Technical Assessment of a Renewable Aided Power Plant for Different Operational Load

Abstract

Renewable aided power generation (RAPG) is capable of integrating low to medium temperature renewable resources in the case of 90-260 °C into a conventional Rankine cycle power plant to replace the extraction steam of power plant. In a RAPG plant, renewable fluid is used to preheat the feed water of power plant, instead of the extraction steam, thus the replaced extraction steam expand further in steam turbine to generate electricity. The renewable fluid can be used to replace the extraction steam of power plant at different extraction points and replace different percentage of extraction steam. In the current study, a model of RAPG plant has been developed in order to calculate the technical and economic assessment of RAPG plant for different operational conditions. The overall efficiency of the RAPG plant and the renewable thermal share of power generation with different replacement of extraction steam at different operational load have been studied in this paper. A 1000 MW ultra supercritical power plant has been used as case study, the power plant at 100%, 75%, 50%load have been studied in this paper.