HV & EHV grids - Project examples
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Burundi - 220 kV Line Kamanyola - Bujumbura, Associated 110 kV Lines and the 220/110/30/10 kV Substation Bujumbura
The project is part of the "Multinational Project for the Interconnection of the Electrical Networks of the Nile Equatorial Lake Countries" (Projet multinational d'interconnexion des réseaux électriques des pays des lacs équatoriaux du Nil (PMIREL-PLEN) that aims at establishing a 220 kV interconnection between Ruzizi III Substation at Kamanyola (D.R. Congo) and the Rubirizi Substation in Burundi to evacuate the Burundian part of the energy produced by the future 145 MW Ruzizi III Hydropower Plant. The project covers the following technical measures:
- construction of a 220 kV single-circuit line of 80 km length
- construction of a total of 8 km of 110 kV double-circuit lines
- construction of a 30 kV double-circuit line
- construction of a new 220/110/30 kV substation at Rubirizi (2 autotransformers 220/110/30 kV, 48/64/80 MVA with a 18/24/30 MVA tertiary winding)
- extension of the 110 kV Substation "RN1" to accommodate the connection of the new 220/110 kV substation
- construction of a new 30/10 kV substation equipped with two 30/10 kV, 10 MVA transformers
intec's services
- Detailed design, technical specifications and cost estimate for the 30/10 kV substation equipment
- Consolidation of the tender dossier for the 220/110/30 kV substation
- Assistance to the Employer during tendering for the 220/110/30/10 kV substation works
- Review of the design for the 220 and 110 kV lines equipment
- Factory acceptance testing for all equipment under the project
- Receipt of materials and equipment to site
- Works supervision and general assistance for the management of the project
- Project completion, testing and commissioning
- Certification of payments
- Reporting
Client
REGIDESOFinancing
African Development Bank (AfDB)Period of implementation
2.5.2017 - 1.5.2020 -
Guinea - Implementation of the National Dispatching
The general objective of this project is the monitoring and control of costs, of the quality and the time schedule of implementation works. The project includes all site works for the implementation of the National Dispatching Centre. Following EDG's long-term master plan, the National Dispatching Centre shall integrate transmission lines of the 60 and 110 kV level. The project has been interrupted due to the Ebola epidemic and new financing.
intec's services
- Coordination of activities between the Client EDG and the Contractor,
- Check and approval of the Contractor's design and drawings during works execution,
- Control of equipment manufacture,
- Factory acceptance tests for main equipment,
- Monthly / quarterly planning of project activities,
- Control of works progress and adherence to the time schedule,
- Coordination of meetings and drafting of Minutes of Meetings,
- Monitoring of cost and implementation schedule,
- Information to the Client about the progress of works and about any difficulties that could hamper a smooth project implementation,
- Elaboration of periodic progress reports,
- Recommendation of necessary intervention measures to the Project Implementation Unit,
- Validation of testing and commissioning procedures,
- Proposals for settlement of accounts, preliminary and final taking over of works.
Client
Electricité de Guinée (EDG)Financing
National Development Budget, Abu Dhabi Fund for Development (ADFD)Period of implementation
05.2014 - 12.2019 -
Georgia - 220 kV Overhead Transmission Line Akhaltsikhe - Batumi
Georgian State Electrosystem JSC (GSE) is undertaking the "Transmission Grid Strengthening Project" which includes measures to improve the availability and reliability of GSE's transmission infrastructure. The present project is part of this overall programme.
The line is constructed to connect the 185 MW Shuakhevi and the 150 MW Koromkheti Hydropower Stations to the national grid. It will have a length of approx. 150 km.
intec's services
- Overall project management and supervision
- Review and approval of detailed design
- Supervision of construction, erection, testing and commissioning
- Assistance to the Client in ensuring the compliance of land acquisition and resettlement activities with applicable laws and regulations (RAPs)
- Monitoring of compliance with the World Bank's environmental and social safeguards and the national Georgian legislation (ESIA, EMMP)
- Verification and approval of Contractor's invoices
- Reporting to the Client
- Capacity building for Client's personnel
Client
Georgian State Electrosystem JSCFinancing
International Bank for Reconstruction and Development (IBRD)Period of implementation
2015 - 2019
Burundi - 220 kV Line Kamanyola - Bujumbura, Associated 110 kV Lines and the 220/110/30/10 kV Substation Bujumbura
The project is part of the "Multinational Project for the Interconnection of the Electrical Networks of the Nile Equatorial Lake Countries" (Projet multinational d'interconnexion des réseaux électriques des pays des lacs équatoriaux du Nil (PMIREL-PLEN) that aims at establishing a 220 kV interconnection between Ruzizi III Substation at Kamanyola (D.R. Congo) and the Rubirizi Substation in Burundi to evacuate the Burundian part of the energy produced by the future 145 MW Ruzizi III Hydropower Plant. The project covers the following technical measures:
- construction of a 220 kV single-circuit line of 80 km length
- construction of a total of 8 km of 110 kV double-circuit lines
- construction of a 30 kV double-circuit line
- construction of a new 220/110/30 kV substation at Rubirizi (2 autotransformers 220/110/30 kV, 48/64/80 MVA with a 18/24/30 MVA tertiary winding)
- extension of the 110 kV Substation "RN1" to accommodate the connection of the new 220/110 kV substation
- construction of a new 30/10 kV substation equipped with two 30/10 kV, 10 MVA transformers
intec's services
- Detailed design, technical specifications and cost estimate for the 30/10 kV substation equipment
- Consolidation of the tender dossier for the 220/110/30 kV substation
- Assistance to the Employer during tendering for the 220/110/30/10 kV substation works
- Review of the design for the 220 and 110 kV lines equipment
- Factory acceptance testing for all equipment under the project
- Receipt of materials and equipment to site
- Works supervision and general assistance for the management of the project
- Project completion, testing and commissioning
- Certification of payments
- Reporting
Client
REGIDESOFinancing
African Development Bank (AfDB)Period of implementation
2.5.2017 - 1.5.2020Guinea - Implementation of the National Dispatching
The general objective of this project is the monitoring and control of costs, of the quality and the time schedule of implementation works. The project includes all site works for the implementation of the National Dispatching Centre. Following EDG's long-term master plan, the National Dispatching Centre shall integrate transmission lines of the 60 and 110 kV level. The project has been interrupted due to the Ebola epidemic and new financing.
intec's services
- Coordination of activities between the Client EDG and the Contractor,
- Check and approval of the Contractor's design and drawings during works execution,
- Control of equipment manufacture,
- Factory acceptance tests for main equipment,
- Monthly / quarterly planning of project activities,
- Control of works progress and adherence to the time schedule,
- Coordination of meetings and drafting of Minutes of Meetings,
- Monitoring of cost and implementation schedule,
- Information to the Client about the progress of works and about any difficulties that could hamper a smooth project implementation,
- Elaboration of periodic progress reports,
- Recommendation of necessary intervention measures to the Project Implementation Unit,
- Validation of testing and commissioning procedures,
- Proposals for settlement of accounts, preliminary and final taking over of works.
Client
Electricité de Guinée (EDG)Financing
National Development Budget, Abu Dhabi Fund for Development (ADFD)Period of implementation
05.2014 - 12.2019Georgia - 220 kV Overhead Transmission Line Akhaltsikhe - Batumi
Georgian State Electrosystem JSC (GSE) is undertaking the "Transmission Grid Strengthening Project" which includes measures to improve the availability and reliability of GSE's transmission infrastructure. The present project is part of this overall programme.
The line is constructed to connect the 185 MW Shuakhevi and the 150 MW Koromkheti Hydropower Stations to the national grid. It will have a length of approx. 150 km.
intec's services
- Overall project management and supervision
- Review and approval of detailed design
- Supervision of construction, erection, testing and commissioning
- Assistance to the Client in ensuring the compliance of land acquisition and resettlement activities with applicable laws and regulations (RAPs)
- Monitoring of compliance with the World Bank's environmental and social safeguards and the national Georgian legislation (ESIA, EMMP)
- Verification and approval of Contractor's invoices
- Reporting to the Client
- Capacity building for Client's personnel
Client
Georgian State Electrosystem JSCFinancing
International Bank for Reconstruction and Development (IBRD)Period of implementation
2015 - 2019-
Haiti - Construction of a Modern Dispatching
The present project constitutes Component 3 of the new investment programme for the energy sector in Haiti (PRELEN) which is supported by the major donors active in the sector. It aims at assisting EDH in the technical field, more specifically in the construction of a modern dispatching.
The existing dispatching was built in 1981 and manages the 115 and 69 kV levels on the generation and transmission side and the 12.47 kV level on the distribution side. The monitoring and dispatching of the network presently is done through permanent surveillance of the system frequency and by means of radio communication with the operators of the substations and the power plants.
intec's services
- Implementation studies and detailed engineering; engineering reports
- Preparation of the tender dossiers
- Launching of the tender and assistance during the tender period
- Bid evaluation, preparation of contract documents and contract enforcement
- Organisation and coordination of construction works
- Monitoring and supervision of works, quality control, receipt of material in the factory and on site
- Certification of contractors' invoices
- Preliminary and final acceptance
- Reporting.
Client
Electricité d'Haïti (EDH)Financing
International Development Agency (IDA)Period of implementation
24.10.2017 - 23.10.2019 -
Congo (DR) - 220 kV Line Ruzizi - Goma (DR Congo Part)
Phase 1 of the study includes a feasibility study, the detailed design and the elaboration of the tender documents for the construction of approx. 169 km 220 kV line Ruzizi - Goma. It also covers the environmental and social impact assessment (ESIA) as well as the elaboration of the resettlement action plan (RAP).
The detailed scope of works includes:
- the new transformer substation Buhandahanda, and
- the 220 kV line between the terminal tower at Goma substation and the new substation Buhandahanda (93 km).
Furthermore, the project comprises the selection of the contractors and the supervision of the above construction works (Phase 2).
intec's services
intec is the partner in charge of Phase 1 of the project which covers the following services:
- Feasibility study (data collection, demand study, line route study, summary environmental impact study),
- Design studies (network studies, line and substation design, cost estimate and implementation schedule, economic studies, financial analysis, analysis of project risks),
- Elaboration of the detailed designs and the tender dossiers for the substation and the line.
Furthermore, our experts are involved in Phase 2 (bid evaluation and contract award to contractors, home office back-up support, FAT, works supervision on site, commissioning, and final acceptance).
Client
Société Nationale d'Electricité (SNEL SARL), Projet NELSAPFinancing
African Development BankPeriod of implementation
1.7.2012 - 24.9.2019 -
Oman - 50 MW Wind Power Plant in Dhofar
Abu Dhabi Future Energy Company - Masdar is developing a 50 MW Wind Power Plant in Dhofar Governorate in the Saltant of Oman. The project consists of 13 turbines of the state-of-art GE wind technology, 2 substations and 13km OHL. The Project design, supply, construction and commissioning was awarded to an IPC consortium. The main stakeholders of this wind farm are RAECO as the future operator, OETC as the owner of the electricity transmission line and one substation, and OPWP as the procurer of the generated electricity from this wind power plant.
intec's services
Work Package 1: Assistance in bid evaluation (EPC and O&M):
- Evaluation of technical responsiveness, of the energy yield calculations provided in the bids, the proposed project schedule, warranties, deviations, and the O&M strategy
- Provision of technical support during contract negotiations
- Assistance in the preparation of the contract documents
Work Package 2: Project management consultancy services for design review, material approval, construction management and works supervision:
- Review of the power purchase agreement (PPA) and the transmission connection agreement (TCA)
- Review and approval of design
- Witnessing of FATs for the 132 kV OHL equipment, the 132 and 33 kV switchgears, the 132/33 kV power and auxiliary transformers, the wind energy converters and associated equipment, the cabling, and the protection and SCADA systems
- Monitoring of environmental management and health and safety plans
- Construction management and works supervision, and assistance in commissioning
Client
Abu Dhabi Future Energy Company – MASDARPeriod of implementation
04.2015 - 07.2019
Haiti - Construction of a Modern Dispatching
The present project constitutes Component 3 of the new investment programme for the energy sector in Haiti (PRELEN) which is supported by the major donors active in the sector. It aims at assisting EDH in the technical field, more specifically in the construction of a modern dispatching.
The existing dispatching was built in 1981 and manages the 115 and 69 kV levels on the generation and transmission side and the 12.47 kV level on the distribution side. The monitoring and dispatching of the network presently is done through permanent surveillance of the system frequency and by means of radio communication with the operators of the substations and the power plants.
intec's services
- Implementation studies and detailed engineering; engineering reports
- Preparation of the tender dossiers
- Launching of the tender and assistance during the tender period
- Bid evaluation, preparation of contract documents and contract enforcement
- Organisation and coordination of construction works
- Monitoring and supervision of works, quality control, receipt of material in the factory and on site
- Certification of contractors' invoices
- Preliminary and final acceptance
- Reporting.
Client
Electricité d'Haïti (EDH)Financing
International Development Agency (IDA)Period of implementation
24.10.2017 - 23.10.2019Congo (DR) - 220 kV Line Ruzizi - Goma (DR Congo Part)
Phase 1 of the study includes a feasibility study, the detailed design and the elaboration of the tender documents for the construction of approx. 169 km 220 kV line Ruzizi - Goma. It also covers the environmental and social impact assessment (ESIA) as well as the elaboration of the resettlement action plan (RAP).
The detailed scope of works includes:
- the new transformer substation Buhandahanda, and
- the 220 kV line between the terminal tower at Goma substation and the new substation Buhandahanda (93 km).
Furthermore, the project comprises the selection of the contractors and the supervision of the above construction works (Phase 2).
intec's services
intec is the partner in charge of Phase 1 of the project which covers the following services:
- Feasibility study (data collection, demand study, line route study, summary environmental impact study),
- Design studies (network studies, line and substation design, cost estimate and implementation schedule, economic studies, financial analysis, analysis of project risks),
- Elaboration of the detailed designs and the tender dossiers for the substation and the line.
Furthermore, our experts are involved in Phase 2 (bid evaluation and contract award to contractors, home office back-up support, FAT, works supervision on site, commissioning, and final acceptance).
Client
Société Nationale d'Electricité (SNEL SARL), Projet NELSAPFinancing
African Development BankPeriod of implementation
1.7.2012 - 24.9.2019Oman - 50 MW Wind Power Plant in Dhofar
Abu Dhabi Future Energy Company - Masdar is developing a 50 MW Wind Power Plant in Dhofar Governorate in the Saltant of Oman. The project consists of 13 turbines of the state-of-art GE wind technology, 2 substations and 13km OHL. The Project design, supply, construction and commissioning was awarded to an IPC consortium. The main stakeholders of this wind farm are RAECO as the future operator, OETC as the owner of the electricity transmission line and one substation, and OPWP as the procurer of the generated electricity from this wind power plant.
intec's services
Work Package 1: Assistance in bid evaluation (EPC and O&M):
- Evaluation of technical responsiveness, of the energy yield calculations provided in the bids, the proposed project schedule, warranties, deviations, and the O&M strategy
- Provision of technical support during contract negotiations
- Assistance in the preparation of the contract documents
Work Package 2: Project management consultancy services for design review, material approval, construction management and works supervision:
- Review of the power purchase agreement (PPA) and the transmission connection agreement (TCA)
- Review and approval of design
- Witnessing of FATs for the 132 kV OHL equipment, the 132 and 33 kV switchgears, the 132/33 kV power and auxiliary transformers, the wind energy converters and associated equipment, the cabling, and the protection and SCADA systems
- Monitoring of environmental management and health and safety plans
- Construction management and works supervision, and assistance in commissioning
Client
Abu Dhabi Future Energy Company – MASDARPeriod of implementation
04.2015 - 07.2019-
Viet Nam - Solar PV plant Phuoc Thai 2 and 3 - Gap closing in the preparation phase
The project concept design prepared by the Project Executing Agency EVN provides for 200 MWp of solar generation in three phases. The Government of Vietnam has requested financing support from German Financial Cooperation via KfW.
Phase 1 provides for 50 MWp, including DC to 22 kV AC invertors, a control building, access roads and a new 2 x 125 MVA 220/22 step-up substation to interconnect with EVN´s existing 220 kV double circuit transmission line.
The subsequent Phases 2 (100 MWp) and 3 (50 MWp) under KfW funding will add an additional 150 MWp of solar generation in the selected areas.
intec's services
- Gap-closing on the technical pre-feasibility and feasibility study prepared by a local engineering consultant
- Due Diligence report
- Independent yield assessment, including a solar resource assessment
- Grid integration study (production curve, steady-state analysis, dynamic analysis, know-how transfer)
- Implementation concept and initial technical specifications
- Cost estimates
Client
KfW Development BankFinancing
KfW Development BankPeriod of implementation
06.2018 - 05.2019 -
Romania - 110 kV to 750 kV overhead lines
The contract involves providing consultancy services and analysis of solutions in order to achieve safe and efficient operations for 110 kV to 750 kV overhead lines: services for all activities related to OHLs; consultancy for rocurement and supply of materials; consultancy for drafting normative activities, technical specifications, regulations, etc. related to OHLs.
intec's services
- Basic and detailed design
- Feasibility studies
- Elaboration of technical specifications
- Elaboration of design norms and prescriptions
- Financial and risk analyses
- Elaboration of technical documentation for land acquisition, permits and authorizations
Client
C.N.T.E.E. TRANSELECTRICA S.A.Financing
TRANSELECTRICAPeriod of implementation
29.2.2016 - 28.2.2019 -
Cambodia - Extension of the medium distribution grid
The objective of the project is to upgrade and expand distribution and transmission infrastructure for increased access to energy, improved electricity services for the rural population and to contribute to primary energy savings.
The tentative scope of the project is the following:- Component 1: Extension of the medium distribution grid (either 22 kV or/and 35 kV, incl. station transformers) in the rural areas
- Component 2: Construction of two new 115/22 kV grid AIS and GIS substations for strengthening the power evacuation to the 22 kV grid
intec in its role as the Consultant shall undertake investigations to assess the technical and economic justification of the planned transmission system expansion.
intec's services
- Brief review of the context of the power sector
- Assessment of the power sub-sector transmission & distribution in the project area, incl. a network analysis
- Survey of AIS and GIS substation areas and review of conceptual AIS and GIS substation design, and provision of an analysis of a potential new AIS and GIS substation
- Review of a future AIS and GIS Substation in the centre of Siem Reap
- Review of proposed enhancement of the MV transmission system
- Identification of additional investment needs
- Conceptual Design of the proposed measures
- Review of operation and maintenance concept and identification of training needs
- Cost estimates and investment budget
- Impact assessment and indicators (climate mitigation, access to electricity, local economic development)
- Economic and financial analysis
- Draft implementation concept, procurement plan and project timetable
- Risk assessment
Client
Electricité du Cambodge represented by KfWFinancing
KfW Development BankPeriod of implementation
08.2018 - 02.2019
Viet Nam - Solar PV plant Phuoc Thai 2 and 3 - Gap closing in the preparation phase
The project concept design prepared by the Project Executing Agency EVN provides for 200 MWp of solar generation in three phases. The Government of Vietnam has requested financing support from German Financial Cooperation via KfW.
Phase 1 provides for 50 MWp, including DC to 22 kV AC invertors, a control building, access roads and a new 2 x 125 MVA 220/22 step-up substation to interconnect with EVN´s existing 220 kV double circuit transmission line.
The subsequent Phases 2 (100 MWp) and 3 (50 MWp) under KfW funding will add an additional 150 MWp of solar generation in the selected areas.
intec's services
- Gap-closing on the technical pre-feasibility and feasibility study prepared by a local engineering consultant
- Due Diligence report
- Independent yield assessment, including a solar resource assessment
- Grid integration study (production curve, steady-state analysis, dynamic analysis, know-how transfer)
- Implementation concept and initial technical specifications
- Cost estimates
Client
KfW Development BankFinancing
KfW Development BankPeriod of implementation
06.2018 - 05.2019Romania - 110 kV to 750 kV overhead lines
The contract involves providing consultancy services and analysis of solutions in order to achieve safe and efficient operations for 110 kV to 750 kV overhead lines: services for all activities related to OHLs; consultancy for rocurement and supply of materials; consultancy for drafting normative activities, technical specifications, regulations, etc. related to OHLs.
intec's services
- Basic and detailed design
- Feasibility studies
- Elaboration of technical specifications
- Elaboration of design norms and prescriptions
- Financial and risk analyses
- Elaboration of technical documentation for land acquisition, permits and authorizations
Client
C.N.T.E.E. TRANSELECTRICA S.A.Financing
TRANSELECTRICAPeriod of implementation
29.2.2016 - 28.2.2019Cambodia - Extension of the medium distribution grid
The objective of the project is to upgrade and expand distribution and transmission infrastructure for increased access to energy, improved electricity services for the rural population and to contribute to primary energy savings.
The tentative scope of the project is the following:
- Component 1: Extension of the medium distribution grid (either 22 kV or/and 35 kV, incl. station transformers) in the rural areas
- Component 2: Construction of two new 115/22 kV grid AIS and GIS substations for strengthening the power evacuation to the 22 kV grid
intec in its role as the Consultant shall undertake investigations to assess the technical and economic justification of the planned transmission system expansion.
intec's services
- Brief review of the context of the power sector
- Assessment of the power sub-sector transmission & distribution in the project area, incl. a network analysis
- Survey of AIS and GIS substation areas and review of conceptual AIS and GIS substation design, and provision of an analysis of a potential new AIS and GIS substation
- Review of a future AIS and GIS Substation in the centre of Siem Reap
- Review of proposed enhancement of the MV transmission system
- Identification of additional investment needs
- Conceptual Design of the proposed measures
- Review of operation and maintenance concept and identification of training needs
- Cost estimates and investment budget
- Impact assessment and indicators (climate mitigation, access to electricity, local economic development)
- Economic and financial analysis
- Draft implementation concept, procurement plan and project timetable
- Risk assessment