Frédéric CHEVE

Business developer Africa

VERGNET

France

www.vergnet.com

VERGNET GROUP

• 20 Years of experience in wind and solar

projects grid connected and off grid

• Specialized in renewable projects in remote

areas on an EPC basis.

• Owner patented technology

• Achievement of the first wind project in Nigeria,

grid connected. Katsina wind farm, Katsina state

10MW

Tetiaroa – Polynésie française

FUNDAMENTALS FOR RENEWABLE

PROJECTS DEVELOPMENT : 1st step

• General political will to diversify the energy mix.

• Renewables are a stable source of energy at

constant OPEX prices.

• Identification of the natural resources through a

general masterplan by national entities

• Initiation of the first projects by national entities

• Training of local technical partners, development of

local know how through public/private partnership.

• Development of local fabrications as much as

possible through public incentives.

• Do not use sound effects, they slow down

slide transitions and the noise from projection

computer may distract audience.

FUNDAMENTALS FOR

RENEWABLE PROJECTS

DEVELOPMENT : 2nd step

• Opening of the market for private players : IPPs

for grid connected projects.

• Grid connection facilitation

• Stable legal frame for green IPPs with attractive

feed in tariffs according natural resource.

• Legal securement of PPAs / bank able projects

• Stable legal frame regarding import duties on

necessary imported equipments.

• Stable land law and land permits facilitation

• Do not use sound effects, they slow down

slide transitions and the noise from projection

computer may distract audience.

WIND AND SOLAR

MORE PROJECTS WITH HIGHER

PENETRATION RATIOS WITHOUT

STORAGE

• Wind and solar are fluctuant sources of energy.

• Risks of blackouts are high when overpassing

30% of wind and solar penetration on isolated

grids or weak grids without adapted technology

and know how for grid management.

• Storage costs are still very high despite

technology latest enhancements.

• Maximizing the penetration ratios make projects

more feasible and more cost effective.

Grid

Network analyzer

PV + inverter

Gensets

LOADS Wind turbines + PLC

One or several power analyzers are distributed on the grid

Most of the time, network analyzers are linked with an optical network

Voltage Frequency Current Flickers coef. Harmonics (%) Grid resilience

SCADA

All measured values are transmitted to Hybrid WizardTM

Optical fiber

Power instructions

Power instructions

Hybrid Wizard TM calculates in real-time new power instructions

Nouadhibou / Mauritania : measurement campaign and detailed analyses

Measurement campaign

on the grid

Load flow and steady

state studies

Electro Magnetic

Transient simulations

Short-circuit studies

Harmonics, flicker, etc.

Grid stability must drive the design and the operation of the hybrid system during life cycle

Nouadhibou Capacity factor : with and without safety margins

Capacity factor without safety margins

Capacity factor with safety margins

Max of wind (4,4 MW) and

Test of unforeseen transient events :

• Disconnection of one or several wind turbines

• Disconnection of the whole wind farm

• Starting of power load

• Disconnection of loads

• Disconnection of one diesel group

Risk of blackout

Impossible C = (Pload - Pgenset) / Pwind

Min load for diesel: 800kW (4MW each)

Wind farm maximum (12 m/s) : 4,4 MW

Nouadhibou : Actual average penetration of Renewables since June 2013 (no storage)

Conclusion

• Fundamentals are necessary for renewable

projects development

• Hybrid controlers are necessary to maximize

renewable penetration ratios on average on

weak or isolated grids without any risk of

blackout.

• Business plans are then more attractive for

IPP’s and savings for utilities are increased.

• Costs of storage of energy do not allow to make

large projects economically viable.

Presentation guidelines

• Rather use video clips if sound and recordings

are required for your presentation. Please

discuss this with the organizers so that

arrangements can be made to accommodate

your request.

Presentation guidelines

• Please do not number your slides

• Each slide should have a title

• 9 lines max on a text slide

• Maximum 10 words per line

• Caution: Red, orange or yellow lettering and

lines become unreadable when projected.

Presentation guidelines

• Rather use video clips if sound and recordings

are required for your presentation. Please

discuss this with the organizers so that

arrangements can be made to accommodate

your request.

Presentation guidelines

Use of pictures, graphics, tables, etc. is at the

discretion of the speaker:

• Keep diagrams simple and easy to view

• Make text readable with large font

• Use all space in rectangle

• Make sure your presentation is readable when

printed in black and white

Presentation guidelines

• Branded or company logos are only permitted

on the opening slide.

• Logos (other than that of the event logo) may not

be used throughout the presentation, unless

prior authorization has been obtained from the

organizers.

Presentation guidelines

• Deadline for submission of presentation for

the proceedings: 16 November 2015

• Please ensure that you bring a copy of your

power-point slides with you on a memory stick

the day of your presentation. If you change your

slides please email the organisers asap with the

updated copy.

Presentation guidelines

• For any additional information, please do not

hesitate to contact Natalie Bacon”

Email: natalie.bacon@spintelligent.com

• Phone: +27 21 700 3564

• Spintelligent (Pty) Ltd

Phone: +27 21 700 3500