Reference projects
Electric power transmission and distribution
Electrical substations reference works
Romania - Moldova Interconnection (Phase I), Vulcanesti back-to-back substation (EBRD/EIB/NIF co-financed contract)
Client: Manitoba Hydro International / Moldelectrica
Refurbishment of 400/110/20 kV Smardan station
Client: Transelectrica
Total refurbishment of the substation at all voltage levels without applying the step-by-step solution and total long circuit interruption. The design phases were Prefeasibility Study, Feasibility Study and Technical Design + Specifications.
The connection scheme at 400kV is 1 1/2 breakers/circuit, with two busbars to which 5 line bays are connected, 2 250MVA 400/110/20kV transformer bays, 1 100MVAr 400kV compensation coil bay, 2 busbar metering bays and 2 spare bays. The substation is an outdoor type with air insulation.
The connection scheme of the 110kV substation is with 2 busbars, both sectioned, to which are connected 15 line bays, 2 transformer bays 250MVA 400/110/20kV, 1 transformer bay 10MVA 110/20kV, 2 bus coupler bays, 1 bus and section coupler and 4 busbar metering bays, 1 reserve transformer bay and 6 reserve line bays.
The 400kV substation was built in 5 phases, carrying out a series of line provisioning works and the 110kV substation was built in 10 phases, making a series of provisioning works using mobile bays and 110kV single-phase cables with pre-installed ends.
The implementation of the provisionals allowed the line/transformer bays not to be disconnected from the power supply for a long time, ensuring the safety of the National Power System.
Refurbishment of the 400/220/110kV Resita substation
Client: Elcomex
Refurbishment of the 220 and 110kV substation and construction of a new 400kV substation on the existing site. The design phases are Technical Project and Execution Details.
The connection scheme of the 400kV, 220kV and 110kV substations is with 2 busbars made in rigid version. The substations are outdoor type with air insulation.
To the 400kV substation busbars will be connected 5 line bays, 1 250MVA 400/110/20kV transformer bay, 1 400MVA 400/220/20kV autotransformer bay, 1 100MVAr 400kV compensation coil bay, 1 bus coupler bay and 2 busbar metering bays.
At the 220kV substation busbars will be connected 5 line bays, 1 autotransformer bay 200MVA 220/110/20kV, 1 autotransformer bay 400MVA 400/220/20kV, 1 bus coupler bay and 2 busbar measuring bays.
At the 110kV substation busbars will be connected 15 line bays, 1 250MVA 400/110/20kV transformer bay, 1 200MVA 220/110/20kV autotransformer bay, 1 bus coupler bay and 2 busbar metering bays.
The refurbishment of the 220kV and 110kV substations was done using temporary lines and mobile bays. The 400kV substation will operate in the first stage with 2 lines at 220kV voltage, using a wire provisional between these bays and the 220kV substation busses.
Refurbishment of the 110kV Timisoara substation and the transition to 400kV voltage of the Portile de Fier-Anina-Resita-Timisoara-Sacalaz-Arad axis. 400kV Timisoara substation
Client: Transelectrica
Refurbishment of the 110kV substation, upgrading of the 220kV substation with the exception of a 220kV line to 400kV. The design phases were Feasibility Study and Technical Design + Specifications.
The connection scheme of the 400kV substation is with 2 busbars made in rigid version, to which are connected 2 line bays, 2 250MVA 400/110/20kV transformer bays, 1 400MVA 400/220/20kV autotransformer bay, 1 bus couplerbay and 2 busbar metering bays. The substation is outdoor type with air insulation.
The connection diagram of the 220kV substation is 400MVA 400/220/20kV autotransformer block line. The block line is made with conventional outdoor type equipment.
The connection scheme of the 400kV substation is with 2 busbars made in rigid version, to which are connected 2 line bays, 2 250MVA 400/110/20kV transformer bays, 1 400MVA 400/220/20kV autotransformer bay, 1 bus couplerbay and 2 busbar metering bays. The substation is outdoor type with air insulation.
At the 110kV substation busbars will be connected 13 line bays, 2 250MVA 400/110/20kV transformer bays, 1 bus coupler bay and 2 busbar metering bays.
The 110kV substation has been built in several stages by making a series of temporary works between lines and using 110kV single-phase mobile bays and wires with pre-installed ends.
For the decommissioning of the area required for the 400kV substation, the 220kV line was provisionally connected by means of a mobile bay and a wire connection to the terminals of one of the existing 200MVA - 220/110kV autotransformers. This provisional connection allowed the new 400kV substation to be built.
Refurbishment of the 220/110kV Turnu Severin East substation
Client: Transelectrica
Refurbishment of the 220kV and 110kV substations on the current site without long term disconnection of the existing circuits. The design phases were Technical Design + Specifications.
The connection scheme of the 220kV substation is with 2 block line bays with 200MVA 220/110/20kV autotransformer. The substation is outdoor type with air insulation.
The connection diagram of the 110kV substation is with 2 busbars to which 10 line bays, 2 autotransformer 200MVA 220/110/20kV bays, 1 transformer 20MVA 110/20/6kV bay, 1 transformer 25MVA 110/10/6kV bay, 1 transformer 25MVA 110/20kV bay, 1 bus coupler bay and 2 busbar metering bays and 3 spare bays are connected. The substation is an indoor type with SF6 insulated encapsulated bays.
The refurbishment works were carried out in several stages, starting with the 110 kV substation and continuing with the 220 kV substation.
The solution of building the 110kV GIS substation and the wire connections between the 110kV bays and the frames in the substation for the outgoing lines allowed to keep the existing substation in operation, ensuring the maintenance of the safety level for the National Power System and reducing the duration and number of disruptions of the existing circuits.
Refurbishment of 220/110/20kV Hasdat substation
Client: Transelectrica
Refurbishment of the 220kV and 110kV substations on the current site. The design phases were Feasibility Study and Technical Design + Specifications.
The connection scheme of the 220kV substation is with 2 busbars made in rigid version to which are connected 5 line bays, 2 autotransformer bays of 200MVA 220/110/20kV, a bus coupler bay and 2 busbar metering bays. The substation is outdoor type with air insulation.
The connection scheme of the 110kV substation is with 2 busbars made in flexible version to which 10 line bays, 2 autotransformer bays 200MVA 220/110/20kV, 1 bus coupler bay and 2 busbar metering bays and 3 spare bays are connected. The substation is outdoor type with air insulation.
The refurbishment works are carried out in 4 stages. In the second phase, the construction of temporary connections between the 110kV lines through wire connections, as well as between the 220kV lines, allowed the 220kV and 110kV substations to be taken out of service and the new substations to be built on their respective surfaces.
Refurbishment of the 220kV and 110kV substations on the current site. The design phases were Feasibility Study and Technical Design + Specifications.
The connection scheme of the 220kV substation is with 2 busbars made in rigid version to which are connected 5 line bays, 2 autotransformer bays of 200MVA 220/110/20kV, a bus coupler bay and 2 busbar metering bays. The substation is outdoor type with air insulation.
The connection scheme of the 110kV substation is with 2 busbars made in flexible version to which 10 line bays, 2 autotransformer bays 200MVA 220/110/20kV, 1 bus coupler bay and 2 busbar metering bays and 3 spare bays are connected. The substation is outdoor type with air insulation.
The refurbishment works are carried out in 4 stages. In the second phase, the construction of temporary connections between the 110kV lines through wire connections, as well as between the 220kV lines, allowed the 220kV and 110kV substations to be taken out of service and the new substations to be built on their respective surfaces.
Refurbishment of the 220/100/20kV North Craiova substation
Client: Transelectrica
Refurbishment of the 220kV and 110kV substations on the current site. The design phases were Feasibility Study and Technical Design + Specifications.
The 220kV substation scheme will be with a double system of non-segregated busbars, to which the following will be connected: 5 line cells, 2 autotransformer cells of 200MVA, 220/110kV, 1 bus coupler cell, 2 busbar metering cells, 3 spare cells. The substation will be outdoor type, air insulated, equipped with conventional type equipment.
The scheme of the 110 kV substation will be a double system of non-segregated busbars, to which the following will be connected: 10 line cells, 2 autotransformer cells of 200 MVA, 220/110kV, AT1 and AT2, 1 bus coupler cell, 2 busbar metering cells, 6 back-up cells.
Transformer T3 250MVA in 400/110/20kV substation Sibiu
Client: Transelectrica
The operation consisted in the installation of a 250MVA 400/110kV transformer connected in the 400kV substation in diameter 2, which required the equipping of the middle cell of this diameter and in the 110kV substation in its own cell partially equipped from the initial stage
The connection between the 110kV terminals of the transformer and the 110kV cell was made by 3 single-phase 110kV wires. The control and protection equipment of the 400kV medium cell was upgraded to be compatible with the existing equipment in the installation.
400 kV Isaccea substation refurbishment phase 2
Client: Transelectrica
Construction of the new 110 20 kV substation in Craiova East Industrial Area (DE phase)
Client: SIEMENS / CEZ
Refurbishment of 220/100/20kV Munteni substation
Client: Transelectrica
Refurbishment of the 400/220/110 kV Focsani West substation (DE)
Client: Romelectro / Transelectrica
Refurbishment of 220/110/20kV Hasdat substation (DE)
Client: Siemens / Transelectrica
Refurbishment of the 110kV Timisoara substation and the transition to 400kV voltage of the Portile de Fier-Anina-Resita-Timisoara-Sacalaz-Arad axis. 400kV substation Timisoara (DE)
Client: Romelectro / Transelectrica
Refurbishment of the 400/220/110kV Resita substation
Client: Siemens / Transelectrica
Electrical substations reference works
Framework agreement for the provision of design services Solution Studies for the connection of MV/LV consumers in the Bucharest MV/LV area to the SEN in MV/LV networks
Client: Enel Distributie Muntenia
Framework contract for the elaboration of investment and repair documentation in the distribution network (110 kV, 20 kV, 0 4 kV) for new investment projects (SF, PT, PAC phases)
Client: ELECTRICA SA - SDEE "TRANSILVANIA SUD"
Electrical substations reference works
Switching to 400 kV voltage of the Porțile de Fier-Reșița-Timișoara-Săcălaz-Arad axis, LEA 400 kV Timișoara - Arad stage III
Client: Transelectrica
Switching to double circuit of Isaccea Tulcea 400 kV line
Client: Transelectrica
Power lines reference works
Switching to 400 kV voltage of the Porțile de Fier-Reșița-Timișoara-Săcălaz-Arad axis, LEA 400 kV Timișoara - Arad stage III
Client: Transelectrica
Switching to double circuit of Isaccea Tulcea 400 kV line
Client: Transelectrica
The design theme was to increase the operational reliability of the high voltage power grids in the Tulcea area, namely to increase the transmission capacity of the 400kV Isaccea - Tulcea West LEA.
Two variants were analysed: The first variant meant the transformation of the single circuit LEA into a double circuit LEA, more precisely the realization of a new double circuit 400kV LEA on the same route as the existing one, without any deviation from the current route, in order to minimize as much as possible the necessary land surfaces. The pillars used will be from the Donau range. This option has the advantage of maximising the use of existing land for existing terminals, avoiding the purchase of new land. The site areas of the new pillars are in line with those of the existing pillars, as the site areas of the existing anchored portal type pillars (about 80% of the total number of pillars) are larger than those of the new 400 kV double circuit pillars.
The second option involves the construction of a 400 kV Isaccea - Tulcea West LES with a route of about 32 km, mainly following the national road DN 22 between Isaccea and Tulcea, on its right side starting from Isaccea towards Tulcea. The advantage of this option is that it reduces the number of necessary approvals and agreements, requiring only the acceptance of the road owner CNADR.
Refurbishment of the 110kV LEA in the Giurgiu and Ilfov IT UO
Client: Enel Distributie Muntenia
According to Enel Muntenia's specifications, various types of works are carried out for the 110 kV LEA in Ilfov and Giurgiu counties.
The works mainly consist of replacing the existing insulator chains with composite insulated insulator chains, rebuilding the corrosion protection of the metal columns and repairing as well as waterproofing the foundations.
Topographical measurements are also taken and conductor arrows and dimensions are checked at railway crossings, low voltage LEAs, medium voltage LEAs and roads.
Installation of OPGW on the 220kV Bradu Stuparei line
Client: Transelectrica
The design phases were Technical Design and Execution Details.
Currently in the 1-110 section one of the existing protective conductors is OPGW type, installed about 10 years ago. The second existing classical protective conductor will be replaced with an OPGW type.
Arcing and pull calculations have been done for all existing panels to correlate the newly installed protective conductor with the existing active conductor.
Vibration dampers will be installed for the new OPGW type conductor, and spherical warning beacons will be installed on the protective conductor in the crossing openings over the National Roads and the Olt and Vedea rivers.
Anti-stacking/anti-friction systems will also be installed.
At the 2 end substations, Bradu and Stupărei respectively, OPUG - 36 FO type wire will be installed from the OPGW-OPUG junction boxes to the terminal boxes in the telecommunication rooms.
Relocation of high voltage pylons affected by the construction of the Sebes - Turda motorway
Client: CNAIR
Design and execution of the DN5 link road km. 60+500 - Soseaua de Centura - Prieteniei Bridge km 61+400 - Relocation of 110kV electrical networks.
Client: Elektra Invest / CNAIR
Design and execution of Bucharest Ring Road km 0+000-100+900, Lot 3: Sector 1. Km 85+300-100+765 for South Ring Road; Sector 2. Km 0+000-2+500 for North Ring Road" Relocation of 400kV electrical networks - Client: Elektra Invest / CNAIR
Giurgiu bypass - Relocation of 110kV electrical networks PROTELCO
Client: Protelco / CNAIR
Renewable Energy
Photoelectric power plants reference works:
Owner's Engineer for Onesti Photoelectric Power Plant 18MW
Client: SKYBASE ENERGY
As Owner's Engineer, EDC ensured the adaptation of the project to the Romanian legislation, prepared the execution details, checked the execution of the power plant, provided the institutional consultancy for the application of power and succeeded in eliminating the grid reinforcement tariff from the ATR in the amount of about 3.300.000 euro. We also provided institutional consultancy in relations with Transelectrica, Enel and ANRE.
Design for Calugareni Photoelectric Power Plant 5,5MW
Client: INTO
EDC developed the technical design of the Calugareni 5,5MW Power Plant.
Design for Mischii Photoelectric Power Plant 0,5MW
Client: Electrogrup
EDC provided execution details and as-built documentation for the Photoelectric Power Plant Mischii 0,5MW
Design for Corvin Photoelectric Power Plant 6,4MW
Client: Corvin Photovoltaic
EDC developed the technical solution change of the Corvin 6,4MW Power Plant (technical project), aiming to reach a specific production of more than 1800MWh per year / MW photovoltaic installed. We also provided institutional consultancy in relations with Transelectrica, Enel and ANRE.
Institutional consultancy for Feldioara 4MW Photoelectric Power Plant
Client: Dinoram
We provided institutional consultancy for obtaining the certificate of conformity and the producer's license, having in charge the preparation of the connection to the power supply documentation. Within 30 days from the signing of the contract, we managed to put the power plant under voltage, to perform the compliance tests, to obtain the certificate of compliance and the producer license.
Design for Baile Herculane Photoelectric Power Plant 1,2MW
Client: Electrogrup
EDC provided the execution details and as-built documentation for the Photoelectric Power Plant Baile Herculane 1,2MW
Framework contract for the design of rooftop power plants (more than 15 roof-top power plants)
Client: E-on Technical Services
Design of ground-mounted photoelectric power plants (2 plants)
Client: E-on Technical Services
Design of 1MW rooftop photoelectric power plant
Client: Arcelik (Arctic)
Technical due diligence services for photoelectric projects (2 projects)
Client: WPD / Enel Green Power
Consulting for Huawei inverters accreditation according to Romanian legislation
Client: Wattkraft / ET Solutions / Huawei
Technical and institutional consultancy for Alpha - Giurgiu 45MW, Beta-Izvoarele I 20MW and Gamma Izvoarele 2 45MW photoelectric power plants
Client: LSG / Samsung
Wind power plants
Reference works for wind farms:
Compensation of reactive power of Topliceni Wind Power Plant 10MW
Client: M&M 2008
EDC provided, through a turnkey project, dynamic reactive power compensation using a step adjustable coil system which achieved both a reduction of the reactive power bill by more than 95% and an increase in active power production.
Reactive power compensation of the Grebanu 10MW Wind Power Plant
Client: Eolian Center
EDC provided, through a turnkey project, dynamic reactive power compensation using a step adjustable coil system which achieved both a reduction of the reactive power bill by more than 95% and an increase in active power production.
Obtaining technical compliance Horia Wind Power Plant 7,5MW
Client: Horia Green
EDC has prepared the documentation for the technical compliance of the Horia 7,5MW Wind Power Plant.
Solution study and obtaining ATR without reinforcements for CEE Pestera II 396MW
Client: Radramo Power
Study of solution and obtaining ATR without reinforcements for CEE Fruntiseni 45MW
Client: WPD Romania Wind Farm 08
SMART GRID, SCADA & ITC
SCADA reference works
System Control & Dispatching Company's SCADA system for monitoring and control of Photoelectric and Wind Power Plants and integration with the National Energy Dispatcher
Client: System Control & Dispatching Company
EDC implemented for System Control & Dispatching Company the SCADA system for dispatching more than 20 renewable, photovoltaic and wind power plants with a cumulative installed capacity of more than 300MW, being responsible for the implementation of components related to :
- Design of the Dispatching System Control & Dispatching Company
- SCADA system implementation
- Integration of the communication gateway with the National Energy Dispatcher
- Integration and maintenance of RTU systems in Photoelectric and Wind Power Plants
SCADA system for reactive power compensation and active and reactive power recording of 10 MW Topliceni Wind Power Plant and 10 MW Grebanu CEE
Clients: M&M 2008 and Eolian Center
EDC supplied and implemented in two wind power plants with an installed capacity of 10 MW reactive power compensation systems and active and reactive power setpoints, implementing the following elements:
- Compensation system and SCADA system design.
- Delivery and implementation of equipment and SCADA system
- System integration with System Control & Dispatching Company's SCADA system and Nordex turbine control
- Integration and maintenance of the RTU systems in the Wind Power Plants
SCADA system for monitoring, control and reporting of active and reactive power of the 6.4MW Ghelari Photoelectric Power Plant
Client: Corvin Photovoltaic
EDC supplied and implemented systems for monitoring the orientation of photovoltaic panels, monitoring and control of inverters and transformer substations, reactive power compensation systems and active and reactive power setpoints, implementing the following elements:
- Compensation system and SCADA system design.
- Delivery and implementation of equipment and SCADA system
- System integration with SCADA System Control & Dispatching Company and inverter control systems
- Integration and maintenance of the RTU systems within the PV Plant
ITC reference works
Rehabilitation with the investment component "Remote metering system of the wholesale electricity market" (SF, CS phases)
Client: Transelectrica
EDC carried out the feasibility study and the specifications for the telecontolling system of the wholesale energy market.
System Control & Dispatching Company's communication system with Photoelectric, Wind Power Plants and National Energy Dispatcher. Client: System Control & Dispatching Company
Client: System Control & Dispatching Company
EDC implemented the IP communication and security system with more than 20 renewable, photovoltaic and wind power plants, redundant communication with the National Energy Dispatcher, voice communication system with the zonal dispatchers, being responsible for the implementation of components related to :
- Communication system design
- Implementation of the communication gateway with industrial protocols ModbusTCP, IEC 104, IEC 101 and IEC61850
- Integration of the communication gateway with DEN
- VPN implementation with photovoltaic and wind power plants
- Integration and maintenance of communication systems within CEF and CEE and DLC SC&DC
Communication system of CEE 10 MW Topliceni and CEE 10 MW Grebanu with 110kV/20kV Costieni substation and System Control & Dispatching Company
Clients: M&M 2008 and Eolian Center
Client: System Control & Dispatching Company
EDC implemented for the 10 MW Topliceni and 10 MW Grebanu Wind Power Plants the IP communication and security system with the 110kV/20kV Costieni substation and System Control & Dispatching Company, having the responsibility of implementing the components related to :
- Design of the communication system consisting of 6 ring nodes on optical fiber
- Delivery and implementation of the system using MOXA equipment
- Implementation of the communication gateway with industrial protocols ModbusTCP, IEC 104, IEC 101 and IEC61850
- VPN implementation with Costieni Substation and Dispatcher
- Integration and maintenance of the communication systems within the wind power plants
Communication system of CEF 6.4 MW Ghelari (Corvin Fotovoltaic) with 110kV/20kV Teliuc substation and System Control & Dispatching Company
Client: Corvin Photovoltaic
EDC implemented for the 6.4 MW Ghelari Photoelectric Power Plant (Corvin Fotovoltaic) the IP communications and security system with 110kV/20kV Teliuc substation and DLC, having the responsibility of implementing the components related to :
- Design of the communication system consisting of 8 nodes in a optical fiber ring
- Delivery and implementation of the system using MOXA equipment
- Implementation of the communication gateway with industrial protocols ModbusTCP, IEC 104, IEC 101 and IEC61850
- VPN implementation with Teliuc and DLC substation exchanges
- Integration and maintenance of communication systems within CEE
SMART GRID
SMART GRID reference works
Pilot project - Retrofitting of the 220/110/20kV Alba Iulia substation in digital substation concept.
Client: Transelectrica
Installation of two custrn means of reactive power compensation in 400/220/110/20kV Sibiu Sud and 400/220/110/20kV Bradu substations
Client: Transelectrica
Study on the elaboration of the strategy for the implementation of the Smart Grid concept in CNTEE Transelectrica SA - Roadmap Phase - II
Client: Transelectrica
EDC in collaboration with Nova Industrial provided this study having the responsibility of elaborating the components related to:
- SmartGrid grid architecture identification
- Energy metering methods
- Renewable energy forecasting methods
- Integration and dispatching of renewable energy sources
- Information needed for a renewable energy dispatcher
- Necessary conditions for the realisation of the SmartCity concept
Feasibility study for Smart Grid pilot project - realization of a Smart Grid solution for the use of renewable energy and storage to provide a back-up power supply solution for domestic services - 400/220/110 kV Brazi West substation
Client: Transelectrica
EDC developed this study addressing elements related to:
- Identification of renewable supply solutions.
- Identification of renewable energy storage solutions
- Architecture of the local microgrid command and control system
- Establishing criteria for project generalisation
- Choosing the best solution in terms of economic indicators
- Suggesting the development/implementation directions
Industry
Industry reference works
Construction of 110/10kV power supply substation for Mischii Data Center
Client: Cluster Power
Study of a power supply solution using a Fast Transfer AAR installation
Client: Lukoil
The study analysed the options for supplying vital refinery consumers using Fast Transfer AAR installations.
Synchronization of the new 30MW group on 3 different switches
Client: Lukoil
The PT and DE design phases were carried out for the synchronisation installation of the new 30MW unit. Synchronization can be achieved with control on one of the 3 circuit breakers at different voltage levels, 6kV and 110kV respectively.
Synchronization of the new 30MW group on 3 different switches
Client: Lukoil
The PT and DE design phases were carried out for the synchronisation installation of the new 30MW unit. Synchronization can be achieved with control on one of the 3 circuit breakers at different voltage levels, 6kV and 110kV respectively.
Realization of 110/10kV power supply to Yildiz Entegre factory, Oarja commune
Client: Yildiz Entegre
The work includes the design of the Technical Project, Technical Specifications and Execution Details phases of the electrical connection of the Yildiz factory in Oarja commune, starting with the equipping of a spare cell in the 220/110/20 kV Pitesti Sud substation, continuing with the 110kV wire and then the 110/10kV substation of the Client.
Realization of medium voltage distribution in Yildiz Entegre factory, Oarja commune
Client: Optim Management
The work includes the medium voltage network inside the factory as well as the transformer substations.
110/20kV distribution substation design for the new Arctic factory in Ulmi
Client: Arcelik (Arctic)
Buildings (Commercial, Residential and Offices)
Buildings reference works
Realization of 110/20kV underground electric substation for the extension of the Promenada Mall
Client: Actual Connect / NEPI
EDC carried out the feasibility study, the solution study and the technical design for the extension of the Promenada mall in Bucharest.
Power supply to "The Mark" office building
Client: Actual Connect & S IMMO
EDC is the consultant for the grid connection of The Mark office complex in Bucharest, being in charge of both design documentation and project implementation supervision.
Conventional power generation
Classical power plants reference works
Refurbishment of the 110kV Craiova II Simnic substation
Client: Complexul Energetic Oltenia