Pretoria North substation extension contract
The City of Tshwane Metropolitan Municipality has awarded a R41-million turnkey contract to ACTOM Power Systems (formerly Alstom Power Systems) to extend and refurbish the 132/11 kV Pretoria North substation to meet increased demand resulting from residential and commercial development in the area, as well as to assure reliability of supply.
“The Pretoria North substation is one of the oldest substations in the city and is ripe for refurbishment. It also needs to be expanded and the contract involves installing an extra two transformers, as well as refurbishing the two existing transformers, reconfiguring the primary supply lines and installing a fully automated state-of-the-art control room at the site,” explained Herman Smit, ACTOM Power Systems’ contract manager responsible for the contract.
He added that the contract, awarded in May this year and due for completion in early-2012, will to be carried out in phases due to the fact that the substation has to remain operational for the duration.
“We are also restricted by space constraints. The first phase will involve installing the new transformers in the new section being established alongside the existing substation and linking up the supply line to them, as well as setting up the control room and installing the medium voltage switchgear supplying it,” Smit explained.
“The new transformers will then take over from the old transformers as the source of supply to the area served by the substation. The subsequent two phases of the contract will involve refurbishing the existing two transformers in turn and connecting the second primary supply line to them.”
Noteworthy benefits of the upgrade include enhanced redundancy, more flexible operation via busbar selectability and an improved supervisory control and protection overlay.
The new power transformers are being supplied free issue by the Tshwane Electricity Department, whereas all the other new equipment involved in the upgrade and refurbishment is being sourced from sister companies of ACTOM Power Systems. The 132 kV circuit breakers, isolators, current transformers and voltage transformers are being supplied by ACTOM High Voltage Equipment, the protection and SCADA equipment by ACTOM Protection & Control and the 11 kV switchgear by ACTOM MV Switchgear.
ACTOM (Pty) Ltd is a black empowered electrical engineering company that employs over 6 000 people and has an annual order intake in excess of R5bn. It has 27 operating units, 22 production facilities and 25 distribution centres throughout South Africa.
ACTOM partners Alstom France for environmental equipment and in serving the maintenance, upgrade and retrofit market for larger boilers, as well as for railway transport activities.
ACTOM holds exclusive distribution, technology and representation rights for Areva T&D in Southern Africa and maintains management, technical and commercial links to Areva T&D business units in Europe.
ACTOM formerly traded under the name Alstom South Africa and re-branded to ACTOM in September 2009.
For further information contact John McClure, ACTOM Power Systems
Private Bag 1, Bramley 2018
Tel (011) 430-8700 Fax (011) 887-9009
Date: July 21, 2010.
Caption: ACTOM Power Systems is nearing completion of refurbishment of Tshwane’s 132/11 kV Olievenhoutbosch substation, seen here, a similar contract to the Pretoria North substation refurbishment contract.