Today’s power plants are being dispatched for greater cyclic operation to allow for increasing renewable energy production, exposing operators to increased maintenance costs from more frequent start-ups. Adapting mature technology to become more flexible can avoid many of the cost impacts of cycling.
If your 7F gas turbine already has the DLN 2.6+ combustor and your plant runs on Mark Ve or VIe controls, you can install the AFS upgrade added for even greater flexibility and turndown. There are a number of other upgrades that can also be added with axial fuel staging (AFS) for even greater outcomes, including OpFlex software, AGP and steam turbine upgrades.
GE's DLN combustion system features leading-edge expertise and enables the operational flexibility you need, helping reduce emissions and start up faster than ever before. With the 2.6+ upgrade, you will also have the advantage of improved capacity, minimum fuel burn, and O&M part/outage costs.
*Consult your GE representative for 7F.04-200 and 7F.05 applications
With the AFS upgrade added to your DLN 2.6+ combustion system, you can realize even greater turndown, reduced renewable curtailment, and increased access to ancillary markets.
The AFS upgrade axially stages combustion in two zones; which allows the combustor to have enhanced performance at both baseload and minimum turndown. Here’s a look at how the technology functions (model simplified for clarity).
