Peaking power demands met head-on. Let me tell you about Acacia Power Station. Situated on the outskirts of Cape Town, Acacia Power Station plays a vital role in South Africa’s power grid. It stands ready to meet peak demands at a moment’s notice.
Acacia Power Station has three 57 MW gas turbine generators. Each unit uses engines similar to those found in a Boeing 707 aircraft. This similarity gives Acacia Power Station a rapid response capability. It can quickly channel 171 MW to the national grid.
Commissioned in 1976, Acacia Power Station provides crucial line stabilization. More importantly, it acts as a backup electrical supply for the Koeberg Nuclear Power Station. If Acacia Power Station lacks sufficient capacity, Koeberg must shut down. This responsibility highlights Acacia’s importance to the region’s power stability.
The original control systems at Acacia Power Station used hardwired relay logic. These systems became obsolete. Expert knowledge to maintain them dwindled. Historical plant information was missing. Remote engineering support was impossible. In 2007, Eskom decided to upgrade these critical resources.
The upgrade involved implementing modern SCADA facilities. This was done without interrupting service or black start capabilities. The new system is based on Wonderware’s Historian and InTouch HMI/Scada. The implementation of the new system came with its own set of challenges ranging from getting operator buy-in to the fact that, in Acacia’s case, only one unit was allowed to be unavailable at any time in order not to jeopardise Koeberg’s status.
Acacia Power Station can be operated remotely from Eskom’s National Control Centre. This provides backup and black-start capability. Sequencing is automatic. The units synchronize to the system in about 190 seconds after the start signal. They reach full load in 5 minutes using normal loading. Fast loading takes only 15 to 20 seconds.
The gas turbines at Acacia Power Station run on kerosene. Each unit consumes 5.7 liters per second at a base load of 57 MW. Fuel is pumped from bulk storage tanks through pipelines.
During the 2010 FIFA World Cup, Acacia Power Station was ready for action. Its upgrade ensured it could handle peak power demands during the South African winter.
Acacia Power Station is a geographically distributed initiative. It includes hydroelectric, pump storage, and gas turbine plants. Maintained in a high state of readiness with continuously updated monitoring systems. These systems maximize the benefits of evolving technologies.
Eskom’s Peaking Generation unit oversees Acacia Power Station. This unit balances peak power demands on the national grid. Acacia also stabilizes the voltage. Its main role remains backup power for Koeberg.
Acacia and Port Rex gas turbine power stations contribute to a better way of life in South Africa.