Decision Discovery and Optimization Lab
Decision Discovery and Optimization Lab
  • Видео 13
  • Просмотров 1 553
Jnana Sai Jagana: Robust Mixed-Integer Optimization for Demand Response with Interruptible Load
Abstract: Industrial demand response is an effective strategy for power-intensive manufacturing plants to reduce operating costs and in turn also contribute to the reliable operation of the power grid. Although industrial processes are increasingly participating in various demand response activities, the financially incentivized provision of interruptible load is still not well explored. This could be due to the uncertainty that, when providing interruptible load, one does not know in advance when load reduction will be requested. We apply an adjustable robust optimization approach to address this uncertainty in the production schedule of a continuous industrial process providing interrup...
Просмотров: 9

Видео

Baiwen Kong: Nonlinear Model Predictive Control of Flexible Ammonia Production
Просмотров 35Месяц назад
Abstract: Flexible dynamic operation of ammonia synthesis is a key enabling factor of green ammonia production in the face of intermittency in renewable energy sources. A nonlinear model predictive control scheme is presented in this paper for the Haber-Bosch ammonia synthesis process with a varying feed flowrate. The considered process consists of three interstage-cooled reactor beds and a fla...
Yen-An Lu: BO4IO: Bayesian Optimization for Inverse Optimization with Uncertainty Quantification
Просмотров 41Месяц назад
Abstract: Data-driven inverse optimization (IO) aims to estimate unknown parameters in an optimization model from observed decisions. The IO problem is commonly formulated as a large-scale bilevel program that is notoriously difficult to solve. We propose a derivative-free optimization approach based on Bayesian optimization, BO4IO, to solve general IO problems. The main advantages of BO4IO are...
Oswaldo Andrés-Martínez: Design of an Ammonia Synthesis Process for Thermochemical Energy Storage
Просмотров 54Месяц назад
Abstract: Concentrating solar power systems are crucial for capturing solar energy. However, the intermittent nature of sunlight necessitates effective energy storage solutions. Ammonia-based thermochemical energy storage systems have emerged as a promising option, utilizing solar energy to dissociate ammonia into hydrogen and nitrogen gas. This gaseous mixture is then employed for exothermic a...
Baiwen Kong: Dynamic Modeling and Hierarchical Control of a Microgrid Incorporating Ammonia
Просмотров 6110 месяцев назад
Abstract: A novel stand-alone microgrid concept incorporating green ammonia for energy storage is proposed in this work. Wind and solar energy are captured and used for meeting residential demands or powering water electrolysis. Hydrogen produced from electrolysis is further used to produce ammonia through the Haber-Bosch process. Generator sets are dispatched for power generation from hydrogen...
Ben Riley: Multi-Scenario Design of Ammonia-Based Energy Storage Systems as Non-Wires Alternatives
Просмотров 55Год назад
Abstract: Energy storage can be used by power distribution system operators as a non-wires alternative to defer infrastructure upgrades and improve feeder reliability. One emerging energy storage technology is energy storage via the synthesis and subsequent consumption of chemicals in internal combustion engines or fuel cells (i.e., ”chemical energy storage"). Some chemicals, such as hydrogen a...
Tushar Rathi: Capacity Planning with Uncertain Endogenous Technology Learning
Просмотров 612 года назад
Abstract: Optimal capacity expansion requires complex decision-making, often influenced by technology learning, which represents the reduction in expansion cost due to factors such as cumulative installed capacity. However, having perfect foresight over the technology cost reduction is highly unlikely. In this work, we develop a multistage stochastic programming framework to model capacity plan...
Andrew Allman: Biomass Waste-to-Energy Supply Chain Optimization with Mobile Production Modules
Просмотров 1394 года назад
Abstract: Biomass waste is a naturally occurring agricultural byproduct. It is estimated that about 60,000,000 tons per year can be extracted sustainably without altering land use patterns or competing with existing demands. Utilizing this waste is logistically challenging due to the inherent low density and distributed availability of biomass. This work proposes a supply chain optimization pro...
Qi Zhang: A Unified Framework for Adjustable Robust Optimization with Endogenous Uncertainty
Просмотров 3054 года назад
Abstract: This work proposes a framework for multistage adjustable robust optimization that unifies the treatment of three different types of endogenous uncertainty, where decisions, respectively, (a) alter the uncertainty set, (b) affect the materialization of uncertain parameters, and (c) determine the time when the true values of uncertain parameters are observed. We provide a systematic ana...
Rishabh Gupta: Decomposition and Adaptive Sampling for Data-Driven Inverse Linear Optimization
Просмотров 2664 года назад
Abstract: This work addresses inverse linear optimization where the goal is to infer the unknown cost vector of a linear program. Specifically, we consider the data-driven setting in which the available data are noisy observations of optimal solutions that correspond to different instances of the linear program. We introduce a new formulation of the problem that, compared to other existing meth...
Wei Feng: Distributionally Robust Optimization for Integrated Production and Maintenance Scheduling
Просмотров 2204 года назад
Abstract: In chemical manufacturing processes, equipment degradation can have a significant impact on process performance or cause unit failures that result in considerable downtime. Hence, maintenance planning is an important consideration, and there has been increased efforts in scheduling production and maintenance operations jointly. In this context, one major challenge is the inherent unce...
Wei Feng: Multistage Robust Mixed-Integer Optimization Under Endogenous Uncertainty
Просмотров 1934 года назад
Abstract: Endogenous, i.e. decision-dependent, uncertainty has received increased interest in the stochastic programming community. In the robust optimization context, however, it has rarely been considered. This work addresses multistage robust mixed-integer optimization with decision-dependent uncertainty sets. The proposed framework allows us to consider both continuous and integer recourse,...
Hanchu Wang: Nitrogen Management in the Design of Sustainable Ammonia-Based FEW Systems
Просмотров 1144 года назад
Abstract: As the basis for virtually any form of nitrogen fertilizer, ammonia plays a vital role in agriculture; in addition, there has been an increased interest in its use as a carbon-free energy carrier. However, ammonia is also associated with two major environmental concerns: CO2 emissions from the conventional production process and nitrogen pollution from the excessive use of ammonia-bas...