Communications industry

Detail intruduction

     I. Overview of the current situation of the industry

    With the rapid development of telecommunications technology, the structure of telecommunications networks is becoming more and more complex. As the power component of communication systems, the heart of communication systems, the importance of communication power sources is increasingly manifested. Traditional communication power sources are far from meeting the technical requirements of the ever-changing telecommunications network, both in terms of power supply methods and technical performance indicators of power supply equipment. From the perspective of the importance of electricity, power supply is an indispensable part of the communication network. The quality of its power supply is directly related to the smooth flow of the entire telecommunications network. It is the power source of the entire telecommunications network, and some people visually compare the power to the "heart" of the communication network.The basic requirements of the communication network for power are: reliable, stable, high efficiency, and small in size.

     Second, customer load characteristics description

     In view of the vast majority of IT equipment in communication network rooms, such as servers, routers, switches, optical transceivers, gateways, disk array machines, and communication devices, the instantaneous power interruption time allowed is only about 0.01-0.02 seconds. This means: For critical communication load systems, if there is a 00 second or more "instantaneous power interruption" failure during operation, a "network failure" will occur. Once the network is down, it takes tens of minutes -- a few hours -- to get the entire network back to normal. Obviously, this will bring huge economic losses to users. For these reasons, we must consider eliminating the "single point bottleneck" failure that may occur in the UPS output power system to ensure continuity of power to these critical IT load devices.


     Third, the solution
     1. IDC machine room UPS power system power distribution scheme
    Centralized power supply mode:
     2, base station UPS power supply solution
(1) DC power supply
Macro base station: It is powered by an indoor 48V rectified power supply/outdoor type integrated communication power supply system.
(2) Indoor coverage centralized power supply scheme
DC remote: RRU is within 100 meters from the equipment room, using outdoor integrated communication power system
(3) Centralized/outdoor coverage centralized power supply scheme (4) Indoor coverage and distributed power supply
Independent power supply: outdoor integrated UPS power supply, DC UPS power supply (AC/DC hybrid power supply mode), outdoor 48V DC power supply
(5) Outdoor coverage independent power supply
The RRU is more than 1500 meters away from the equipment room. The BBU is connected to the local power supply independently. The RRU adopts an independent power supply mode: an outdoor integrated UPS power supply, a DC UPS power supply (AC/DC composite power supply mode), and an outdoor 48V DC power supply.
AC remote: Applicable to RRU within 1500 meters from the equipment room, using inverter power supply mode (inverting the 48V power supply of the equipment room to 220V AC to achieve stable power supply), compared with DC pull, the biggest advantage of this mode is to reduce the power supply. Transmission loss.