Technical requirements for modular UPS power supply in communication data
centers. A powerful and reliable modular UPS power supply system can provide its
server and communication industries with safe shutdown during critical moments
without erasing data. As a data center operator, it is very necessary to equip a
modular UPS power supply. The editor of this article introduces the technical
requirements for modular UPS power supply in communication data centers, as
follows.
The rapid development of communication data center technology and the
endless emergence of new businesses have caused tremendous changes in the
internal and external environment of the communication industry. Modular UPS
power supply, which is the basis of information, is also facing opportunities in
cloud computing, virtualization, big data, cloud storage, etc. The continuous
expansion of data communication networks and the successive establishment of
various business networks have made the transformation of power supply
technology and the improvement of power supply maintenance systems the focus of
attention in the communication industry.
In communication networks, the larger the scale, the higher the level, and
the more critical the business, the higher the requirements for the power supply
quality of the computer room. Therefore, a modular UPS system with high
reliability and high availability must be applied. If a communication network
failure occurs due to power problems, even for just one minute, it will cause
double losses to the operator's economy and corporate reputation.
Technical requirements for modular UPS power supply in communication data
centers:
In order to save operation and maintenance costs and energy consumption
costs in the communications industry and data centers, operators must also
attach great importance to the intelligent control level, maintainability,
energy-saving efficiency and other aspects of the modular UPS power supply.
Currently, in order to fully ensure network quality, my country's three major
operators strictly control the construction of the power level of the computer
room. Especially in the core network, operators generally choose modular UPS
products with better quality and performance provided by more powerful
manufacturers. The four cores of green, energy-saving, efficient and intelligent
have become the requirements for modular UPS power supplies in the new
generation of communication data centers.
(1) UPS is completely modular. Each UPS module is an intelligent
independent entity. Failure of any module will not affect the normal work of
other modules. It can exit the system by itself without affecting the work of
the entire system.
(2) The UPS system must eliminate the common fault points of the system
solution so that the system can run without bottlenecks. For example, advanced
decentralized control technology can be used to deal with the circulation
problem of parallel modules, so that the UPS system is not subject to the
reliability limitations of centralized control and avoids the occurrence of
bottleneck failures.
(3) When multiple modules are connected in parallel, the most important
indicator is current sharing. That is to say, if N UPS modules are connected in
parallel, it must be ensured that the output current of each module is 1/N of
the total output current, at least their mutual The maximum imbalance between
them must be within the required range (generally required to be less than
5%).
(4) All UPS modules in the system share (including charging and
discharging) the battery pack. Use one battery or multiple batteries in parallel
to increase system backup time.
(5) Energy saving and consumption reduction are the biggest problems
encountered by current data centers. In addition to availability, the modular
UPS system that provides power guarantee for data centers must be
high-efficiency, pollution-free, and low energy consumption.
The importance of modular UPS power supply in data centers:
Modular UPS power supply is the power guarantee for many data centers,
ensuring the continuity of power supply and ensuring the safety of the power
supply system. UPS uninterruptible power supply always plays an important safety
guarantee role. The battery is an important part of the modular UPS. The battery
As the final guarantee of power supply, it is undoubtedly the last insurance in
UPS power supply. Its quality is directly related to whether the UPS can work
normally. According to survey statistics, analysis of accidents caused by the
failure of UPS uninterruptible power supplies to supply normal power found that
more than 50% of the accidents were caused by battery failures. Batteries are a
link in which the accident rate of modular UPS power supplies remains high. It
can be seen from this that It is necessary and urgent to improve the safe and
reliable operation of batteries.
Modular UPS power supply method in communication data center:
The working mode of modular UPS power supply can be divided into single
type, parallel type, redundant type and parallel redundant type according to the
requirements of power supply reliability and continuity of electrical equipment;
according to the requirements of power supply reliability and management of
electrical equipment Convenient requirements can also be divided into three
methods: decentralized, centralized, and a combination of decentralized and
centralized.
The equipment used in decentralized UPS power supply has relatively small
capacity and short support time, so it is suitable for some office areas and
control rooms; centralized UPS power supply is suitable for some computer
network rooms that require longer support time and larger size. The power supply
method and capacity of UPS should be determined according to Party A’s needs.
The statistics of the power capacity of the centralized UPS must be closely
coordinated by the designer and the owner, and the conversion efficiency of the
selected UPS product must be taken into consideration. Especially when the power
is large, UPS conversion efficiency is very important. High efficiency can save
initial investment and long-term energy loss.
Under normal circumstances, the computer room is powered by a combination
of mains power and modular UPS backup battery. Under normal circumstances, the
mains power supplies power to the computer equipment after stabilizing the
frequency and voltage of the UPS power supply to ensure the power quality of the
computer equipment; when the mains power fails, the backup battery supplies
power to the computer equipment after inversion through the UPS to ensure the
power supply of the computer equipment. The mains power supply and the UPS
backup battery are switched through an electrostatic transfer switch to ensure
that there is no instantaneous power outage for computer equipment.
The above are the technical requirements for modular UPS power supply in
data centers. Modular UPS can be configured according to current business needs,
and more modules can be added in the future. The system's optimization
capabilities significantly reduce total cost of ownership. This is also the
fundamental reason why modular UPS power supplies are so popular!
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