HV & EHV grids - Project examples
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Togo/Benin - Rehabilitation of the Lomé - Cotonou - Onigbolo Line
In order to improve the supply in electrical energy through the 161 kV line Akossombo - Lomé - Cotonou - Onigbolo and to extend its lifetime, the CEB obtained a credit from the European Investment Bank to carry out the following works:
- strengthening of structures,
- reinforcement of some tower foundations,
- reshaping of the maintenance path,
- replacement of the ground wire cable by an optical ground wire cable,
- replacement of the HV equipment and the line bay control part in the substations connected to these lines,
for which this project provides technical assistance.
intec's services
Phase 1: Support for contract award to Contractors:
- support in the publication of procurement notices in local and international media,
- participation in bid opening and analysis, support to CEB to answer Bidder's requests for clarifications,
- assistance during contract negotiations and award.
Phase 2: Control and supervision of project implementation works:
- supervision, coordination and management of the project,
- technical control of designs,
- supervision of construction works on site ,
- coordination of commissioning and factory acceptance tests.
Client
Communauté Electrique du Benin (CEB)Financing
European Investment BankPeriod of implementation
10.2011 - 06.2016 -
Guinea/Mali - 225 kV Interconnection Guinea - Mali
In order to accelerate the implementation of its priority projects, the West African Power Pool (WAPP), on behalf of EDG and EDM, commissioned this project to prepare the construction of an HV overhead line and associated substations from N'Zékéroré (Guinea) via Fomi (Guinea) to Bamako (Mali). The project includes a feasibility study and the preparation of prequalification and tender documents for the following installations:
- the construction of 714 km of 225 kV line,
- the extension or new construction of six 225 kV substations in Guinea (N'Zérékoré, Fomi, Beyla, Kérouané, Kankan, Siguiri), and
- the construction of a new 225 kV substation in Sanankoroba, some 25 km west of Bamako (Mali).
intec's services
- Feasibility study:
- Technical study of the interconnection, collection and analysis of data, system study / planning of the integration of the new 225 kV line into WAPP's interconnected network (for a time horizon of 20 years of operation), preliminary design (line, substations, communication and SCADA systems), economic and financial analysis;
- Preparation of the prequalification and tender documents and the required split of works into different lots;
- Training programme / human resource development for the concerned electricity companies, energy ministries and for staff of the General Directorate of WAPP through training on the job and in the Consultant's home office.
Client
West African Power Pool (WAPP) / Système d'Echange d'Energie Electrique Ouest Africain (EEEOA)Financing
African Development BankPeriod of implementation
01.2014 - 06.2016 -
Romanie - Tower Testing Station for Electromontaj S.A.
The project consisted in the design and construction supervision of a tower testing station for Electromontaj S.A. in Bucharest. The station can carry out design and sample tests for tubular towers and steel lattice towers, self-supported or anchor type. The testing station is capable to do design tests for giant and multi-circuit towers with 80 m height, 35 x 35 m base, 800 t compression load and 730 t tension load.
intec's services
- Concept of the tower testing station
- Preliminary study
- Analysis of investment costs
- Geotechnical investigations
- Detailed design
- Technical assistance during erection
- Commissioning
Client
S.C. Electromontaj S.A.Financing
S.C. Electromontaj S.A.Period of implementation
03.2013 - 06.2015
Togo/Benin - Rehabilitation of the Lomé - Cotonou - Onigbolo Line
In order to improve the supply in electrical energy through the 161 kV line Akossombo - Lomé - Cotonou - Onigbolo and to extend its lifetime, the CEB obtained a credit from the European Investment Bank to carry out the following works:
- strengthening of structures,
- reinforcement of some tower foundations,
- reshaping of the maintenance path,
- replacement of the ground wire cable by an optical ground wire cable,
- replacement of the HV equipment and the line bay control part in the substations connected to these lines,
for which this project provides technical assistance.
intec's services
Phase 1: Support for contract award to Contractors:
- support in the publication of procurement notices in local and international media,
- participation in bid opening and analysis, support to CEB to answer Bidder's requests for clarifications,
- assistance during contract negotiations and award.
Phase 2: Control and supervision of project implementation works:
- supervision, coordination and management of the project,
- technical control of designs,
- supervision of construction works on site ,
- coordination of commissioning and factory acceptance tests.
Client
Communauté Electrique du Benin (CEB)Financing
European Investment BankPeriod of implementation
10.2011 - 06.2016Guinea/Mali - 225 kV Interconnection Guinea - Mali
In order to accelerate the implementation of its priority projects, the West African Power Pool (WAPP), on behalf of EDG and EDM, commissioned this project to prepare the construction of an HV overhead line and associated substations from N'Zékéroré (Guinea) via Fomi (Guinea) to Bamako (Mali). The project includes a feasibility study and the preparation of prequalification and tender documents for the following installations:
- the construction of 714 km of 225 kV line,
- the extension or new construction of six 225 kV substations in Guinea (N'Zérékoré, Fomi, Beyla, Kérouané, Kankan, Siguiri), and
- the construction of a new 225 kV substation in Sanankoroba, some 25 km west of Bamako (Mali).
intec's services
- Feasibility study:
- Technical study of the interconnection, collection and analysis of data, system study / planning of the integration of the new 225 kV line into WAPP's interconnected network (for a time horizon of 20 years of operation), preliminary design (line, substations, communication and SCADA systems), economic and financial analysis;
- Preparation of the prequalification and tender documents and the required split of works into different lots;
- Training programme / human resource development for the concerned electricity companies, energy ministries and for staff of the General Directorate of WAPP through training on the job and in the Consultant's home office.
Client
West African Power Pool (WAPP) / Système d'Echange d'Energie Electrique Ouest Africain (EEEOA)Financing
African Development BankPeriod of implementation
01.2014 - 06.2016Romanie - Tower Testing Station for Electromontaj S.A.
The project consisted in the design and construction supervision of a tower testing station for Electromontaj S.A. in Bucharest. The station can carry out design and sample tests for tubular towers and steel lattice towers, self-supported or anchor type. The testing station is capable to do design tests for giant and multi-circuit towers with 80 m height, 35 x 35 m base, 800 t compression load and 730 t tension load.
intec's services
- Concept of the tower testing station
- Preliminary study
- Analysis of investment costs
- Geotechnical investigations
- Detailed design
- Technical assistance during erection
- Commissioning
Client
S.C. Electromontaj S.A.Financing
S.C. Electromontaj S.A.Period of implementation
03.2013 - 06.2015-
Burkina Faso - Reinforcement of Electrical Infrastructure and on Rural Electrification (PRIELER):
Objective of this project was the elaboration of draft studies that deliver sufficient justification for the implementation of the following works:
- Restructuring and extension of the electrical networks of Ouagadougou,
- Construction of the 132 kV interconnection line Zano - Koupèla.
Design studies, preliminary cost estimates, time schedules, detailed design, and tender dossiers were prepared to determine all requirements for an efficient implementation of the two projects.
A feasibility study was carried out for the interconnection line Zano - Koupèla resulting in the detailed design for the line, including line route study, environmental and social impact assessment (ESIA), and the choice of the substation locations.
intec's services
- Determination of the technical feasibility of the two projects;
- Preliminary engineering studies;
- Determination of the economic and financial feasibility of the projects;
- Preparation of detailed design for the two projects;
- Preparation of tender documents;
- Capacity building for the staff of SONABEL and PRIELER through training and transfer of technical know-how.
Client
Société National d'Electricité du Burkina - SONABELFinancing
African Development BankPeriod of implementation
07.2011 - 03.2016 -
Nigeria - Integrated Energy Supply Project at Abuja Technology Village Free Zone
ATV is the master developer of Abuja Technology Village, a science and technology park and special economic zone which is intended to become a preferred technology research, incubation, development and outsourcing destination, hosting biotechnology, information and communications, energy and minerals technology companies.
Energy supply, transmission and distribution are required for the site within which a cluster area of approx. 100 ha will be developed initially.
intec's services
Provision of an integrated energy supply concept for the science and technology park including the following:
- demand assessment
- analysis and recommendations on technology options for efficient power sources and delivery / grid connection
- technical feasibility study and basic layout for power generation options (including 72 MWp PV and 5 MW / 5 MWh battery storage)
- financial analysis including viability and risk assessment
- analysis of the regulatory framework
Client
Abuja Technology Village Free Zone Company (ATV)Financing
Abuja Technology Village Free Zone Company (ATV)Period of implementation
11.2015 - 02.2016 -
Kenya - 400 kV Loiyangalani - Suswa Transmission Line
A 428 km 400 kV transmission will transport the power generated by the Lake Turkana Wind Power (LTWP) project to the national grid at Suswa, via Baragoi, South Horr, Marti, Morijo, Longewan, Rumuruti and Ol Kalou.
Work under the project included review of basic design, technical specifications and engineering design for the double-circuit line (steel lattice towers, composite insulators and ACSR conductors, double OPGW).
The project was carried out for Kenya Electricity Transmission Company Limited (KETRACO) with financing from African Development Bank (AfDB).
intec's services
- Conductor study
- Insulation coordination study
- Wind study
- Basic design
- Technical specifications
- Calibration of PLS CADD and tower programs
- Tower and foundation design
- Tower spotting with LIDAR technology
- Tower type testing.
Client
ISOLUX CORSANFinancing
ISOLUX CORSANPeriod of implementation
05.2011 - 02.2016
Burkina Faso - Reinforcement of Electrical Infrastructure and on Rural Electrification (PRIELER):
Objective of this project was the elaboration of draft studies that deliver sufficient justification for the implementation of the following works:
- Restructuring and extension of the electrical networks of Ouagadougou,
- Construction of the 132 kV interconnection line Zano - Koupèla.
Design studies, preliminary cost estimates, time schedules, detailed design, and tender dossiers were prepared to determine all requirements for an efficient implementation of the two projects.
A feasibility study was carried out for the interconnection line Zano - Koupèla resulting in the detailed design for the line, including line route study, environmental and social impact assessment (ESIA), and the choice of the substation locations.
intec's services
- Determination of the technical feasibility of the two projects;
- Preliminary engineering studies;
- Determination of the economic and financial feasibility of the projects;
- Preparation of detailed design for the two projects;
- Preparation of tender documents;
- Capacity building for the staff of SONABEL and PRIELER through training and transfer of technical know-how.
Client
Société National d'Electricité du Burkina - SONABELFinancing
African Development BankPeriod of implementation
07.2011 - 03.2016Nigeria - Integrated Energy Supply Project at Abuja Technology Village Free Zone
ATV is the master developer of Abuja Technology Village, a science and technology park and special economic zone which is intended to become a preferred technology research, incubation, development and outsourcing destination, hosting biotechnology, information and communications, energy and minerals technology companies.
Energy supply, transmission and distribution are required for the site within which a cluster area of approx. 100 ha will be developed initially.
intec's services
Provision of an integrated energy supply concept for the science and technology park including the following:
- demand assessment
- analysis and recommendations on technology options for efficient power sources and delivery / grid connection
- technical feasibility study and basic layout for power generation options (including 72 MWp PV and 5 MW / 5 MWh battery storage)
- financial analysis including viability and risk assessment
- analysis of the regulatory framework
Client
Abuja Technology Village Free Zone Company (ATV)Financing
Abuja Technology Village Free Zone Company (ATV)Period of implementation
11.2015 - 02.2016Kenya - 400 kV Loiyangalani - Suswa Transmission Line
A 428 km 400 kV transmission will transport the power generated by the Lake Turkana Wind Power (LTWP) project to the national grid at Suswa, via Baragoi, South Horr, Marti, Morijo, Longewan, Rumuruti and Ol Kalou.
Work under the project included review of basic design, technical specifications and engineering design for the double-circuit line (steel lattice towers, composite insulators and ACSR conductors, double OPGW).
The project was carried out for Kenya Electricity Transmission Company Limited (KETRACO) with financing from African Development Bank (AfDB).
intec's services
- Conductor study
- Insulation coordination study
- Wind study
- Basic design
- Technical specifications
- Calibration of PLS CADD and tower programs
- Tower and foundation design
- Tower spotting with LIDAR technology
- Tower type testing.
Client
ISOLUX CORSANFinancing
ISOLUX CORSANPeriod of implementation
05.2011 - 02.2016-
Pakistan - Study to Determine the Limit of Integrating Intermittent Renewable (Wind & Solar) Resources onto Pakistan National Grid
The Government of Pakistan encourages the development of renewable energy to close the gap between electricity demand and supply. The National Transmission and Dispatch Company (NTDC) is already in the process of integrating wind power, and many large and small solar parks have been added to NDTC's pipeline. NDTC requested to conduct the present power system study to clarify the limits of integrating RE into Pakistan's grid. The study includes the following subjects:
- Planning studies (load flow, dynamic and transient stability, impact of fault levels on substation protection and design, reactive power and voltage control, power quality issues, system flexibility requirements, system's frequency response)
- Operational studies (operation and control strategy, dispatch policy, methodology to forecast wind and solar power availability, determination of active spinning reserve)
- Financial analysis (determination of financial impact of wind and solar energy resources on Pakistan's overall energy mix)
All activities are closely coordinated with NTDC and the Alternative Energy Development Board (AEDB).
intec's services
- Overall project management and coordination;
- Data collection and organisation of local support activities;
- Coordination of planning studies;
- Development of the methodology to forecast wind and solar power availability;
- Presentation, discussion and agreement with NTDC and AEDB of the operational studies;
- Financial analysis, i.e. the determination of the financial impact of wind and solar energy resources on Pakistan's overall energy mix and the corresponding consumer prices. This analysis considers cost and price projection scenarios for the time horizon until the year 2022 and an assessment of the financial benefits of the Clean Development Mechanism (CDM).
Client
Advanced Engineering Associates International, Inc.Financing
USAID Energy Policy ProgramPeriod of implementation
11.2014 - 12.2015 -
Slovakia - 400 kV Overhead Transmission Lines and 400 kV Substations (Stage 2: Project Implementation)
Project management and technical consultancy services to the PMU within SEPS for the planning, execution, management, coordination and monitoring of all aspects of implementing the measures in the transmission sector arising from the final shut-down of Bohunice VI NPP:
- Extension of the two 400 kV substations Bošáca and Lemešany
- Upgrading the 400/110 kV substation Medzibrod + 350 MVA transformer
- Replacement of the 2 x 220 kV overhead lines by two 400 kV lines (Medzibrod - Sucany and Medzibrod - Liptovska) of 70 km in total.
intec's services
- Overall project management
- Update of the PMU's organisational structure
- Overall project cost control: implementation of a cost control system, cost reports, verification and certification of contractors' invoices, disbursement procedure
- Periodic update of project interface plan
- Risk assessment and management: identification and review of potential project risks and their impacts
- Contract Implementation:
- Provision and update of project implementation tools (procedures, manuals, etc.),
- Monitoring of EPC contracts (engineering, manufacturing, construction and commissioning, deviations, claims, variation orders, defects and disputes)
- Supervision of installation, testing, commissioning and acceptance of works
- Safety and Licensing: establishment and periodic review of licensing process and plan
- Quality Assurance: Update of the PMU QA Plan and establishment of separate QA plans for the single projects.
Client
SEPS - Slovenska Electrizacna Prenosova Sustava a.s.Financing
European Bank for Reconstruction and Development (EBRD)Period of implementation
12.2009 - 12.2015 -
Nigeria - 330 kV DC transmission line between Benin North and Oshogbo
Consultancy services for the construction and erection of:
- 260 km of 330 kV DC transmission line between Benin North and Oshogbo with line-in / line-out to the new 330/132 kV Akure Substation
- the new 2 x 150 MVA, 330/132 + 2 x 60 MVA, 132/33 kV Substation Akure
- the extension of Benin North and Oshogbo 330/132 substations by two 330 kV line bays.
intec's services
- Project coordination, management and supervision
- Technical control of designs
- Receipt of equipment in the factory and of supplies to site
- Monitoring of works execution on site
- Commissioning and testing upon works completion
- Services during the defects liability period (DLP)
- Technology transfer to Employer's engineers.
Client
Transmission Company of Nigeria PLCPeriod of implementation
12.2011 - 12.2015
Pakistan - Study to Determine the Limit of Integrating Intermittent Renewable (Wind & Solar) Resources onto Pakistan National Grid
The Government of Pakistan encourages the development of renewable energy to close the gap between electricity demand and supply. The National Transmission and Dispatch Company (NTDC) is already in the process of integrating wind power, and many large and small solar parks have been added to NDTC's pipeline. NDTC requested to conduct the present power system study to clarify the limits of integrating RE into Pakistan's grid. The study includes the following subjects:
- Planning studies (load flow, dynamic and transient stability, impact of fault levels on substation protection and design, reactive power and voltage control, power quality issues, system flexibility requirements, system's frequency response)
- Operational studies (operation and control strategy, dispatch policy, methodology to forecast wind and solar power availability, determination of active spinning reserve)
- Financial analysis (determination of financial impact of wind and solar energy resources on Pakistan's overall energy mix)
All activities are closely coordinated with NTDC and the Alternative Energy Development Board (AEDB).
intec's services
- Overall project management and coordination;
- Data collection and organisation of local support activities;
- Coordination of planning studies;
- Development of the methodology to forecast wind and solar power availability;
- Presentation, discussion and agreement with NTDC and AEDB of the operational studies;
- Financial analysis, i.e. the determination of the financial impact of wind and solar energy resources on Pakistan's overall energy mix and the corresponding consumer prices. This analysis considers cost and price projection scenarios for the time horizon until the year 2022 and an assessment of the financial benefits of the Clean Development Mechanism (CDM).
Client
Advanced Engineering Associates International, Inc.Financing
USAID Energy Policy ProgramPeriod of implementation
11.2014 - 12.2015Slovakia - 400 kV Overhead Transmission Lines and 400 kV Substations (Stage 2: Project Implementation)
Project management and technical consultancy services to the PMU within SEPS for the planning, execution, management, coordination and monitoring of all aspects of implementing the measures in the transmission sector arising from the final shut-down of Bohunice VI NPP:
- Extension of the two 400 kV substations Bošáca and Lemešany
- Upgrading the 400/110 kV substation Medzibrod + 350 MVA transformer
- Replacement of the 2 x 220 kV overhead lines by two 400 kV lines (Medzibrod - Sucany and Medzibrod - Liptovska) of 70 km in total.
intec's services
- Overall project management
- Update of the PMU's organisational structure
- Overall project cost control: implementation of a cost control system, cost reports, verification and certification of contractors' invoices, disbursement procedure
- Periodic update of project interface plan
- Risk assessment and management: identification and review of potential project risks and their impacts
- Contract Implementation:
- Provision and update of project implementation tools (procedures, manuals, etc.),
- Monitoring of EPC contracts (engineering, manufacturing, construction and commissioning, deviations, claims, variation orders, defects and disputes)
- Supervision of installation, testing, commissioning and acceptance of works
- Safety and Licensing: establishment and periodic review of licensing process and plan
- Quality Assurance: Update of the PMU QA Plan and establishment of separate QA plans for the single projects.
Client
SEPS - Slovenska Electrizacna Prenosova Sustava a.s.Financing
European Bank for Reconstruction and Development (EBRD)Period of implementation
12.2009 - 12.2015Nigeria - 330 kV DC transmission line between Benin North and Oshogbo
Consultancy services for the construction and erection of:
- 260 km of 330 kV DC transmission line between Benin North and Oshogbo with line-in / line-out to the new 330/132 kV Akure Substation
- the new 2 x 150 MVA, 330/132 + 2 x 60 MVA, 132/33 kV Substation Akure
- the extension of Benin North and Oshogbo 330/132 substations by two 330 kV line bays.
intec's services
- Project coordination, management and supervision
- Technical control of designs
- Receipt of equipment in the factory and of supplies to site
- Monitoring of works execution on site
- Commissioning and testing upon works completion
- Services during the defects liability period (DLP)
- Technology transfer to Employer's engineers.