Telecom Power System Solution
I. Solution Background
In modern communication networks, stable power supply is crucial for communication equipment like base stations and data centers. Power failures can disrupt communication, harm user experience, and cause economic losses. This solution aims to offer a reliable, efficient power supply for diverse communication scenarios.
II. System Objectives
Ensure continuous power for communication devices under all conditions to keep networks running.
Boost power system efficiency and cut energy use for energy savings.
Implement real - time monitoring, promptly address faults, and enhance maintenance efficiency.
Enable easy expansion as communication services grow.
III. System Composition
AC Power Distribution Unit
Input Power Distribution Cabinet: Connects and distributes mains power. It has multiple switches for redundant backup and overvoltage, undervoltage, overcurrent, and leakage protection.
AC Distribution Panel: Further distributes AC power to various devices, with configurable output circuits.
Rectification Unit
Rectifier: Changes AC to DC for communication gear and battery charging. High - efficiency, modular rectifiers with good conversion, low harmonics, and current sharing are preferred. They also have over - temperature, over - voltage, and over - current protection.
DC Power Distribution Unit
DC Power Distribution Cabinet: Manages and distributes rectifier - output DC power. It has multiple output switches and fuses for circuit protection.
Load Shedding Module: When mains power fails and battery capacity drops, it cuts non - critical loads to extend battery life for critical equipment.
Battery Bank
Lead - acid or Lithium Batteries: Backup power during outages. Lead - acid batteries are cheap and tech - mature; lithium ones have high energy density, small size, and long life. Select based on scenario and budget, and determine capacity by load power and outage time.
Battery Management System (BMS): Monitors battery parameters like voltage, current, temperature, and remaining capacity. It ensures balanced charging and discharging, preventing over - charging, over - discharging, and over - heating.
Monitoring Unit
Monitoring Module: Collects power system data (AC/DC voltages, currents, battery params) and sends it to the monitoring center via RS485, RS232, or Ethernet.
Monitoring Software: Receives and shows data on a computer. It can display system status, set alarms, and has remote control for some equipment.
IV. System Working Principle
Normal Mains Power: Mains power enters via the input cabinet, is distributed. Part powers AC - needing devices, and part goes to the rectifier. The rectifier provides DC for communication equipment and charges the battery. The monitoring unit tracks system status.
Mains Power Failure: The system switches to battery power. The battery powers communication devices, and the monitoring unit watches battery capacity. When low, the load shedding module cuts non - critical loads.
Mains Power Restoration: The rectifier restarts, supplies power, and re - charges the battery. The load shedding module restores non - critical loads, and the system returns to normal operation.
V. Equipment Selection Suggestions
AC Power Distribution Equipment: Choose well - known brands. Size rated current by system load, with a margin. The input cabinet should have full protection and redundancy, and the distribution panel should fit equipment access needs.
Rectifier: Prioritize high - efficiency, modular types. Determine number and power based on load and expansion plans. Output should meet equipment requirements with good current sharing.
Battery Bank: Pick lead - acid for tight budgets and less space concern; lithium for high energy density, long life. Ensure compatibility with BMS and calculate capacity carefully.
Monitoring Unit: The module should have reliable comms and strong data handling. The software should be user - friendly, integrate with existing platforms, and have rich alarm and analysis features.
VI. System Installation and Commissioning
Pre - installation: Survey the site for space, ventilation, and stability. Prepare tools and materials, and inspect equipment for completeness and damage.
Installation: Install components in order. Ensure proper placement, safe cable laying, good grounding, and correct connections.
Commissioning: Check wiring and settings. Test AC/DC power, battery performance, and the monitoring unit to ensure normal operation.
VII. System Maintenance and Management
Daily Inspection: Check equipment appearance, connections, cables, indicator lights, and room conditions.
Data Monitoring and Analysis: Monitor data via software and analyze trends to spot potential faults.
Equipment Maintenance: Clean equipment, check fans, and maintain batteries. Replace worn parts.
Emergency Plans: Develop and drill emergency plans for power outages and equipment failures to safeguard communication network operation.
VIII. Summary
This solution ensures reliable power for communication equipment through proper system design, equipment choice, installation, and maintenance. It can be adjusted for different scenarios, meeting communication business growth and ensuring network stability.