Abstract
The Integrated Gasification Combined Cycle (IGCC) possesses a number of advantages over traditional power generation plants, including increased efficiency, flex-fuel, and carbon capture. A lesser-known advantage of the IGCC system is the ability to coordinate with the smart grid. The idea is that process modifications can enable dispatch capabilities in the sense of shifting power production away from periods of low electricity price to periods of high price and thus generate greater revenue. The work begins with a demonstration of Economic Model Predictive Control (EMPC) as a strategy to determine the dispatch policy by directly pursuing the objective of maximizing plant revenue. However, the numeric nature of EMPC creates an inherent limitation when it comes to process design. Thus, Economic Linear Optimal Control (ELOC) is proposed as a surrogate for EMPC in the formulation of the integrated design and control problem for IGCC power plants with smart grid coordination.
Highlights
Compared to traditional power plants, Integrated Gasification Combined Cycle (IGCC) based power plants have many advantages including increased efficiency, flex-fuel, and carbon capture opportunities
Regarding the Air Separation Unit (ASU), a compressed air storage unit can be placed between the air compressor and the cryogenic
Processes 2020, 8, 288 distillation units. This configuration would maintain a constant flow of compressed air to the cryogenic distillation, while allowing the power consumed by the air compressors to be anti-related with the electricity price, which would increase the net power output of the IGCC plant during high price periods
Summary
Compared to traditional power plants, Integrated Gasification Combined Cycle (IGCC) based power plants have many advantages including increased efficiency, flex-fuel, and carbon capture opportunities. This configuration would maintain a constant flow of compressed air to the cryogenic distillation, while allowing the power consumed by the air compressors to be anti-related with the electricity price, which would increase the net power output of the IGCC plant during high price periods. While EMPC works well for process control, it has limitations when it comes to system design It cannot handle binary variables, which indicate the attendance of specific hardware units.
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