Energy Commission investigating power supply disruption

KUALA LUMPUR - The Energy Commission (ST) is currently investigating the cause of power supply disruption which affected several areas in Peninsular Malaysia, on Wednesday.

In a statement, the commission said initial investigation found that a power trip occurred at the North Yong Peng 275kV main intake substation in Johor due to an equipment damage at the station.

The incident also affected several transmission lines from other substations resulting into an outage on the national grid system.

“The supply disruption has also caused the national grid system to face frequency drop and the automatic load shedding scheme was activated where in some areas, electricity supply was automatically cut off to stabilise the frequency of the grid system,” it said.

However, Tenaga Nasional Berhad (TNB) managed to restore the power supply in stages after taking into consideration the stability of the grid system.

The restoration process began at about 12.56pm and it took about more than two hours to be completed.

“ST takes this incident seriously and is conducting investigation to prevent similar incidents from recurring and will propose improvement measures,” it said.

ST also said action will be taken against any party found to have committed any related offences under the Electricity Supply Act 1990 and Electricity Regulations 1994.

On July 27, most states in Peninsular Malaysia experienced electricity supply outage.

It was reported that Petaling Jaya, Cheras, Bangi (in the Klang Valley); Bayan Lepas and Seberang Jaya (Penang); Panchor, Johor and Bandar Indera Mahkota, Pahang were among the areas hit by the power outage that started at 12.39 pm.