17th updea congress yasmine hammamet - tunisia development of electricity grid interconnections...
TRANSCRIPT
17th UPDEA Congress
Yasmine Hammamet - TUNISIA
Development of Electricity Grid Interconnections
Strengths, Assessments of Exchanges and Prospects for Côte d’Ivoire --------------------
VANIE BI TIECOURA – KOUASSI LEON PAUL - SOPIE
2
Location of RCI
3
Map of Côte d’Ivoire (19 regions)
4
Institutional Framework for the Power Sector
LEGISLATION ON THE POWER SECTOR
* Law n° 85 – 583 of 29 July 1985;
Under Article I of Law n° 85-583 of 29 July 1985, the
transmission and distribution of electricity across Côte d’Ivoire,
as well as the import and export are a State monopoly.
Power generation, however, is not a State monopoly, factor
allowing the introduction of IPPs.
5
Institutional Framework for the Electricity Sector
STATE PLAYERS
* General Energy Directorate - DGE
* National Regulator of the Electricity Sector - ANARE* Managing Company for the Electricity Sector Assets - SOGEPE* Ivorian Electricity Operation Company - SOPIE
PRIVATE OPERATORS* Ivorian Electricity Company - CIE* Ivorian Company for Electricity Generation – CIPREL (321 MW)* AZITO – Energie (296 MW)* Aggreko (70 MW on lease)*Natural gas producers: Foxtrot, Afren, CNR
6
Institutional Set-up
7
Key Figures for 2009
Hydropower plants : 604 MW
Thermal plants : 787 MW
TOTAL INSTALLED CAPACITY : 1 391 MW
225-kV line : 1 668 km
90-kV line : 2 528 km
High voltage stations : 44
Gross production 2009 : 5797 GWh
Peak power : 857 MW
8
Côte d’Ivoire’s Assets and Potentials
GENERATION PARK
* Hydropower plantsThe installed capacity of the hydropower generation fleet is of 604 MW, breaking down as follows: i- Ayamé1 (20 MW), ii- Ayamé2 (30 MW), iii- Kossou (174 MW), iv- Taabo (210 MW), v) Buyo (165 MW), and vi- Fayé (5 MW).
* Thermal plants The installed capacity of the thermal generation fleet is of 787 MW, breaking down as follows : i- Vridi (100 MW), ii- Ciprel (321 MW), iii-Azito (296 MW), and iv- Aggreko (70 MW, on lease).
9
Côte d’Ivoire’s Assets and Potentials
ELECTRICITY GRID
The Ivorian electricity grid is comprised of lines of transmission, interconnection and distribution as well as transformer stations:
* HV Network
i- 225-kV line (1 668 km), ii- 225-kV interconnection line (218 km), iii- 90-kV line (2 528 km).
* MV Network iv- MV network (18 573 km), v- LV network (15 446 km), vi- HV/MV substations (44), vii- MV/MV substations (58), viii- MV/LV substations (8002).
10
Ivorian Electrical Grid
LIBERIA
GUINEEHydroélectriques
Vers VRA
FERKESSEDOUGOU
BOUAKE 2
KOSSOU
TAABO
LABOA
MAN
BUYO
SOUBRE
SAN-PEDRO
AGBOVILLE
ODIENNEBOUNDIALI KORHOGO
SEGUELA
DANANE
MARABADIASSASEREBOU
BONDOUKOU
DIMBOKRO
ATTAKRO
FAYE
DALOA
ZUENOULAAGNIBILEKRO
ABENGOUROU
AYAME1&2DIVO
GD-BASSAM
DABOU
GAGNOA
ABIDJAN
GHANA
MALI
BURKINA FASO
PRESTEA
165 MW
5 MW
174 MW
210 MW
20+30 MW
TAC 86 MW VridiTAC 321 MW ( CIPREL Vridi)TAC 296 MW ( AZITO )
ABOBO
VRIDI
YOPOUGON2
PlateauRIVIERA
Treichville
Bia-sud
Bia-nord
RESEAU ABIDJAN
Poste existant
LEGENDE
Thermique
225 kV 90 kV
Poste en projet
Ligne existante
Ligne en projet
CENTRALES
RESEAU ELECTRIQUE DE LA COTE D’IVOIRE
YAMOUSSOKRO
AZITO
ZAGNE
Anani
Yopougon1
Vers Agboville
Vers Bongo
ABROBAKRO
BONGO
Djibi
Vers Dabou
Vers Gd Bassam
Vers Taabo
ABATTA
TONGON
BOUAKE 1
Sir
HIRE
Vers Anoumabo
330 kV
Hydroélectrique
Existante En projet
TAV 150 à 200 MW (AZITO)TACC 100 à 150 MW TACC 450 MW
270 MW
TAV 150 à 200 MW (AZITO)TACC 100 à 150 MW TACC 450 MW TACC 120 MW
11
Côte d’Ivoire’s Assets and Potentials
HYDROPOWER GENERATION POTENTIAL
All the water bodies of Côte d’Ivoire were assessed to determine/ascertain the country’s hydropower generation potential. Thus, a summary preliminary study (SPS) was conducted on all the sites that could be equipped. It emerges from these studies that the theoretical hydropower generation of Côte d’Ivoire is estimated at 46 000 GWh.
The table below shows the list of sites that can be equipped.
12
Hydropower Generation Sites SurveyedHydrpower generation sites assessed
SITES Water body Power(MW) Producible (GWh)
SOUBRE SASSANDRA 328 1 600
N'DIELIESSO COMOE 100 835
MALASSO COMOE 90 605
LOUGA SASSANDRA 280 1 330
SINGROBO BANDAMA 67 315
KOKUMBO BANDAMA 78 350
BOULOUMERE SASSANDRA 156 785
DABOITIER SASSANDRA 91 375
GRIBOPOPOLI SASSANDRA 112 515
TIASSALE BANDAMA 51 215
TAHIBLI CAVALLY 20 100
TAYABOUI SASSANDRA 100 515
KOUROUKORO SASSANDRA 32 215
BROU ATAKRO BANDAMA 90 410
GAO SASSANDRA 74 475
DROU SASSANDRA 16 11
TIBOTO CAVALLY 220 1 500
TOTAL 1 905 10 151
13
Assessment of Interconnections
Côte d’Ivoire – Ghana Interconnection
In 1983-1993Côte d’Ivoire used to import power. Its imports decreased from 310 GWh in 1984 to 59 GWh in 1993, that is a regular trend towards self-reliance in the field of energy.
In 1994-2010Côte d’Ivoire was a net exporter of power to Ghana. Its exports grew from 14 GWh in 1994 to 105 GWh in 2009, reaching a peak of 1219 GWh in 2002.Between 1984-2009, a total of 7 502 GWh of electrical power was exchanged between both countries.
14
Assessment of Interconnections.
-1 400,0-1 200,0-1 000,0
-800,0-600,0-400,0-200,0
0,0200,0400,0600,0
1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008
Côte d'Ivoire - Ghana Interconnection (GWh)
15
Assessment of Interconnections
Côte d’Ivoire – Togo/Benin Interconnection
Côte d’Ivoire was a net exporter of power to the CEB (Benin Electric Community) by 1955. The export of power transits through Ghana, via the interconnection grid. The electrical energy exports to the CEB increased from 172 GWh in 1995 to 154 GWh in 2009, experiencing a peak of 577 GWh in 2001. In 1998, no power was exported to the CEB.
In 1995-2009, the CEB was supplied a total of 3 854 GWh of electrical power.
16
Assessment of Interconnections.
-700,0
-600,0
-500,0
-400,0
-300,0
-200,0
-100,0
0,0
Benin-Togo Interconnection (GWh)
17
Assessment of Interconnections
Côte d’Ivoire – Burkina Faso Interconnection
Côte d’Ivoire was a net power exporter to Burkina Faso by 2001. The exports of electrical power grew from 66 GWh in 2001 to 129 GWh in 2009, recording a peak of 135 GWh in 2006.
In 2001-2009, Côte d’Ivoire supplied a total of 975 GWh of electrical power to Burkina Faso.
18
Assessment of Interconnections.
-160,0
-140,0
-120,0
-100,0
-80,0
-60,0
-40,0
-20,0
0,02001 2002 2003 2004 2005 2006 2007 2008 2009
Côte d'Ivoire - Burkina Faso Interconnection (GWh)
19
Lessons Learnt
SELECTIVE POWER CUTSThese projects enable Côte d’Ivoire to cope with two serious power generation deficits
The first case was experienced in 1984 during the exceptional drought which reduced the hydropower generation potential of the Ivorian grid. The Ivorian electrical system was provided assistance by Ghana via the interconnection network.
The second case occurred in February-May 2010 when a 100-MW thermal power generator broke down at the AZITO power plant. Once again, Côte d’Ivoire was provided assistance by Ghana which supplied 88,8 GWh, that is 46 percent of the overall power shortage.
20
Lessons Learnt
OPERATING MANUAL
The lessons learnt from an experience of over 25 years of practice served as a basis for drafting the Manual of Interconnection Operation enforced by the Western African Power Pool (WAPP).
The Operating Manuel was initially designed for the Zone A interconnected grids and was later on extended to all the Western African Power Pool (WAPP).
It seeks to ensure all the stakeholders of WAPP interconnected electrical grids operate correctly and efficiently the Western Africa interconnected network and take an equitable share in the obligations and advantages arising from the interconnection.
21
Update on New Projects
Interconnection of Côte d’Ivoire – Mali Electrical Grids
Project Description and RationaleThe project of interconnection of the Côte d’Ivoire and Mali’s electrical grids aims to build a high voltage 225-kV electrical line, going from Ferkessédougou (Côte d'Ivoire) to Ségou (Mali) via Sikasso and Koutiala as well as to build transformer substations. The ultimate purpose is to increase the offer and reinforce safe electrical power supply to Mali (+80 MW) while reducing the costs of thermal power supplied (from 86 Fcfa/kW to 45).
22
Update on New Projects
Technical Profile High-voltage line: Ferké-Sikasso-Koutiala-Ségou of 519-km long, 225 kV; Extension of the Ferké and Ségou substations; Construction of a 225/33/15 kV substation in Sikasso and Koutiala; Supply and installation of a 50-MVAr compensator; Institutional Support.
Status of ProgressThe project is underway. The Malian portion has already been completed.
23
Update on New Projects
Interconnection of the CLSG Electrical Grids
Project Description and RationalThe project seeks at ensuring the interconnection of the electrical grids of Côte d’Ivoire, Liberia, Sierra Leone and Guinea from the station in Man. It is in line with the implementation of the West African Power Pool (WAPP) projects aimed at reinforcing the exchanges of electrical power exchange between the countries in the region.
24
Update on New Projects
Technical Profile The project will consist in the construction of a high-voltage transmission line of approximately 1100 km, the construction of ten (10) high-voltage stations including four (4) in Liberia, five (5) in Sierra Leone, one (1) in Guinea and the extension of two (2) high-voltage stations including one in Côte d’Ivoire (station in Man) and the other in Guinea.
Status of ProgressThe feasibility studies have been completed. The Consultant was mandated to draft a detailed design. The Western African Power Pool (WAPP) is currently seeking funding.
25
Update on New Projects
Upgrading the Côte d’Ivoire – Ghana Interconnection into a 330-kV line
Project Description and RationaleIn the context of the Western Africa Electrical Energy Exchange System (WAEEES), the construction of interconnection line between Benin and Nigeria will help connect all the countries in the ECOWAS Zone A. The interconnection of Nigeria to the group of countries already connected, that is Côte d’Ivoire, Ghana, Togo and Benin is going to generate significant power transits between Côte d’Ivoire and Nigeria via Ghana, Togo and Benin. To cope with foreseeable high levels of transit, one should reinforce transit capacity between Côte d’Ivoire and Ghana with the construction of the second 330-kV interconnection line.
26
Update on New Projects
Technical Profile The project involves the provision and deployment of equipment for:
The 330-kV line RIVIERA – PRESTEA of about 220 km, with 146 km in Côte d’Ivoire;
Establishment of a 330-kV node at the Riviera station; Installation of two (2) 330/225-kV transformers at the RIVIERA station; Extension of the 330-kV PRESTEA substation with the creation of 330-
kV spans; Installation of the related tele-transmission and metering equipment.
Status of ProgressFunded by the EIB through a grant to the WAPP, the studies are underway and shall lead to fund seeking for the execution of works.
27
Conclusion
Interconnections did play a significant role of integrative factor. Indeed, in 1984-2009, over 12 000 GWh were exchanged with Ghana, le Burkina Faso, le Togo and Benin.These projects also enabled Côte d’Ivoire to cope with two cases of serious power generation deficits. The first occurred in 1983 during the exceptional drought which reduced the hydropower potential of the Ivorian electrical system while the second one occurred in 2009 when the 100-MW generator of the AZITO thermal plant broke down.Lessons learnt from over 25 years of practice served as a basis for drafting the Operating Manual of interconnections enforced by the Western African Power Pool (WAPP).The projects underway (Côte d’Ivoire – Mali and Côte d’Ivoire – Liberia - Sierra Leone – Guinea) will undoubtedly reinforce the development of interconnected grids in Africa.
28
THANK YOU FOR YOUR ATTENTION