500Kv Transmission Line Construction Project in Java‐Bali (Klaten‐Tasikmalaya‐Depok Iii)

500KV TRANSMISSION LINE CONSTRUCTION PROJECT IN JAVA‐BALI (KLATEN‐TASIKMALAYA‐DEPOK III)

Country Republic of Indonesia

Location Central Java and West Java

Client P. T. PLN (PERSERO)

Financial Sources Japan Bank for International Cooperation (JBIC), Japan

Period of Services December 1999 to May 2006

Description of the Project 500 kV transmission line in the Java‐Bali power system spans between Paiton Coal‐fired Power Plant at the eastern part and Suralaya Coal‐fired Power Plant at the western part through several 500 kV substations located at the northern part of the island and was known as the North Route of 500 kV system. To anticipate the high demand growth in the Java‐Bali power system, it has been planned to develop some large scale power plants in the power system through IPP, but unfortunately, those power plants are to be located at the eastern part of the island while the load centers are mainly concentrated in the western part. This phenomena results in the necessity of constructing new double circuit 500 kV transmission lines since the existing 500 kV North Route cannot be relied on evacuating the power from the eastern part to the western part due to the limitation of power transfer capability of the conductor. Besides, a densely populated areas of the North Route cause difficulties of having a right of way for new 500 kV transmission lines and the need of bulk power supply in the near future exists in the southern towns of East Java, Central Java and West Java of the island. For these reasons, PLN has planned to construct another double circuit West‐East 500 kV transmission line in the power system taking the route of the southern part of the island called the South Route of 500 kV system.

Scope of Services Construction supervision and project management Tower Erection Work of 500 kV Transmission Line Construction services Project in Java‐Bali

Main Features of the Project Transmission Line 579 km double circuit 500 kV overhead lines, Klaten‐Tasikmalaya‐Depok III Substation 500 kV at Depok III 1 diameter with 3 x 500 kV CB (T/L & T/R Bay) 2 diameters with 3 x 500 kV CB (2 T/L Bays) 1 diameter with 2 x 500 kV CB (T/L Bay) 2 x 100 MVAr, 500 kV shunt reactor (with neutral reactor) 1 x 500/150 kV, 500 MVA transformer 2 x 150 kV transformer bay 2 x 150 kV line bay 1 x 150 / 20 kV, 60 MVA transformer 5 x 20 kV switchgear Telecommunication (PLC) Equipment associated with the project