Electrical Operation Power Supply

The DC system consists of several functional cabinets. Common configurations include: AC/DC rectifier panels (which accept AC or high-voltage DC input and output a stable DC bus; equipped with multiple rectifier modules), battery panels (housing valve-regulated lead-acid or lithium-ion battery banks, equipped with battery management modules), DC distribution panels (featuring DC bus branch circuits, circuit breakers, current sensors, etc.), automatic transfer switch (ATS) panels (enabling switching between dual AC power sources or multiple DC power sources), inverter/UPS panels (converting DC bus power to AC output to supply AC loads or emergency lighting), and modular racks (integrated cabinets pre-assembled with various modules). For example, a comprehensive communication power system may include: input-side multi-channel AC/DC power supply panels, DC feeder panels, battery panels, emergency lighting panels, ATS, and distribution panels. The dimensions and number of modules in each panel can be customized according to application and capacity, supporting centralized monitoring and remote communication.

• The rectifier features a modular design with N+1 redundancy and hot-swappable modules, significantly reducing average maintenance time and enabling easy expansion and online maintenance of the DC power system.
• Ultra-wide input voltage range.
• Enables automatic battery management and protection, with real-time automatic monitoring of battery terminal voltage, charge, and discharge currents, as well as intelligent control of equalization and float charging. Features audible and visual alarms for battery overvoltage, undervoltage, and overcurrent during charging.
• The rectifier modules incorporate advanced electromagnetic compatibility (EMC) design, ensuring compliance with EMC limits for power supply equipment.
• High safety standards, featuring lightning protection and advanced electrical insulation safeguards. The insulation monitoring module continuously monitors ground insulation to ensure system and personal safety.
• Real-time control of dry contact inputs and outputs.
• The monitoring module utilizes an embedded industrial control computer with a large touchscreen LCD display. It provides audible and visual alarms, includes a USB interface, and supports local data export, measurement, and display of AC input parameters.
• Automatic DC bus voltage stabilization with a voltage-drop diode chain.
• Features smooth adjustment of output voltage and current, as well as automatic battery temperature compensation.
• The monitoring module communicates with the host system via an Ethernet interface and the IEC 61850 protocol, meeting the requirements of digital substations. It enables "remote measurement, remote control, remote signaling, and remote adjustment" of the power supply system, as well as unmanned operation and remote maintenance.