An emergency AC cabinet

Abstract

The present invention relates to the technical field of electric power devices, and provides an emergency AC main cabinet, comprising: a cabinet body, formed with a accommodating cavity; an input component, arranged in the accommodating cavity, with a first end for electrically connecting to an external power source and the ground; a main circuit breaker, with a 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; a monitoring module, including a main monitoring module and a plurality of branch monitoring modules. The emergency AC main cabinet provided by the present invention can achieve fine control of power supply by integrating a main circuit breaker and a plurality of output components. In the event of a main power failure, if combined with an external power supply, the main 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. At the same time, through real-time dynamic verification and phase collaborative analysis, the problem of monitoring distortion of traditional main cabinets can be effectively solved.

Description

Technical Field

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

[0002] In critical facilities such as data centers, large computer rooms, and factories, ensuring continuous power supply to critical loads is crucial for maintaining business continuity and productivity. To achieve this, these locations are often equipped with backup power systems to mitigate potential utility power failures. These backup power systems can rapidly switch to the mains power supply in the event of a utility power outage, providing uninterrupted power to critical loads.

[0003] However, the placement of traditional network cabinets and their dependence on AC power supply will cause the cabinets to malfunction when the AC power is cut off, thereby affecting the operation of equipment such as the network cabinets at the lower end. Summary of the Invention

[0004] The present invention provides an emergency AC power supply cabinet, which is used to solve the problem that the existing power cabinet cannot cooperate to provide power after the mains power is cut off.

[0005] The present invention provides an emergency AC power supply cabinet, comprising:

[0006] The cabinet body is formed with a receiving cavity;

[0007] An input component is disposed in the accommodating cavity, and a first end is used for electrically connecting to an external power source and the ground;

[0008] a main circuit breaker, a first end of which is electrically connected to the second end of the input assembly;

[0009] a plurality of output assemblies, each comprising a branch circuit breaker and an output connector, each branch circuit breaker being electrically connected to the second end of the main circuit breaker via a parallel busbar, and the output connector being electrically connected to the busbar via the corresponding branch circuit breaker, so as to be electrically connected to an external load via the output connector;

[0010] The monitoring module includes a main monitoring module and multiple 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;

[0011] 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 value of each branch current and the total current value of the busbar. When the verification deviation in 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 the preset value, the abnormal branch corresponding to each branch monitoring module is marked based on the phase difference gradient distribution.

[0012] According to an emergency AC train head cabinet provided by the present invention, the input component includes: an input connector, a grounding line and a phase line;

[0013] 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;

[0014] One end of the grounding circuit is connected to the ground, and the other end is electrically connected to each of the output connectors;

[0015] The monitoring module is electrically connected to the main circuit breaker and the branch circuit breakers.

[0016] According to an emergency AC power supply cabinet provided by the present invention, the emergency AC power supply cabinet further includes:

[0017] The sampling module is electrically connected to each of the branch circuit breakers and is in communication connection with the monitoring module, collects power-on and power-off signals of a corresponding number of the branch circuit breakers, and transmits the collected power-on and power-off signals to the monitoring module.

[0018] According to an emergency AC train head cabinet provided by the present invention, the overall monitoring module includes a central processing unit and a difference check unit, and the branch monitoring module includes a current sensor and a high-speed sampling circuit;

[0019] 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 10 kHz;

[0020] 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 processing unit, and the central processing unit locates the source of the deviation based on the phase data and generates an alarm signal.

[0021] According to the emergency AC power supply cabinet provided by the present invention, the input connector and the output connector both include a connector plug and / or a connector socket.

[0022] According to an emergency AC power supply cabinet provided by the present invention, the emergency AC power supply cabinet further includes:

[0023] A surge protector has one end electrically connected to the phase line and the other end electrically connected to the ground line.

[0024] According to an emergency AC power supply 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.

[0025] According to an emergency AC power supply cabinet provided by the present invention, the emergency AC power supply cabinet further comprises: a plurality of casters, and the bottom of the cabinet body is connected to the plurality of casters.

[0026] According to the present invention, an emergency AC power supply cabinet is provided, wherein the cabinet body comprises: a left side panel, a right side panel, a top panel, a mounting bracket, a front door panel and a rear door panel;

[0027] The left side panel, the right side panel, the top panel, the mounting bracket, the front door panel and the rear door panel are spliced ​​together to form the accommodating cavity;

[0028] 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.

[0029] According to the emergency AC display cabinet provided by the present invention, an opening is provided on the top, and a brush for sealing the opening is provided on the top of the accommodating cavity.

[0030] The emergency AC power distribution cabinet provided by the present invention can achieve fine control of the power supply by integrating a main circuit breaker and multiple output components. In the event of a main power failure, if combined with an external power supply, the power 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 the event of overload, short circuit and other faults, effectively preventing the expansion of the fault 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 found, an alarm can be issued immediately, which facilitates the operation and maintenance personnel to take timely measures, further enhancing safety. At the same time, through real-time dynamic verification and phase collaborative analysis, the problem of distortion in traditional power distribution cabinet monitoring is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the emergency AC terminal cabinet provided by an embodiment of the present invention.

[0033] Figure 2 This is a circuit diagram of an emergency AC train head cabinet provided by an embodiment of the present invention.

[0034] Figure 3 This is one of the schematic diagrams of the emergency AC power supply cabinet provided by an embodiment of the present invention.

[0035] Figure 4 This is the second schematic diagram of the emergency AC power supply cabinet provided by an embodiment of the present invention.

[0036] Figure 5 This is the third schematic diagram of the emergency AC power supply cabinet provided by the embodiment of the present invention.

[0037] Figure 6 This is the fourth schematic diagram of the emergency AC power supply cabinet provided by an embodiment of the present invention.

[0038] Figure 7 This is the fifth schematic diagram of the emergency AC power supply cabinet provided by the embodiment of the present invention.

[0039] Figure 8 This is the sixth schematic diagram of the emergency AC power supply cabinet provided by the embodiment of the present invention.

[0040] Figure 9 This is the seventh schematic diagram of the emergency AC power supply cabinet provided by the embodiment of the present invention.

[0041] Figure 10 It is a top view of the emergency AC terminal cabinet provided by an embodiment of the present invention.

[0042] Reference numerals:

[0043] 1. Cabinet; 11. Left side panel; 12. Right side panel; 13. Top panel; 131. Opening; 14. Mounting bracket; 15. Front door panel; 16. Rear door panel; 17. Panel;

[0044] 2. Input assembly; 21. Input connector; 22. Ground line; 23. Phase line;

[0045] 3. Main circuit breaker;

[0046] 4. Output assembly; 41. Branch circuit breaker; 42. Output connector;

[0047] 5. Monitoring module; 51. Main monitoring module; 52. Branch monitoring module;

[0048] 6. Sampling module;

[0049] 7. Surge protector;

[0050] 8. Display screen;

[0051] 9. Indicator light;

[0052] 10. Casters. DETAILED DESCRIPTION

[0053] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0054] The following combination Figures 1-10 The present invention describes the emergency AC train cabinet provided by the present invention.

[0055] The embodiment of the present invention provides an emergency AC cabinet, such as Figures 1 to 10As shown, the emergency AC power supply 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 is formed with a receiving cavity; the input component 2 is arranged in the receiving cavity, and the first end is used to be electrically connected to the 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, 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, so as to be electrically connected to the 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 The device 41 is electrically connected, 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 value and phase data of the branch current uploaded in real time by each branch monitoring module 52, and perform dynamic difference verification on the algebraic sum of the instantaneous value of each branch current and the total current value of the busbar. When the verification deviation within multiple consecutive sampling periods exceeds the set threshold, the branch current calibration instruction is triggered; the phase data of the main monitoring module 51 and each branch monitoring module 52 are synchronously verified. When the phase difference detected by any branch monitoring module 52 is greater than the preset value, the abnormal branch corresponding to each branch monitoring module 52 is marked based on the phase difference gradient distribution.

[0056] In this embodiment, the input component 2 ensures that the power supply cabinet can draw power from an external power source (diesel generator power supply) while also providing grounding protection, enhancing safety. The main circuit breaker 3 serves as the master power switch for the entire power supply cabinet. In the event of an abnormality such as an overload or short circuit, the main circuit breaker 3 quickly cuts off power, preventing the fault from escalating and protecting 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 via a parallel busbar to distribute power. The output connector 42 is electrically connected to the busbar via its corresponding branch circuit breaker 41 and is used to electrically connect to an external load via the output connector 42. The monitoring module 5 includes a main monitoring module 51 and multiple 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 branch current. The main monitoring module 51 is electrically connected to each branch monitoring module 52 to aggregate and process data from the branch monitoring modules 52.

[0057] Initially, the emergency AC power supply cabinet is in standby mode, and all electrical components within cabinet 1 (including input component 2, main circuit breaker 3, output component 4, and monitoring module 5) are de-energized. The first terminal of input component 2 is electrically connected to an external power source and ground, ready to receive external power input at any time.

[0058] When the mains power fails, the cabinet detects this abnormality and switches to an external power source (such as a generator, UPS power supply, etc.). Current enters the cabinet 1 through the first end of the input component 2. The input component 2 transmits the electrical 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 one output current and is electrically connected to the external load through the output connector 42.

[0059] Each branch monitoring module 52 monitors the instantaneous current and phase data of its corresponding branch circuit breaker 41 in real time. The branch monitoring modules 52 upload the monitored data to the master monitoring module 51 in real time. The master monitoring module 51 receives the data uploaded by each branch monitoring module 52 and performs a dynamic difference check. The master monitoring module 51 compares the algebraic sum of the instantaneous current values ​​of each branch with the total current value of the busbar.

[0060] Each branch monitoring module 52 collects the instantaneous value (including amplitude, waveform characteristics) and phase angle data of the corresponding branch in real time, and uploads it to the main monitoring module 51 via the CAN bus or RS-485 communication protocol;

[0061] The overall monitoring module 51 synchronously receives all branch data at a fixed sampling period (eg, 10ms), and simultaneously directly collects the total current value of the busbar through an independently set Hall sensor, forming a dual data source comparison basis.

[0062] The overall monitoring module 51 performs vector superposition calculations on the instantaneous values ​​of all branch currents at the same timestamp (the phase difference in the three-phase balanced system needs to be taken into account), and calculates the difference between the modulus of the algebraic sum and the actual measured value of the total current sensor; the calibration deviation threshold is dynamically adjusted based on 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 most recent 100 sampling cycles as a reference); when the difference continuously exceeds the threshold for a preset number of cycles (such as 3 consecutive cycles), it is determined that there is a branch monitoring misalignment, the calibration instruction is initiated, the sound and light alarm is triggered, and the abnormality log is recorded.

[0063] The system calculates the absolute phase difference between each branch and the total current. For example, a single-branch phase difference greater than 5° (an adjustable preset parameter) is flagged as a preliminary anomaly. Cluster analysis is performed on the abnormal phase difference data. If a gradient distribution of phase differences is detected (e.g., phase differences between adjacent branches increase by 1°, 3°, and 5°), the location of poor contact or insulation deterioration is determined. An automatic calibration process is triggered to verify the transformation ratio and phase response characteristics of each branch by injecting a standard test signal. Alarm levels (e.g., warning, severe alarm, and emergency trip) are assigned based on the magnitude and duration of the deviation. Finally, the abnormal branch flag information is used to generate a diagnostic report containing a timestamp, deviation value, and phase characteristics.

[0064] When the mains power supply is operating normally, current enters the cabinet 1 through the first end of the input component 2. The input component 2 transmits the mains power to the main circuit breaker 3. At this point, if the main circuit breaker 3 was previously open, it may close according to control logic or manual operation, allowing current to pass. After the main circuit breaker 3 is closed, the current passes through the main circuit breaker 3 and enters the parallel busbar. The busbar distributes the current to each branch circuit breaker 41, and each branch circuit breaker 41 controls the output current of one channel. The output connector 42 is electrically connected to the busbar through its corresponding branch circuit breaker 41 and is used to transmit power to the external load. The external load receives power through the output connector 42 and begins normal operation. 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 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. It compares the algebraic sum of the instantaneous current values ​​of each branch with the total current value of the busbar to verify the accuracy of current distribution and system stability. Normal operation: If the verification deviation is within the set threshold, the current distribution is normal and the system continues to operate normally. The main monitoring module 51 continuously monitors current data to ensure stable system operation.

[0065] When the master monitoring module 51 flags an abnormal branch, it can take the following actions: It issues an alarm, notifying maintenance personnel for inspection and repair. It automatically cuts off power to the abnormal branch based on pre-set logic to prevent the fault from escalating. It also records the abnormal event, providing a basis for subsequent analysis and troubleshooting.

[0066] The emergency AC power distribution cabinet provided by the present invention can achieve fine control of power supply by integrating a main circuit breaker 3 and multiple output components 4. In the event of a main power failure, if combined with an external power supply, the power 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 3 and the branch circuit breaker 41 can quickly cut off the circuit in the event of overload, short circuit and other faults, 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 found, an alarm can be issued immediately, which facilitates the operation and maintenance personnel to take timely measures, further enhancing safety. At the same time, through real-time dynamic verification and phase collaborative analysis, the problem of distortion in traditional power distribution cabinet monitoring is effectively solved.

[0067] In some embodiments, as Figures 1 to 9As 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.

[0068] In this embodiment, the input connector 21 is the interface between the terminal cabinet and the external power supply, and is used to receive the electrical 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 terminal 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. It can prevent electric shock accidents caused by equipment insulation damage or accidental contact by personnel. The phase line 23 is the main channel for power transmission. It connects the input connector 21 and the main circuit breaker 3, and transmits the power provided by the external power supply to the various components inside the terminal cabinet.

[0069] After electrical energy enters the main cabinet from input connector 21, it is first transmitted to main circuit breaker 3 via phase line 23. Main circuit breaker 3 serves as the master power switch for the entire main cabinet, controlling the on / off of electrical energy. When main circuit breaker 3 is closed, electrical energy continues to be transmitted to each branch circuit breaker 41 via phase line 23. Each branch circuit breaker 41 controls the on / off of an output component 4, that is, the power supply to the corresponding load. When the branch circuit breaker 41 is closed, electrical energy is transmitted to the load device via output connector 42.

[0070] 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 the current in each branch circuit in real time. The monitoring module 5 can detect abnormal changes in current, such as overload and short circuit, and immediately issue an alarm signal to remind operation and maintenance personnel to take timely measures. The presence of the grounding line 22 provides additional safety protection for the load equipment. When the equipment leaks or is accidentally touched by a person, the grounding line 22 can quickly direct the leaked current to the ground, preventing electric shock accidents.

[0071] In some embodiments, as Figure 2 and Figure 3 As shown, the emergency AC train cabinet further includes: a sampling module 6 , which is electrically connected to each branch circuit breaker 41 and is in communication connection with the monitoring module 5 (via RS485 communication protocol).

[0072] Specifically, the sampling module 6 primarily collects on / off signals from 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 real-time status information on each branch circuit breaker 41. The sampling module 6 communicates with the monitoring module 5 via the RS485 communication protocol. RS485 is a commonly used serial communication protocol with advantages such as long transmission distance and strong anti-interference capabilities, making it suitable for complex environments such as industrial sites.

[0073] 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 power on and off signals. The sampling module 6 transmits these signals to the monitoring module 5 via 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 determine the power supply status of each branch and whether there are any abnormalities or faults based on these signals. If the monitoring module 5 detects an abnormality or fault, it will immediately issue an alarm signal to remind the operation and maintenance personnel to take timely measures. At the same time, the monitoring module 5 can also record the fault information for subsequent analysis and processing by the operation and maintenance personnel.

[0074] In some embodiments, the overall monitoring module 51 includes a central processing unit and a difference check unit, and the branch monitoring module 52 includes a current sensor and a high-speed sampling circuit; the current sensor is embedded in the input terminal of the corresponding branch circuit breaker 41, and is used to capture current waveform data at a sampling frequency of not less than 10kHz; the difference check 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 the currents of each branch. When the deviation exceeds 5%, a calibration request signal is sent to the central processing unit, and the central processing unit locates the source of the deviation based on the phase data and generates an alarm signal.

[0075] Specifically, the central processing unit is responsible for processing and analyzing data from the branch monitoring module 52, executing calibration logic, and generating alarm signals. The difference check unit is responsible for comparing the total current value of the busbar with the cumulative sum of the instantaneous current values ​​of each branch in real time to detect any deviations. Current sensors are embedded in the input terminals of the corresponding branch circuit breakers 41 to capture current waveform data. A high-speed sampling circuit works in conjunction with the current sensor to sample current at a sampling frequency of no less than 10kHz, ensuring sufficient resolution and accuracy of the captured current data.

[0076] During operation, the current sensor samples the branch current at a high frequency (no less than 10kHz) to capture current waveform data. This data is transmitted to the branch monitoring module 52 through a high-speed sampling circuit and further uploaded to the main monitoring module 51.

[0077] The total busbar current can also be approximated using a dedicated current sensor or by calculating the sum of the branch currents (in actual implementation, a separate sensor is required to directly measure the total busbar current to ensure accuracy). This total current value is then compared with the cumulative sum of the instantaneous branch currents.

[0078] The difference verification unit compares the total current value of the busbar with the cumulative sum of the instantaneous current values ​​of each branch in real time. If the deviation exceeds a set threshold (such as 5%), the difference verification unit sends a calibration request signal to the central processing unit.

[0079] After receiving the calibration request signal, the central processing unit locates the source of the deviation based on the phase data. The central processing unit then generates an alarm signal, notifying maintenance personnel to conduct inspections and repairs. In some embodiments, the central processing unit may also automatically shut down the power supply to the abnormal branch circuit based on pre-set logic to prevent the fault from escalating.

[0080] like Figure 2 and Figure 3 As shown, the emergency AC train head cabinet also 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 ground line 22. The main function of the surge protector 7 is to absorb and discharge transient overvoltage energy generated by lightning, grid fluctuations, etc., thereby protecting the train head cabinet and the load equipment connected to it 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 ground line 22. This connection method ensures that the surge protector 7 can effectively conduct overvoltage energy into the ground, thereby protecting the safety of the circuit and equipment.

[0081] When an overvoltage occurs on the phase line 23, the surge protector 7 responds quickly, discharging the overvoltage energy to ground through its internal nonlinear resistors or gas discharge tubes. This process is rapid, typically completing within microseconds, effectively protecting circuits and equipment from damage.

[0082] The addition of the SPD 7 significantly improves the safety of the emergency AC power distribution cabinet and its connected loads, reducing the risk of equipment damage from transient overvoltages such as lightning. By protecting circuits and equipment from transient overvoltages, the SPD 7 helps maintain stable system operation and reduces power outages and data loss caused by equipment failures.

[0083] In some embodiments, as Figure 5As shown, at least one side of the cabinet 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 .

[0084] Specifically, display screen 8 is typically used to display real-time status information of the emergency AC power distribution cabinet, such as power parameters of each branch (voltage, current, power, etc.), fault alarm information, system operating status, etc. Through display screen 8, operation and maintenance personnel can intuitively understand the overall status of the system, facilitating remote monitoring and management.

[0085] Indicator light 9 (also known as indicator light 9 or alarm light) is typically used to indicate a specific system status or issue an alert. For example, when a system fault or anomaly occurs, indicator light 9 will illuminate or flash to alert maintenance personnel and allow them to take appropriate action. The color and flashing pattern of indicator light 9 are typically used to indicate different fault types or severity levels.

[0086] In some embodiments, as Figure 1 As shown, the emergency AC display cabinet further includes: a plurality of casters 10 , and the bottom of the cabinet body 1 is connected with the plurality of casters 10 .

[0087] In this embodiment, the number and position of the casters 10 at the bottom of the cabinet 1 are usually determined according to the size, weight and expected usage scenario of the cabinet 1. Generally speaking, the casters 10 will be evenly distributed around the bottom of the cabinet 1 to ensure the stability and balance of the cabinet 1 when moving. There are many types of casters 10, including fixed wheels, universal wheels, brake wheels, etc. Fixed wheels can only move in a fixed direction and are suitable for scenarios where the direction of movement needs to be controlled; universal wheels can rotate 360 ​​degrees and are more flexible; brake wheels can be locked when needed to prevent the cabinet 1 from moving accidentally. Emergency AC display cabinets usually choose the appropriate type of casters 10 based on actual needs. The load-bearing capacity of the casters 10 is also an important factor that needs to be considered during design. Make sure that the load-bearing capacity of the casters 10 can meet the total weight of the cabinet 1 and its internal equipment to avoid damage or safety hazards during movement.

[0088] In some embodiments, as Figures 1 to 10 As shown, the cabinet 1 includes: a left side panel 11, a right side panel 12, a top panel 13, a mounting bracket 14, a front door panel 15 and a rear door panel 16; the left side panel 11, the right side panel 12, the top panel 13, the mounting bracket 14, the front door panel 15 and the rear door panel 16 are spliced ​​with each other to form a accommodating cavity; the bottom of the left side panel 11 is connected to the left side of the mounting bracket 14, the bottom of the right side panel 12 is connected to the right side of the mounting bracket 14, the top panel 13 is connected to the top of the left side panel 11 and the right side panel 12, the front door panel 15 and the rear door panel 16 are both rotatably connected between the mounting bracket 14 and the top panel 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.

[0089] Specifically, the cabinet body 1 is made of 2.0 mm thick cold-rolled steel plate, which has high strength, good toughness and corrosion resistance, and can ensure the stability and durability of the cabinet body 1 during long-term use.

[0090] The cabinet 1 is composed of main structural components such as the left side panel 11, the right side panel 12, the top panel 13, the mounting bracket 14, the front door panel 15 and the rear door panel 16. These components are spliced ​​together through precise processing and connection methods to form a complete cabinet 1 structure.

[0091] The left side panel 11, right side panel 12, top panel 13, and mounting bracket 14 are secured to each other by welding, bolting, or other reliable connection methods to ensure the overall rigidity and stability of the cabinet 1. The front door panel 15 and rear door panel 16 are mounted between the mounting bracket 14 and top panel 13 via rotatable connectors such as hinges to facilitate opening and closing.

[0092] It should be noted that, in order to facilitate the installation of various components, a panel 17 is further provided for accommodating the input assembly 2, the output assembly 4, the main circuit breaker 3, the monitoring module 5, etc.

[0093] In some embodiments, as Figure 10 As shown, an opening 131 is provided on the top, and a brush is provided on the top of the storage cavity to block the opening 131. The main purpose of the opening 131 on the top of the cabinet 1 is to provide a ventilation and heat dissipation channel to ensure that the electrical components inside the cabinet 1 can effectively dissipate heat during operation and prevent overheating from causing equipment failure or damage. The brush that blocks the opening 131 is usually made of a soft and durable material, such as nylon or polypropylene fiber. These brushes have dense bristles that can effectively prevent dust, debris, small animals, etc. from entering the storage cavity, thereby protecting the electrical components inside the cabinet 1 from damage.

[0094] The provision of opening 131 allows heat from inside cabinet 1 to be dissipated through natural convection or forced ventilation, thereby ensuring that electrical components operate within a suitable temperature range and extending the service life of the equipment. The brush, acting as a sealant for opening 131, effectively blocks dust, debris, and small animals (such as mice and insects) from entering cabinet 1, preventing these debris from causing short circuits, damage, or interference to electrical components.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions 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 electrically connecting 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 assemblies, each comprising a branch circuit breaker and an output connector, each branch circuit breaker being electrically connected to the second end of the main circuit breaker via a parallel busbar, and the output connector being electrically connected to the busbar via the corresponding branch circuit breaker, so as to be electrically connected to an external load via the output connector; The monitoring module includes a main monitoring module and multiple branch monitoring modules; each branch monitoring module is electrically connected to the corresponding branch circuit breaker, and the main monitoring module is electrically connected to each branch monitoring module; the main 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 a dynamic difference check on the algebraic sum of the instantaneous value of each branch current and the total current value of the busbar. When the check deviation in multiple consecutive sampling periods exceeds a set threshold, a branch current calibration instruction is triggered; the phase data of the main 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; 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 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; 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 in 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 processing unit, and the central processing unit locates the source of the deviation based on the phase data and generates an alarm signal.

2. The emergency AC terminal cabinet according to claim 1, characterized in that: The emergency AC array cabinet also includes: The sampling module is electrically connected to each of the branch circuit breakers and is in communication connection with the monitoring module, collects power-on and power-off signals of a corresponding number of the branch circuit breakers, and transmits the collected power-on and power-off signals to the monitoring module.

3. The emergency AC terminal cabinet according to claim 1, characterized in that: The input connector and the output connector both include a connector plug and / or a connector socket.

4. The emergency AC terminal cabinet according to claim 1, characterized in that: The emergency AC array 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.

5. The emergency AC train cabinet according to any one of claims 1 to 4, 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 are electrically connected to the monitoring module.

6. The emergency AC train cabinet according to any one of claims 1 to 4, characterized in that: The emergency AC display cabinet further comprises: a plurality of casters, and the bottom of the cabinet body is connected to the plurality of casters.

7. The emergency AC train cabinet according to any one of claims 1 to 4, characterized in that: The cabinet includes: 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 panel, the right side panel, the top panel, the mounting bracket, the front door panel and the rear door panel 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.

8. The emergency AC terminal cabinet according to claim 7, characterized in that: An opening is provided on the top, and a brush for blocking the opening is provided on the top of the accommodating cavity.

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