1. No category

Why kicking Colombia out of the world
cup could help keep the lights on in Rio
“Easy energy efficiency gains through
super low loss amorphous technology”
Erika Wilson, Managing Director, Wilson Power Solutions
Agenda
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Brief intro Wilson Power Solutions
Why do transformer losses matter?
How can we mitigate losses?
Amorphous core technology
Additional savings through VO
The proof is in the pudding - Case studies
Q&A
How did you get to the venue today?
A)
B)
C)
D)
E)
I walked
By train
Took the car
I flew in by helicopter
Other
5
2
1
1
0
A
B
C
D
E
Wilson Power Solutions
• Leaders in energy efficient power distribution
• 67 years of power engineering, family run and
managed in 3rd generation
• Pioneers in super low loss amorphous technology
How much energy is wasted through
transformer losses worldwide?
7
A)
B)
C)
D)
E)
0.5%
0.75%
1%
2%
>2.5%
2
1
0
0
A
B
C
D
E
Transformer losses worldwide
3%
“energy generated
wasted through
transformer losses”
Transformer losses Europe
• 4.6 million distribution transformers (EU)
• Losses exceed 38 TWh /year
• = Annual energy consumption Columbia
• = 30 million tonnes CO2
Transformer losses
Two types of losses:
•No load losses = Core (iron)
losses
•Load losses = Copper (winding)
losses
Our solution- The Wilson e2
• Creating UK’s first super low loss
amorphous transformer
– Amorphous metal core
– Low current density conductors
• Reduced core losses by 75%
• Reduced combined losses by 50%
What does “amorphous” mean?
A)
B)
C)
D)
E)
Flexible
Shapeless
Hollow
Resilient
Madly in love
5
3
2
2
0
A
B
C
D
E
Amorphous core technology
ámorphos: origin Greek; shapeless
• Random atomic structure
• Lower hysteresis losses
• Lower eddy current losses
• Less friction when magnetic field applied
CRGO core
• Lower operating temperature
• Transformer technology since mid 70’s
Amorphous core
Amorphous metal core manufacture
PRESPOOLING
CUTTING
STACKING
V
CORE LACING
CORE FORMING
ANNEALING
EDGE FINISHING
Amorphous metal core and coil assembly
Amorphous Core
HV tap leads
Core Coil Assembly
In tank assembly
How much will a 1MVA Wilson e2 typically
save through reduced losses per year?
8
A)
B)
C)
D)
E)
3,000kWh - £270
13,000kWh - £1170
23,000kWh - £2070
33,000kWh - £2970
43,000kWh - £3870
3
2
1
A
4
B
C
D
E
Transformer loss comparison
Size
1000kVA
Standard loss (CRGO)
Super low loss amorphous
(AMT) –e2
Core
Losses
[W]
Load
losses
[W]
Total
Watts
Core losses
[W]
Load losses
[W]
Total
Watts
1,350
12,500
13,850
500
6,530
7,030
Watts
saved*
6,820
kWh
saved*
33,072
£’s
saved*
£2,976
*annual savings based on 70% load and electricity costs of £0,09/kWh
Savings through transformer losses
• Typically save 33,000kWh =£3000 /pa**
• Lifetime savings: £75,000 (25yrs)
• Mitigating ~ 17.5t CO2 /pa*
*Carbon factor: 1kWh = 0.537 kg/CO2
** Cost at terminals: 1kWh = £0.09
Two areas for energy savings
• Guaranteed
savings through
reduced
transformer losses
– Core losses
reduced up to 75%
– Combined losses
cut in half
– Typical 1MVA
saves £3000 pa
• Potential savings through
voltage management /VO
–
–
–
–
Extended tapping range
No additional costs
2in1 solution
Typical electricity savings
5-8%
Savings through Voltage Management
• 2in1 solution
• Extended tapping range
• No additional system losses
• Available with OLTC
• 3 - 12% electricity savings
Wilson e2 PLUS with OLTC – On Load Tap Changer
• Allows constant output voltage –215 volts to 254 volts
• 17 positions in 1% steps
• Fully automatic AVR relay
• Maximising savings- improved
savings up to 2%
• Safety & Security of supply
Do you think that Voltage Optimisation/Management
actually saves energy?
A)
B)
C)
D)
Yes- for some applications
No
Don’t know
Maybe – I need more
detail
10
5
4
0
A
B
C
D
Customer Installations
• Example installations
– TX in series with VO equipment (ASDA)
– TX retrofit (NHS)
– TX new build (TESCO)
• Example customer energy savings
Wilson e2 in series with Voltage
Optimisation (VO) equipment
•
Wilson e2 in series with VO equipment
•
VO set to reduce Voltage to ~223V
•
Wilson e2 on nominal tap setting
Wilson e2 in series with VO equipment
Bypass
• VO equipment removed from circuit
• Wilson e2 tapped down to deliver ~223V
• Load & power consumption measured
RESULT: Further 3% reduction in kWh consumption
Wilson e2 transformer retrofit
•5.8% voltage reduction
•Reduced transformer losses
• Overall 6.5% reduction in energy consumption
•Payback on capital investment = 18 months
Wilson e2 transformer - New build
•Specify Wilson e2 (based on loss values)
•No dedicated VO equipment in new stores
“The Wilson e2 saves Tesco 9 million kWh per year”
TESCO Technical Standards Manager
Over 400 client installations
•
Leading hotel chain: 12% reduction in kWh
•
Major retailer: 7.1% reduction in kWh
•
Paper manufacturer: 3.5% reduction in kWh
•
Food supplier: 11% reduction kWh /t product
•
Major tourist attraction: 5.8% reduction in kWh
•
Leading snacks producer: 9% reduction in kWh
Would you choose amorphous
transformers for your sites?
A) Would never consider
B) Might consider but need
more info
C) Will likely consider
D) Will definitely consider
4
3
3
0
A
B
C
D
Any Questions?
Q&A