Feasibility Study for the Kosovo B (KS) – Kashar (AL) 400 kV Transmission Interconnection Project
ENERGY SECTOR TECHNICAL ASSISTANCE PROJECT KOSOVO
ESTAP II/1WORLD BANK Grant No. H048
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Overall Objective of Kosovo – Albania 400 kV Interconnection Line
Impact of a strong interconnection between two complementary Kosovo (thermal) and Albanian (predominantly hydro) systems:
Allow for realizing an optimal short-term and medium-term generation
dispatch optimization of the hydrologic and thermal resources;
Improve reliability of electricity supply as a result of increase of
generator availability, decrease of the “power risk” to cover the peak
for the Kosovo and of the “water or energy risk” for Albania.
Reduce the investments in installed generating capacity in both
systems.
Increase exchanges and transactions of electricity on the Region
contributing to the development of the SEEREM
Realize important cost saving in operation through joint and
coordinating operations of both power systems
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Technical Economic Comparison of Alternatives of Kosovo – Albania 400 kV Interconnection Line
Objective of the Study
To perform technical and economic comparison of
all proposed interconnection variants and sub-
variants
To make recommendations regarding the selection of
the preferred variant of 400 kV interconnection line.
The selected variant will be analyzed in detail
during the second phase of the study
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Methodology for the first phase of the project
Least –cost Generation Plan
KOSOVO
Transmission System Master Plan KOSOVO
Export-oriented Generation IPP
KOSOVO
Forecasted Demands KOSOVO
Forecasted Demands ALBANIA
Scenarios of Regional transits
North -South KOSOVO
Least –cost Generation Plan
ALBANIA
Scenarios of Regional transits
East - West KOSOVO
Transmission System Master Plan ALBANIA
Definition of Scenarios of power transfers between KOSOVO - ALBANIA
First phase (3 months) Network studies (L-f, Loadability, TTC and ATC, etc.) for technical
and economical comparison of interconnection Alternatives.
Selection of variant of new 400 kV line between
KOSOVO - ALBANIA
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Review of Electricity Demand and Supply Development
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Development of Electrical Energy Demand Kosovo 2000 - 2020
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Development of Peak System Load Kosovo 2000 - 2020
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Development of Electricity Generation in Kosovo
Analysed Scenarios
Scenario I: LC generation plan from ESTAP I- MGS;
Scenario II: New TPP Kosovo B3 (2012) and B4 (2013);
Scenario III: Rehabilitation of Kosovo A5 (2007), A4 (2008) and A3
(2009) and new TPP Kosovo B3 (2012) and B4 (2013);
Scenario IV: Rehabilitation of Kosovo A5 (2007), A4 (2008) and A3
(2009) and new TPP Kosovo B3 (2012), B4(2013), B5 (2016) and B6
(2017).
Scenario V: New TPP Kosovo B35 (2012) and B45 (2013);
Scenario VI: Rehabilitation of Kosovo A5 (2007), A4 (2008) and A3
(2009) and new TPP Kosovo B35 (2012) and B45 (2013);
Scenario VII: Rehabilitation of Kosovo A5 (2007), A4 (2008) and A3
(2009) and new TPP Kosovo B35 (2012), B45 (2013) and B55 (2016)
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Development of Electricity Generation in Kosovo
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Electrical Energy Balance Scenario IINew TPP 2x340 (no Kosovo A rehabilitation)
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Electrical Energy Balance Scenario IIINew TPP 2x340 and Kosovo A rehabilitation
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Electrical Energy Balance Scenario Scenario VII New TPP 3x500 and Kosovo A rehabilitation
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
ENERGY & PEAK LOAD FORECASTAlbania 2002-2015
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Development of the generationAlbania 2003-2015
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Daily Peak Load of Kosovo & Albanian Power Systems Year 2003
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Review of studies on the SEE Region related to the Project
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Studies on the SEE Region related to the Project
Energy Sector Technical Assistance Project ESTAP, WB study 2002
Albania Energy Sector Study, World Bank Project 2003
Pre-feasibility study report “Interconnection line 400 kV between Kosovo and Albania” 2001
Regional Study on Electricity Supply and Demand in South-East Europe (2002-2012), Decon 2003
Feasibility Study of 400 kV Transmission line Elbasan – Tirana – Podgorica, Fichtner, 2001 (Updated 2003)
Review of Electricity Supply and demand in SEE. EKC Belgrade, 2004
Electricity Supply for Kosovo - Medium to Long Term Strategy, 2001
Kosovo Electric Power System Development Strategy, Energy Strategy and Policy Committee, 2002
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Energy and Peak Load on SEEMontenegro
4,000
4,500
5,000
5,500
2000 2005 2010 2015 2020
Year
GW
h
Montenegro GWh Montenegro GWh Expon. (Montenegro GWh)
Montenegro
700
750
800
850
900
950
2000 2005 2010 2015 2020
Year
MW
Montenegro MW Montenegro MW Expon. (Montenegro MW)
Macedonia
6,000
7,000
8,000
9,000
10,000
11,000
2000 2005 2010 2015 2020Year
GW
h
Macedonia GWh Macedonia GWh Expon. (Macedonia GWh)
Macedonia
0
500
1,000
1,500
2,000
2,500
2000 2005 2010 2015 2020
Year
MW
Macedonia MW Macedonia MW Expon. (Macedonia MW)
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Energy and Peak Load on SEE
Serbia
28,000
29,00030,000
31,00032,000
33,00034,000
35,00036,000
37,000
2000 2005 2010 2015 2020
Year
GW
h
Serbia GWh Serbia GWh
Expon. (Serbia GWh) Expon. (Serbia GWh)
Serbia
5,000
5,100
5,200
5,300
5,400
5,500
5,600
5,700
5,800
5,900
6,000
2000 2005 2010 2015 2020
Year
MW
Serbia MW Serbia MW Expon. (Serbia MW)
Bosnia
10,000
11,000
12,000
13,000
14,000
15,000
16,000
2000 2005 2010 2015 2020Year
GW
h
Bos&Herz GWh Bos&Herz GWh Expon. (Bos&Herz GWh)
Bosnia
1,900
2,000
2,100
2,200
2,300
2,400
2,500
2000 2005 2010 2015 2020
Year
MW
Bos&Herz MW Bos&Herz MW Expon. (Bos&Herz MW)
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
SEE Transmission Network
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
510 MW
Capability of Interconnection Transmission Lines
644 MW
125 MW
250 MW
510 MW
510 MW
1000 MW
1000 MW
510 MW1000MW
125 MW
250 MW
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Natural Power flow circulation on SEE Interconnection Lines Year 2010
220 MW
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
PRESENT SITUATION Energy Transits 2000-2004
880GWh
1,848GWh
2,966GWh
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
PRESENT SITUATION Power Transits 2000-2004
729MW
525MW
823MW
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Review of the exchanges in the period 2000-2003
Main exporters: Bosnia and
Herzegovina, Bulgaria and
Romania
Other countries: net importers
WB study: 4.5 GW capacity
required to meet incremental
demand to 2010 plus
rehabilitation of same order
Capacity deficit in Macedonia,
Montenegro
Summer peak in Greece
Need for new interconnections
Winter balance year 2000 - 2003
-800
-600
-400
-200
0
200
400
600
800
Alb Kos Mon Bos Ser Mac Gre Bul Rom
Power System
MW
2000
2001
2002
2003
Aver
Summer balance year 2000 - 2003
-600
-400
-200
0
200
400
600
800
Alb Kos Mon Bos Ser Mac Gre Bul Rom
Power System
MW
2000
2001
2002
2003
Aver
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V1: The 400 kV interconnection line Kosovo B (KS) – Kashar (Tirana)
Section Kosovo B– Albanian border:
Single circuit 400 kV line
Length 78 km;
Conductors: 2 x 490/65 mm2 ACSR horizontal bundle
78 km
137 k m
K OS OVO B
TIRA NE
215 km
Section Albanian border - Kashar:
Single circuit 400 kV line
Length 137 km;
Conductors: 2 x 490/65 mm2 ACSR horizontal bundle
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V21: The 400 kV interconnection line Peje – Vau Dejes - Kashar (Tirana)
Section Peja– Albanian border:
Single circuit 400 kV line
Length 30 km;
Conductors: 2 x 490/65 mm2 ACSR horizontal bundle
Section Albanian border – Vau Dejes:
Single circuit 400 kV line
Length 85 km;
Conductors: 2 x 490/65 mm2 ACSR horizontal bundle
Section Vau Dejes Kashar:
Double circuit 400 kV line
Length 78 km;
Conductors: 2 x 490/65 mm2 ACSR
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V22: The 400 kV interconnection line Kosovo B – Vau Dejes - Kashar (Tirana)
Section Kosovo B– Albanian border:
Single circuit 400 kV line
Length 75 km;
Conductors: 2 x 490/65 mm2 ACSR horizontal bundle
Section Albanian border – Vau Dejes:
Single circuit 400 kV line
Length 85 km;
Conductors: 2 x 490/65 mm2 ACSR horizontal bundle
Section Vau Dejes Kashar:
Double circuit 400 kV line
Length 78 km;
Conductors: 2 x 490/65 mm2 ACSR
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V23: The 400 kV interconnection line Kosovo B – (Prizren) – Vau Dejes - Kashar (Tirana)
Section Kosovo B– Albanian border:
Single circuit 400 kV line
Length 96 km;
Conductors: 2 x 490/65 mm2 ACSR horizontal bundle
Section Albanian border – Vau Dejes:
Single circuit 400 kV line
Length 85 km;
Conductors: 2 x 490/65 mm2 ACSR horizontal bundle
Section Vau Dejes Kashar:
Double circuit 400 kV line
Length 78 km;
Conductors: 2 x 490/65 mm2 ACSR
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Scenarios of Power Exchanges
Inter-regional, North – South and East – West power exchanges
scenarios have been developed based on investigation of the future
generation development of power systems in SEE Region and
possible future market expectations
Two main Scenarios:
Scenario A: Only natural power-flow circulation.
Scenario B: For each target year a Table of bilateral transactions as
24 h base load:Expected total power transits in 2005 of about 750 MW;Expected total power transits in 2010 of about 1000 MW;Expected total power transits in 2015 of about 1500 MW;Expected total power transits in 2020 of about 3000 MW.
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Transmission Network Model
The northwestern UCTE, CENTREL are represented by an equivalent multipole.
The main 400 kV and 220 (150/110) kV transmission systems of following countries are considered:
Slovenian power system
Croatian power system
Bosnian power system
Serbia power system;
Montenegro power system
Romanian power system
Bulgarian power system
Greek power system
Macedonian power system.
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Interconnection Lines on SEE Region
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Computer model of 400 kV Transmission Network
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Load Model for Multiple Load-Flow Analysis
The shapes of 52 normalized weakly load curves are analyzed and four clusters are individuated
Weekly Load Duration Curves (WLDC)
For each WLDC 30 time intervals with variable length are defined for a approximation
800
900
1,000
1,100
1,200
1,300
1,400
1,500
1,600
1,700
1,800
1,900
2,000
2,100
2,200
2,300
2,400
1 5 9 13 17 21 25 29 33 37 41 45 49 53 57 61 65 69 73 77 81 85 89 93 97 101 105 109 113 117 121 125 129 133 137 141 145 149 153 157 161 165
Cluster 2
Cluster 2 Approximation
Approximation of Weekly Load Duration Curve(Year 2010 Cluster 2)
800
1000
1200
1400
1600
1800
2000
2200
2400
0 20 40 60 80 100 120 140 160
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Definition of Hydro-Thermal Generation Dispatch
Ad-hoc Optimal Dispatch program was set up for Albanian and
Kosovo to calculate scheduled energy production
Technical and security inequality constraints are :Balance of active power;Constraints on active generation of units;Constraints on thermo-power production; Constraints on hydro-power production;
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Evaluation of the Loadability of the new interconnection line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Hourly Power Exchanges between Kosovo-AlbaniaYear 2005
450 MW
520 MW
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Loadability of Interconnection Lines Year 2005
Generation dispatch of thermo-hydro resources is not possible due to network congestions on the region and on interconnection lines of Albania
Power and energy transaction of the third countries in the region have a strong impact on the available transfer capabilities between two power systems.
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Year 2010 Energy Balance in Kosovo & Albania
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Power Exchanges among SEE CountriesWinter 2010
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Hourly Power Exchanges between Kosovo-AlbaniaYear 2010
530 MW
690 MW
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Analyzed Variants of new 400 kV tie-line
Variant 1: 400 kV line Kosovo B – Kashar (route Prishtina – Prizren
– Burrel – Tirana)
Variant V2: 400 kV interconnection line Tirana -- Vau Dejes-
Kosovo:
Sub-variant V21: Peja III – Kashar (route Peja - Deçani - Fierze -
Vau Dejes - Tirana)
Sub-variant V22: Kosovo B – Kashar (route Kosovo B -Morini -
Fierze - Vau Dejes - Tirana)
Sub-variant V23: Kosovo B – Kashar (route Kosovo B –Prizren-
Morini - Fierze - V Deja - Tirana)
Variant V3: The line Skopje (FYROM) - Elbasan (AL)
Variant V4: No new interconnection line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V1 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V21 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V22 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V23 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V3 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V4 Estimated Annual Energy Transfers
Line Overload
Estimated Curtailed Annual Energy not delivered from Kosovo to Albania is 197 GWh due to line overloads
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Year 2010 Comparison of Variants
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Year 2015 Energy Balance in Kosovo & Albania
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Power Exchanges among SEE CountriesSummer 2015
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Hourly Power Exchanges between Kosovo-AlbaniaYear 2015
820 MW
470 MW
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant 1 Energy Transits on Interconnection Lines
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V1 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant 21 Energy Transits on Interconnection Lines
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V21 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V22 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V23 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant 3 Energy Transits on Interconnection Lines
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V3 Estimated Annual Energy Transfers
New Line
Line fully loaded
Pmax = 718 MW
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V4 Estimated Annual Energy Transfers
Estimated Curtailed Annual Energy not delivered from Kosovo to Albania is 1,147 GWh
Line fully loaded
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Year 2015 Comparison of Variants
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Year 2015 Comparison of Variants
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Year 2020 Energy Balance in Kosovo & Albania
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Power Exchanges among SEE CountriesWinter 2020
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Hourly Power Exchanges between Kosovo-AlbaniaYear 2020
930 MW
700 MW
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V1 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V21 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V22 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V23 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V3 Estimated Annual Energy Transfers
New Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Variant V4 Estimated Annual Energy Transfers
Estimated Curtailed Annual Energy not delivered from Kosovo to Albania is 1,716 GWh
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Year 2020 Comparison of Variants
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Period 2010-2020 Comparison of VariantsNew Line Loadability
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Period 2010-2020 Comparison of VariantsRole of New Line in Albania
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Period 2010-2020 Comparison of VariantsRole of New Line in SEE Region
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Steady State Analysis Variant V1 Year 2010
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Determination of Net Transfer Capability between Kosovo & Albania
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Definition of TTC and ATC ETSO definition of the transfer capabilities:
Total Transfer Capacity (TTC)
Net Transfer Capacity (NTC = TTC – TRM)
Available Transfer Capacity (ATC = NTC – AAC)
Transmission Reliability Margin (TRM) and
Already Allocated Capacity (AAC)
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Methodology of Computing NTC Problem : How much incremental power transfer from Kosovo to
Albania will the transmission network of the interconnected system supports given a set of base case network conditions and a set of
contingencies?
Methodology:
Definition of a base case
Base Scheduled Transfers
Specification of contingencies
Determination of network response
Finding of the maximum transfer: a LP optimization problem formulation using the Power Transfer Distribution Factors (PTDF) is applied to determine the maximum transfer that satisfies the thermal criteria.
Post-processing and determination of TRM
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Methodology of Computing NTC
Definition of a base case. It consists in forecasted condition and
planned configuration of the network.
Base Scheduled Transfers
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Year 2010 V4 Power Flow Distribution Factors
100
100
33
34
15
15
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Year 2010 V1 Power Flow Distribution Factors
100
100
21
21
9
9
38
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Total and Net Transfer CapabilitiesYear 2005 and 2010
Reduction of NTC
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Total and Net Transfer CapabilitiesYear 2015 and 2020
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Ranking of Variants according to NTC
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Cost Estimation of Interconnection 400 kV Line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Cost Estimation of 400 kV Line
The capital costs of the project comprise:
Cost of equipment and components related with manufacture,
transport to site and local transport. For line are included the
cost of conductors, shield wires, towers, insulators strings,
accessories, etc. For the line bays are included costs of circuit
breakers, disconnecting switches, busbars, accessories, etc.
Civil works necessary for construction of the line or substation,
such as access roads, foundations, buildings and related works.
Costs for erection and installation and commissioning.
Costs necessary for land acquisition, Right-of-Way (R.O.W) and
compensation.
Costs related with preparatory works necessary for the line and
substation construction and operation.
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Estimated Total Cost of Variants
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Economic evaluation of different Variants
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Criteria and assumption for economic evaluation
The minimum NPV method is applied considering:
The annuity of the investment cost of the new line;
Amount of fixed O & M costs of the new added facilities;
The annual benefits resulting from its integration in the system.
Annual benefits directly attributed to introduction of the new line :
Without the new interconnection (Variant V4);
With the new interconnection (Variant V1 – V3).
Benefit on transmission losses
Energy Losses
Power Losses
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Criteria and assumption for economic evaluation
Benefit on transmission losses
Energy Losses
Power Losses
Benefit from CB Trade
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
NPV of different Variants of the new 400 kV line
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Technical Economic comparison of all alternatives
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Methodology for Technical-Economic comparison
The following technical performance indicators are considered
Loadability Volume of annual electric Energy Exchanges realized
through new line: EE (GWh). Volume of annual electric Energy Wheeling realized
through new line: EW (GWh). Volume of annual electric Energy transmitted by new line:
annual Load Factor (%) of the line.
Transfer Capability NTC index (MW)
Energy Losses Annual Reduction of Energy Losses ELR
Transmission Network Performance
Environmental Impact
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Ranking of Variants of the new 400 kV line according to EE index
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Ranking of Variants of the new 400 kV line according to EW index
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Ranking of Variants of the new 400 kV line according to LF index
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Ranking of Variants of the new 400 kV line according to NTC index
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Ranking of Variants of the new 400 kV line according to EL Reduction index
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
Conclusions & Recommendation
The final ranking of the variants based on overall evaluation of technical and economic indicators is as follows:
Variant V22 Kosovo B (KS) – Kashar (AL);
Variant V1 Kosovo B (KS) – Kashar (AL);
Variant V23 Kosovo B (KS) – Kashar (AL);
Variant V21 Peja 400 (KS) – Kashar (AL);
Variant V3 Skopje 400 (FYROM) - Elbasan 400 (AL)
The variant V4, no new line is technically not feasible.
We recommend the Variant V22: a new 400 kV line from Kosovo B(KS) to Kashar (AL) (via Vau Dejes)as the most advantageous Variant. It represents the best combination of technical indicators and economical ones.
Pristine, 21-22 February 2005 – ESTAP II/1 SC-2Technical Economic Comparison of Alternative
V22 Variant