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The Metropolitan Electricity Authority (MEA) is a Distribution Network Operator (DNO) in Thailand, operating across the Bangkok Metropolitan region.


As part of a strategy to upgrade its ageing infrastructure, MEA plans to convert the existing overhead line network to an underground cable network in some areas. This was initially planned for the Bangkok Metropolitan region but with the potential to extend this project into other regions in the future.


As part of this upgrade project, MEA decided to replace existing HV Fused Ring Main Units (RMU), with the latest technology RMUs incorporating Vacuum Circuit Breaker protection and full monitoring and control options to enhance network intelligence and increase network efficiency.


Lucy Electric were asked to design and implement a pilot project to test the impact of automation with the objective of improving the System Average Interruption Duration Index (SAIDI) and System Average Interruption Frequency Index (SAIFI) to enhance the quality of supply to MEA’s customers.

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