Diavik Wind Farm - sencanada.ca · Diavik Wind Farm Chris Bertoli ... •Enercon SCADA – Delta V control system integration is the first time Enercon has allowed data transfer outside

21 April, 2015

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Diavik Wind Farm

Chris Bertoli

Superintendent Electrical & Instrumentation

©2013, Rio Tinto, All Rights Reserved

2

The Diavik Joint Venture

40% Owner

60% Owner and

operator


• Construction 2000-2002 and production

in 2003

• Fully underground mine

• Mining three kimberlite pipes

• Fourth kimberlite pipe is currently being

developed

− US $350 million project

− 2018 production

• Average workforce: 945

• Formal agreements with five Aboriginal

groups

3

Diavik Diamond Mine at a glance


• Located on an island in Lac de Gras

• 300km north-east of Yellowknife

• 100km north of the Tree Line

• 350km south of Arctic Ocean

• Accessible by seasonal winter road two

months of the year

4

Diavik Diamond Mine at a glance


• Transmission project – Capex was ROI

prohibitive

• Solar – NPV negative with low penetration

• Geothermal – low temperature differentials

• Wind – largest penetration and NPV positive

• Diesel will continue to account for the

majority of Diavik’s energy

5

Energy options


• On-site storage capacity for 80 million

litres of diesel fuel

• Ice road only open for eight weeks of year

• Risks – climate change, fuel price

• Arctic temperatures: minus 30 degrees

Celsius

• Power security critical safety priority

6

Conditions and energy scenario


• Four E-70 Enercon 2.3 megawatt turbines

• Will reduce diesel consumption by 10%

• Will reduce carbon footprint by 6% (12,000

tonnes CO2 equivalent offset)

• Blade de-icing system

• Projected to provide 17 gigawatt hours of

renewable energy per year

• Reliability – direct drive, gearless

generator

• Canada’s most northern wind farm

• Award winning project

7

Conditions and energy scenario


• Wind-following: operator buy-in was

positive

• Wind forecasting

• Direct overhead line connection to grid

• Enercon SCADA – Delta V control system

integration is the first time Enercon has

allowed data transfer outside their

proprietary controls system

8

Start-up: Winter 2012-2013


9

2013 year one energy production

2013 Forecast WF generation

Months

Kw

hr


• One of the coldest winters in the last 30

years

• Blade heating was supplied incorrectly

• Anemometer failures causing shutdown of

towers

• Electronic failures on inverters

• Support from Enercon without SCADA

connection was difficult

10

2013 first winter production


• Installed 600 volt heaters in turbine for

electronics and troubleshooting

• Placed portable diesel generators outside

to provide power to heaters

• Replaced electronics (anemometers and

inverters)

• Support from Enercon without SCADA

connection was difficult

11

2013 mitigation for wind farm


• Enercon replaced all blade heating

components (cable, heaters and breakers)

• Lubricants replaced for cold weather

operation

• New programing for turbines from

Germany was installed

• Enercon SCADA – Delta V control was

connected and support was improved

12

2013 wind farm alterations


• Projected to produce 17 gigawatt hours for 2013 and 2014 and have an average

penetration of 10%

• Finished 2013 with 15.9 gigawatt hours and an average penetration of 9.2%.

• Finished 2014 with 19.9 gigawatt hours;17% above forecast and an average penetration

ratio of 10.5%

13

2013 and 2014 review


• Demonstrate wind power as a viable

option for the North

• Provide support for future wind initiatives

and develop northern capacity

• Donated weather tower to Det’on Cho

Earth Energy Giant Mine wind study

• Developing local expertise and northern

contractors

• Diavik will share knowledge with

communities and government

14

Benefits beyond Diavik


Thank you 15

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Diavik Wind Farm - sencanada.ca · Diavik Wind Farm Chris Bertoli ... •Enercon SCADA – Delta V control system integration is the first time Enercon has allowed data transfer outside