Emergency AC array cabinet

Abstract

The invention relates to the technical field of power devices, and provides an emergency AC array cabinet, which comprises a cabinet body provided with an accommodating cavity; the input assembly is arranged in the accommodating cavity, and the first end is electrically connected with an external power supply and the ground; the first end of the main circuit breaker is electrically connected with the second end of the input assembly; a plurality of output assemblies, wherein each output assembly comprises a branch circuit breaker and an output joint; and the monitoring module comprises a main monitoring module and a plurality of branch monitoring modules. According to the emergency alternating-current array cabinet provided by the invention, the array cabinet can realize fine control on power supply by integrating the main circuit breaker and the plurality of output assemblies. When the commercial power supply breaks down, the array cabinet can be rapidly switched to an external power supply if the array cabinet is matched with the external power supply, thereby ensuring continuous power supply of the key load, and improving the power supply reliability of the whole system. And meanwhile, through real-time dynamic verification and phase collaborative analysis, the problem of monitoring distortion of the traditional array cabinet is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power devices, and in particular, to an emergency AC main distribution cabinet. Background Art

[0002] In key facilities such as data centers, large computer rooms, and factories, ensuring the continuous power supply of important loads is crucial for maintaining business continuity and production efficiency. To achieve this goal, these places usually equipped with a backup power supply system to cope with possible failures of the mains power supply. The backup power supply system can quickly switch when the mains power supply is interrupted, providing uninterrupted power supply for critical loads.

[0003] However, the placement method of traditional main distribution cabinets and their characteristics of relying on the mains power supply will cause the main distribution cabinets to malfunction after the mains power supply is cut off, thereby affecting the operation of equipment such as the lower network cabinets. Summary of the Invention

[0004] The present invention provides an emergency AC main distribution cabinet to solve the problem that the existing electric cabinet cannot cooperate to supply power after the mains power is cut off.

[0005] The present invention provides an emergency AC main distribution cabinet, including: A cabinet body forming an accommodation cavity; An input component disposed in the accommodation cavity, with the first end being electrically connected to an external power supply and the ground; A main circuit breaker, with the first end electrically connected to the second end of the input component; A plurality of output components, each output component including a branch circuit breaker and an output connector. Each of the branch circuit breakers is electrically connected to the second end of the main circuit breaker through a parallel busbar, and the output connector is electrically connected to the busbar through its corresponding branch circuit breaker for electrically connecting to an external load through the output connector; A monitoring module including a main monitoring module and a plurality of branch monitoring modules; each of the branch monitoring modules is electrically connected to its corresponding branch circuit breaker, and the main monitoring module is electrically connected to each of the branch monitoring modules; Wherein, the main monitoring module is configured to receive the instantaneous branch current values and phase data uploaded in real time by each of the branch monitoring modules, perform dynamic difference verification on the algebraic sum of the instantaneous branch current values and the total current value of the busbar, and trigger a branch current calibration instruction when the verification deviation in consecutive multiple sampling periods exceeds a set threshold; synchronously verify the phase data of the main monitoring module and each of the branch monitoring modules, and when the phase difference detected by any of the branch monitoring modules is greater than a preset value, mark the abnormal branch corresponding to each of the branch monitoring modules based on the phase difference gradient distribution.

[0006] An emergency AC main distribution cabinet provided by the present invention, wherein the input assembly includes: an input connector, a grounding line, and a phase line; The input connector is electrically connected to the output connector through the phase line, the main circuit breaker, and one of the branch circuit breakers in sequence; One end of the grounding line is connected to the ground, and the other end is electrically connected to each output connector; The monitoring module is electrically connected to the main circuit breaker and the branch circuit breakers.

[0007] An emergency AC main distribution cabinet provided by the present invention, the emergency AC main distribution cabinet further includes: A sampling module, electrically connected to each branch circuit breaker and communicatively connected to the monitoring module, collects on / off signals of the corresponding several branch circuit breakers and transmits them to the monitoring module.

[0008] An emergency AC main distribution cabinet provided by the present invention, the main monitoring module includes a central processing unit and a difference verification unit, and the branch monitoring module includes a current sensor and a high-speed sampling circuit; The current sensor is installed at the input terminal corresponding to the branch circuit breaker, and is used to capture current waveform data at a sampling frequency not lower than 10 kHz; The difference verification unit is configured to perform real-time comparison between the total current value of the busbar collected by the current sensor and the sum of the instantaneous values of each branch current. When the deviation exceeds 5%, a calibration request signal is sent to the central processing unit, and the central processing unit generates an alarm signal according to the phase data to locate the deviation source.

[0009] An emergency AC main distribution cabinet provided by the present invention, both the input connector and the output connector include a connector plug and / or a connector socket.

[0010] An emergency AC main distribution cabinet provided by the present invention, the emergency AC main distribution cabinet further includes: A surge protector, one end of which is electrically connected to the phase line, and the other end is electrically connected to the grounding line.

[0011] An emergency AC main distribution cabinet provided by the present invention, at least one side of the cabinet body is connected to a display screen and / or an indicator light, and the display screen and / or the indicator light are electrically connected to the monitoring module.

[0012] An emergency AC main distribution cabinet provided by the present invention, the emergency AC main distribution cabinet further includes: a plurality of casters, and a plurality of the casters are connected to the bottom of the cabinet body.

[0013] An emergency AC main distribution cabinet provided according to the present invention, the cabinet body includes: a left side plate, a right side plate, a top plate, a mounting bracket, a front door plate, and a rear door plate; The left side plate, the right side plate, the top plate, the mounting bracket, the front door plate, and the rear door plate are spliced together to form the accommodation cavity; The bottom of the left side plate is connected to the left side of the mounting bracket, the bottom of the right side plate is connected to the right side of the mounting bracket, the top plate is connected to the tops of the left side plate and the right side plate, the front door plate and the rear door plate are rotatably connected between the mounting bracket and the top plate, the front door plate is located on the front side of the mounting bracket, and the rear door plate is located on the rear side of the mounting bracket.

[0014] An emergency AC main distribution cabinet provided according to the present invention, an opening is provided on the top, and a brush for blocking the opening is provided at the top of the accommodation cavity.

[0015] The emergency AC main distribution cabinet provided by the present invention can achieve fine control of power supply by integrating a main circuit breaker and multiple output components. When a failure occurs in the mains power supply, if an external power supply is coordinated, this main distribution cabinet can quickly switch to the external power supply to ensure continuous power supply to critical loads, thereby improving the power supply reliability of the entire system. The setting of the main circuit breaker and branch circuit breakers can quickly cut off the circuit in case of faults such as overload and short circuit, effectively preventing the expansion of faults and protecting the safety of downstream equipment and personnel. At the same time, the monitoring module can monitor the total current and each branch current in real time. Once an abnormality is detected, an alarm can be immediately issued, facilitating maintenance personnel to take measures in a timely manner, further enhancing safety. At the same time, through real-time dynamic verification and phase coordination analysis, the problem of monitoring distortion of traditional main distribution cabinets is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the emergency AC main distribution cabinet provided by the embodiment of the present invention.

[0018] Figure 2 It is a circuit diagram of the emergency AC main distribution cabinet provided by the embodiment of the present invention.

[0019] Figure 3 It is one of the schematic diagrams of the emergency AC main distribution cabinet provided by the embodiment of the present invention.

[0020] Figure 4 It is the second schematic diagram of the emergency AC main switch cabinet provided by the embodiment of the present invention.

[0021] Figure 5 It is the third schematic diagram of the emergency AC main switch cabinet provided by the embodiment of the present invention.

[0022] Figure 6 It is the fourth schematic diagram of the emergency AC main switch cabinet provided by the embodiment of the present invention.

[0023] Figure 7 It is the fifth schematic diagram of the emergency AC main switch cabinet provided by the embodiment of the present invention.

[0024] Figure 8 It is the sixth schematic diagram of the emergency AC main switch cabinet provided by the embodiment of the present invention.

[0025] Figure 9 It is the seventh schematic diagram of the emergency AC main switch cabinet provided by the embodiment of the present invention.

[0026] Figure 10 It is the top view of the emergency AC main switch cabinet provided by the embodiment of the present invention.

[0027] Reference numerals: 1, cabinet body; 11, left side plate; 12, right side plate; 13, top plate; 131, opening; 14, mounting bracket; 15, front door panel; 16, rear door panel; 17, panel; 2, input component; 21, input connector; 22, grounding line; 23, phase line; 3, main circuit breaker; 4, output component; 41, branch circuit breaker; 42, output connector; 5, monitoring module; 51, main monitoring module; 52, branch monitoring module; 6, sampling module; 7, surge protector; 8, display screen; 9, indicator light; 10, caster. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] The following combines Figures 1-10 to describe the emergency AC main switch cabinet provided by the present invention.

[0030] An embodiment of the present invention provides an emergency AC main switch cabinet, as Figures 1 to 10 shown. The emergency AC main switch cabinet includes: a cabinet body 1, an input component 2, a main circuit breaker 3, a plurality of output components 4, and a monitoring module 5. The cabinet body 1 forms a receiving cavity; the input component 2 is arranged in the receiving cavity, and the first end is used for electrically connecting with an external power supply and the ground; the first end of the main circuit breaker 3 is electrically connected to the second end of the input component 2; each output component 4 includes a branch circuit breaker 41 and an output connector 42, and each branch circuit breaker 41 is electrically connected to the second end of the main circuit breaker 3 through a parallel busbar, and the output connector 42 is electrically connected to the busbar through its corresponding branch circuit breaker 41 for electrically connecting with an external load through the output connector 42; the monitoring module 5 includes a main monitoring module 51 and a plurality of branch monitoring modules 52; each branch monitoring module 52 is electrically connected to its corresponding branch circuit breaker 41, and the main monitoring module 51 is electrically connected to each branch monitoring module 52; the main monitoring module 51 is configured to receive the instantaneous branch current value and phase data uploaded in real time by each branch monitoring module 52, perform dynamic difference verification on the algebraic sum of the instantaneous branch current values and the total current value of the busbar, and trigger a branch current calibration instruction when the verification deviation in a continuous plurality of sampling periods exceeds a set threshold; synchronously verify the phase data of the main monitoring module 51 and each branch monitoring module 52, and when the phase difference detected by any branch monitoring module 52 is greater than a preset value, mark the abnormal branch corresponding to each branch monitoring module 52 based on the phase difference gradient distribution.

[0031] In this embodiment, the input component 2 ensures that the main switch cabinet can obtain electrical energy from an external power supply (generator power supply), and at the same time provides ground protection, enhancing the safety of use. The main circuit breaker 3 serves as the total power switch of the entire main switch cabinet. The function of the main circuit breaker 3 is to quickly cut off the power supply in case of abnormal situations such as overload or short circuit, prevent the expansion of the fault, and protect the entire circuit system. Each output component 4 includes a branch circuit breaker 41 and an output connector 42. Each branch circuit breaker 41 is electrically connected to the second end of the main circuit breaker 3 through a parallel busbar to realize power distribution. The output connector 42 is electrically connected to the busbar through its corresponding branch circuit breaker 41 for electrically connecting with an external load through the output connector 42. The monitoring module 5 includes a main monitoring module 51 and a plurality of branch monitoring modules 52. Each branch monitoring module 52 is electrically connected to its corresponding branch circuit breaker 41 for real-time monitoring of the current situation of the branch circuit. The main monitoring module 51 is electrically connected to each branch monitoring module 52 for summarizing and processing the data of the branch monitoring modules 52.

[0032] In the initial state, the emergency AC distribution cabinet is in the standby state, and all electrical components in the cabinet 1 (including the input component 2, the main circuit breaker 3, the output component 4, the monitoring module 5, etc.) are in the unpowered state. The first end of the input component 2 is electrically connected to the external power supply and the ground, ready to receive the external power supply input at any time.

[0033] When a failure occurs in the mains power supply, the distribution cabinet can detect this abnormal situation and switch to the external power supply (such as a generator, a UPS power supply, etc.). The current enters the cabinet 1 through the first end of the input component 2. The input component 2 transmits the electric energy to the main circuit breaker 3. The main circuit breaker 3 closes, and the current enters the parallel busbar through the main circuit breaker 3. The busbar distributes the current to each branch circuit breaker 41. Each branch circuit breaker 41 controls an output current and is electrically connected to the external load through the output connector 42.

[0034] Each branch monitoring module 52 real-time monitors the instantaneous current value and phase data of its corresponding branch circuit breaker 41. The branch monitoring module 52 uploads the monitored data to the main monitoring module 51 in real time. The main monitoring module 51 receives the data uploaded by each branch monitoring module 52 and performs dynamic difference verification. The main monitoring module 51 compares the algebraic sum of the instantaneous current values of each branch with the total current value of the busbar.

[0035] Each branch monitoring module 52 real-time collects the instantaneous current value (including amplitude and waveform characteristics) and phase angle data of its corresponding branch, and uploads them to the main monitoring module 51 through the CAN bus or the RS-485 communication protocol; The main monitoring module 51 synchronously receives all branch data at a fixed sampling period (such as 10 ms), and at the same time directly collects the total current value of the busbar through an independently set Hall sensor, forming a basis for double data source comparison.

[0036] The main monitoring module 51 performs vector superposition calculation on the instantaneous current values of all branches at the same time stamp (considering the phase difference in the three-phase balanced system), and calculates the difference between the modulus of the algebraic sum and the measured value of the total current sensor; the calibration deviation threshold is dynamically adjusted according to 1% - 5% of the system rated current, and a sliding window model is established in combination with historical data (such as taking the standard deviation of the last 100 sampling periods as a reference); when the difference continuously exceeds the threshold for a preset number of periods (such as 3 consecutive periods), it is determined that there is an inaccuracy in branch monitoring, a calibration instruction is started, an audible and visual alarm is triggered, and an abnormal log is recorded.

[0037] Calculate the absolute value of the phase difference between each branch and the total current. For example, when the phase difference of a single branch > 5° (adjustable preset parameter), it is marked as initially abnormal; perform cluster analysis on the abnormal phase difference data. If it is detected that the phase differences show a gradient distribution characteristic (such as the phase differences between adjacent branches increasing by 1°, 3°, 5°), locate the position of poor contact or insulation deterioration. Trigger the automatic calibration program to verify the turns ratio and phase response characteristics of each branch by injecting a standard test signal; divide the alarm levels according to the deviation amplitude and duration (such as early warning, severe alarm, emergency tripping); finally, a diagnostic report containing the timestamp, deviation value, and phase characteristics can be generated using the marked information of the abnormal branches.

[0038] When the mains power supply is normally supplying power, the current enters the cabinet 1 through the first end of the input component 2. The input component 2 transmits the mains electrical energy to the main circuit breaker 3. At this time, if the main circuit breaker 3 was in the open state before, it may close according to the control logic or manual operation, allowing the current to pass through. After the main circuit breaker 3 closes, the current enters the parallel busbars through the main circuit breaker 3. The busbars distribute the current to each branch circuit breaker 41, and each branch circuit breaker 41 controls an output current. The output connector 42 is electrically connected to the busbars through its corresponding branch circuit breaker 41 and is used to transmit electrical energy to the external load. The external load receives electrical energy through the output connector 42 and starts to work normally. Each branch monitoring module 52 monitors the instantaneous current value and phase data of its corresponding branch circuit breaker 41 in real time. The branch monitoring module 52 uploads the monitored data to the total monitoring module 51 in real time. The total monitoring module 51 receives the data uploaded by each branch monitoring module 52 and performs dynamic difference verification. It compares the algebraic sum of the instantaneous current values of each branch with the total current value of the busbars to verify the accuracy of current distribution and the stability of the system. Normal operating state: If the verification deviation is within the set threshold range, it indicates that the current distribution is normal, and the system continues to operate normally. The total monitoring module 51 continuously monitors the current data to ensure the stable operation of the system.

[0039] When the total monitoring module 51 marks an abnormal branch, the following measures can be taken: issue an alarm to notify the maintenance personnel for inspection and repair. Automatically cut off the power supply of the abnormal branch according to the preset logic to prevent the failure from expanding. Record the abnormal event to provide a basis for subsequent analysis and troubleshooting.

[0040] The emergency communication main switch cabinet provided by the present invention can achieve fine control of power supply by integrating the main circuit breaker 3 and multiple output components 4. When a failure occurs in the mains power supply, if an external power supply is used in cooperation, the main switch cabinet can quickly switch to the external power supply to ensure continuous power supply to critical loads, thereby improving the power supply reliability of the entire system. The setting of the main circuit breaker 3 and the branch circuit breaker 41 can quickly cut off the circuit in case of faults such as overload and short circuit, effectively preventing the expansion of the fault and protecting the safety of downstream equipment and personnel. At the same time, the monitoring module 5 can monitor the total current and the current of each branch in real time. Once an abnormality is detected, an alarm can be immediately issued, facilitating the maintenance personnel to take measures in time, further enhancing the safety. At the same time, through real-time dynamic verification and phase coordination analysis, the problem of monitoring distortion of traditional main switch cabinets is effectively solved.

[0041] In some embodiments, as Figures 1 to 9 shown, the input component 2 includes: an input connector 21, a grounding line 22, and a phase line 23; the input connector 21 is electrically connected to the output connector 42 through the phase line 23, the main circuit breaker 3, and one of the branch circuit breakers 41 in sequence; one end of the grounding line 22 is connected to the ground, and the other end is electrically connected to each output connector 42; the monitoring module 5 is electrically connected to the main circuit breaker 3 and the branch circuit breaker 41.

[0042] In this embodiment, the input connector 21 is the interface for the main switch cabinet to connect to the external power supply and is used to receive the electric energy provided by the external power supply. One end of the grounding line 22 is connected to the ground to ensure the electrical safety of the main switch cabinet. The other end is electrically connected to each output connector 42 to provide grounding protection for the load equipment. Grounding is an important measure for electrical safety, which can prevent electric shock accidents caused by reasons such as equipment insulation damage or accidental contact by personnel. The phase line 23 is the main channel for electric energy transmission. It connects the input connector 21 and the main circuit breaker 3 and transmits the electric energy provided by the external power supply to each component inside the main switch cabinet.

[0043] After the electric energy enters the main switch cabinet from the input connector 21, it is first transmitted to the main circuit breaker 3 through the phase line 23. The main circuit breaker 3 serves as the total power switch of the entire main switch cabinet to control the on and off of the electric energy. When the main circuit breaker 3 is closed, the electric energy continues to be transmitted to each branch circuit breaker 41 through the phase line 23. Each branch circuit breaker 41 controls the on and off of an output component 4, that is, controls the power supply to the corresponding load. When the branch circuit breaker 41 is closed, the electric energy is transmitted to the load equipment through the output connector 42.

[0044] The monitoring module 5 is electrically connected to the main circuit breaker 3 and each branch circuit breaker 41, and is used to monitor the total current and each branch current in real time. The monitoring module 5 can detect abnormal changes in the current, such as overload, short circuit, etc., and immediately send out an alarm signal to remind the operation and maintenance personnel to take measures in time. The existence of the grounding line 22 provides additional safety protection for the load equipment. When the equipment leaks electricity or a person accidentally touches it, the grounding line 22 can quickly conduct the leaked current into the ground to prevent electric shock accidents.

[0045] In some embodiments, such as Figure 2 and Figure 3 shown, the emergency AC distribution board further includes: a sampling module 6, the sampling module 6 is electrically connected to each branch circuit breaker 41 and communicatively connected to the monitoring module 5 (through the RS485 communication protocol).

[0046] Specifically, the main function of the sampling module 6 is to collect the on and off signals of each branch circuit breaker 41. These signals reflect the power supply status of each branch (i.e., each load). The sampling module 6 is electrically connected to each branch circuit breaker 41 and can obtain the status information of each branch circuit breaker 41 in real time. The sampling module 6 communicates with the monitoring module 5 through the RS485 communication protocol. RS485 is a commonly used serial communication protocol, which has the advantages of long transmission distance and strong anti-interference ability, and is suitable for complex environments such as industrial sites.

[0047] When the status of each branch circuit breaker 41 changes (such as closing or opening), the sampling module 6 can immediately capture these changes and generate corresponding on and off signals. The sampling module 6 transmits these signals to the monitoring module 5 through the RS485 communication protocol. Since the RS485 protocol supports multi-point communication, the sampling module 6 can communicate with multiple monitoring modules 5 at the same time. After receiving the signals from the sampling module 6, the monitoring module 5 will perform further processing and analysis. For example, the monitoring module 5 can judge the power supply status of each branch according to these signals, and whether there are abnormalities or faults. If the monitoring module 5 detects an abnormality or a fault, it will immediately send out an alarm signal to remind the operation and maintenance personnel to take measures in time. At the same time, the monitoring module 5 can also record the fault information for the operation and maintenance personnel to analyze and process later.

[0048] In some embodiments, the total monitoring module 51 includes a central processor and a difference verification unit, and the branch monitoring module 52 includes a current sensor and a high-speed sampling circuit; the current sensor is installed at the input terminal of the corresponding branch circuit breaker 41 for capturing current waveform data at a sampling frequency not lower than 10 kHz; the difference verification unit is configured to perform real-time comparison between the total current value of the busbar collected by the current sensor and the sum of the instantaneous values of each branch current. When the deviation exceeds 5%, a calibration request signal is sent to the central processor, and the central processor generates an alarm signal based on the phase data to locate the source of the deviation.

[0049] Specifically, the central processor is responsible for processing and analyzing the data from the branch monitoring module 52, executing the calibration logic, and generating an alarm signal. The difference verification unit is responsible for performing real-time comparison between the total current value of the busbar and the sum of the instantaneous values of each branch current to detect whether there is a deviation. The current sensor is installed at the input terminal of the corresponding branch circuit breaker 41 for capturing current waveform data. The high-speed sampling circuit cooperates with the current sensor to sample the current at a sampling frequency not lower than 10 kHz to ensure that the captured current data has sufficient resolution and accuracy.

[0050] During operation, the current sensor samples the branch current at a high frequency (not lower than 10 kHz) to capture current waveform data. These data are transmitted to the branch monitoring module 52 through the high-speed sampling circuit and further uploaded to the total monitoring module 51.

[0051] The total current value of the busbar can also be approximately obtained through a dedicated current sensor or by calculating the sum of each branch current (in actual implementation, a separate sensor is required to directly measure the total current of the busbar to ensure accuracy). This total current value is used for comparison with the sum of the instantaneous values of the branch currents.

[0052] The difference verification unit performs real-time comparison between the total current value of the busbar and the sum of the instantaneous values of each branch current. If the deviation exceeds the set threshold (such as 5%), the difference verification unit sends a calibration request signal to the central processor.

[0053] After receiving the calibration request signal, the central processor locates the source of the deviation based on the phase data. The central processor generates an alarm signal to notify the maintenance personnel for inspection and repair. In some embodiments, the central processor may also automatically cut off the power supply of the abnormal branch according to the preset logic to prevent the expansion of the fault.

[0054] Such as Figure 2 and Figure 3As shown in the figure, the emergency AC main switch cabinet further includes: a surge protector 7 (lightning protection module). One end of the surge protector 7 is electrically connected to the phase line 23, and the other end is electrically connected to the grounding line 22. The main function of the surge protector 7 is to absorb and discharge the transient overvoltage energy generated by lightning, power grid fluctuations, etc., so as to protect the main switch cabinet and the load equipment connected thereto from damage. One end of the surge protector 7 is electrically connected to the phase line 23, and the other end is electrically connected to the grounding line 22. This connection method ensures that the surge protector 7 can effectively conduct the overvoltage energy into the ground, thereby protecting the safety of the circuit and equipment.

[0055] When an overvoltage appears on the phase line 23, the surge protector 7 will respond quickly and discharge the overvoltage energy to the ground through components such as non-linear resistors or gas discharge tubes inside it. This process is fast and usually completed within microseconds, thus effectively protecting the circuit and equipment from damage.

[0056] The addition of the surge protector 7 significantly improves the safety of the emergency AC main switch cabinet and the load equipment connected thereto, and reduces the risk of equipment damage caused by transient overvoltages such as lightning. By protecting the circuit and equipment from transient overvoltage damage, the surge protector 7 helps to maintain the stable operation of the system and reduce problems such as power outages or data loss caused by equipment failures.

[0057] In some embodiments, as Figure 5 shown, at least one side of the cabinet body 1 is connected to the display screen 8 and / or the indicator light 9, and the display screen 8 and / or the indicator light 9 are electrically connected to the monitoring module 5.

[0058] Specifically, the display screen 8 is usually used to display the real-time status information of the emergency AC main switch cabinet, such as the power parameters (voltage, current, power, etc.) of each branch, fault alarm information, system operation status, etc. Through the display screen 8, the operation and maintenance personnel can intuitively understand the overall situation of the system, which is convenient for remote monitoring and management.

[0059] The indicator light 9 (also known as the indicator light 9 or the alarm light) is usually used to indicate the specific status of the system or issue an alarm. For example, when a fault or abnormality occurs in the system, the indicator light 9 will light up or flash to remind the operation and maintenance personnel to pay attention and take corresponding measures. The color and flashing mode of the indicator light 9 are usually used to represent different fault types or severity levels.

[0060] In some embodiments, as Figure 1 shown, the emergency AC main switch cabinet further includes: a plurality of casters 10, and a plurality of casters 10 are connected to the bottom of the cabinet body 1.

[0061] In this embodiment, the number and position of the casters 10 at the bottom of the cabinet body 1 are usually determined according to the size, weight of the cabinet body 1, and the expected usage scenario. Generally speaking, the casters 10 are evenly distributed around the bottom of the cabinet body 1 to ensure the stability and balance of the cabinet body 1 during movement. There are various types of casters 10, including fixed-direction wheels, swivel wheels, and brake wheels. Fixed-direction wheels can only move in a fixed direction and are suitable for scenarios where the movement direction needs to be controlled; swivel wheels can rotate 360 degrees, providing higher flexibility; brake wheels can be locked when needed to prevent the cabinet body 1 from moving accidentally. The emergency AC power distribution cabinet usually selects the appropriate type of caster 10 according to actual needs. The load-bearing capacity of the casters 10 is also an important factor to consider during design. Ensure that the load-bearing capacity of the casters 10 can meet the total weight of the cabinet body 1 and its internal equipment to avoid damage or safety hazards during movement.

[0062] In some embodiments, as Figures 1 to 10 shown, the cabinet body 1 includes: a left side plate 11, a right side plate 12, a top plate 13, a mounting bracket 14, a front door panel 15, and a rear door panel 16; the left side plate 11, the right side plate 12, the top plate 13, the mounting bracket 14, the front door panel 15, and the rear door panel 16 are spliced together to form a receiving cavity; the bottom of the left side plate 11 is connected to the left side of the mounting bracket 14, the bottom of the right side plate 12 is connected to the right side of the mounting bracket 14, the top plate 13 is connected to the tops of the left side plate 11 and the right side plate 12, and the front door panel 15 and the rear door panel 16 are rotatably connected between the mounting bracket 14 and the top plate 13. The front door panel 15 is located on the front side of the mounting bracket 14, and the rear door panel 16 is located on the rear side of the mounting bracket 14.

[0063] Specifically, the cabinet body 1 is made of cold-rolled steel plate with a thickness of 2.0 millimeters. This material has high strength, good toughness, and corrosion resistance, which can ensure the stability and durability of the cabinet body 1 during long-term use.

[0064] The cabinet body 1 is composed of main structural components such as a left side plate 11, a right side plate 12, a top plate 13, a mounting bracket 14, a front door panel 15, and a rear door panel 16. These components are spliced together through precise processing techniques and connection methods to form a complete structure of the cabinet body 1.

[0065] The left side plate 11, the right side plate 12, the top plate 13, and the mounting bracket 14 are fixed to each other by welding, bolt connection, or other reliable connection methods to ensure the overall rigidity and stability of the cabinet body 1. The front door panel 15 and the rear door panel 16 are installed between the mounting bracket 14 and the top plate 13 through rotatable connectors such as hinges, facilitating opening and closing.

[0066] It should be noted that, for the convenience of installing various components, a panel 17 is also provided for placing the input component 2, the output component 4, the main circuit breaker 3, the monitoring module 5, etc.

[0067] In some embodiments, such as Figure 10 shown, there is an opening 131 on the top, and a brush for blocking the opening 131 is provided at the top of the accommodation cavity. The opening 131 provided at the top of the cabinet body 1 is mainly for providing a ventilation and heat dissipation channel to ensure that the electrical components inside the cabinet body 1 can dissipate heat effectively during operation, preventing equipment failure or damage caused by overheating. The brush for blocking the opening 131 is usually made of soft and durable materials such as nylon or polypropylene fibers. These brushes have dense bristles and can effectively block dust, debris, small animals, etc. from entering the inside of the accommodation cavity, thereby protecting the electrical components inside the cabinet body 1 from damage.

[0068] The setting of the opening 131 enables the heat inside the cabinet body 1 to be discharged through natural convection or forced ventilation, thereby ensuring that the electrical components operate within an appropriate temperature range and extending the service life of the equipment. As a blocking object for the opening 131, the brush can effectively block dust, debris, small animals (such as mice, insects, etc.) from the outside from entering the inside of the cabinet body 1, preventing these sundries from causing short circuits, damage or interference to the electrical components.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An emergency AC cabinet, characterized in that: include: The cabinet body is formed with a receiving cavity; An input component is disposed in the accommodating cavity, and a first end is used for being electrically connected to an external power source and the ground; a main circuit breaker, a first end of which is electrically connected to the second end of the input assembly; A plurality of output components, each of which comprises a branch circuit breaker and an output connector, each of which is electrically connected to the second end of the main circuit breaker through a parallel busbar, and the output connector is electrically connected to the busbar through the corresponding branch circuit breaker, so as to be electrically connected to an external load through the output connector; The monitoring module comprises a main monitoring module and a plurality of branch monitoring modules; each branch monitoring module is electrically connected to its corresponding branch circuit breaker, and the main monitoring module is electrically connected to each branch monitoring module; Among them, the general monitoring module is configured to receive the instantaneous value and phase data of the branch current uploaded in real time by each branch monitoring module, and perform dynamic difference verification on the algebraic sum of the instantaneous values ​​of each branch current and the total current value of the busbar. When the verification deviation within multiple consecutive sampling cycles exceeds the set threshold, the branch current calibration instruction is triggered; the phase data of the general monitoring module and each branch monitoring module are synchronously verified. When the phase difference detected by any branch monitoring module is greater than a preset value, the abnormal branch corresponding to each branch monitoring module is marked based on the phase difference gradient distribution.

2. The emergency AC cabinet according to claim 1 is characterized in that: The input assembly includes: an input connector, a grounding circuit and a phase line; The input connector is electrically connected to the output connector through the phase line, the main circuit breaker, and one of the branch circuit breakers in sequence; One end of the grounding circuit is connected to the ground, and the other end is electrically connected to each of the output connectors; The monitoring module is electrically connected to the main circuit breaker and the branch circuit breakers.

3. The emergency AC cabinet according to claim 2 is characterized in that: The emergency AC cabinet also includes: The sampling module is electrically connected to each of the branch circuit breakers and is communicatively connected to the monitoring module to collect power-on and power-off signals of a corresponding number of the branch circuit breakers and transmit the signals to the monitoring module.

4. The emergency AC cabinet according to claim 2 is characterized in that: The input connector and the output connector both include a connector plug and / or a connector socket.

5. The emergency AC cabinet according to claim 2 is characterized in that: The emergency AC cabinet also includes: A surge protector has one end electrically connected to the phase line and the other end electrically connected to the ground line.

6. The emergency AC cabinet according to claim 1, characterized in that: The overall monitoring module includes a central processing unit and a difference verification unit, and the branch monitoring module includes a current sensor and a high-speed sampling circuit; The current sensor is embedded at the input terminal corresponding to the branch circuit breaker and is used to capture current waveform data at a sampling frequency of not less than 10kHz; The difference verification unit is configured to perform real-time comparison based on the total current value of the busbar collected by the current sensor and the cumulative sum of the instantaneous values ​​of each branch current. When the deviation exceeds 5%, a calibration request signal is sent to the central processor, and the central processor locates the source of the deviation according to the phase data and generates an alarm signal.

7. The emergency AC power supply cabinet according to any one of claims 1 to 6, characterized in that: At least one side of the cabinet is connected to a display screen and / or an indicator light, and the display screen and / or the indicator light is electrically connected to the monitoring module.

8. The emergency AC power supply cabinet according to any one of claims 1 to 6, characterized in that: The emergency AC display cabinet further comprises: a plurality of casters, and the bottom of the cabinet body is connected with the plurality of casters.

9. The emergency AC power supply cabinet according to any one of claims 1 to 6, characterized in that: The cabinet comprises: a left side panel, a right side panel, a top panel, a mounting bracket, a front door panel and a rear door panel; The left side plate, the right side plate, the top plate, the mounting bracket, the front door plate and the rear door plate are spliced ​​together to form the accommodating cavity; The bottom of the left side panel is connected to the left side of the mounting bracket, the bottom of the right side panel is connected to the right side of the mounting bracket, the top panel is connected to the top of the left side panel and the right side panel, the front door panel and the rear door panel are both rotatably connected between the mounting bracket and the top panel, the front door panel is located on the front side of the mounting bracket, and the rear door panel is located on the rear side of the mounting bracket.

10. The emergency AC cabinet according to claim 9, characterized in that: An opening is arranged on the top, and a brush for blocking the opening is arranged on the top of the accommodating cavity.

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