High-voltage grid-connected cabinets with DC panel display

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It is an electrical equipment used for grid-connected operations in high-voltage power systems and equipped with the function of DC panel display. The following is a detailed introduction for you:

### Structural Composition
- **High-voltage Switchgear Part**: It contains high-voltage electrical components such as circuit breakers, disconnectors, earthing switches, and busbars. It is used to realize operations such as connecting, disconnecting, isolating, and earthing high-voltage circuits to ensure the safe operation of the power system.
- **DC Panel Part**: It mainly consists of charging modules, battery packs, monitoring devices, insulation monitoring devices, etc. The charging module converts alternating current into direct current, charges the battery packs, and provides a stable DC power supply for the control, protection, and signal circuits of the high-voltage switchgear. The battery pack serves as a backup power source and can continue to supply power to DC loads when the mains power is cut off or there is an AC power failure, ensuring the normal operation of the equipment. The monitoring device is used to monitor the operating parameters of the DC panel in real time, such as voltage, current, battery capacity, etc., and display them intuitively through the display screen.

### Working Principle
- **High-voltage Grid-connected Function**: In the high-voltage power system, the electrical energy generated by power generation equipment (such as generators, photovoltaic power plants, wind power plants, etc.) is incorporated into the power grid. The high-voltage grid-connected cabinet realizes the electrical connection between the power generation equipment and the power grid through controlling the opening and closing operations of switchgear such as circuit breakers. Meanwhile, it has protection functions such as over-current, over-voltage, under-voltage, and leakage protection to ensure the safety and reliability of the grid-connected process.
- **DC Panel Display Principle**: The monitoring device in the DC panel collects the operating data of equipment such as charging modules and battery packs in real time through sensors. Then, it processes and analyzes these data and finally displays them intuitively on the display screen in the form of numbers, charts, etc. Users can know the working status of the DC panel at any time through the display screen, such as DC voltage, current, battery charging and discharging conditions, fault alarm information, etc.

### Performance Parameters
- **Rated Voltage**: Commonly 10 kV, 35 kV, etc. Different application scenarios and power grid requirements will lead to the selection of different rated voltage levels.
- **Rated Current**: It is determined according to the actual application requirements and generally ranges from several hundred amperes to several thousand amperes, for example, 630 A, 1250 A, 2000 A, etc.
- **Short-circuit Withstand Current**: It reflects the magnitude of the current that the equipment can withstand in the event of a short-circuit fault and is usually between dozens of kiloamperes and hundreds of kiloamperes, such as 31.5 kA, 40 kA, 50 kA, etc.

### Application Fields
- **Power System**: It is used in places such as power plants and substations to realize the grid-connected connection between generators and the power grid and to control and protect high-voltage equipment.
- **Industrial Field**: In large factories, mines, metallurgy, chemical and other enterprises, it is used to incorporate the power of self-provided power stations into the internal power grid of the enterprise to meet the production power consumption requirements.
- **New Energy Field**: It is widely used in new energy power generation projects such as photovoltaic power plants and wind farms to transmit the electrical energy generated by new energy power generation equipment to the power grid.

### Advantages
- **Improve Power Supply Reliability**: As a backup power source, the DC panel can be put into use in a timely manner when the mains power fails, providing uninterrupted power supply for key equipment and avoiding production interruptions or equipment damage caused by power outages.
- **Real-time Monitoring and Display**: Through the display function of the DC panel, users can know the operating status and parameters of the equipment in real time, discover potential fault隐患 in a timely manner, and take corresponding measures to deal with them, improving the maintenance efficiency and operation safety of the equipment.
- **Integration and Intelligence**: Integrating the high-voltage switchgear and the DC panel together reduces the floor area occupied by the equipment. Meanwhile, it has intelligent monitoring and protection functions and can realize remote control, automated operation, and fault diagnosis, improving the intelligent level and management efficiency of the power system.

### Precautions
- **Regular Maintenance**: Conduct regular maintenance and inspection on the high-voltage grid-connected cabinet, including checking whether the connections of electrical components are loose, whether the insulation is good, whether the contacts are worn, etc. At the same time, conduct charge-discharge tests and maintenance on the battery packs of the DC panel to ensure their good performance.
- **Safe Operation**: Operators must possess professional electrical knowledge and operation skills and operate strictly in accordance with the operation procedures to avoid safety accidents caused by misoperation. When carrying out equipment inspection and maintenance, the power supply must be cut off first, and corresponding safety measures must be taken, such as hanging ground wires and setting warning signs.
- **Environmental Requirements**: The high-voltage grid-connected cabinet should be installed in a dry, ventilated, and clean environment to avoid being affected by factors such as humidity, dust, and corrosive gases. Meanwhile, it is necessary to ensure that the installation position of the equipment meets the requirements of the safety distance and is convenient for operation and maintenance. #IngenieríaEléctrica #DiseñoDeTransformadores #DiseñoDeInductores #TecnologíaDeTransformadores #IngenieríaEléctrica