老挝电力发展规划-现状

Part I

Present Status

Generation Facilities

1.1 Existing

The generation Source Development in Lao PDR has been continuously developed together with the increasing demand of electricity in the period 2005-2009, the total installed capacity as of December 2005 was 670.8 MW (excluding off-grid system), of which 308.7 MW is owned by EDL while 362.1 MW is owned by Independent Power Producers for exporting power to neighboring countries, IPP(e)1. The growth rate of the installed capacity in the period 2008-2009 was 172%. The historical trend of the installed capacity of Hydropower plants are shown in Figure 1.1-1 below.

Figure 1.1-1: Historical trend of the installed capacity.

At present, the existing transmission system in side the country was not yet linked together. The total installed capacity as of December 2009 was 1,826.8 MW, all from Hydropower plants. The dramatically increase with the capacity of 1,156 MW in 2009 mainly from Xeset 2 (76 MW) and Nam Theun 2 (1,080 MW) hydropower plants. Of which 20.9% of capacity is owned by EDL and 78.9% are IPP(e). The existing hydropower plants of EDL and IPP(e) are listed in the Table 1.1-1, Appendix 1 and Figure 1.1-2 below.

1

Theun Hinboun HPP (210MW) and Houay Ho HPP (152.1 MW) and Nam Theun 2 HPP (1080MW)

Figure 1.1-2: The existing installed capacity of hydropower plants as of December 2009.

Figure 1.1-3: The existing hydropower plants in Lao PDR.

1.2 Transmission Line and Substation Facilities

At Present, the high voltage transmission system (115 kV) was already linked between Central and

Northern areas in 2009 while Central and Southern link is under construction and expected to be

completed during 2010-2011. Details of the existing transmission system in Lao PDR are shown in

Figure 1.2-1, Appendix 1, and Figure 1.2-2 below.

Nam Ngum 1 hydropower plant

Xeset 2 hydropower plant Xeset 1 hydropower plant

Figure 1.2-3: The existing transmission system and substations in Lao PDR.

1.2.1 Northern Area

The existing 115kV transmission line in the Northern area is interconnected with China system by single circuit of 115kV transmission line from Namo substation, Oudomxay province (Lao PDR) – Meung La substation (China) in 2009, Refer to Power Purchase Agreement (PPA) signed between EDL and China, EDL was allowed to imports power at this point with maximum 30MW. The power distribution in this area is delivered through various 115/22kV substations such as: Luang Namtha 1, Oudomxai, Luang Prabang 1, Pakmong, Sayabuly and some parts is delivered through imports power from Provincial Electricity Authority of Thailand (PEA) via the 22kV distribution line. As of December 2009, the existing 115/22kV substations in this area consist of 6 locations with the total installed capacity of 107 MVA (as seen in the Table 1.2-1, Appendix 1). The total length of the 115kV transmission lines is totally 594.5 cct-km (as seen in Table 1.2-2, Appendix 1).

1.2.2 Central Area

The high voltage transmission systems in this area are connected with three (3) major hydropower

plants namely Nam Ngum 1 (155 MW), Nam Leuk (60 MW) and Nam Mang 3 (40 MW). These plants are supplied electric energy mainly to Central area and some parts of Northern area. The power distribution in the Vientiane Capital is delivered through various 115/22kV substations (Phonetong, Naxaythong, Tha Ngon, Khoksa ad, and Thanaleng), Vientiane province is delivered

through 115/22kV substations (Phonsoung, Thalat, Bandon, Nonhai, Nam Ngum1, Nam Leuk, Nam Mang 3 and Vangvieng), Bolikhamxai province is delivered through 115/22kV Pakxan

substation, and Xiengkhuang is delivered through 115/22kV Phonsavan substation. As of

Substation Control Room 115kV Transmission Line