Abstract
Parabolic trough power plants have several concepts for production energy, these concepts are developed by Solar Electric Generating System (SEGS) and Direct Solar Steam (DISS) project for research and development, the SEGS is developed the integrated solar combined cycle system (ISCCS), however in recent years the DISS project with direct steam generation (DSG) technology proves the evaluation from the cost, the process control and the easy erection in construction. There are many studies developed in the solar hybrid power plants system for ISCCS and DSG, in this paper will be evaluated these models of solar hybrid system compound a natural gas combined-cycle backup for solar thermal energy, taken into account the thermodynamic analyses and techno-economic assessment for each concept of the ISCCS and DSG plants. These models evaluated in this work will be simulated with TRNSYS program and SAM System Advisor Model. This analysis was conducted to get the performance in these concepts and shows the lower levelized energy cost (LEC), so to increase to the electricity net efficiency in solar contribution of the power plants.
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