A direct current power distribution room system

Abstract

The utility model relates to a power distribution room direct current power connection technical field discloses a kind of power distribution room direct current power connection system, including measurement and control terminal box, test terminal box, power management module, current measurement module, voltage measurement module, live display module, humidity monitoring module, door control module, leakage protection module, data metering and management module, communication module, intelligent operation and maintenance management module, safety protection module, the signal input end signal connection of voltage measurement module and live display module, data metering and management module, leakage protection module, door control module, humidity monitoring module, live display module are all with communication module communication connection.In the utility model, the connection of fuse in safety protection module and power management module can quickly cut off local fault link when power loop short circuit, overload and other faults, avoid the spread of fault to central bus, reduce the influence range of single fault to overall system.

Description

Technical Field

[0001] This utility model relates to the field of DC power connection technology for power distribution rooms, and in particular to a DC power connection system for power distribution rooms. Background Technology

[0002] With society's increasing reliance on electricity, the power distribution room, as a core node for power transmission and distribution, directly impacts industrial production, commercial operations, and residents' lives due to its power supply stability. However, in previous technologies, power distribution rooms typically employed centralized DC power supply systems, where a single central DC power source supplies power to all loads, which are then distributed to individual electrical devices via busbars. A failure in the central DC power source or busbars directly affects the power supply to all loads, reducing the overall reliability of the system. Therefore, there is a need to develop a DC power connection system for power distribution rooms. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a DC power supply system for power distribution rooms, aiming to improve the problem that the existing power distribution rooms usually adopt a centralized DC power supply system, that is, powering all loads through a single central DC power supply and then distributing to each electrical device through a bus. However, once the central DC power supply or bus fails, it will directly affect the power supply to all loads, reducing the overall reliability of the system.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a DC power connection system for a power distribution room, comprising a measurement and control junction box, a test junction box, a power management module, a current measurement module, a voltage measurement module, a live display module, a humidity monitoring module, a gate control module, a leakage current protection module, a data metering and management module, a communication module, an intelligent operation and maintenance management module, and a safety protection module. The output terminal of the power management module is connected to the current measurement module, voltage measurement module, live display module, humidity monitoring module, gate control module, leakage current protection module, data metering and management module, communication module, and intelligent operation and maintenance management module. All safety protection modules are electrically connected. The output terminals of the current measurement module and voltage measurement module are both connected to the signal input terminal of the data metering and management module. The voltage measurement module is connected to the signal input terminal of the live display module. The data metering and management module, leakage protection module, gate control module, humidity monitoring module, and live display module are all connected to the communication module. The communication module is connected to the intelligent operation and maintenance module. The live display module is connected to the intelligent operation and maintenance module. The signal output terminals of the gate control module and the intelligent operation and maintenance module are both connected to the control terminal of the multi-level safety protection module.

[0005] Through the above technical solution: the power management module is the core of the entire system's power supply, providing stable power to other modules and ensuring that each module works collaboratively under stable voltage. This avoids data acquisition errors, communication interruptions, or control failures caused by unstable power supply, providing fundamental support for the metering accuracy, real-time remote monitoring, and effective safety protection of the DC system in the power distribution room. The communication module is key to realizing remote data transmission and interaction between modules. These modules need to upload their own data to the intelligent operation and maintenance module through the communication module, while receiving instructions from the intelligent operation and maintenance module, and then forwarding the instructions to the corresponding modules for execution. This enables the intelligent operation and maintenance module to remotely monitor, control, and manage the entire DC power connection system in the power distribution room, and to realize the linkage of safety protection based on door status changes and decisions made by the intelligent operation and maintenance module.

[0006] As a further description of the above technical solution: The power management module includes a main power supply, a backup battery, a dual power switching unit, and an automatic air switch. The automatic air switch is connected to an external AC220V power supply. The main power supply and the backup battery are electrically connected to the input terminals of the dual power switching unit. The output terminal of the dual power switching unit is electrically connected to the automatic air switch. The automatic air switch is connected in series in the power input and output circuits of the power management module. The output terminal of the automatic air switch is electrically connected to the current measurement module, voltage measurement module, live display module, humidity monitoring module, gate control module, data metering and management module, communication module, and intelligent operation and maintenance module.

[0007] The above technical solutions ensure that the core functions of the system are not interrupted in the event of a main power failure through the power management module. The overload and short circuit protection of the automatic air switch can isolate the faulty circuit, protect the power supply equipment and other modules, and provide a safe power outage isolation point for operation and maintenance. By connecting an external AC220V power supply through the automatic air switch, it can be adapted to AC auxiliary equipment, avoid overload of the main DC circuit, and ensure stable power supply to the core modules.

[0008] As a further description of the above technical solution: The current measurement module includes a current transformer, the voltage measurement module includes a voltage transformer, the live display module includes a live display, and the communication module includes an RS-485 communication unit, a wireless communication unit, and a protocol conversion unit. The protocol conversion unit is used to achieve protocol compatibility between modules.

[0009] The above technical solution achieves electrical isolation between the main circuit's high-voltage signals and other modules, preventing damage to metering and monitoring equipment from high-voltage, high-current signals. It also provides compliant current and voltage signals to the data metering and management modules, laying the foundation for accurate energy metering and system operation parameter monitoring. Furthermore, the voltage signals provide a data source for the live display module, allowing maintenance personnel to determine the equipment's energized status without direct contact with the high-voltage circuit, effectively mitigating the risk of electric shock from misoperation and ensuring a direct assessment of the system's energized status. This provides direct safety alerts for daily inspections and equipment maintenance in the power distribution room. Finally, the communication module enables bidirectional communication between local data uploads and remote command reception, providing communication support for intelligent system management.

[0010] As a further description of the above technical solution: The gate control module includes a gate control terminal, a gate contact, a gate control switch, and a limit switch. The signal output terminals of the gate control switch and the limit switch are connected to the gate control terminal. The gate control terminal is connected to the signal acquisition terminal of the communication module and the linkage control terminal of the multi-level safety protection module, respectively.

[0011] The above technical solution involves real-time acquisition of the door's opening and closing status via door control switches and limit switches, with the signals aggregated at the door control terminal. The door control terminal then transmits the status signals to the communication module for remote monitoring. It can also send linkage signals to multi-level security protection modules, thus enabling real-time monitoring of the power distribution room door status and effectively preventing security risks caused by unauthorized intrusion.

[0012] As a further description of the above technical solution: The data metering and management module includes a multi-functional electricity meter, a distribution transformer terminal meter, and a data processing unit. The multi-functional electricity meter and the distribution transformer terminal meter are both connected to the data processing unit via signal connections. The multi-functional electricity meter is also connected to the output terminals of the current measurement module and the voltage measurement module via signal connections, and is used to receive the output current and voltage signals to achieve energy metering. The data processing unit communicates with the intelligent operation and maintenance module through the wireless communication unit of the communication module to transmit metering data and energy consumption analysis results.

[0013] Through the above technical solution, the data metering and management module can receive signals from the current and voltage measurement modules of the multi-functional electricity meter to realize electricity metering. Combined with the equipment operation data collected by the distribution transformer terminal meter, the data is transmitted to the data processing unit for aggregation and analysis. This not only ensures the accurate metering of electricity data but also generates energy consumption analysis results. Then, the metering data and analysis results are uploaded to the intelligent operation and maintenance module through the wireless communication unit of the communication module. This not only realizes remote monitoring and meter reading of electricity data but also provides data support for operation and maintenance personnel to formulate energy consumption optimization strategies and judge equipment operating status, thereby improving the intelligence and efficiency of power distribution room power management.

[0014] As a further description of the above technical solution: The safety protection module includes a fuse, an audible and visual alarm unit, and a safety linkage relay. The fuse is electrically connected to the power management module, the audible and visual alarm unit is electrically connected to the safety linkage relay, the safety linkage relay is signal-connected to the door control terminal, and the safety linkage relay is signal-connected to the leakage current protection module. Both the audible and visual alarm unit and the safety linkage relay are bidirectionally connected to the communication module.

[0015] Through the above technical solution: the safety protection module is electrically connected to the power management module via a fuse, which can quickly blow when a short circuit or severe overload occurs in the power circuit, cutting off the fault circuit to protect the main power supply, backup battery and other modules, forming the first safety barrier at the power end. It is electrically connected to the safety linkage relay through the audible and visual alarm unit, and in conjunction with the safety linkage relay, it receives abnormal door status signals from the door control terminal and leakage fault signals from the leakage protection module. When a safety risk is triggered, it can immediately activate the audible and visual alarm to remind on-site personnel to take timely action. Furthermore, through bidirectional communication between the audible and visual alarm unit, the safety linkage relay and the communication module, the alarm status can be uploaded to the intelligent operation and maintenance module, and it can also receive remote reset commands. This not only realizes rapid response to local safety risks, but also ensures that remote operation and maintenance personnel have real-time control over the safety status, thus building a dual safety guarantee system of local protection and remote monitoring.

[0016] As a further description of the above technical solution: The humidity monitoring module includes a humidity sensor and a humidity controller. The humidity controller is powered by an external AC220V power supply. The signal output terminal of the humidity sensor is connected to the signal input terminal of the humidity controller. The humidity sensor is used to collect humidity data from relevant areas of the power distribution room. The humidity controller is used to receive signals from the humidity sensor. The humidity controller is connected to a heater. The humidity controller is also connected to a communication module.

[0017] Through the above technical solution: the humidity monitoring module collects humidity signals from the power distribution room through a humidity sensor and transmits them to the humidity controller. The humidity controller can achieve stable operation through an external AC220V independent power supply. It can automatically control the start and stop of the heater based on the received humidity data, realizing local automatic regulation of the humidity in the power distribution room. Through connection with the communication module, it uploads real-time humidity data and heater operating status to the system, and receives remote control commands, enabling maintenance personnel to remotely monitor humidity changes and manually intervene in heater operation. This forms a dual humidity protection mechanism of local automatic adjustment and remote intelligent management, effectively preventing equipment insulation degradation, short circuits and other faults caused by humid environment, and ensuring the safe and stable operation of power distribution room equipment.

[0018] As a further description of the above technical solution: The test junction box is electrically connected to the voltage transformer, current transformer, multi-function electricity meter, and distribution transformer terminal meter. The control junction box is connected to the negative control terminal, and the door signal contact of the negative control terminal is connected to the normally closed contact of the door switch.

[0019] Through the above technical solution, the system realizes online testing and calibration functions by electrically connecting the test junction box to the voltage transformer, current transformer, multi-functional electricity meter and distribution transformer terminal meter. The system can connect to the testing equipment without disconnecting the main circuit, ensuring the accuracy of electricity metering and the efficiency of fault diagnosis. The system also connects to the load control terminal through the measurement and control junction box and links the normally closed contacts of the door switch, enabling the load control terminal to monitor the status of the distribution room door in real time.

[0020] This utility model has the following beneficial effects: 1. In this utility model, the main circuit signal can be converted into a standard signal through the current measurement module and the voltage measurement module, and the power output and load operation status can be monitored in real time, providing a metering basis for the multi-functional electricity meter. Through the connection between the fuse in the safety protection module and the power management module, the local fault link can be quickly cut off in the event of short circuit, overload and other faults in the power circuit, so as to prevent the fault from spreading to the central bus and reduce the impact of a single fault on the overall system.

[0021] 2. In this utility model, the door status is collected in real time through the door control module, and the safety linkage relay is triggered through the door control terminal to trigger the audible and visual alarm unit to issue a warning. The leakage protection module works in conjunction with the safety linkage relay to respond quickly in case of leakage fault. The fuse can serve as the first barrier at the power supply end to avoid damage to the equipment due to short circuit overload. The live display module can intuitively display the live status to prevent electric shock due to accidental operation. The humidity monitoring module automatically adjusts the ambient humidity to avoid equipment failure caused by humidity.

[0022] 3. In this utility model, the heater can be automatically started and stopped by the humidity controller, and the power supply parameters are collected synchronously by the data metering and management module. Then, the data is uploaded to the intelligent operation and maintenance module through the communication module. The operation and maintenance personnel can remotely monitor the operating status of the central power supply, bus and each load in real time without frequent on-site inspections. This not only reduces the intensity and cost of manual operation and maintenance, but also shortens the fault response time and improves the overall operation and maintenance efficiency and intelligence level of the power distribution room.

[0023] 4. In this utility model, the data processing unit of the data metering and management module integrates power data and distribution transformer information to generate energy consumption analysis results, which are then uploaded to the intelligent operation and maintenance module via the communication module for real-time monitoring of power load and distribution transformer status. This process not only replaces traditional manual meter reading and data statistics, significantly improving the accuracy of power metering and data processing efficiency, but also allows the real-time data of the power distribution room to be uploaded to the intelligent operation and maintenance module via the communication module, achieving a combination of local protection and remote monitoring. This comprehensively prevents risks such as electric shock, illegal intrusion, and equipment failure, thus building a solid defense for the safe operation of the power distribution room. Attached Figure Description

[0024] Figure 1 This utility model provides an electrical wiring diagram for a DC power supply system in a power distribution room. Figure 2 This utility model provides a schematic block diagram of the system module connection of a DC power connection system for a power distribution room. Figure 3 This utility model provides a schematic block diagram of the communication module composition of a DC power connection system for a power distribution room. Figure 4 This is a schematic block diagram of the data metering and management module of a DC power connection system for a power distribution room proposed in this utility model; Figure 5 This utility model provides a schematic block diagram of the gate control module of a DC power connection system for a power distribution room. Figure 6 This utility model provides a schematic block diagram of the safety protection module composition of a DC power connection system for a power distribution room. Figure 7 This is a schematic block diagram of the humidity monitoring components of a DC power connection system for a power distribution room proposed in this utility model. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a DC power supply system for a power distribution room, comprising a measurement and control junction box, a test junction box, a power management module, a current measurement module, a voltage measurement module, a live display module, a humidity monitoring module, a gate control module, a leakage protection module, a data metering and management module, a communication module, an intelligent operation and maintenance management module, and a safety protection module. The output terminal of the power management module is electrically connected to the current measurement module, voltage measurement module, live display module, humidity monitoring module, gate control module, leakage protection module, data metering and management module, communication module, intelligent operation and maintenance management module, and safety protection module. The output terminals of the current measurement module and voltage measurement module are both connected to the signal input terminal of the data metering and management module. The voltage measurement module is connected to the signal input terminal of the live display module. The data metering and management module, leakage protection module, gate control module, humidity monitoring module, and live display module are all connected to the communication module. The communication module is connected to the intelligent operation and maintenance module. The live display module is connected to the intelligent operation and maintenance module. The signal output terminals of the gate control module and the intelligent operation and maintenance module are both connected to the control terminal of the multi-level safety protection module. Specifically, the power management module enables the current measurement module to properly acquire current signals from the main circuit, perform current monitoring and conversion, thus providing a data foundation for subsequent data metering and protection functions. A stable power supply from the power management module ensures the voltage measurement module can accurately measure system voltage, providing a voltage signal source for data metering, live display, and other functions. The live display module can then display the system's energization status in real time, providing maintenance personnel with an intuitive indication of the energized state and ensuring operational safety. The humidity monitoring module can continuously monitor the ambient humidity in the power distribution room; when the humidity exceeds a set threshold, appropriate measures can be taken to protect electrical equipment from moisture, extend equipment lifespan, and ensure the normal operation of the gate control module, thereby enabling control of the power distribution system. The detection and control of the room door status enables the leakage current protection module to monitor the leakage current in the circuit in real time. When a leakage fault occurs, it quickly cuts off the circuit to ensure the safety of personnel and equipment. It also ensures the normal operation of the data metering and management module, enabling the metering, processing, and storage of electrical parameters, providing data support for power management and operation and maintenance. Furthermore, it ensures the normal operation of the communication module, enabling data communication and interaction between modules and with the intelligent operation and maintenance module, giving the system remote monitoring and control capabilities. This allows the intelligent operation and maintenance management module to receive, process, and analyze data from various modules, thereby achieving remote monitoring, fault diagnosis, and operation and maintenance decision-making for the power distribution room, improving operation and maintenance efficiency and management level. Finally, it ensures the normal operation of the safety protection module, responding to system anomalies. Timely protective measures are taken to ensure the safe and stable operation of the system. Simultaneously, the data metering and management module requires signals from the current and voltage measurement modules to achieve accurate energy metering and electrical parameter analysis. The current measurement module transmits the collected current signal to the data metering and management module, and the voltage measurement module transmits the measured voltage signal to the data metering and management module, providing necessary parameters for energy metering. The voltage measurement module also transmits the system voltage signal to the energized display module, which visually displays whether the system is energized based on the received voltage signal, allowing maintenance personnel to confirm the system status before operation and avoid misoperation. The data metering and management module communicates the metered and processed electrical parameters through the communication module. Data is uploaded to the intelligent operation and maintenance module, allowing maintenance personnel to remotely view and analyze power usage, manage energy consumption, and make maintenance decisions. Simultaneously, through a two-way connection, it can also receive instructions from the intelligent operation and maintenance module. When the leakage current protection module detects a leakage fault, it uploads the fault information to the intelligent operation and maintenance module via the communication module, allowing maintenance personnel to promptly understand the fault situation. The door control module can upload detected door status information to the intelligent operation and maintenance module via the communication module, enabling maintenance personnel to remotely monitor door status and promptly detect abnormalities such as unauthorized entry. The humidity monitoring module can send monitored environmental humidity data and related alarm information to the intelligent operation and maintenance module via the communication module, allowing maintenance personnel to monitor the humidity conditions in the power distribution room in real time.The live-line display module not only displays the live-line status locally but also uploads this information to the intelligent operation and maintenance module via the communication module, enabling remote monitoring. This allows maintenance personnel to understand the system's live-line status without entering the power distribution room. The live-line display module directly transmits real-time live-line status signals to the intelligent operation and maintenance module, which then updates the system status display accordingly. This provides a more intuitive view of the system's live-line status on the remote monitoring interface. When the door control module detects that a door has been opened, it transmits a signal to the multi-level safety protection module. The safety linkage relay in the safety protection module activates, cutting off the high-voltage side circuit power supply to prevent personnel from accidentally touching live equipment. Simultaneously, it triggers the audible and visual alarm unit to issue an alarm, alerting on-site personnel to take safety precautions. The intelligent operation and maintenance module comprehensively analyzes and judges the data received from various modules. When a safety hazard is detected, it sends control commands to the multi-level safety protection module, which then executes the corresponding protective actions, thereby ensuring the safe and stable operation of the system.

[0027] Reference Figure 2 The power management module includes a main power supply, a backup battery, a dual power switching unit, and an automatic air switch. The automatic air switch is connected to an external AC220V power supply. The main power supply and the backup battery are electrically connected to the input terminals of the dual power switching unit. The output terminal of the dual power switching unit is electrically connected to the automatic air switch. The automatic air switch is connected in series in the power input and output circuits of the power management module. The output terminal of the automatic air switch is electrically connected to the current measurement module, voltage measurement module, live display module, humidity monitoring module, gate control module, data metering and management module, communication module, and intelligent operation and maintenance module. Specifically, the main power supply is the system's regular power source. A backup battery serves as an emergency power source in case of main power failure. Both must be connected to the input of the dual power switching unit for seamless switching. When the main power supply fails, the dual power switching unit automatically switches to the backup battery within milliseconds to prevent the interruption of core system functions due to power loss. An automatic air circuit breaker is connected in series in the power circuit, acting as a main switch to provide overload and short-circuit protection, and also providing a safe isolation point for maintenance. In the event of a short-circuit fault, the instantaneous large current triggers the automatic air circuit breaker's instantaneous tripping function, quickly cutting off the power circuit and protecting the dual power switching unit, main power supply, battery, and other core power supply equipment from short-circuit impact. When system equipment needs maintenance, disconnecting the automatic air circuit breaker prevents electric shock to maintenance personnel, ensuring operational safety. A separate AC220V power supply via the automatic air circuit breaker reduces the load on the main power supply and can accommodate the power consumption characteristics of different modules.

[0028] Reference Figure 2 , Figure 3and Figure 5 The current measurement module includes a current transformer, the voltage measurement module includes a voltage transformer, the live display module includes a live display, the communication module includes an RS-485 communication unit, a wireless communication unit, and a protocol conversion unit. The protocol conversion unit is used to achieve protocol compatibility between modules. The gate control module includes gate control terminals, gate contacts, gate control switches, and limit switches. The signal output terminals of the gate control switches and limit switches are connected to the gate control terminals. The gate control terminals are respectively connected to the signal acquisition terminal of the communication module and the linkage control terminal of the multi-level safety protection module. Specifically, current transformers convert large currents in the main circuit to small currents, and voltage transformers convert high voltages to low voltages, providing safe signals within the equipment's input range for subsequent metering and monitoring. This prevents damage caused by directly connecting high voltages and large currents to the equipment. A live indicator receives voltage signals from the voltage measurement module and displays whether the system is energized, providing real-time safety alerts for maintenance personnel and preventing accidental electric shock. An RS-485 communication unit enables short-range wired data transmission, while wireless communication enables remote data interaction. A protocol conversion unit resolves communication protocol differences between different modules, ensuring cross-module compatible data transmission. Door switches and limit switches in the door control module detect the door's open / closed status and transmit the signals to the door control terminal for aggregation. The door control terminal not only uploads the status to the intelligent maintenance module via the communication module but also sends linkage signals to multi-level safety protection modules, combining status monitoring and safety protection functions.

[0029] Reference Figure 2 and Figure 4 The data metering and management module includes a multi-functional electricity meter, a distribution transformer terminal meter, and a data processing unit. The multi-functional electricity meter and the distribution transformer terminal meter are both connected to the data processing unit via signal. The multi-functional electricity meter is connected to the output terminals of the current measurement module and the voltage measurement module via signal. It is used to receive the output current and voltage signals to realize electricity metering. The data processing unit communicates with the intelligent operation and maintenance module through the wireless communication unit of the communication module to transmit metering data and energy consumption analysis results. Specifically, the multi-functional electricity meter in the data metering and management module can receive signals from current transformers and voltage transformers for accurate metering. The transformer terminal meter can collect transformer operation data, which is transmitted to the data processing unit along with the multi-functional electricity meter data. The data processing unit summarizes and analyzes the data, and then uploads it to the intelligent operation and maintenance module via the wireless communication unit, providing a basis for remote meter reading and load management.

[0030] Reference Figure 2 , Figure 6 and Figure 7The safety protection module includes a fuse, an audible and visual alarm unit, and a safety linkage relay. The fuse is electrically connected to the power management module, the audible and visual alarm unit is electrically connected to the safety linkage relay, the safety linkage relay is signal-connected to the door control terminal, and the safety linkage relay is signal-connected to the leakage protection module. Both the audible and visual alarm unit and the safety linkage relay are bidirectionally connected to the communication module. The humidity monitoring module includes a humidity sensor and a humidity controller. The humidity controller is powered by an external AC220V power supply. The signal output terminal of the humidity sensor is connected to the signal input terminal of the humidity controller. The humidity sensor is used to collect humidity data from relevant areas of the power distribution room, and the humidity controller is used to receive the humidity sensor signal. The humidity controller is connected to a heater and is also connected to the communication module. The test junction box is electrically connected to the voltage transformer, current transformer, multi-function electricity meter, and distribution transformer terminal meter. The test and control junction box is signal-connected to the negative control terminal, and the door signal contact of the negative control terminal is connected to the normally closed contact of the door switch. Specifically, the fuse, connected to the power management module, serves as protection for the power circuit. It blows in the event of a short circuit or severe overload, cutting off power to protect other modules. A safety linkage relay receives signals from the gate control terminal and the leakage current protection module indicating a leakage fault, triggering an audible and visual alarm unit to alert personnel. Simultaneously, it can cut off power to dangerous circuits. Through bidirectional communication between the audible and visual alarm unit, the safety linkage relay, and the communication module, alarm status can be uploaded to the intelligent maintenance module, and remote reset or control commands can be received, achieving coordinated local and remote protection. The humidity controller, powered by an external AC220V power supply, can operate independently, preventing controller failure due to sensor malfunction or module power outages. This ensures uninterrupted humidity monitoring and control. By comparing the measured humidity with the set threshold through the humidity controller, if the set threshold is exceeded, the heater can be automatically controlled to start dehumidification. The humidity data can be uploaded via RS-485 bus and communication module. The heater can be remotely controlled via wireless transmission unit to ensure a dry operating environment for the equipment. The voltage transformer, current transformer, multi-function electricity meter, and distribution transformer terminal meter are connected through the test junction box. The main circuit can be disconnected to connect to the testing equipment to ensure metering accuracy. The signal is connected to the load control terminal through the measurement and control junction box. The load control terminal obtains the door status signal through the normally closed contact of the door switch, thereby realizing remote monitoring of the door status and triggering an abnormal intrusion alarm in conjunction with the safety protection module.

[0031] Working Principle: First, the main power supply and backup battery in the power management module form a redundant power supply through a dual power switching unit, ensuring seamless switching in case of main power failure. Then, an automatic air switch provides overload and short-circuit protection and distributes power to other modules. The current transformer in the current measurement module is connected in series with the main circuit to convert large currents to the required smaller currents. Similarly, the voltage transformer in the voltage measurement module is connected in parallel with the main circuit to convert high voltages to the required low voltages. Both transformers then transmit signals to the multi-functional electricity meter in the data metering and management module, providing basic parameters for energy metering. The voltage measurement module can also transmit the voltage to the live display module, thereby providing real-time feedback on the system's live status. In the humidity monitoring module, an AC220V power supply is connected to the humidity controller. After receiving the signal from the humidity sensor, the controller compares it with the threshold and can automatically control whether the heater dehumidifies. The door status can be detected through the door control switch and limit switch of the door control module. The signal is then collected through the door control terminal and triggered by the safety linkage relay of the safety protection module. At the same time, the signal is uploaded to the communication module, and then the communication module uploads the signal status to the intelligent operation and maintenance module, thereby realizing local safety linkage and status acquisition. The communication module receives humidity data from the humidity controller, door status signals from the door control terminal, and energy consumption analysis results from the data processing unit of the data metering and management module via an RS-485 bus. This data is then remotely transmitted to the intelligent operation and maintenance module via the wireless communication unit. Simultaneously, the protocol conversion unit resolves protocol compatibility issues between modules. The intelligent operation and maintenance module can comprehensively analyze the received data and remotely issue commands. These commands are then transmitted to the humidity controller via the communication module to remotely start and stop the heater, or to the safety protection module to control the reset of the audible and visual alarm unit. The load control terminal receives the normally closed contact signal of the door switch via the measurement and control junction box. The test junction box serves as a relay hub for voltage and current signals, facilitating the calibration of metering equipment. Ultimately, through the circuit connections and signal interactions of each module, a global synergy is achieved, ensuring reliable power supply, accurate energy metering, intelligent environmental control, and real-time safety protection in the power distribution room.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A DC power connection system for a power distribution room, comprising a measurement and control junction box, a test junction box, a power management module, a current measurement module, a voltage measurement module, a live display module, a humidity monitoring module, a door control module, a leakage current protection module, a data metering and management module, a communication module, an intelligent operation and maintenance management module, and a safety protection module, characterized in that: The output terminal of the power management module is electrically connected to the current measurement module, voltage measurement module, live display module, humidity monitoring module, gate control module, leakage protection module, data metering and management module, communication module, intelligent operation and maintenance management module, and safety protection module. The output terminals of the current measurement module and voltage measurement module are both connected to the signal input terminal of the data metering and management module. The voltage measurement module is connected to the signal input terminal of the live display module. The data metering and management module, leakage protection module, gate control module, humidity monitoring module, and live display module are all connected to the communication module. The communication module is connected to the intelligent operation and maintenance module. The live display module is connected to the intelligent operation and maintenance module. The signal output terminals of the gate control module and intelligent operation and maintenance module are both connected to the control terminal of the multi-level safety protection module.

2. The DC power connection system for a power distribution room according to claim 1, characterized in that: The power management module includes a main power supply, a backup battery, a dual power switching unit, and an automatic air switch. The automatic air switch is connected to an external AC220V power supply. The main power supply and the backup battery are electrically connected to the input terminals of the dual power switching unit. The output terminal of the dual power switching unit is electrically connected to the automatic air switch. The automatic air switch is connected in series in the power input and output circuits of the power management module. The output terminal of the automatic air switch is electrically connected to the current measurement module, voltage measurement module, live display module, humidity monitoring module, gate control module, data metering and management module, communication module, and intelligent operation and maintenance module.

3. A DC power connection system for a power distribution room according to claim 1, characterized in that: The current measurement module includes a current transformer, the voltage measurement module includes a voltage transformer, the live display module includes a live display, and the communication module includes an RS-485 communication unit, a wireless communication unit, and a protocol conversion unit. The protocol conversion unit is used to achieve protocol compatibility between modules.

4. A DC power connection system for a power distribution room according to claim 1, characterized in that: The gate control module includes a gate control terminal, a gate contact, a gate control switch, and a limit switch. The signal output terminals of the gate control switch and the limit switch are connected to the gate control terminal. The gate control terminal is connected to the signal acquisition terminal of the communication module and the linkage control terminal of the multi-level safety protection module, respectively.

5. A DC power connection system for a power distribution room according to claim 1, characterized in that: The data metering and management module includes a multi-functional electricity meter, a distribution transformer terminal meter, and a data processing unit. The multi-functional electricity meter and the distribution transformer terminal meter are both connected to the data processing unit via signal connections. The multi-functional electricity meter is also connected to the output terminals of the current measurement module and the voltage measurement module via signal connections, and is used to receive the output current and voltage signals to achieve energy metering. The data processing unit communicates with the intelligent operation and maintenance module through the wireless communication unit of the communication module to transmit metering data and energy consumption analysis results.

6. A DC power connection system for a power distribution room according to claim 1, characterized in that: The safety protection module includes a fuse, an audible and visual alarm unit, and a safety linkage relay. The fuse is electrically connected to the power management module, the audible and visual alarm unit is electrically connected to the safety linkage relay, the safety linkage relay is signal-connected to the door control terminal, and the safety linkage relay is signal-connected to the leakage current protection module. Both the audible and visual alarm unit and the safety linkage relay are bidirectionally connected to the communication module.

7. A DC power connection system for a power distribution room according to claim 1, characterized in that: The humidity monitoring module includes a humidity sensor and a humidity controller. The humidity controller is powered by an external AC220V power supply. The signal output terminal of the humidity sensor is connected to the signal input terminal of the humidity controller. The humidity sensor is used to collect humidity data from relevant areas of the power distribution room. The humidity controller is used to receive signals from the humidity sensor. The humidity controller is connected to a heater. The humidity controller is also connected to a communication module.

8. A DC power connection system for a power distribution room according to claim 1, characterized in that: The test junction box is electrically connected to the voltage transformer, current transformer, multi-function electricity meter, and distribution transformer terminal meter. The control junction box is connected to the negative control terminal, and the door signal contact of the negative control terminal is connected to the normally closed contact of the door switch.

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