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I am a graduate student in Chemical Engineering, and work on the development of the multi-scale dynamic models to assess the impact of power plant cycling. As the increased utilization of renewable sources for electricity generation, the traditional power plants would be expected to operate on a load following condition in response to the intermittency of these renewable sources. In this project, a dynamic model of power plant has been established in Aspen Plus Dynamics, while the equipment damage and cost of cycling operation is modeled in Aspen Custom Modeler. A comprehensive model has been integrated and analyzed in order to explore the impacts of load following on the power plants and develop ways to mitigate the adverse effects.
Work Experience:
Currently working at the University of Central Florida, Orlando, FL
Education:
Ph.D. Chemical Engineering, West Virginia University, Morgantown, WV, 2015 - 2021
M.S. Chemical Engineering, East China University of Science and Technology (ECUST),
China, 2015
B.Sc. Chemical Engineering, East China University of Science and Technology (ECUST),
China, 2012
PhD Research
PhD Research
Quantifying the Impact of Load-Following on Gas-fired Power Plants
The objective of this work is to quantify the impact of load-following on plant efficiency and health of natural gas combined cycle (NGCC) power plants by developing high-fidelity multi-scale dynamic models. There are four main tasks in this project. First, dynamic model of an NGCC power plant has been developed. The main components of the NGCC plants are the gas turbine, heat recovery steam generator, and steam turbine. The second task focuses on one of the undesired phenomena known as ‘spraying to saturation’ being faced by the NGCC plants during load-following operation, where the attemperator spray leads to saturation at the inlet of superheater and/or reheater causing damage and eventual failure of the superheater and/or reheater tubes due to the two-phase flow. This project seeks to develop and evaluate different configurations of NGCC plants and operational strategies that can not only eliminate ‘spraying to saturation’ but can maximize the plant efficiency. The third task focuses on modeling the damages to the boiler components due to rapid load-following, which is leading to higher operation and maintenance costs. Stress and wear models have been developed by accounting for creep and fatigue damages in key HRSG components. A model for estimation of plant lifetime consumption due to the load-following operation has also been developed. A multi-objective dynamic optimization algorithm is developed for maximizing plant efficiency and minimizing deviation from desired ramp rates while satisfying operational constraints such as those due to stress and wear. The fourth task focuses on developing reduced order models. Since the modeling domain of interest includes multiple time scales and multiple spatial scales, using the detailed models can be computationally intractable for optimization/scheduling/control. Therefore, reduced order dynamic models have been developed for the NGCC system including the health models so that they can be computationally tractable for being used in dynamic optimization while providing desired accuracy.
Publications
Publications
Wang Y, Wang J, Zhang X, Debangsu Bhattacharyya, Edward Sabolsky, “Quantifying Environmental and Economic Impacts of Highly Porous Activated Carbon from Lignocellulosic Biomass for High-Performance Supercapacitors”, 15, 351, 2022, Energies, 2022
Wang Y, Bhattacharyya D, Turton, R, “Multi-Objective Dynamic Optimization for Optimal Load-following of Natural Gas Combined Cycle Power Plants under Stress Constraints”, Industrial & Engineering Chemistry Research, 60,14251-14270, 2021, Featured as an ACS Editors’ Choice, 2021
Wang Y, Bhattacharyya D, Turton, R, “Evaluation of Novel Configurations of Natural Gas Combined Cycle (NGCC) Power Plants for Load-Following Operation using Dynamic Modeling and Optimization”, Energy & Fuels, 34, 1053-1070, 2020
Kim R, Vudata S P, Wang Y, Bhattacharyya D, Lima F V, Turton R, “Dynamic Optimal Dispatch of Energy Systems with Intermittent Renewables and Damage Model”, Mathematics, 8, 868, 2020
Wang Y, Bhattacharyya D, Turton R, “Dynamic Modeling and Control of a Natural Gas Combined Power Plant for Load-Following Operation”, Proceedings of the Foundation of the Computer-Aided Process Design (FOCAPD) 2019, Copper Mountain Resort Colorado, July 14 - 18, 2019
Xin H, Wang Y, Bhattacharyya D, Lima F, Turton R, “Dynamic Modeling and Advanced Control of Post-Combustion CO2 Capture Plants”, Chemical Engineering Research and Design, 131, 430-439, 2018
Wang Y, Duan X, Wu W, and Zhou X, "Modeling and analysis of concentric self-thermal fixed-bed reactor for ammonia decomposition", CIESC Journal, 2015, 66(8): 3169-3176
Presentations
Presentations
Wang Y, Bhattacharyya D, “Multi-Objective Dynamic Optimization of Natural Gas Combined Cycle (NGCC) Plant Load-Following Operation with Equipment Health Constraints”, Paper 690g, AIChE Annual Meeting, Phoenix, AZ, November 13-18, 2022
Wang Y, Araia A, Bai X, Bhattacharyya D, Hu J, Khan T, Shekhawat D, Wildfire C, “Microwave-Enhanced Catalytic Ammonia Synthesis over CsRu/CeO2 Under Moderate Pressure and Temperature”, Paper 495c, AIChE Annual Meeting, Boston, MA, November 7-19, 2021
Wang Y, Bhattacharyya D, Turton R, “Optimal Load-following Operation of Natural Gas Combined Cycle (NGCC) Power Plants with Quantified Uncertainty of Equipment Health”, Virtual AIChE Annual Meeting, November 16-20, 2020
Wang Y, Bai X, Wildfire C, Shekhawat D, Ogunniyan O, Mevawala C, Bhattacharyya D, Khan T, Hu J, “Catalytic Materials and Process Development for Microwave-Assisted Ammonia Synthesis”, Paper 562c, Virtual AIChE Annual Meeting, November 16-20, 2020
Wang Y, Bhattacharyya D, Turton R, “Dynamic Performance and Equipment Health Analysis of a Natural Gas Combined Cycle (NGCC) Power Plant for Load-Following Operation”, Paper 737c, AIChE Annual Meeting, Orlando, FL, November 10-15, 2019
Wang Y, Bhattacharyya D, Turton R, “Dynamic Optimization of a Natural Gas Combined Cycle (NGCC) Power Plant for Load-Following Operation”, Paper 371r, AIChE Annual Meeting, Orlando, FL, November 10-15, 2019
Wang Y, Bhattacharyya D, Turton R, “Dynamic Modeling and Control of a Natural Gas Combined Power Plant for Load-Following Operation”, Foundation of the Computer-Aided Process Design (FOCAPD) 2019, Copper Mountain Resort Colorado, July 14 - 18, 2019
Wang Y, Bhattacharyya D, Turton R, “Dynamic Modeling and Control of a Natural Gas Combined Cycle (NGCC) Power Plant with a Damage Model”, Paper 560h, AIChE Annual Meeting, Pittsburgh, PA, October 28-November 2, 2018
Wang Y, Bhattacharyya D, Turton R, “Design and Optimization of a Natural Gas Combined Cycle Power Plant with CO2 Capture for Optimal Load-Following”, 60th Annual ISA Power Industry Division Symposium, Cleveland, OH, June 27-29, 2017
Wang Y, Bhattacharyya D, Turton R, “Dynamic Modeling and Control of a Natural Gas Combined Cycle (NGCC) Power Plant Integrated with CO2 Capture”, Paper 190f, AIChE Annual Meeting, Minneapolis, MN, October 29-November 3, 2017
Wang Y, Bhattacharyya D, Turton R, “Design and Advanced Optimization of a Natural Gas Combined Cycle Power Plant with CO2 Capture”, Paper 211e, AIChE Annual Meeting, San Francisco, CA, November 13-18, 2016
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