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Transmission
System Improvements
The Division takes initiatives to ensure that transmission projects are completed on time and
within budget. These initiatives include improvement of the procurement approach and
practice; improve project specifications and BQ; and ensuring accurate project scoping together
with enhanced QA/QC process.
The Chubadak 275 kV substation near Gombak which is part of the Central Area Reinforcement
(CAR) Project was completed and commissioned in May 2007. With the CAR Project being close
to its completion date of December 2007, it would further strengthen the security of supply
around Kuala Lumpur and the Klang Valley.
The 500 kV transmission line that connects the Jimah IPP Coal Fired Power Station to Lenggeng
Substation and to Olak Lempit Substation is progressing to be completed by December 2007. A
total of 30 projects were fully completed and commissioned during the year in review. Out of
these projects, 13 were substation projects that contribute to additional 2,130 MVA transformer
capacity in the system.
Improvement are not restricted to the Central region alone. In the North, the Division has
upgraded the Kinta Valley 66 kV with the 132 kV system. This is a milestone in the achievement
of supply reliability in Perak, yet marking another milestone in Transmission history whereby
the whole of 66 kV system is now de-commissioned in the National Grid, with the exception of
only one dedicated feeder connected for a particular customer.
Major rehabilitation of the Skudai substation was completed to strengthen the electricity
supply in the Southern region which also caters for the development of Wilayah Pembangunan
Iskandar.
In the Eastern region, the re-configuration of the Tanah Merah-Kenyir 275 kV transmission line
into Kandis would strengthen the electricity supply to Kelantan.
The upgrading of the National Load Despatch Center (NLDC) project has progressed satisfactorily
and is scheduled for completion by 2008. Through this project TNB will acquire a state-of-theart
SCADA system and Energy Management System (EMS) to meet the future needs of TNB,
providing the technological support for secure operation and the development of an intelligent
grid system.
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Tenaga Nasional Berhad Annual Report 2007