cost of energy assignment - 2014

8/10/2019 Cost of Energy Assignment - 2014

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Cost of Energy Assignment

Dr Alasdair McDonald


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Aims of assignmentTo be able to model the cost of energy for:

A small onshore wind turbineA large offshore wind turbine

To investigate the potential improvements in cost of energy for bothturbines for different turbine innovations:

Rotor innovationsNacelle innovationsSupport innovationsInstallation innovationsOperation and maintenance innovations

To recommend one innovation (per group) to the manufacture.


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TimingsSet groups today. Define roles and so on.

Friday 12 th we will use lecture slot to ask me for advice

Interim presentation, Friday 19 th December ( no marks, but pass/fail )Baseline cost of energy calculationsIdentify the innovations that you will modelShow how you will model the innovations and their impactsShow your project plan

Final Report, early Semester 2 to be agreed 15% of module markEverything! Including modelling results, comparison of yourinnovations and your recommendations.


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Onshore small turbine


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Gaia-Wind 133 turbine,10.7kW13m rotor diameter2 bladed, downwind, stallregulated18m towerFixed speed, gearbox,induction machine

Data sheet is here:http://www.gaia-wind.com/files/9513/1470/8844/Datasheet-GW-UK-1-6-11.pdf

Costs are here:

http://www.naturalenergyuk.co.uk/gaia/

Gaia-Wind 133 wind turbine


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Offshore large turbine


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e.g. Siemens 6MW wind turbine

6MW154m rotor diameter3 bladed, upwind, pitch regulatedvariable speed, direct drive, PM generator

Brochure is here:http://www.ener gy.siemens.com/hq/pool/hq/power-generation/renewables/wind-power/platform%20brochures/D6%20Offshore%20brochure_English_Apr2014_WEB.pdf

Technical specs are here:http://www.ener gy.siemens.com/hq/en/renewable-energy/wind-power/platforms/d6-platform/wind-turbine-swt-6-0-154.htm#content=Description
http://www.energy.siemens.com/hq/pool/hq/power-generation/renewables/wind-power/platform%20brochures/D6%20Offshore%20brochure_English_Apr2014_WEB.pdfhttp://www.energy.siemens.com/hq/pool/hq/power-generation/renewables/wind-power/platform%20brochures/D6%20Offshore%20brochure_English_Apr2014_WEB.pdfhttp://www.energy.siemens.com/hq/pool/hq/power-generation/renewables/wind-power/platform%20brochures/D6%20Offshore%20brochure_English_Apr2014_WEB.pdfhttp://www.energy.siemens.com/hq/pool/hq/power-generation/renewables/wind-power/platform%20brochures/D6%20Offshore%20brochure_English_Apr2014_WEB.pdfhttp://www.energy.siemens.com/hq/pool/hq/power-generation/renewables/wind-power/platform%20brochures/D6%20Offshore%20brochure_English_Apr2014_WEB.pdfhttp://www.energy.siemens.com/hq/en/renewable-energy/wind-power/platforms/d6-platform/wind-turbine-swt-6-0-154.htm#content=Descriptionhttp://www.energy.siemens.com/hq/en/renewable-energy/wind-power/platforms/d6-platform/wind-turbine-swt-6-0-154.htm#content=Descriptionhttp://www.energy.siemens.com/hq/en/renewable-energy/wind-power/platforms/d6-platform/wind-turbine-swt-6-0-154.htm#content=Descriptionhttp://www.energy.siemens.com/hq/en/renewable-energy/wind-power/platforms/d6-platform/wind-turbine-swt-6-0-154.htm#content=Descriptionhttp://www.energy.siemens.com/hq/en/renewable-energy/wind-power/platforms/d6-platform/wind-turbine-swt-6-0-154.htm#content=Descriptionhttp://www.energy.siemens.com/hq/en/renewable-energy/wind-power/platforms/d6-platform/wind-turbine-swt-6-0-154.htm#content=Descriptionhttp://www.energy.siemens.com/hq/pool/hq/power-generation/renewables/wind-power/platform%20brochures/D6%20Offshore%20brochure_English_Apr2014_WEB.pdf


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AssignmentA. Agree between all groups what the baselines are,

e.g. onshore 10.7kW, costs, wind speed distributione.g. offshore 6MW offshore turbine, size of the wind farm, distance to shore,mean wind speed, baseline costs,

B. For the onshore turbine, take a few innovations in your area and model the Cost of Energy.

C. For the offshore turbine, take a few * innovations in your area and reproducethe Cost of Energy identified in the Crown Estate report. You can also identify

and model some other innovation that fits into your scope that has not beenmodelled in the report.

D. Recommend the top innovation (in your scope) which will give the best Costof Energy.

*Few = use your judgement! Some groups will have a lot of innovations to choose from, others not so many


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Same turbine Same wind input

Propose some innovations to the technology

Find a different Cost of Energy

/MWh?

Each group is going to take


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Wind turbine technology groups

1. Rotor Innovations

2. Nacelle Innovations

3. Turbine Support Innovations

4. Turbine Installation Innovations

5. Operations and Maintenance Innovations


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Group 1: Rotor innovations

e.g. aeropdynamics, number of blades, HAWT vs VAWT,blade construction, size, control options, tip speed

EE989 Wind Turbine Technology


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Group 2: Nacelle innovations

e.g. drivetrain, generator, testing, power converters



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Group 3: Support structure innovations

e.g. tower, foundation, jackets, monopole, floating



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Group 4: Wind farm installation innovations

e.g. installation vessel capabilities, float-out-and-sink, cableinstallation



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Group 5: Operation & Maintenance innovations

e.g. condition monitoring, personnel transfer, weatherforecasting, maintenance scheduling



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Cost of Energy Models


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How does the choice ofdrivetrain affect the

turbines cost of energy?


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In order to reduce the cost of offshore wind energy we can target the followingitems through drivetrain design and selection.

Reduce capital costs ( IC C ):Active material costs (copper, magnets)Structural materialManufacturing costsReduce mass of drivetrain

Increase annual energy production ( A EP ):Maximise drivetrain efficiency (at peak and part loads)Maximise drivetrain availability

Reduce failure rateReduce mean time to repair Redundancy

Decrease operation and maintenance costs ( A OE )


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Modelling Annual EnergyProduction


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Start: Mechanical Power Curve

Find and/or calculate: Efficiency curves for your drivetrain

Calculate: Efficiency curves


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Start: Mechanical Power Curve

Find and/or calculate: Efficiency curves for your drivetrain

Calculate: Efficiency curves

Find: Wind turbine availability with your drivetrain0.95

cost of energy assignment - 2014

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