Imperial College London

DrIvanStoianov

Faculty of EngineeringDepartment of Civil and Environmental Engineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 6035ivan.stoianov Website

 
 
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Assistant

 

Miss Judith Barritt +44 (0)20 7594 5967

 
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Location

 

408Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Pecci:2016:10.1007/s10589-016-9888-z,
author = {Pecci, F and Abraham, E and Stoianov, I},
doi = {10.1007/s10589-016-9888-z},
journal = {Computational Optimization and Applications},
pages = {201--223},
title = {Penalty and relaxation methods for the optimal placement and operation of control valves in water supply networks},
url = {http://dx.doi.org/10.1007/s10589-016-9888-z},
volume = {67},
year = {2016}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - In this paper, we investigate the application of penalty and relaxation methods to the problem of optimal placement and operation of control valves in water supply networks, where the minimization of average zone pressure is the objective. The optimization framework considers both the location and settings of control valves as decision variables. Hydraulic conservation laws are enforced as nonlinear constraints and binary variables are used to model the placement of control valves, resulting in a mixed-integer nonlinear program. We review and discuss theoretical and algorithmic properties of two solution approaches. These include penalty and relaxation methods that solve a sequence of nonlinear programs whose stationary points converge to a stationary point of the original mixed-integer program. We implement and evaluate the algorithms using a benchmarking water supply network. In addition, the performance of different update strategies for the penalty and relaxation parameters are investigated under multiple initial conditions. Practical recommendations on the numerical implementation are provided.
AU - Pecci,F
AU - Abraham,E
AU - Stoianov,I
DO - 10.1007/s10589-016-9888-z
EP - 223
PY - 2016///
SN - 1573-2894
SP - 201
TI - Penalty and relaxation methods for the optimal placement and operation of control valves in water supply networks
T2 - Computational Optimization and Applications
UR - http://dx.doi.org/10.1007/s10589-016-9888-z
UR - http://hdl.handle.net/10044/1/44607
VL - 67
ER -