MV Protection and Control Divisional News – Medupi and Kusile Contracts

Medupi and Kusile Contracts


ACTOM company scores double win with protection and control contracts for both Medupi and Kusile

Alstom Power, the main contractors for the turbines for both of Eskom’s new coal-fired power stations, Medupi and Kusile, has followed up the award of the turnkey protection and control contract for Medupi to local company ACTOM Protection & Control (P&C) last year, by awarding the identical contract for Kusile to the company.

The new R16-million contract, awarded in February this year, is due for completion in 2014, with the first delivery scheduled for October this year.

“This was in line with expectations. The two contracts were tendered for jointly but awarded separately, so it was clear that the company that won the first contract stood a good chance with the second by virtue of winning the first, as the technical specifications and contract conditions are exactly the same,” explained Martin Kelly, P&C’s General Manager.

“Winning both of these highly prized contracts represents a major coup for our company, the ACTOM group and our technology partner and principal Areva T&D of France.”

Other favourable factors that contributed towards P&C’s selection for the Kusile protection and control contract were:

• The equipment is already well proven, as similar equipment was supplied by P&C in two earlier contracts for Eskom, involving upgrading of the protection and control systems of the return-to-service power stations Grootvlei and Komati.
• The design of the systems for Medupi are now well advanced and progressing according to plan. Alstom Power carries out exhaustive monitoring of progress, covering all relevant aspects, including P&C’s assembly and test facilities, its local manufacturing facilities where applicable and its project management capabilities, technical skills and quality control processes.

The contract encompasses system, protection and automation design, interface design, detailed engineering, manufacture, testing, supply, factory acceptance testing and commissioning of the generator protection equipment.

The protection equipment comprises customised protection, control and recording systems for the generator, generator transformer, auxiliary supply transformer and associated circuit breakers of each of the six 800 MW generator units.

The protection relays and the disturbance recorders are being manufactured and supplied by Areva T&D, while the HMI interface equipment is being supplied and configured locally.

Each of the power station’s six generator units will have protection and control systems comprising a suite of four panels.

Brian van Rensburg, P&C’s Business Development Manager, said: “Two of these panels comprise protection equipment – the second panel being a duplicate of the first for redundancy – the third is a control panel and the fourth is a disturbance recorder panel.

“The main equipment in each of the two protection panels consists in turn of four intelligent electronic devices (IED’s) – to respectively monitor the generator itself, the main power transformer connecting the generator to the electricity grid and the two power transformers for internal power supply of the power station.

“The control panel contains the synchronisers and visual monitoring computer and the disturbance recorder panel’s function is mostly for post-incident analysis.”

The communication system supplied as part of the total scheme is certified to IEC 61850, the latest international communication standard, which guarantees the highest possible flexibility and interoperability currently available worldwide, with one of the main benefits being an ability to accommodate modifications without any changes in hardware.

“Compared with its predecessors, the IEC61850 certification of this system means substantially reduced wiring, more accurate time-stamped event reporting and scope for future integration of the system into a station SCADA,” Van Rensburg concluded.

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 Martin Kelly, ACTOM Protection & Control
PO Box 13024, Knights 1413
Tel (011) 820-5319 Fax (011) 820-5323

Date:  June 30, 2010

Caption:  Two lead electrical engineers from Alstom Power, Christian Lemouton (left) and Avinesh Teeruth (second from right) visited ACTOM Protection & Control’s (P&C) plant in early-June on a routine inspection visit to check on progress with the Medupi protection and control contract. Senior P&C staff (from left) General Manager Martin Kelly, Contracts Administrator Daleen Lindeque, Business Development Manager Brian van Rensburg and Senior Design Engineer Herman Mare are seen with them in front of some of the completed panels for the new power station.