Research Helps TVA Increase Operational Flexibility and Turndown Potential of Base-load Plants

A multi-phase EPRI case study enabled Tennessee Valley Authority (TVA) to adopt a systematic approach to lower-load operation of its base-load plants. Results of the study, which monitored performance of the boiler, turbine, selective catalytic reduction (SCR) systems, and water chemistry, will allow TVA to increase the turndown potential of its plants, while simultaneously maintaining...

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Enel Increases Operational Flexibility of Its Combined-Cycle Gas Turbines by Reducing Hot Startup Times

EPRI and Enel worked together to analyze current design parameters and operating practices at one of its combined-cycle gas turbines (CCGTs), and with this information, developed a set of plant modifications and new procedures to reduce plant startup times. Implementation of these recommendations will increase the operational flexibility of this plant and, potentially, others in...

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Three Utilities Demonstrate Promising Alternative Layup Technique

As part of an EPRI project, FirstEnergy, Louisville Gas and Electric and Kentucky Utilities (LG&E and KU), and Consumers Energy conducted a series of trials of a new film-forming amine as an alternative layup technique for protecting tubing, piping, and equipment in the water/steam cycle of power plants. The chemical treatment offers utilities a simple...

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Operational Flexibility Implementation: Case Studies

This project aims to demonstrate and document operational strategies for reducing the impact of two-shifting, ramping, and turndown on the operation on plant equipment. Multiple host units will allow case studies to be conducted across a range of generating asset types and systems. The primary research focus will be on reducing thermal transients experienced by...

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