National Grid, Malaysia
National Grid, Malaysia (Malay:"Grid Nasional") is the primary
electricity transmissionnetwork linking the electricity generation, transmission, distribution and consumption in Malaysia. 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 by Tenaga Nasionaland 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 to Singapore Power.
It was founded on 1959. The first line on the national grid was the transmission line from
Tanjung Klingin Melakato the city of Melaka.
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 stationson 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 capacity
There are two power producers on
Borneowith 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
Hydroelectric power stations
Sultan Mahmud Power Station, Tasik Kenyir, Terengganu
*Sultan Ismail Petra Power Station,
*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, at Pantai Remis, Perak
Sultan Iskandar Power Station, Pasir Gudang, Johor
Serdang Power Station, Serdang, SelangorPIss
Sultan Ismail Power Station, Paka, Terengganu- Oil and gas turbine power station
Connaught Bridge Power Station, Klang, Selangor- Steam turbine power station
Length of grid: x,xxx km. The transmission line is mostly
HVAC, with a short portion HVDC to Thailand. The future link from the Bakun Damto Malaya will be constructed as HVDC, 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, Kedahin the North along the west coast to Kapar, in the central region and from Pasir Gudangto Yong Pengin 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 from Bukit Tarekto Air Tawarand from Air Tawar to Manjung Power Station(run by TNB Janamanjung Sdn Bhd).
In 2006, the 500 kV lines between
Bukit Batuand Tanjung Binwere commissioned to carry the power generated by the 2100 MW Tanjung Bin Power Station.
Connections to Thailand
The original 132 kV
HVACinterconnection of 80 MW with EGAT was commissioned in 1981, linking Bukit Ketriin the state of Perliswith Sadaoin Thailand. 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 lines are of 33 kV, 22 kV, 11kv, 6.6 kV and 415/240 volt in the Malaysia distribution network.
This is a stump for listing major consumers, defined as consumers with major substations of 132 kV on their property.
Major obstacles on National Grid lines
*high flyover bridge
*roads and highways
2005- A power blackout on northern peninsula Malaysia causes of the main cable transmission line grid near Serendah, Selangor, had broken down.
Tenaga Nasional Berhad
Sarawak Electricity Supply Corporation
* [http://www.tnb.com.my Tenaga Nasional Berhad]
* [http://www.ttech.com.my/ Transmission Technology]
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