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2010
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Technical parameters Calculation software for 2009/2010 SEE Dry-run of Coordinated flow-based Auctions
for: KfW bank, Germany
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SERBIA: Power Network Analysis for Wind Power Integration
for: EMS, Serbia
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New interconnection line among Serbia and Montenegro (Improvement of transmission capability at the north-south corridor)
for: Terna, Italy
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Connection of switching station 20/110 kV Sastavci to the transmission network of Bosnia and Herzegovina
for: Hydroenergy, Gacko and Drina Hydroenergy, Ugljevik, BiH
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Evolution of the Serbian electricity market and the long term market price projections in period 2010-2030
for: Edison, Italy
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Western Serbia – 400kV Transmission System Upgrade – IPF WB Energy – Serbia – TA-SER-26
for: WYG UK, EMS Serbia
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Development of transmission and distribution network of Podgorica till 2025
for: EPCG, Montenegro
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Development of transmission and distribution network of Niksic till 2025
for: EPCG, Montenegro
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Prefeasibility study for technical solution of connection of wind farms (72MW) to the EPS of Montenegro
for: Ivicom Consulting, Austria
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Connection of HPP Dub and HPP Ustipraca (22 MVA) to the EPS of Bosnia and Herzegovina
for: Hidroinvest Rogatica, Bosnia and Herzegovina
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Connection of HPP Ulog (40 MVA) to the EPS of Bosnia and Herzegovina
for: EFT Group, HE Ulog Kalinovik, Bosnia and Herzegovina
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Prefeasibility Study For Technical Solution of Connection of HPPs (51MW) of KELAG Montenegro Company to The EPS of Montenegro
for: Kelag Podgorica, Montenegro
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Cost/Benefit Analysis of the Proposed Solution of Connection of 220/110 kV SS Bistrica (150 MVA) into Serbian Grid
for: MVV decon, Germany
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Prototype of Service platform for Regional Balancing Market Balance Energy Tool for South East Europe
Prototype (BETSEE), Upgrade project
for: SETSO SG, Energy Community Secretariat
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Technical parameters Calculation software for 2009/2010 SEE Dry-run of Coordinated flow-based Auctions
for: KfW bank, Germany
type: Project (software)
finishing date: March 2011
team: Z. Vujasinovic - Project leader, N. Jović, S. Mijailović, Dj. Dobrijević, М. Čokorilo
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The extension of Merlin/PSA softwares for Technical Parameters Calculation for dry-run of flow-based Coordinated Auctions in South-east Europe, covering the needs of SEE TSOs.
The following activities have been performed:
· Applying the new definitions of MF values, as in updated Consultants report
· New principles for Outside Flows (BFRM) calculation
· Automatic post-auction contingency analysis
· Function for calculation of generator’s outages influence
· OTDF usage for CB/CO list creation
· Generation Shift Key editor
· Loading Factors |
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SERBIA: Power Network Analysis for Wind Power Integration
for: EMS, Serbia
type: Study
finishing date: August 2010
team: Dj. Dobrijevic – Project leader, M. Vukovic and P. Miksa – consultants, M. Čokorilo, N. Jovic, T. Martinovic, A. Oros |
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In this study analyses of integration of wind power plants and their influence in electric power system of Serbia have been performed. Time horizon is year 2015. Wind power plant projects included in this analysis are those projects which are at least initially permitted by EMS and following analyses have been performed:
• Review of wind power plant projects;
• Review of current control practice and Grid code of Serbia
• Analysis of wind penetration in the electric power system of Serbia for current topology as well as for expected (real) topology in 2015;
- Load flow analysis
- Voltage profile analysis
- Contingency (n-1) analysis
- Detection of "bottlenecks"
• Analysis of frequency control and active power control;
• Identification of any limitations on wind power plant penetration.
The main result of the study is proposal of necessary network reinforcements (in order to make transmission system to be able to accept analyzed wind penetration) as well as proposal of criteria for connection of wind power plants to transmission network.
In addition, the goal is to make definition and assessment of additional costs associated with increasing levels of wind energy has been made. These additional costs should cover the costs of extra reserve, reduced load factors on the thermal and/or hydro plants, modifications to network components, network reinforcements…
The following activities have been performed:
· Estimation of maximal wind penetration in the EPS of Serbia
· Load flow analysis
· Voltage profile analysis
· Analysis of losses
· Contingency (n-1) analysis
· Detection of "bottlenecks"
· Network reinforcements
· Frequency regulation and active power control
· Proposal of criteria for connection of wind power plants
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New interconnection line among Serbia and Montenegro (Improvement of transmission capability at the north-south corridor)
for: Terna, Italy
type: Study
finishing date: July 2010
team: Z. Vujasinović – Project leader, M. Vuković and S. Mijailović – Consultants, T. Martinović, M. Čokorilo, A. Oros, B. Šijaković |
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Еxamination of the effects and possibilities of the construction of 400 kV line between the power systems of Montenegro and Serbia, 400 kV line B. Basta – Pljevlja, considering all possible grid reinforcements.
The following activities have been performed:
· Analysis and definition of the appropriate configuration for the construction of The New Interconnection taking into account the topology scenarios and future development of transmission network in Serbia, Montenegro and other power systems
· Assessment of the additional Net Transfer Capacities between Serbia and Montenegro contributed by the construction of the New Interconnection, also in light of electricity exchanges between Italy
· Estimation of Capital (CAPEX) and Operational Expenditures (OPEX) volumes associated to the new interconnection realisation
· Authorization framework in concerned countries and the Environmental Framework in which the New Interconnection line will be realised. |
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Connection of switching station 20/110 kV Sastavci to the transmission network of Bosnia and Herzegovina
for: Hydroenergy, Gacko and Drina Hydroenergy, Ugljevik, BiH
type: Project Analysis
finishing date: May 2010
team: M. Čokorilo - Project leader, M. Vuković and S. Marković – Consultants, A. Oros, N. Jović, B. Šijaković |
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Objective of the Study is connection of 6 new small hydro power plants in Tjentiste region (estimated total power 19.15 MW) to the transmission network of Bosnia and Herzegovina, through switching station 20/110 kV Sastavci, taking into consideration transmission development plans of 400, 220 and 110 kV network until 2011. In accordance to that all analyses were performed for that year.
Study of technical solutions for the connection switching station 20/110 kV Sastavci, is made from the aspect of electricity evacuation to the EES BiH, taking in consideration security criteria and respecting the criteria of least cost for building the connections.
Switching station will be connected to the transmission network through a 110 kV OHL two different variants were analyzed for the connection to the transmission network:
1. connection with double 110 kV OHL to SS Gacko
2. connection with single 110 kV OHL to SS Gacko.
Load flow, voltage profile analyzes and assessments of investment costs were performed for each variant, based on the proposed potential variants. In other words, the proposal that meet both the technical requirements of connecting and low investments is given. On the basis of the proposed variant, parameters of block transformer (power, ratio, regulation) and generator power factor are defined. Calculation results pointed out the value of short circuit in internal 20 kV network and its impact on existing and new equipment in connection point.
Static stability analyses (for small disturbances) have been performed with analysis of eigenvalues. As a result of the analysis of the stability for small disturbances, Study has provided the basic parameters of generators and block-transformer on the connection site, as well as the estimation of static stability and the possibility of synchronization power in the expected conditions.
The following activities have been performed:
· Definition of parameters of block transformer (power, ratio, regulation)
· Load flow and voltage profile calculations
· Static security analyses
· Techno-economical aspects
· Short circuit analyses according to IEC 60909
· Static stability analyses. |
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Evolution of the Serbian electricity market and the long term market price projections in period 2010-2030
for: Edison, Italy
type: Study
finishing date: March 2010
team: Z.Vujasinović – Project leader, M. Vukovic and S. Mijailovic – consultants, T.Martinović, М. Čokorilo, B. Šijaković |
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The objective of this study is to analyze different scenarios of electricity balance in Serbia, electricity market development and a forecast of the Serbian market price, and to obtain a model for sensitivity analysis of the Serbian market price varying different external commodities scenarios in input. Specific tasks:
1. The demand and supply side projections (2010-2030),
2. Power plants economical merit order lists
3. The electricity surplus/deficit analysis
4. The cross-border capacity allocation perspective
5. Current regulatory framework and evaluation review
6. Long term price scenarios
The following activities have been performed:
· The demand and supply side projections (2010-2030)
· The electricity surplus/deficit analysis
· Reference market price
· Study report
· Model (Excel) |
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Western Serbia – 400kV Transmission System Upgrade – IPF WB Energy – Serbia – TA-SER-26
for: WYG UK, EMS Serbia
type: Pre-feasibility study
finishing date: March 2010
team: P.Mikša – transmission engineer, S.Marković – system analyst |
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Currently, the transmission system in Western Serbia especially, has inadequate capacity and equipment is very old. This adversely affects both energy imports and regional transit capacity in the Serbian network. Reconstruction of this part of the network is necessary, and upgrade to 400kV voltage level is best solution. Object of this prefeasibility study is to investigate possible options to realize this system upgrade till 2015 with network development vision till 2025.
The following activities have been performed:
· Data collection and analyses
· Consumption analyses and forecast
· Load flow analyses
· Voltage profile and reactive power analyses
· Fault analyses
· Economical appraisal
· Network development plan |
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Development of transmission and distribution network of Podgorica till 2025
for: EPCG, Montenegro
type: Study
finishing date: March 2010
team: P. Mikša - Project leader, T. Martinović, A. Oros |
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The scope of project is detailed analysis of existing and planned state of transmission and distribution network, existing development plans of city of Podgorica, and to make a plan for transmission and distribution network development of 110 kV, 35 kV and 10 kV voltage levels. Long-term development plans should enable continuous demographic, industrial and economic development in areas of the municipality Podgorica.
The study covers the period by year 2025, the promising network is analyzed and elaborated in five-year stages 2015-2020-2025, a detailed development plan for the next five years (2010-2014), and a vision of further development of the network by 2025.
Development planning of transmission and distribution power system in areas of the municipality of Podgorica is connected with a series of difficulties, the presumed development load, analysis of the possible state of the network and its forms of exploitation, which should provide:
- the needs of end consumers are regularly, reliably and securely covered
- delivered electricity should meet the quality requirements which are increasing every day
- that the total price of the distributed electricity is minimized
Such a task can be solved in multiple ways, with constant present dilemma, that if the future development is exactly anticipated. However, instead of questioning is the future accurately perceived, should strive to have it builds in accordance with the present predictions.
The following activities have been performed:
· Data collection and analyses
· Consumption analyses and forecast
· Load flow analyses
· Voltage profile and reactive power analyses
· Fault analyses
· Economical appraisal
· Network development plan |
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Development of transmission and distribution network of Niksic till 2025
for: EPCG, Montenegro
type: Study
finishing date: March 2010
team: P. Mikša - Project leader, N. Jović, М. Čokorilo |
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The scope of project is detailed analysis of existing and planned state of transmission and distribution network, existing development plans of city of Niksic, and to make a plan for transmission and distribution network development of 110 kV, 35 kV and 10 kV voltage levels. Long-term development plans should enable continuous demographic, industrial and economic development in areas of the municipality Niksic.
The study covers the period by year 2025, the promising network is analyzed and elaborated in five-year stages 2015-2020-2025, a detailed development plan for the next five years (2010-2014), and a vision of further development of the network by 2025.
Development planning of transmission and distribution power system in areas of the municipality of Niksic is connected with a series of difficulties, the presumed development load, analysis of the possible state of the network and its forms of exploitation, which should provide:
- the needs of end consumers are regularly, reliably and securely covered
- delivered electricity should meet the quality requirements which are increasing every day
- that the total price of the distributed electricity is minimized
Such a task can be solved in multiple ways, with constant present dilemma, that if the future development is exactly anticipated. However, instead of questioning is the future accurately perceived, should strive to have it builds in accordance with the present predictions.
The following activities have been performed:
· Data collection and analyses
· Consumption analyses and forecast
· Load flow analyses
· Voltage profile and reactive power analyses
· Fault analyses
· Economical appraisal
· Network development plan |
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Prefeasibility study for technical solution of connection of wind farms (72MW) to the EPS of Montenegro
for: Ivicom Consulting, Austria
type: Pre-feasibility study
finishing date: January 2010
team: S. Markovic - Project leader, M.Vukovic - consultant, N.Jovic, A. Oros |
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Objective of the Pre-feasibility study is realization of first phase of connection of wind farms (WF) in Niksic area, with a power of 72MW, to the transmission network of Montenegro, taking into consideration transmission development plans of 400, 220 and 110kV network until 2014.
The study answers and give evidence, using a model calculation, under which conditions it is possible to install, operate with and connect objected wind farms to the transmission network of Montenegro in Krnovo site. Two connection variants have been analyzed.
Taking into consideration the lack of space in existing SS Niksic (currently, there is not enough space for more than one bay), for one of the variant, as a starting point for analysis, new substation Ozrinići near Niksic on 110 kV voltage level was considered.
Power plants will be connected to the transmission network on one of the following ways:
1. Connection to new SS 110 kV Ozrinici through two 110kV OHLs
2. Connection to SS Brezna through one 110kV OHL and to SS Niksic through one 110kV OHL
For Variant 2 existing SS Brezna is necessary to be in operation on 110 kV (currently operate under 35 kV voltage level). For each variant load flow, voltage profile analyzes (including static security analysis) and assessments of investment costs were performed, based on which the potential variant is proposed. In other words, the proposal that meet both, the technical requirements of connecting and low investments, is given. For all variants short circuit calculations have been performed, where results pointed out to a certain level of increase in the value of short circuit and their impact on existing and new equipment of lines and transformer stations.
Instalation of “phase shift” transformer in HPP Perucica and its influence on load flows through transmission network of EPS of Montenegro was also analyzed. Results have shown that “phase shift” transformers installation in HPP Perucica enable realization of second phase of wind farms in Krnovo site, with total capacity 139.2MW (72+67.2MW).
The following activities have been performed:
· Load flow and voltage profile studies
· (n-1) static security analysis
· Techno-economical aspects
· Short circuit analyses according to IEC 60909
· Installation of “phase shift” transformers in HPP Perucica and its influence on second phase installation of WFs in Krnovo location |
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Connection of HPP Dub and HPP Ustipraca (22 MVA) to the EPS of Bosnia and Herzegovina
for: Hidroinvest Rogatica, Bosnia and Herzegovina
type: Project Analysis
finishing date: January 2010
team: S. Markovic - Project leader, M.Vukovic - consultant, M.Cokorilo, Dj.Dobrijevic, N.Jovic, A. Oros |
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Objective of the Study is connection of new small hydro power plants HPP Dub and HPP Ustipraca (estimated power 20MW) to the transmission network of Bosnia and Herzegovina, taking into consideration transmission development plans of 400, 220 and 110kV network until 2011 and 2013. Objected hydro power plants (HPP Dub 2x6MVA and HPP Ustipraca 2x5MVA) shall be put into operation in two stages, during 2011 and 2013. In accordance to that all analyses were performed for those two years.
Study of technical solutions and connections hydropower plants Dub and Ustipraca, located on Praca River, is made from the aspect of marketing strength and electricity in EES BH, security and respecting the criteria of least cost of building connections. Power plants will be connected to the transmission network through a common SS 110/10kV Dub.
There were analyzed three different variants of connection to the transmission network:
1. connection to the existing 110 kV OHL Visegrad - Gorazde 2 by input / output principle
2. connecting to the 110kV network with a double (on the same tower) 110kV OHLs to the SS Gorazde 2
3. connecting to the 110kV network with one 110kV OHL to the SS Gorazde 2
For each variant, load flow, voltage profile analyzes and assessments of investment costs were performed, based on which the potential variant is proposed. In other words, the proposal that meet both, the technical requirements of connecting and low investments, is given. On the basis of the proposed variant, parameters of block transformer (power, ratio, regulation) and generator power factor are defined. Calculation results pointed out to a certain level of increase in the value of short circuit and their impact on existing and new equipment of lines and transformer stations.
Static stability analyses (for small disturbances) have been performed with analysis of eigenvalues. As a result of the analysis of the stability of small disturbances, Study has provided the basic parameters of generators and block -transformer on the site of connection and an estimation of static stability and the possibility of synchronization power in the expected conditions is given.
The following activities have been performed:
· Definition of parameters of block transformer (power, ratio, regulation) and generator power factor
· Load flow and voltage profile studies
· Static security analyses
· Techno-economical aspects
· Short circuit analyses according to IEC 60909
· Auxiliary supply analyses
· Static stability analyses |
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Connection of HPP Ulog (40 MVA) to the EPS of Bosnia and Herzegovina
for: EFT Group, HE Ulog Kalinovik, Bosnia and Herzegovina
type: Study
finishing date: January 2010
team: S. Markovic - Project leader, M.Vukovic - consultant, M.Cokorilo, Dj.Dobrijevic, N.Jovic |
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Objective of the Study is connection of new hydro power plant HPP Ulog (estimated power 40MVA) to the transmission network of Bosnia and Herzegovina, taking into consideration transmission development plans of 400, 220 and 110 kV network until 2014.
Study of technical solutions and connections hydropower plant Ulog, located on Neretva River, is made from the aspect of marketing strength and electricity in EES BH, security and respecting the criteria of least cost of building connections.
Power plant will be connected to the transmission network through 110 kV OHLs where three different variants of connection were analyzed:
1. connection to the existing 110 kV OHL Sarajevo - Foca by input / output principle
2. connection to the planned 110 kV OHL Nevesinje - Gacko by input / output principle
3. connection to the new 110 kV OHL Konjic - Foca by input / output principle
For each variant load flow, voltage profile analyzes and assessments of investment costs were performed, based on which the potential variant is proposed. In other words, the proposal that meet both, the technical requirements of connecting and low investments, is given.
On the basis of the proposed variant, parameters of block transformer (power, ratio, regulation) and generator power factor are defined.
Calculation results pointed out to a certain level of increase in the value of short circuit and their impact on existing and new equipment of lines and transformer stations.
Static stability analyses for all variants (for small disturbances) have been performed through analysis of Eigen-values. As a result of the analysis of the stability of small disturbances, Study has provided the basic parameters of generators and block -transformer on the site of connection and an estimation of static stability and the possibility of synchronization power in the expected conditions is given.
The following activities have been performed:
· Definition of parameters of block transformer (power, ratio, regulation) and generator power factor
· Load flow and voltage profile studies
· Static security analyses
· Techno-economical aspects
· Short circuit analyses according to IEC 60909
· Auxiliary supply analyses
· Static stability analyses |
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Prefeasibility Study For Technical Solution of Connection of HPPs (51MW) of KELAG Montenegro Company to The EPS of Montenegro
for: Kelag Podgorica, Montenegro
type: Pre-feasibility Study
finishing date: January 2010
team: S. Markovic - Project leader, M.Vukovic - consultant, Dj.Dobrijevic, N.Jovic, A.Oros, B.Sijakovic |
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Objective of the Study is connection of new small hydro power plants HPP Pluzine 21MW (HPP Stabna 7.4MW, HPP Jasen 10MW and HPP Vrbnica - 3.5MW) and HPP Savnik 30MW (HPP Savnik -15.8MW, HPP Podmalinsko - 5.7MW, HPP Boan - 6.7MW, and HPP Sirovac - 1.7MW), to the transmission network of Montenegro, taking into consideration transmission development plans of 400, 220 and 110 kV network until 2013/2014. Prefeasibility Study of technical solutions and connections of hydropower plants HPP Savnik and HPP Pluzine, located in Pluzine and Savnik municipalities, is made from the aspect of marketing strength and electricity in Montenegro, security and respecting the criteria of least cost of building connections.
Bearing in mind that in the vicinity of objected power plants there are no substations on 400, 220 or 110kV voltage level, it was investigated several variants of connecting, where is assumed that the SS 110/35kV Brezna and SS 110/35kV Pljevlja are already built before entering objected power plants into operation. The following variants have been considered:
1. Connection of HPP Pluzine and HPP Savnik on SS 110/35kV Brezna with 110kV OHLs
2. Connection of HPP Pluzine on SS 110/35kV Brezna and HPP Savnik on 110/35kV SS Pljevlja with one 110kV OHL
3. Connection of HPP Pluzine to SS 110/35kV Brezna and to SS 110/35kV Pluzine with 110kV OHLs and connection of HPP Savnik to SS Brezna with 110kV OHL
4. Connection of HPP Pluzine to SS 110/35kV Brezna and to SS 110/3 kV Pluzine with 110kV OHLs and connection of HPP Savnik to SS Pljevlja with 110kV OHL
5. Connection of HPP Pluzine to SS Brezna with one 110kV OHL and connection of HPP Savnik to SS Zabljak and to SS Brezna with 110kV OHLs
For Variants 3 and Variant 4 new SS 110/35kV Pluzine is necessary to be in operation. For each variant load flow analyses, voltage profile analyses (including static security analysis) and assessments of investment costs were performed, based on which the potential variant is proposed. In other words, the proposal that meet both, the technical requirements of connecting and low investments, is given. For all variants short circuit calculations have been performed, where results pointed out to a certain level of increase in the value of short circuit and their impact on existing and new equipment of lines and substations.
The following activities have been performed:
· Load flow and voltage profile studies
· (n-1) static security analysis
· Techno-economical aspects
· Short circuit analyses according to IEC 60909 |
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Cost/Benefit Analysis of the Proposed Solution of Connection of 220/110 kV SS Bistrica (150 MVA) into Serbian Grid
for: MVV decon, Germany
type: Study
finishing date: January 2010
team: N. Jovic - Project leader, M. Vukovic - consultant, Dj. Dobrijevic |
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Purpose of this Cost/Benefit Analysis is to prove integrity of the new substation 220/110 kV Bistrica (150 MVA) construction from the network improvements point of view and also from profitability of investment point of view by evaluation of future benefits which can be expressed as potential income.
In order to examine network improvements, following analyses are performed for each characteristic scenario without and with SS 220/110 kV Bistrica in operation:
- Network security, reliability and quality of power supply assessment
- Determination of power losses in transmission network
- Elimination of existing firm connection in the network.
Results derived from these analyses are being compared in order to fully examine all potential advantages or disadvantages caused by observed substation operation.
Economic analysis of the project investment efficiency is performed in order to determine economic profitability of investment and project capability as an independent economic entity to settle its liabilities against creditors, employees and the community from its own ongoing business operations. For that purpose financial evaluation is performed in order to derive economic efficiency indices based on estimated costs and benefits of the investment program related to the construction of the substation Bistrica.
The following activities have been performed:
· Load flow analyses
· Voltage profile analyses
· Network security assessment
· Investment analyses
· Cost/Benefit analyses |
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Prototype of Service platform for Regional Balancing Market Balance Energy Tool for South East Europe_prototype (BETSEE)
Upgrade project
for: SETSO SG, Energy Community Secretariat
type: project
finishing date: January 2010
team: Z.Vujasinović – project leader, T.Martinović, Lj.Knežević (EPCG), Z.Rudić, J. Đorđević (EMS) |
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The objective of the BETSEE upgrade project is to improve the operability and user friendliness of the BETSEE prototype platform. Successful accomplishment of works will be checked by the BETSEE second Dry Run.
TASKS
i. Separate list per TSO with pre-calculated results for all possible requests
ii. Enhanced time dimension: separate hourly resolution and flexible products
iii. Security
iv. Switching to server-client configuration
DELIVERABLES
- Final Report
- Installation
- Documentations
- Source version - sealed and given to the EnCS
- Training of the BM SG participants,
- Trial run and hosting of the platform in duration of 12 months after the time of delivery.
The following activities have been performed:
· Software delivery
· Training
· Trial run
· Platform hosting |
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