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INFORMS Nashville – 2016

141

5 - Stochastic Models To Optimize Biomanufacturing Operations

Tugce Martagan, Eindhoven University of Technology,

School of Industrial Engineering, Eindhoven, Netherlands,

t.g.martagan@tue.nl

An interdisciplinary framework is developed to reduce costs and lead times in

biomanufacturing operations. The proposed framework consists of Markov

decision models that dynamically control and optimize the fermentation and

purification operations. We characterize the structural properties of the optimal

operating policies, and propose a new zone-based decision making approach to

quantify the risks and costs in biomanufacturing operations. We provide

guidelines that are easy to implement in practice, and develop approximation

procedures to solve industry size problems.

MA58

Music Row 6- Omni

Energy V

Contributed Session

Chair: Jaeyoung Cho, Assistant Professor, Lamar University, 6195 N

Major Dr., Beaumont, TX, 77713, United States,

jcho@lamar.edu

1 - A New Computational Method For Rolling-horizon Stochastic

Optimization In Power Systems

Site Wang, Clemson University, Freeman Hall, Fernow Street,

Clemson, SC, 20634, United States,

sitew@clemson.edu

Harsha Gangammanavar, Sandra D Eksioglu, Scott J. Mason

We investigate a multi-period, economic dispatch problem in a power system with

high penetration of renewable resources. We propose a rolling horizon stochastic

programming framework to analyze this problem. We solve this problem over a

one-day horizon with sub-hourly intervals using novel warm-up techniques

developed for the stochastic decomposition algorithm. We compare our stochastic

approach with existing deterministic methods via extensive computational studies

on real-scale systems.

2 - Greening The Vehicle Fleet: Evidence From Norway’s Co2 Feebate

Shiyu Yan, Norwegian School of Economics, Bergen, Norway,

shiyu.yan@nhh.no

To improve vehicle fuel efficiency and reduce CO2 emissions, Norway linked

vehicle registration taxes to CO2 intensities, later adapted into feebate. We exploit

a detailed vehicle registration dataset by econometric techniques. We find that the

vehicle tax contributes to a purchase shift towards low-emitting cars. The results

show that 1000NOK tax increase for a vehicle is associated with a 1.13%-1.58%

registrations reduction. A pattern of rising CO2 taxes across cars results in an

elasticity (-0.06) of CO2 intensities with respect to CO2 prices. The estimated tax

effect implies that the CO2 differentiated vehicle registration tax explains 79% of

the reduction in average CO2 intensity of new cars.

3 - System Frequency Regulation In Renewable Dominated Power

Systems With A Large Penetration Of Electric Vehicles

Miguel Carrion, Universidad de Castilla-La Mancha,

Avda Carlos III s/n, Toledo, Spain,

miguel.carrion@uclm.es,

Rafael Zárate-Miñano

Future power systems based on intermittent and asynchronous units may favor

frequency fluctuations owing to a) a high presence of generating units with

volatile power output, b) a reduction in the number of units participating in the

frequency regulation and c) a reduction in the kinetic energy stored in the

rotating parts of the system. In this context, we analyze the impact of using plug-

in electric vehicles to provide frequency regulation in renewable-dominated

power systems. This problem is formulated as a stochastic unit commitment that

takes into account the uncertainty of renewable resources and frequency

regulation capabilities. The proposed formulation is tested in a realistic case study.

4 - Developing A Decision Support Tool For Expanding Waste-to-

Energy Technology Within The Department Of Defense

Adam Haag, Lieutenant, Student, Naval Postgraduate School,

Naval Postgraduate School, 1 University Circle, Monterey, CA,

93943, United States,

achaag@nps.edu

This study seeks to improve the the DOD’s existing decision support tool with an

additional module, which may increase the diversity and breadth of Waste-to-

Energy technology within the DoD.

5 - Multiple UAV Assisted Power Network Damage Assessment

Jaeyoung Cho, Assistant Professor, Lamar University, 6195 N

Major Dr., Beaumont, TX, 77713, United States,

jcho@lamar.edu

Gino J Lim, Seonjin Kim

We presents a two-phase mathematical framework for efficient power network

damage assessment using unmanned aerial vehicle (UAV). In the first phase, a

two-stage stochastic integer programming optimization model is presented for

damage assessment in which the first stage determines the optimal UAV locations

anticipating an arrival of an extreme event, and the second stage is to adjust the

UAV locations, if necessary, when the arrival time of the predicted extreme event

becomes closer with updated information. UAV paths to scan the power network

are generated in the second phase while minimizing operating costs of the UAVs.

MA59

Cumberland 1- Omni

Network Design and Operations

Sponsored: Transportation Science & Logistics

Sponsored Session

Chair: Ali Asadabadi, George Mason University, College Park, College

Park, MD, 20783, United States,

ali.asadabadi@gmail.com

1 - The High Speed Train Timetable Planning Problem For The

Chinese Railways

Paolo Toth, University of Bologna, Bologna, Italy,

paolo.toth@unibo.it

We consider the Train Timetabling Problem (TTP) for the planning of high-speed

trains on the Beijing-Shanghai line. We are given a set of feasible timetables for

the trains already planned along the line, and the main goal consists of scheduling

as many additional trains as possible. We are allowed to modify the timetables of

the trains, even by changing their stopping patterns, i.e. by removing some stops.

A second objective is to obtain a regular schedule with respect to stopping

patterns. We propose an Integer Linear Programming Model and a heuristic

algorithm. Extensive computational experiments on real-world instances of the

Chinese Railways are reported.

2 - Optimal Transportation And Shoreline Infrastructure Investment

Planning Under Stochastic Climate Future

Ali Asadabadi, George Mason University - Fairfax,

Fairfax, VA, 22030, United States,

ali.asadabadi@gmail.com

,

Elise D Miller-Hooks

The problem of optimal long-term transportation investment to protect from and

mitigate against the impacts of climate change is modeled as a multi-stage,

stochastic, bi-level, mixed-integer program. A recursive noisy genetic algorithm is

presented to address large-scale applications. It is demonstrated on a Washington,

D.C. Greater Metropolitan area case study.

3 - Global Optimization Solution Methods For Transportation Network

Design Problems

David Z.W. Wang, Nanyang Technological University, 50 Nanyang

Avenue, Singapore, 639798, Singapore,

wangzhiweiI@ntu.edu.sg

Transportation network design problems (NDP), which determine the optimal

road expansion and addition plan with assumption of various user equilibrium

principles, are conventionally modelled into a bilevel programming or MPEC. The

NDPs are typically nonlinear and nonconvex. We develop global optimization

solution methods, applying various linearization and relaxation techniques, to

obtain the global optimal solution to the NDPs. Both continuous and discrete

NDPs are considered, while typical user equilibrium principles including

deterministic user equilibrium and stochastic user equilibrium will be employed.

4 - Optimal Layout Of Transshipment Facilities Under Traffic

Equilibrium In A Continuous Space

Zhaodong Wang, University of Illinois, Wright Street,

Urbana, IL, 61801, United States,

zwang137@illinois.edu

Yanfeng Ouyang

This talk focuses on generalizing the location-routing problem into one that

considers traffic congestion and equilibrium in a continuous space. We present a

new proof that a regular hexagon shape is optimal for facility service regions

under congestion. Numerical experiments are implemented to verify the

correctness of our analytical solution and theoretical results are used as a building

block to develop approximate solutions to more general heterogeneous cases.

MA59