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

1. Brief intro Wilson Power Solutions2. Why do transformer losses matter?3. How can we mitigate losses?4. Amorphous core technology5. Additional savings through VO6. The proof is in the pudding - Case studies7. Q&A

Agenda

A) I walkedB) By trainC) Took the carD) I flew in by helicopterE) Other

How did you get to the venue today?

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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

A) 0.5%B) 0.75%C) 1%D) 2%E) >2.5%

How much energy is wasted through transformer losses worldwide?

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Transformer losses worldwide

“energy generated wasted through

transformer losses”

3%

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%

A) FlexibleB) ShapelessC) HollowD) ResilientE) Madly in love

What does “amorphous” mean?

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Amorphous core technology

CRGO core Amorphous core

ámorphos: origin Greek; shapeless

• Random atomic structure

• Lower hysteresis losses

• Lower eddy current losses

• Less friction when magnetic field applied

• Lower operating temperature

• Transformer technology since mid 70’s

Amorphous metal core manufacture

PRESPOOLING

CUTTING STACKING

EDGE FINISHINGANNEALING

V

CORE FORMING

CORE LACING

Amorphous metal core and coil assembly

Core Coil Assembly

HV tap leads In tank assembly

Amorphous Core

A) 3,000kWh - £270B) 13,000kWh - £1170C) 23,000kWh - £2070D) 33,000kWh - £2970E) 43,000kWh - £3870

How much will a 1MVA Wilson e2 typically save through reduced losses per year?

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Transformer loss comparison

Size Standard loss (CRGO) Super low loss amorphous (AMT) –e2

Watts saved*

kWh saved*

£’s saved*

CoreLosses [W]

Load losses [W]

TotalWatts

Core losses [W]

Load losses [W]

TotalWatts

1000kVA 1,350 12,500 13,850 500 6,530 7,030 6,820 33,072 £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

• Guaranteed savings through reduced transformer losses– Core losses

reduced up to 75%– Combined losses

cut in half– Typical 1MVA

saves £3000 pa

Two areas for energy savings

• 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

• 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

Wilson e2 PLUS with OLTC – On Load Tap Changer

Do you think that Voltage Optimisation/Management actually saves energy?

A) Yes- for some applicationsB) No C) Don’t knowD) Maybe – I need more

detail

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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

• VO equipment removed from circuit

• Wilson e2 tapped down to deliver ~223V

• Load & power consumption measured

RESULT: Further 3% reduction in kWh consumption

Bypass

•5.8% voltage reduction

•Reduced transformer losses

• Overall 6.5% reduction in energy consumption

•Payback on capital investment = 18 months

Wilson e2 transformer retrofit

•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

Wilson e2 transformer - New build

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

A) Would never considerB) Might consider but need

more infoC) Will likely considerD) Will definitely consider

Would you choose amorphous transformers for your sites?

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Any Questions?

Q&A