In a combined-cycle plant, a gas turbine generates electricity and repurposes waste heat to power a steam turbine. As with conventional fired power production, combined-cycle plants are used as a critical component for baseload power generation. Today, some of these plants require greater operational flexibility to fluctuate with demand. By operating as a load-following power plant, operators are forced to bring plants online and take them offline more frequently.
Combined-cycle power generation requires minimal design start times and stable transitions to meet financial objectives. REXA Linear and Rotary Actuators are used in a wide range of applications in combined-cycle plants, including turbine bypass systems, feedwater valves, attemperators, and gas turbine retrofits. REXA Electraulic Actuation™ offers stability, high-frequency response, repeatability, set point control accuracy, and low maintenance.