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Agenda
2
Meet Wilson Power Solutions
Why transformer losses matter: Energy savings outside the “box”
The Eco Design Directive for transformers
Super low loss amorphous transformers
Case studies & testimonials
1
2
3
4
5
Your questions answered 6
Wilson Power Solutions
• 70yrs old family run SME in 3rd generation
• Transformer & switchgear suppliers to industry
• Pioneers of super low loss amorphous technology (Wilson e2)
3
2.9%
Energy generated wasted through transformer losses*
Transformers are silent energy guzzlers
5 *EU27 (2008) losses amounted to 93.4 TWh
Transformer losses
No load losses (“core
losses”)
Permanent 24/7 from being
energised
Load losses (“winding losses”)
Product of load current
7
EU Eco Design Directive Transformers
Tougher design specifications for transformer losses • Tier 1: Effective since 1st
July 2015
• Tier 2: Effective from 1st July 2021
8
Applies to transformers “placed into the market or put into service” anywhere within the European Union.
EU Eco Design Directive Transformers
9
“National Regulating Authorities are strongly advising…..” …to allow for the installation of more efficient transformers than the regulation requires whenever these are economically justified on a whole life cycle basis…”
Our solution since 2009 - The Wilson e2 UK’s first super low loss amorphous transformer
• Amorphous metal core
• Lowest combined transformer losses
• Meeting /exceeding Tier 2 (2021) Eco Design Specifications
10
Eco Design Directive: Transformer loss comparison Size Standard loss (CRGO) pre 2015 Tier 1 – July 2015 Tier 2 – July 2021
Core
Losses [W]
Load
losses
[W]
Total
Watts
Core losses
[W]
Load losses
[W]
Total
Watts
Core
losses [W]
Load
losses [W]
Total
Watts
1000kVA 1,350 12,500 13,850 770 10,500 11,270 693 7600 8,293
%age
change -19% -26%
Products Standard Loss CRGO Txs Wilson e1 Wilson e2 amorphous
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Amorphous core technology
CRGO
Amorphous
ámorphos: origin Greek; shapeless
• Random atomic structure
• Lower hysteresis losses
• Lower eddy current losses
12
Fancy adding £35,000 to your estates bottom line?
14
1x infrastructure
decision
= 25 years of Energy Savings
Savings through TX losses: OLD energy guzzling 1970’s unit hidden on site? 33400kWh = £3170/pa**
Mitigating ~ 18t CO2 /pa*
Could be significantly more if
older *Carbon factor: 1kWh = 0.537 kg/CO2
** Cost at terminals: 1kWh = £0.095
Based on 1000kVA liquid filled transformer with 70% load
16
Guaranteed savings from reduced transformer losses
Two areas for energy savings
Potential savings through voltage management /VO
17
1.
2.
• Constant output
voltage
• Buck & Boost
• 17 positions in 1%
steps
• Fully automatic AVR
relay
• Safety & Security of
supply
Wilson e2+with OLTC – On Load Tap Changer
19
• 6.4% voltage reduction
• Reduced transformer losses
6% electricity reduction
“Install & forget solution”
Annual savings: £31k
Wilson e2 transformer replacement – UHSM
20
For more details contact Mark Foden at UHSM
1x 2MVA transformer (Sub 1 T2)
• 7.5% voltage reduction
• Reduced transformer losses
2.6% electricity reduction
Savings: 272,949kWh
~£22,000 pa* *(0.08p /kWh)
Wilson e2 transformer replacement - McCain
21
Wilson e2 transformer replacement – University of Warwick
22
“It appealed to us to select the product with the best energy efficiency onto our estate, further given the availability of 2021 compliant transformers for what was in effect only a modest increase in capital cost over that of a 2015 compliant version, it was in reality a “no brainer” to select the e2 for two recently completed substation upgrade projects”
Electrical Design Engineer, The University of Warwick