Data Center Power Chain Designs:
Maximizing Uptime while minimizing
Total Cost of Ownership (TCO)
Jorge Aguinaga
Sr. Product Line Manager, Power Quality - CPSD
Electrical Sector - APAC – Eaton Corporation
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Datacentres:
• Mission critical applications
• Fast growing, dynamic and
competitive industry
• Economic and environmental
pressure
• New technologies needed to
support continuous
Scalability
Resiliency
Efficiency
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Safety
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Maximize Uptime and Reduce TCO:
Current issues
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Maximize Uptime and Reduce TCO:
Current issues
Efficiency
• Cost pressure
• Environmental oversight
Scalability
• Need to optimize capital expenditure
• Need to react fast to customer needs
Resiliency
• It’s all about availability ....Service Level Agreements
• Hardware & software...convergence
Safety
• Enhanced safety for operators & technicians
• Product standards constantly evolving
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Data Center Power Chain Design:
Maximize uptime and minimize TCO
Efficiency:
How to maximize availability and reduce
operational costs…
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A typical power chain configuration
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Another typical power chain configuration
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Typical configurations render inadequate hardware
utilization rates...
•
N+1, N+N, 2(N+1) UPS systems for maximimum resiliency
•
Higher redundancy results in lower load levels and lower efficiencies
•
Day one and actual final load levels often are far away from design load
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Optimizing hardware utilization rates is key
to reduce your operational costs
•
Load optimized double conversion efficiency
System automatically suspends and engages modules
•
Available at both UPS and system level / automatic module rotation
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Advanced algorithms maximize the utilization rate
•
•
•
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Technology that monitors the grid and automatically selects the optimal
power protection option
Continuous monitoring of UPS output voltage
Inherent filtering against fast low energy transients
Lifetime of UPMs components will increase use
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A paradigm shift is starting...although lots of paranoia..
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The real efficiency curve..
Energy is #1 expense for a datacentre
Typical
load
level of a
UPS
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The real cost of inefficient power chain designs...
Cost of losses: >10 k€ for every % of MW per year*
*Based on EU-27 electricity price for industrial
consumer, Eurostat 2012
Typical
load
level of a
UPS
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Data Center Power Chain Design:
Maximize uptime and minimize TCO
Scalability:
How to maximize availability and reduce
operational costs…
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Scalable systems optimize CAPEX but...
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Scalability increases complexity
Proper load sharing
methods are must for
a resilient, scalable
and modular parallel
operating UPS system
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Key considerations for a resilient and scalable
design...maximize your uptime
• A single shorted bypass SCR can paralyse
whole system
• Likelyhood increases with higher number
of static switches
• Backfeed protection with a
shorted SCR detection
• IEC62040-1:2008
Amendment 1:2013
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Selectivity is a critical issue in resilient power chain
designs
Distributed Bypass:
Centralised Bypass:
• Reduced bypass capacity day one
• Full bypass capacity on day one
• Proper selectivity difficult to achieve
• Less components
• Easy solution
• No redundancy
• Higher capex
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Improving selectivity and lowering CAPEX..
Distributed Bypass with scalable UPS:
• Best of both worlds
• Full bypass capacity on day one
• Power modules added as load grows
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Ease of expansion
• Prepare for future expansion
• Adding modules into UPS’s
vs. adding UPS modules into
system
• Improved Opportunity-ToCash
• Minimised downtime or even
concurrently expandable
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Maximize uptime and minimize TCO
Insider tips:
How to maximize availability and
reduce operational costs…
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Should a UPS trip when ambient is above 35°C?
Or keep going as long as possible?
Max operation
point
• Design for full load operation at
max ambient temperature
• Less heat generated at partial
load levels
40°
C
• Switch to high-efficiency mode
• Design for
Maximu
Normal
m
ambient ambient
Abnorma
l
ambient
• Avoid ”conditions apply” designs
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Did you know that….
Easy Capacity Test
•
Provides savings in annual battery
autonomy tests
DC
AC
DC
•
Reduces amount of work and need for
rental equpiment
AC
DC
DC
DC
AC
•
•
Power discharged from the batteries
is fed to other loads in parallel UPS
system through static switch
DC
AC
DC
DC
No need to transfer the load to other
systems
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On-site testing – Case Study
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Data Center Power Chain Design:
Maximize uptime and minimize TCO
Closing thoughts…
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No more compromises…
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Closing thoughts
• Economics, customer requirements and environmental
regulations putting are severe pressure on datacentre
designs
• Scalable, redundant and resilient designs can be achieved
while minimising operational costs and environmental
footprint with new technologies
• Design and component selection must be meticulously
thought out for maximised availability - UPS’s are the heart
of the electrical infrastructure that keeps the system going
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Thank you
JorgeAguinaga@eaton.com
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