Lao People's Democratic Republic Data Collection Survey on Power System Development in Southern Region in Lao PDR Final Report September 2011
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Lao People's Democratic Republic Data Collection Survey on Power System Development in Southern Region Lao PDR Lao People's Democratic Republic Department of Electricity, Ministry of Energy and Mines Electricité du Laos Lao People's Democratic Republic Data Collection Survey on Power System Development in Southern Region in Lao PDR Final Report Final Report September 2011 September 2011 Japan International Cooperation Agency Tokyo Electric Power Company Inc. Tokyo Electric Power Services Co., Ltd. Nippon Koei Co. Ltd. Table of Contents Table of Contents Chapter 1 Policy of the Study .................................................................................................. 1-1 1.1 Objectives and Targets of the Study.................................................................................. 1-1 Chapter 2 Review of PDP2010-2020 ....................................................................................... 2-1 2.1 Demand forecast ............................................................................................................... 2-1 2.2 Power Development Plan.................................................................................................. 2-4 2.3 Power System Development Plan..................................................................................... 2-6 2.4 Power System Analysis................................................................................................... 2-13 Chapter 3 Support from Other Donors .................................................................................. 3-1 3.1 Plan of 230 kV Transmission Line Project between Seno S/S and Saravan S/S............... 3-1 3.2 Support by Other Donors.................................................................................................. 3-1 Chapter 4 Power Demand Forecast......................................................................................... 4-1 4.1 Confirmation of Power Demand Forecast......................................................................... 4-1 4.2 Plan of Southern Mine Development................................................................................ 4-4 4.3 Special Economic Zone (SEZ).......................................................................................... 4-5 4.4 Power Demand Forecast of Each Substation .................................................................... 4-6 4.4.1 Actual Power Demand Record of Each Substation................................................... 4-6 4.4.2 Power Demand Forecast of Each Substation ............................................................ 4-7 Chapter 5 Power Development Plan ....................................................................................... 5-1 5.1 Power Development Plan.................................................................................................. 5-1 5.2 Current Status of M Kaleum Development....................................................................... 5-1 5.3 Interconnection Transmission Lines with Neighboring Countries.................................... 5-5 Chapter 6 Power Development Scenarios............................................................................... 6-1 6.1 Scenarios for the Study ..................................................................................................... 6-1 6.2 Conditions of yearly Supply and Demand Balancing Simulation..................................... 6-1 6.3 Supply and Demand Balancing by Cases.......................................................................... 6-6 6.4 Benefits from Interconnection Transmission Line in the Southern System.................... 6-20 Chapter 7 Power System Issues ............................................................................................... 7-1 7.1 Regional Power Demand and Power Supply Ability ........................................................ 7-1 7.2 Situations of Power Supply and Demand in Target Area.................................................. 7-1 7.3 Methodology of Power Supply to Target Area.................................................................. 7-3 7.4 Role of 500kV/230kV/115kV and Power Supply to SLACO........................................... 7-4 Chapter 8 Scenarios of Power System Plan in South Region................................................ 8-1 8.1 Power Development Scenarios ......................................................................................... 8-1 8.2 Cases of Power Network System Plans ............................................................................ 8-2 Table of Contents 8.3 Study Cases....................................................................................................................... 8-2 8.3.1 Application of Case TA to Case G1 (Construction of the 115 kV Pakbo-Saravan Transmission Line in 2015) ...................................................................................... 8-2 8.3.2 Application of Case TB to Case G1 (Construction of the 230kV Seno-Saravan Transmission Line Instead of the Construction of the 115 kV Pakbo-Saravan Transmission Line in 2015) ...................................................................................... 8-3 8.3.3 Application of Case TA (1) to Case G2 (Construction of 115 kV Pakbo-Saravan Transmission Line in 2015) (Deficit in Power in S1 and S2 in 2015 Eliminated by Supplying via the Transmission Line to SLACO) .................................................... 8-4 8.3.4 Application of Case TA (2) to Case G2 (Construction of 115 kV Pakbo-Saravan Transmission Line in 2015) (Deficit in Power in S1 and S2 in 2015 Eliminated by Supplying via the Interconnection from EGAT)....................................................... 8-6 8.3.5 Application of Case TB (1) to Case G2 (Construction of 230kV Seno-Saravan Transmission Line Instead of Construction of 115 kV Pakbo-Saravan Transmission Line in 2015) (Deficit in Power in S1 and S2 in 2015 Eliminated by Supplying via the Transmission Line to SLACO) ........................................................................... 8-6 8.3.6 Application of Case TB (2) to Case G2 (Construction of 230kV Seno-Saravan Transmission Line Instead of Construction of 115 kV Pakbo-Saravan Transmission Line in 2015) (Deficit in Power in S1 and S2 in 2015 Eliminated by Supplying via the Interconnection from EGAT).............................................................................. 8-7 Chapter 9 Power System Analysis of Central-South Transmission System Development . 9-1 9.1 Conditions for Analysis..................................................................................................... 9-1 9.2 Power Flow Control.......................................................................................................... 9-2 9.3 Power Supply to Taothan Area by 22kV Distribution Line from Saravan S/S ................. 9-3 9.4 Power Flow and Voltage Analysis in the Year 2015.......................................................... 9-4 9.5 Power Flow and Voltage Analysis in the Year 2020.......................................................... 9-9 9.6 Fault Current Calculation................................................................................................ 9-14 9.7 Stability Analysis ............................................................................................................ 9-14 Chapter 10 Candidates of Measures in South 1 Area and Prioritized Project.................... 10-1 10.1 Candidates of Measures in South 1 Area ........................................................................ 10-1 10.2 Power System in Target Area After 2020........................................................................ 10-4 10.3 Comparison between Case TA and Case TB................................................................... 10-5 10.4 The Number of Circuits of the 115 kV Pakbo-Saravan Transmission Line and its Conductors...................................................................................................................... 10-7 Chapter 11 Design Confirmation of the Facilities of the Highest Prioritized Project in Central-South Area................................................................................................11-1 Table of Contents 11.1 Transmission Line Facilities ........................................................................................... 11-1 11.1.1 Present Situation of Transmission Line Route of the Highest Prioritized Project .. 11-1 11.1.2 New Transmission Line Route................................................................................ 11-3 11.1.3 Design of the Transmission Line Facilities............................................................. 11-4 11.1.4 Quantities of Transmission Line Materials ............................................................. 11-5 11.2 Substation Facilities........................................................................................................ 11-7 11.2.1 Pakbo Substation..................................................................................................... 11-7 11.2.2 Taothan Substation.................................................................................................. 11-7 11.2.3 Saravan Substation.................................................................................................. 11-7 11.2.4 Nongdeun Substation.............................................................................................. 11-7 11.3 Implementation Schedule of the