- National Grid, Malaysia
National Grid, Malaysia (Malay:"Grid Nasional") is the primary
electricity transmission network linking the electricity generation, transmission, distribution and consumption inMalaysia . It is operated and owned by Tenaga Nasional Berhad (TNB). More than 420 substations in Peninsular Malaysia are linked together by the extensive network of transmission lines operating at 132, 275 and 500 kilovolts (kV). Power generated byTenaga Nasional and independent power producers is carried by the National Grid towards customers connected to the various distribution networks. A small number of customers, mainly steel mills also take power directly from the transmission grid.The National Grid is electrically interconnected to the transmission network of the
Electricity Generating Authority of Thailand (EGAT) and also toSingapore Power .History
It was founded on 1959. The first line on the national grid was the transmission line from
Tanjung Kling inMelaka to the city of Melaka.Power producers
The power generation capacity connected to the National Grid is 18,391 MW, with a reported surplus capacity of 40% made up of older
power stations on standby status, as of December 2006.The generation capacity is about 82% from thermal power stations and 18% from hydroelectric power stations. Fuel mix is 46% gas, 43% coal, 10% hydro and 1% from multi fuel distillates.
Listed below are the power producers connected to the Malaysian National Grid on Malaya and their installed generation capacity:
*Tenaga Nasional - with 11,296 MW installed capacity.
*Malakoff - with 4,393 MW installed capacity.
*Powertek - with 1,490 MW installed caapcity.
*YTL Power - with 1,212 MW installed capacityThere are two power producers on
Borneo with state Grids that will be connected to the National Grid in the future, possibly after 2012:
*Sarawak Electricity Supply Corporation (SESCO) - with 750 MW installed capacity [http://atimes.com/atimes/Southeast_Asia/HJ12Ae01.html] .
*Sabah Electricity - with 785 MW installed capacity. [http://www.sesb.com.my/]
**including from 5 independent power producers (318 MW).Main power stations
Listed below are several selected major
power stations :Hydroelectric power stations
*
Sultan Mahmud Power Station ,Tasik Kenyir ,Terengganu
*Sultan Ismail Petra Power Station,Pergau ,Kelantan
*Temenggor Power Station,Temenggor Dam ,Perak
*Kenering Power Station -Kenering Dam ,Perak
*Chenderoh Power Station -Tasik Chenderoh ,Perak
*Sultan Idris Power Station ,Lata Iskandar ,Perak Coal power stations
*
Manjung Power Station ,Manjung ,Perak
*Sultan Salahuddin Abdul Aziz Shah Power Station ,Kapar ,Selangor
*Jimah Power Station ,Lukut ,Negri Sembilan
*Tanjung Bin Power Station ,Pontian ,Johor Oil power stations
*
Tuanku Jaafar Power Station ,Port Dickson ,Negeri Sembilan
*Tanjung Kling Power Station ,Melaka Gas turbine power stations
*
Lumut Power Station , atPantai Remis ,Perak
*Sultan Iskandar Power Station ,Pasir Gudang ,Johor
*Serdang Power Station ,Serdang ,Selangor PIssMiscellaneous
*
Sultan Ismail Power Station ,Paka ,Terengganu - Oil and gas turbine power station
*Connaught Bridge Power Station ,Klang ,Selangor - Steam turbine power stationTransmission
Length of grid: x,xxx km. The transmission line is mostly
HVAC , with a short portion HVDC to Thailand. The future link from theBakun Dam to Malaya will be constructed asHVDC , possibly for completion after 2012.Transmission lines by voltage
HVAC 132 kV
HVAC 275 kV
HVAC 500 kV
The 500kV transmission system is the single largest transmission system to be ever developed in Malaysia. Transmission Technology Sdn Bhd (TTSB) is the first ever local contractor to be awarded a project of this magnitude. Valued at RM1.6 billion, the system forms the new backbone of the National Grid.
Begun in 1995, Phase 1 involved the design and construction of the 500kV overhead transmission lines from
Gurun ,Kedah in the North along the west coast toKapar , in the central region and fromPasir Gudang toYong Peng in the south of Peninsular Malaysia.As part of this development TTSB also constructed 6 substations namely Gurun East, Junjung, Bukit Tarek, Kapar, Yong Peng East and Bukit Batu substations.
The total distance covered for the 500kV transmission lines is 522km and the 275kV portion is 73km. Of the lines constructed, only the Bukit Tarek to Kapar sections had been energised at 500 kV. The remaining lines are presently energised at 275 kV.
Later, in order to cater for the additional power transmission requirements from the 2100 MW
Manjung Power Station , the 500 kV system was extended fromBukit Tarek toAir Tawar and from Air Tawar toManjung Power Station (run by TNB Janamanjung Sdn Bhd).In 2006, the 500 kV lines between
Bukit Batu andTanjung Bin were commissioned to carry the power generated by the 2100 MWTanjung Bin Power Station .Connections to Thailand
The original 132 kV
HVAC interconnection of 80 MW with EGAT was commissioned in 1981, linkingBukit Ketri in the state ofPerlis withSadao inThailand . The second 300 kV HVDC is of 300 MW transmission capacity.Connections to Singapore
The connection to Singapore is by two x 230 kV submarine cables of 200 MW transmission capacity.
Distribution
Distribution lines are of 33 kV, 22 kV, 11kv, 6.6 kV and 415/240 volt in the Malaysia distribution network.
Consumption
This is a stump for listing major consumers, defined as consumers with major substations of 132 kV on their property.
Safety
Major obstacles on National Grid lines
*high flyover bridge
*roads and highways
*railway line
*rivers
*straits
*wayNotable events
*
2005 - A power blackout on northern peninsula Malaysia causes of the main cable transmission line grid nearSerendah ,Selangor , had broken down.See also
*
Tenaga Nasional Berhad
*Sarawak Electricity Supply Corporation
*Sabah Electricity References
External links
* [http://www.tnb.com.my Tenaga Nasional Berhad]
* [http://www.ttech.com.my/ Transmission Technology]
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