Zest WEG delivers its biggest mobile substation
South Africa: Zest WEG has recently custom designed and manufactured one of the largest mobile substations ever built in South Africa.
Image source: CBN
South Africa: Zest WEG has recently custom designed and manufactured one of the largest mobile substations ever built in South Africa.
The 50 MVA mobile substation – destined for Guinea – includes a dual voltage rated mobile transformer produced by WEG in Brazil, according to Bernard Mitton, engineering team leader for integrated solutions at Zest WEG. The substation will be commissioned early in 2022.
“This is a full turnkey project procured by Robustrade in Dubai for the Utility Company of Guinea, called Electricité De Guinée,” says Mitton. “Our in-house team coordinated the electrical, civil and mechanical designs, as well as the engineering solutions for the customer.”
The full project includes three trailers of equipment, and allows the end-user to step down power from the main national grid at various geographic points as required. High voltage power is tapped from existing overhead line with a specifically designed and manufactured tee-off solution connecting the supply into the mobile substation, where it is stepped down from 110 kV or 60 kV to 20 kV or 30 kV depending on requirements.
It can also be put to use during routine maintenance, to manage the loads of existing substations being maintained, repaired or inspected. This minimises the delay in taking out the unit due to load and other system constraints. The mobile substation can even be used to provide power for large project sites or mining sites of high importance.
He highlights that the design and construction of solutions for mobile applications, including mobile generators, is one of Zest WEG’s strengths. The expertise and capability within the business allows these units to be custom-designed to suit customer requirements.
Source: CBN