voltage cables disposed inside the box body. The number of outlet sockets is at least two, and the number of second protection modules is the same as the number of outlet sockets. The inlet sockets are connected to the first protection module via low-voltage cables. After passing through the first protection module, the low-voltage cables branch into branch cables, which are connected to corresponding second protection modules and then to corresponding outlet sockets after passing through the second protection modules. The second protection module includes a circuit breaker, a withdrawable assembly, and an electric operating device, which is linked to the circuit breaker. The first protection module is also connected to the circuit breaker via a control circuit. This utility model aims to improve the safety of power supply protection operations.

Description

Technical Field

[0001] This utility model relates to the field of power construction auxiliary tools, and in particular to an intelligent power supply transfer control branch box. Background Technology

[0002] With the development of science and technology, the requirements for the reliability and continuity of power supply in people's lives and in enterprise production are becoming increasingly higher. To ensure users' normal electricity needs, power supply assurance work is indispensable. At the power supply assurance site, due to limited site conditions or the limited number of generator trucks, one generator truck typically needs to support two or more transformer substations and multiple outgoing lines. In this case, distinguishing between different access points is crucial. If incorrect connections occur, it can lead to serious safety problems such as phase-to-phase short circuits. However, currently, on-site monitoring during power generation generally relies on on-duty personnel, which cannot monitor the outgoing lines of each branch in real time, posing a safety hazard of short circuits due to incorrect phase sequence.

[0003] In summary, the technical problems existing in the relevant technologies need to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide an intelligent power supply transfer control branch box to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The solution to the technical problem of this utility model is:

[0006] A smart power supply transfer control branch box is provided, the smart power supply transfer control branch box includes: a box body, an inlet socket and an outlet socket disposed on the surface of the box body, and a first protection module, a second protection module and a low-voltage cable disposed inside the box body;

[0007] The number of outgoing sockets is at least 2. The number of second protection modules is the same as the number of outgoing sockets. The incoming socket is connected to the first protection module through the low-voltage cable. After passing through the first protection module, the low-voltage cable is split into branch cables with the same number of outgoing sockets. The branch cables are connected to the corresponding second protection modules respectively, and after passing through the second protection modules, they are connected to the corresponding outgoing sockets respectively.

[0008] The second protection module includes a circuit breaker, a withdrawable kit, and an electric operating device. The withdrawable kit serves as a mounting base for the circuit breaker, allowing for hot-swapping of the circuit breaker. The electric operating device is linked to the circuit breaker and is used to control the closing or opening of the circuit breaker via an external signal.

[0009] The first protection module is also connected to the circuit breaker via a control circuit.

[0010] In some embodiments, the second protection module further includes a microcomputer controller and an electronic trip unit, wherein the microcomputer controller is used to control the electronic trip unit to trip, and the electronic trip unit is used to control the closing or opening of the circuit breaker in conjunction with the circuit breaker.

[0011] In some embodiments, the second protection module further includes a low-voltage line protection device, the output terminal of the circuit breaker is connected to the input terminal of the low-voltage line protection device, and the digital output terminal of the low-voltage line protection device is connected to the circuit breaker through the control circuit.

[0012] In some embodiments, the second protection module further includes a plurality of current transformers corresponding to the three, one end of each current transformer being connected to the current input terminal of the low-voltage line protection device, the other ends of the plurality of current transformers being connected, and the other ends of the current transformers being connected to the ground terminal and the current return terminal of the low-voltage line protection device, respectively.

[0013] In some embodiments, the second protection module further includes a phase sequence protector, the output terminal of the circuit breaker is connected to the input terminal of the phase sequence protector, the output terminal of the phase sequence protector is connected to the circuit breaker through the control circuit, and the phase sequence protector is used to control the electronic trip unit to trip according to the phase sequence detection result.

[0014] In some embodiments, the control circuit includes a relay, and the phase sequence protector is connected to the circuit breaker via the relay.

[0015] In some embodiments, the second protection module further includes a warning light, which is used to determine whether to light up to provide an alarm based on the phase sequence detection result.

[0016] In some embodiments, the first protection module includes a low-voltage line protection device and a phase sequence protector, and the incoming line socket is connected to the input terminal of the low-voltage line protection device and the input terminal of the phase sequence protector respectively through the low-voltage cable.

[0017] In some embodiments, the surface of the enclosure is further provided with a control panel, which is used to display the detection results of the first protection module for the low-voltage cable and the second protection module for the branch cable, and is also used to receive external operations and control the circuit breaker to close or open according to the external operations.

[0018] In some embodiments, the intelligent power supply transfer control branch box further includes rollers and a handle, with the rollers located at the bottom of the box and the handle located at the top of the box.

[0019] The beneficial effects of this utility model are as follows: The intelligent power supply transfer and control branch box is constructed by setting up a box, with an inlet and outlet socket on the box surface, and a first protection module, a second protection module, and low-voltage cables inside the box. The low-voltage cable connected to the inlet socket is branched into branch cables after passing through the first protection module, and then connected to at least two outlet sockets after passing through the second protection module, thus achieving branching of power supply. Furthermore, the second protection module includes a circuit breaker, a withdrawable assembly, and an electric operating device. The first protection module is also connected to the circuit breaker via a control circuit. Compared to manual monitoring, this application achieves intelligent and automated monitoring through the first and second protection modules. Furthermore, the combination of the circuit breaker, withdrawable assembly, and electric operating device enables intelligent and automated control of circuit closing or opening based on monitoring results or remote external operation, thereby timely preventing and eliminating potential safety issues at the power supply site and improving the safety of power supply operations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an intelligent power supply transfer control branch box according to the present invention;

[0022] Figure 2 This is a schematic diagram of the connection relationship of an intelligent power supply transfer control branch box according to the present invention;

[0023] Figure 3 This is a circuit diagram of the low-voltage line protection device of this utility model;

[0024] Figure 4 This is a circuit diagram of the phase sequence protector of this utility model;

[0025] Figure 5 This is another structural schematic diagram of an intelligent power supply transfer control branch box according to the present invention.

[0026] In the diagram: Box - 100, Inlet socket - 200, Outlet socket - 300, First protection module - 400, Second protection module - 500, Control panel - 600, Handle - 700, Roller - 800, First three-phase fuse - FU1, Second three-phase fuse - FU2, Current transformer - 1TAa, 1Tab, 1Tac, Relay - KA, Circuit breaker - QF, Warning light - HY. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] It should be noted that although functional modules are divided in the system diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the system or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] In related technologies, whether for residential life or industrial production, the requirements for the reliability and continuity of power supply are increasingly higher. To ensure users' normal power needs, power supply guarantee work is essential, whether for emergency power supply or power system maintenance. At the power supply guarantee site, due to limited site conditions or the limited number of generator trucks, one generator truck typically needs to support two or more transformer substations and multiple outgoing lines. Therefore, distinguishing between different access points is crucial. If incorrect connections occur, it can lead to serious safety problems such as phase-to-phase short circuits. However, currently, on-site monitoring during power generation generally relies on on-duty personnel, which cannot monitor the outgoing lines of each branch in real time, posing a safety hazard of short circuits due to incorrect phase sequence.

[0030] Figure 1 This is a schematic diagram of the structure of an intelligent power supply transfer control branch box provided in an embodiment of this application. Figure 1 The intelligent power supply transfer control branch box may include, but is not limited to: a box body 100, an inlet socket 200 and an outlet socket 300 disposed on the surface of the box body 100, and a first protection module 400, a second protection module 500 and a low-voltage cable disposed inside the box body 100. Figure 1 (Not shown).

[0031] The number of outgoing sockets 300 is at least 2. The number of second protection modules 500 is the same as the number of outgoing sockets 300. The incoming socket 200 is connected to the first protection module 400 via a low-voltage cable. After passing through the first protection module 400, the low-voltage cable branches into branch cables, which are the same number as the number of outgoing sockets 300. Each branch cable is connected to the corresponding second protection module 500, and after passing through the second protection module 500, it is connected to the corresponding outgoing socket 300.

[0032] The second protection module 500 includes a circuit breaker QF, a withdrawable kit, and an electric operating device. The withdrawable kit serves as a mounting base for the circuit breaker QF, allowing for hot-swapping of the circuit breaker QF. The electric operating device is linked to the circuit breaker QF and is used to remotely control the closing or opening of the circuit breaker QF via an external signal.

[0033] The first protection module 400 is also connected to the circuit breaker QF via a control circuit.

[0034] Specifically, the enclosure 100 is used to house the structure in the branch box, providing protection and a mounting panel for the structure installed on the surface of the enclosure 100. Both the inlet socket 200 and the outlet socket 300 are three-phase four-wire sockets, each with a socket for inserting three phase wires and one neutral wire. The inlet socket 200 and outlet socket 300 are structurally identical; the distinction lies solely in their internal connection relationships. In this embodiment, the number of outlet sockets 300 is at least two. Taking two outlet sockets as an example, two outlet sockets 300 can branch the incoming power supply to two outlet sockets 300 for output, thereby supporting two or more transformer substations. In other embodiments, the number of inlet sockets 200 can also be multiple, thus achieving diverse power supply distribution configurations such as one inlet and two outlets, or two inlet and two outlets.

[0035] On the other hand, regarding the connection relationship between the input socket 200, the first protection module 400, the second protection module 500, and the output socket 300, please refer to... Figure 2 Inside the enclosure 100, the first protection module 400 and the second protection module 500 are integrated and disposed on the front side of the middle part of the enclosure 100, therefore... Figure 1 The first protection module 400 and the second protection module 500 are indicated only to show their integrated installation location. Figure 1The specific structures of the first protection module 400 and the second protection module 500 are not shown. Both the first protection module 400 and the second protection module 500 have the functions of detecting and protecting the circuit, can detect the electrical data of the passing cable, and intelligently control the closing or opening of the switch according to the detection results of the electrical data, so as to intelligently control the process of ensuring power supply. Among them, the first protection module 400 is connected to the low-voltage cable just connected at the incoming line socket 200. For the convenience of description, the low-voltage cable connected from the incoming line socket 200 is defined as the main cable. Based on this, the first protection module 400 is equivalent to the input terminal circuit in the protection branch box. After passing through the first protection module 400, the main cable branches, and at least 2 branch cables are divided. The branch cables correspond to the outgoing line sockets 300. At the same time, the second protection module 500 also corresponds to the outgoing line sockets 300, corresponding to different power supply output areas. Each branch cable is respectively connected to the corresponding second protection module 500 and is connected to the corresponding outgoing line socket 300 after passing through the second protection module 500, which is equivalent to the second protection module 500 protecting the output terminal circuit in the branch box, so as to complete the connection of the power supply output to the corresponding area. It should be noted that in this embodiment, both the main cable and the branch cable belong to low-voltage cables and are used to transmit electric energy under low-voltage conditions.

[0036] Further, the second protection module 500 includes a circuit breaker QF, a draw-out kit and an electric operating device. Among them, the circuit breaker QF is a conventional electrical device used for protection and operation in the electrical system, and is a switching device that can close, carry and break the current under normal or abnormal circuit conditions, so as to protect the power supply line and the motor, etc.; the draw-out kit and the electric operating device are supporting structures of the circuit breaker QF. The draw-out kit serves as the installation base of the circuit breaker QF, and its built-in guide rails and contact systems ensure the electrical connection alignment when the circuit breaker QF is drawn out or inserted. In addition, it also includes an operating mechanism for controlling the drawing out or insertion of the circuit breaker QF, and a safety locking device for preventing the circuit breaker QF from being accidentally drawn out during operation, etc. Based on this draw-out kit, the circuit breaker QF can be drawn out or inserted into the box body 100 of the branch box without power-off, which is convenient for on-site staff to carry out maintenance, repair or replacement, and improves the efficiency of ensuring power supply work; the electric operating device is a dedicated electric operating mechanism of the circuit breaker QF, such as the power-on type electric operating mechanism of Schneider circuit breaker. The electric operating device can be driven by an external power supply and control the opening or closing of the circuit breaker QF according to an external signal. This external signal can be obtained by triggering a button on the box body 100 or by remotely connecting to other devices or systems, so as to realize the remote electric control of the closing or opening of the circuit breaker QF through the electric operating device.

[0037] In addition to the connection of the low-voltage cable for transmitting electrical energy between the first protection module 400 and the second protection module 500, the first protection module 400 is also connected to the circuit breaker QF of the second protection module 500 through a control circuit. This allows the detection results of the electrical data of the main cable in the first protection module 400 to be transmitted to the second protection module 500 through the control circuit, affecting the closing or opening of the circuit breaker QF, thereby establishing protection for the main cable at the input end of the branch box.

[0038] Compared to manual monitoring, this application uses a first protection module 400 and a second protection module 500 for intelligent and automated monitoring. By combining a circuit breaker QF, a withdrawable kit, and an electric operating device, it achieves intelligent and automated control of circuit closing or opening based on monitoring results or external remote operation. This allows for timely prevention and elimination of potential safety issues at the power supply site, thereby improving the safety of power supply work.

[0039] In some embodiments, the second protection module 500 further includes a microcomputer controller and an electronic trip unit. The microcomputer controller is used to control the electronic trip unit to trip, and the electronic trip unit is used to control the closing or opening of the circuit breaker QF in conjunction with the circuit breaker.

[0040] Specifically, the microcomputer controller can analyze the detection results of electrical data and determine specific intelligent control strategies based on this analysis. It can determine whether a situation arises during power supply protection operations that requires controlling the circuit breaker QF to close or open. This control is achieved through an electronic trip unit, which is linked to the circuit breaker QF. When the microcomputer controller determines that the circuit breaker QF needs to open, it can control the electronic trip unit to trip, thereby causing the circuit breaker QF to open and completing the opening operation. Based on this, the microcomputer controller improves the diversity of control strategies in power supply protection operations and enhances the safety of power supply protection operations through the high sensitivity and high breaking speed of the electronic trip unit.

[0041] In some embodiments, the second protection module 500 further includes a low-voltage line protection device, the output terminal of the circuit breaker QF is connected to the input terminal of the low-voltage line protection device, and the digital output terminal of the low-voltage line protection device is connected to the circuit breaker QF through a control circuit.

[0042] Specifically, the low-voltage line protection device works in conjunction with the circuit breaker QF to control the circuit on and off through signal linkage. Its core function is to detect parameters such as current and voltage in the circuit in real time, detect problems such as overcurrent, leakage current and phase loss, and trigger protection actions through the preset logic inside the device when the above problems occur, thereby improving the safety of power supply.

[0043] Regarding the connection, the branch cable passes through circuit breaker QF and is connected from its output terminal, as per [reference needed]. Figure 3 ,by Figure 3 Taking the pinout of the low-voltage line protection device as an example, the three-phase lines L1, L2, and L3 are connected to pins 11, 12, and 13 of the low-voltage line protection device respectively through the first three-phase fuse FU1. Phase A (L1) is also connected to pin 1 after passing through the first three-phase fuse FU1, and the neutral line N is connected to pins 14 and 2 respectively. On the other hand, since the low-voltage line protection device itself does not have the ability to directly cut off the circuit, its digital output terminal (not shown in the figure) is connected to the circuit breaker QF through a control circuit. This control circuit is a circuit other than the branch cable used to transmit control signals. Based on this control circuit, the low-voltage line protection device can send a trip signal to the circuit breaker QF when a problem is detected, and the circuit breaker QF will perform a tripping operation, thereby cutting off the circuit.

[0044] In some embodiments, the second protection module 500 further includes a plurality of current transformers corresponding to the third, one end of each current transformer being connected to the current input terminal of the low-voltage line protection device, the other ends of the plurality of current transformers being connected, and the other ends of the current transformers being connected to the ground terminal and the current return terminal of the low-voltage line protection device, respectively.

[0045] Reference Figure 3 The circuit related to the low-voltage line protection device also includes current transformers corresponding to three phases. In this embodiment, the number of current transformers is three, corresponding to three phases, and they are defined as 1TAa, 1TAb, and 1TAc respectively. The current transformers are used to collect current signals from branch cables, convert analog quantities to digital quantities, and connect one end to the current input terminal of the low-voltage line protection device, i.e., Figure 3 The Ia*, Ib*, and Ic* pins shown are connected to enable sampling of the current signal on the secondary side. Compared with the connected three-phase line, which mainly provides information on the direction of the voltage signal, the secondary side of the current transformer mainly provides information on the direction of the current signal. This allows the low-voltage line device to more comprehensively detect the electrical data of the branch cable and improve the safety of power supply.

[0046] Meanwhile, the other end of the current transformer, after being connected in parallel, is connected to the grounding terminal and the current return terminal of the low-voltage line protection device, respectively. The current return terminal includes pins Ia, Ib, and Ic. Based on this, the low-voltage line protection device can combine the output energy of the switching power supply and the secondary side of the current transformer to achieve dual power supply, thereby improving the stability of the intelligent power supply transfer control branch box.

[0047] In some embodiments, the second protection module 500 further includes a phase sequence protector, the output terminal of the circuit breaker QF is connected to the input terminal of the phase sequence protector, the output terminal of the phase sequence protector is connected to the circuit breaker QF through a control circuit, and the phase sequence protector is used to control the electronic trip unit to trip according to the phase sequence detection result.

[0048] Specifically, the phase sequence protector is used to detect the phase sequence of the three-phase power supply to prevent motor reversal and thus accidents or equipment damage caused by incorrect phase sequence, such as incorrect connection of the three-phase live wires. In addition to the function of phase sequence protection, the phase sequence protector can also realize multiple protections such as phase loss protection, overvoltage or undervoltage protection and three-phase voltage imbalance protection, thereby improving the safety of power supply work.

[0049] Regarding the connection, the branch cable passes through circuit breaker QF and is connected from its output terminal, as per [reference needed]. Figure 4 ,by Figure 4 Taking the phase sequence protector pins as an example, the three-phase lines L1, L2, and L3 are connected to the L1, L2, and L3 pins of the phase sequence protector respectively through the second three-phase fuse FU2, and the neutral line N is connected to the N pin. Furthermore, the A-phase line (L1) is also connected to pin 14 after passing through the second three-phase fuse FU2, and the neutral line N is also connected to pin 11. The phase sequence protector is also connected to the control circuit through pins 11 and 14, and is connected to the circuit breaker QF through the control circuit. Figure 4 In the diagram, the circuit breaker is represented by QF. It should be noted that in actual circuits, the phase sequence protector trips by controlling the electronic trip unit. Based on the linkage between the electronic trip unit and the circuit breaker QF, the circuit breaker QF is controlled to open. Because the electronic trip unit and the circuit breaker QF are physically linked, therefore... Figure 4 In both this embodiment and the previous one, the phase sequence protector and the circuit breaker QF are connected.

[0050] Based on this, the phase sequence protector determines whether there is a problem with the circuit according to the phase sequence detection results. When it is necessary to disconnect the circuit, the electronic trip unit is controlled by the control circuit to trip, thereby causing the circuit breaker QF to perform a tripping operation and disconnect the circuit.

[0051] In some embodiments, the control circuit includes a relay KA, and the phase sequence protector is connected to the circuit breaker QF through the relay KA.

[0052] Reference Figure 4 Pin 11 of the phase sequence protector is connected to relay KA. Relay KA is used for signal transmission, logic expansion, and circuit isolation. It can amplify low-power signals to drive high-power loads. Through relay KA connected to pin 11, it can affect the normally open contacts connected to pins 1 and 2 of circuit breaker QF. Figure 4(Similarly, KA is used as an analogy in this example). When it is necessary to disconnect the circuit, controlling the normally open contact to close will enable the electronic trip unit to trip and the circuit breaker QF to open.

[0053] By adding a relay KA, the safety of the circuit can be further improved by utilizing the device characteristics of the relay KA, thereby enhancing the safety of the power supply operation.

[0054] In some embodiments, the second protection module 500 further includes a warning light HY, which is used to determine whether to light up to provide an alarm prompt based on the phase sequence detection result.

[0055] Reference Figure 4 The circuit related to the phase sequence protector also includes an alarm light HY and a first preset switch for alarm output. Specifically, pin 14 of the phase sequence protector is connected to one end of the first preset switch, and the neutral line N is connected to one end of the alarm light HY. The other end of the alarm light HY is connected to the other end of the first preset switch. Inside the phase sequence protector, there is also a second preset switch between pins 11 and 14. When the phase sequence protector detects an abnormality in the circuit, both the first and second preset switches will close, at which point the alarm light HY will illuminate, alerting the staff. Therefore, in addition to the intelligent automatic circuit cutoff, this embodiment can also alert the staff through the alarm light HY, thereby directly notifying the staff to handle the abnormality in the circuit and improving the safety of power supply operations.

[0056] In some embodiments, the first protection module 400 includes a low-voltage line protection device and a phase sequence protector, and the input socket 200 is connected to the input terminal of the low-voltage line protection device and the input terminal of the phase sequence protector respectively via a low-voltage cable.

[0057] Referring to the foregoing embodiments, the second protection module 500 is used to protect the output end of a specific branch cable after the main cable branches off, while the first protection module 400 is used to protect the input end of the main cable. The first protection module 400 includes a low-voltage line protection device and a phase sequence protector. The connection method and function of its related circuits can be referred to the description of the foregoing embodiments. However, unlike the low-voltage line protection device and phase sequence protector in the second protection module 500 of the foregoing embodiments, the first protection module 400 does not have a separate circuit breaker. Therefore, in order for the low-voltage line protection device and phase sequence protector of the first protection module 400 to detect circuit abnormalities and control the circuit to be cut off, the low-voltage line protection device and phase sequence protector of the first protection module 400 are connected to the circuit breaker QF of the second protection module 500 through a control circuit to cut off the circuit from the branch cable. It can be understood that when the main cable detects a circuit abnormality, the corresponding circuit breaker QF on the branch cable should be tripped to ensure that the main cable is disconnected.

[0058] In other embodiments, if the number of incoming sockets 200 is set to more than one, the intelligent power supply transfer control branch box can realize the two-in-two-out equal power supply diversion configuration. In this case, based on the correspondence between the main cable and the branch cable of the branch line, the connection relationship between the low-voltage line protection device and phase sequence protector of the first protection module 400 and the circuit breaker QF of the second protection module 500 is determined.

[0059] By installing low-voltage line protection devices and phase sequence protectors on the main cable at the input end, there are devices for detecting circuit abnormalities from the input end to the output end inside the enclosure 100, ensuring that circuit abnormalities during the power supply process can be detected in a timely and accurate manner, thereby improving the safety of power supply work.

[0060] In some embodiments, refer to Figure 5 The surface of the enclosure 100 is also provided with a control panel 600. The control panel 600 is used to display the detection results of the first protection module 400 for low-voltage cables and the second protection module 500 for branch cables. It is also used to receive external operations and control the circuit breaker QF to close or open according to the external operations.

[0061] Specifically, the control panel 600 can display relevant electrical data detected by the low-voltage line protection device and phase sequence protector in the above embodiments, enabling on-site personnel to make accurate manual judgments based on the data displayed on the control panel 600, rather than relying solely on the intelligent judgment of the intelligent power supply transfer control branch box, thereby improving the accuracy of decision-making operations during the power supply protection process.

[0062] In addition, refer to Figure 5Below the control panel 600 is a schematic diagram of the electric operating device of the second protection module 500. Based on the operating buttons and electric operating device set on the control panel 600, the operator can directly control the circuit breaker QF in the second protection module 500 to open or close by triggering the operating buttons on the control panel 600. This improves the convenience of manual operation for closing or opening the circuit breaker. Furthermore, since remote electric control avoids direct physical contact, it also improves the safety of closing or opening operations.

[0063] In some embodiments, reference Figure 5 The intelligent power supply transfer control branch box also includes a roller 800 and a handle 700. The roller 800 is located at the bottom of the box 100, and the handle 700 is located at the top of the box 100.

[0064] by Figure 5 Taking the box 100 shown as an example, the number of rollers 800 is at least four, with each roller 800 located at one corner of the bottom of the box 100. In other embodiments, the rollers 800 can be configured as rollers with steering functions. In addition, a similar feature is also provided on the top of the box 100. Figure 5 The handle 700 shown is not limited to a specific shape in this embodiment; it is merely an example for reference. The handle 700 is simply defined as providing a gripping position for dragging the box 100. The cooperation between the rollers 800 and the handle 700 makes the intelligent power supply transfer control branch box of this embodiment easy for workers to drag, facilitating access to various power supply work sites and improving the efficiency of power supply operations.

[0065] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. An intelligent power supply guaranteeing switching control branch box, characterized in that, The intelligent power supply transfer control branch box includes: a box body, an inlet socket and an outlet socket disposed on the surface of the box body, and a first protection module, a second protection module and a low-voltage cable disposed inside the box body; The number of outgoing sockets is at least 2. The number of second protection modules is the same as the number of outgoing sockets. The incoming socket is connected to the first protection module through the low-voltage cable. After passing through the first protection module, the low-voltage cable is split into branch cables with the same number of outgoing sockets. The branch cables are connected to the corresponding second protection modules respectively, and after passing through the second protection modules, they are connected to the corresponding outgoing sockets respectively. The second protection module includes a circuit breaker, a withdrawable kit, and an electric operating device. The withdrawable kit serves as a mounting base for the circuit breaker, allowing for hot-swapping of the circuit breaker. The electric operating device is linked to the circuit breaker and is used to control the closing or opening of the circuit breaker via an external signal. The first protection module is also connected to the circuit breaker via a control circuit.

2. The intelligent power supply guaranteeing transfer control branch box according to claim 1, characterized in that, The second protection module also includes a microcomputer controller and an electronic trip unit. The microcomputer controller is used to control the electronic trip unit to trip, and the electronic trip unit is used to control the closing or opening of the circuit breaker in conjunction with the circuit breaker.

3. The intelligent power supply transfer control branch box according to claim 1, characterized in that, The second protection module also includes a low-voltage line protection device. The output terminal of the circuit breaker is connected to the input terminal of the low-voltage line protection device, and the digital output terminal of the low-voltage line protection device is connected to the circuit breaker through the control circuit.

4. The intelligent power supply transfer control branch box according to claim 3, characterized in that, The second protection module also includes a plurality of current transformers corresponding to the three. One end of each current transformer is connected to the current input terminal of the low-voltage line protection device, and the other ends of the plurality of current transformers are connected together. The other ends of the current transformers are also connected to the grounding terminal and the current return terminal of the low-voltage line protection device, respectively.

5. The intelligent power supply transfer control branch box according to claim 2, characterized in that, The second protection module also includes a phase sequence protector. The output terminal of the circuit breaker is connected to the input terminal of the phase sequence protector. The output terminal of the phase sequence protector is connected to the circuit breaker through the control circuit. The phase sequence protector is used to control the electronic trip unit to trip based on the phase sequence detection result.

6. The intelligent power supply transfer control branch box according to claim 5, characterized in that, The control circuit includes a relay, and the phase sequence protector is connected to the circuit breaker through the relay.

7. The intelligent power supply transfer control branch box according to claim 5, characterized in that, The second protection module also includes a warning light, which is used to determine whether to light up to provide an alarm based on the phase sequence detection result.

8. The intelligent power supply transfer control branch box according to any one of claims 1 to 7, characterized in that, The first protection module includes a low-voltage line protection device and a phase sequence protector. The incoming line socket is connected to the input terminal of the low-voltage line protection device and the input terminal of the phase sequence protector respectively through the low-voltage cable.

9. The intelligent power supply transfer control branch box according to any one of claims 1 to 7, characterized in that, The surface of the enclosure is also provided with a control panel, which is used to display the detection results of the first protection module for the low-voltage cable and the second protection module for the branch cable, and is also used to receive external operations and control the circuit breaker to close or open according to the external operations.

10. The intelligent power supply transfer control branch box according to any one of claims 1 to 7, characterized in that, The intelligent power supply transfer control branch box also includes rollers and a handle. The rollers are located at the bottom of the box, and the handle is located at the top of the box.

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