HV & EHV grids - Project examples
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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/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)
- Additionally, 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 integrating the new 225 kV line into WAPP's interconnected network (over a time span of 20 years of operation), preliminary design (line, substations, communication and SCADA systems), economic and financial analysis
- Preparation of the prequalification/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 -
Burkina Faso - Reinforcement of Electrical Infrastructure and on Rural Electrification (PRIELER)
The objective of this project was the elaboration of draft studies that deliver sufficient justification to implement 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
- Determining the technical feasibility of both projects
- Preliminary engineering studies
- Determining the economic and financial feasibility of both projects
- Preparation of detailed design for both 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
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/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)
- Additionally, 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 integrating the new 225 kV line into WAPP's interconnected network (over a time span of 20 years of operation), preliminary design (line, substations, communication and SCADA systems), economic and financial analysis
- Preparation of the prequalification/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 - 06.2016Burkina Faso - Reinforcement of Electrical Infrastructure and on Rural Electrification (PRIELER)
The objective of this project was the elaboration of draft studies that deliver sufficient justification to implement 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
- Determining the technical feasibility of both projects
- Preliminary engineering studies
- Determining the economic and financial feasibility of both projects
- Preparation of detailed design for both 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 - 02.2016-
Kenya - 400 kV Loiyangalani - Suswa Transmission Line
A 428 km/400 kV transmission will transport 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’s focus 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 programmes
- Tower and foundation design
- Tower spotting with LIDAR technology
- Tower type testing
Client
ISOLUX CORSANFinancing
ISOLUX CORSANPeriod of implementation
05.2011 - 02.2016 -
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 -
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
Kenya - 400 kV Loiyangalani - Suswa Transmission Line
A 428 km/400 kV transmission will transport 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’s focus 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 programmes
- Tower and foundation design
- Tower spotting with LIDAR technology
- Tower type testing
Client
ISOLUX CORSANFinancing
ISOLUX CORSANPeriod of implementation
05.2011 - 02.2016Slovakia - 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 - 12.2015Pakistan - 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-
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 -
Georgia - Protection and Control Systems in ten Substations and Rehabilitation of the 35, 10 and 6 kV Switchgears in 13 Substations
GSE provides transmission and exclusive dispatch services to about 50 eligible companies in Georgia. Voltage levels include 500/400/330/220/110 and 35 kV. GSE and its subsidiary own the largest part of the high-voltage transmission network including the National Control Centre. GSE is constantly improving the system's availability and reliability through numerous investment measures. The current project considered two ongoing projects, i.e:
- Rehabilitation of protection and control systems of 10 substations of GSE, and
- Rehabilitation of the 35, 10 and 6 kV switchgears in 13 substations.
Both projects were in progress, with some parts being finalised; for others, commissioning, testing and taking over was ongoing.
USAID and GSE agreed to engage a new oversight consultant (OC) from December 2014 until the end of the projects.
intec's services
- Follow-up of installation and commissioning works performed by GSE (site visits; review and approval of reports; summarising the findings in a report to USAID and GSE)
- Final inspection/final tests in all eight substations together with GSE; assessment of taking-over by GSE
- Final inspection of the 12 USAID-financed MV switchgears; assessment of supply, installation, commissioning and testing works
- Preparation of a report on the ‘Consultant's Conclusions’ for USAID
Client
Georgian State Electrosystem JSC (GSE)Financing
USAIDPeriod of implementation
12.2014 - 10.2015 -
Bangladesh - New 230/132 kV and 132/33 kV GIS substations
In its ‘Government Vision 2021’, the Government of Bangladesh plans to supply electricity throughout the country by the year 2021. A study of the whole transmission network of Bangladesh revealed that a considerable number of grid substations and transmission lines, especially in rural areas, will be overloaded. Also, a number of substations will need renovation and modification to replace their aged equipment and unconventional designs.
Against this background, the present study shall develop necessary measures concerning:
- New 230/132 kV and 132/33 kV GIS substations
- Transmission line and substation renovation/upgrading and development
The study shall prioritise proposed rehabilitation measures to account for different loan packages under discussion.
intec's services
- Review and update of information on the power subsector (incl. power plants, transmission and distribution grids, supply and consumption patterns, load forecast, losses, availability and reliability of electricity)
- Assessment of the power sector in the project areas and network analysis (update of existing load flow calculations for the timespans 2019, 2022 and 2027)
- Review of preliminary line route identification provided by PGCB
- Preliminary survey of substation areas
- Proposal for layout of the transmission systems (line optimisation and tower spotting, line connections at existing substations, substation line-in/line-out connections, substation design (electrical, civil, communications/SCADA, access)
- Identification of training needs at PGCB concerning system planning and operation
- Cost estimates and economic and financial analyses
- Review of ESIA, mitigation measures and resettlement action plans
Client
Power Grid Company of Bangladesh Ltd. (PGCB)Financing
KfW EntwicklungsbankPeriod of implementation
03.2015 - 09.2015
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 - 12.2015Georgia - Protection and Control Systems in ten Substations and Rehabilitation of the 35, 10 and 6 kV Switchgears in 13 Substations
GSE provides transmission and exclusive dispatch services to about 50 eligible companies in Georgia. Voltage levels include 500/400/330/220/110 and 35 kV. GSE and its subsidiary own the largest part of the high-voltage transmission network including the National Control Centre. GSE is constantly improving the system's availability and reliability through numerous investment measures. The current project considered two ongoing projects, i.e:
- Rehabilitation of protection and control systems of 10 substations of GSE, and
- Rehabilitation of the 35, 10 and 6 kV switchgears in 13 substations.
Both projects were in progress, with some parts being finalised; for others, commissioning, testing and taking over was ongoing.
USAID and GSE agreed to engage a new oversight consultant (OC) from December 2014 until the end of the projects.
intec's services
- Follow-up of installation and commissioning works performed by GSE (site visits; review and approval of reports; summarising the findings in a report to USAID and GSE)
- Final inspection/final tests in all eight substations together with GSE; assessment of taking-over by GSE
- Final inspection of the 12 USAID-financed MV switchgears; assessment of supply, installation, commissioning and testing works
- Preparation of a report on the ‘Consultant's Conclusions’ for USAID
Client
Georgian State Electrosystem JSC (GSE)Financing
USAIDPeriod of implementation
12.2014 - 10.2015Bangladesh - New 230/132 kV and 132/33 kV GIS substations
In its ‘Government Vision 2021’, the Government of Bangladesh plans to supply electricity throughout the country by the year 2021. A study of the whole transmission network of Bangladesh revealed that a considerable number of grid substations and transmission lines, especially in rural areas, will be overloaded. Also, a number of substations will need renovation and modification to replace their aged equipment and unconventional designs.
Against this background, the present study shall develop necessary measures concerning:
- New 230/132 kV and 132/33 kV GIS substations
- Transmission line and substation renovation/upgrading and development
The study shall prioritise proposed rehabilitation measures to account for different loan packages under discussion.
intec's services
- Review and update of information on the power subsector (incl. power plants, transmission and distribution grids, supply and consumption patterns, load forecast, losses, availability and reliability of electricity)
- Assessment of the power sector in the project areas and network analysis (update of existing load flow calculations for the timespans 2019, 2022 and 2027)
- Review of preliminary line route identification provided by PGCB
- Preliminary survey of substation areas
- Proposal for layout of the transmission systems (line optimisation and tower spotting, line connections at existing substations, substation line-in/line-out connections, substation design (electrical, civil, communications/SCADA, access)
- Identification of training needs at PGCB concerning system planning and operation
- Cost estimates and economic and financial analyses
- Review of ESIA, mitigation measures and resettlement action plans