Imperial College London


Faculty of EngineeringDepartment of Civil and Environmental Engineering

Reader in Water Systems Engineering



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




Miss Judith Barritt +44 (0)20 7594 5967




408Skempton BuildingSouth Kensington Campus






BibTex format

author = {Blocher, C and Pecci, F and Stoianov, I},
doi = {10.1061/(ASCE)HY.1943-7900.0001721},
journal = {Journal of Hydraulic Engineering},
pages = {04020025--1--04020025--13},
title = {Localizing leakage hotspots in water distribution networks via the regularization of an inverse problem},
url = {},
volume = {146},
year = {2020}

RIS format (EndNote, RefMan)

AB - The ill-posed inverse problem for detecting and localizing leakage hotspots is solved using a novel optimization-based method which aims to minimize the difference between hydraulic measurement data and simulated steady states of a water distribution network. Regularization constrains the set of leak candidate nodes obtained from a solution to the optimization problem. Hydraulic conservation laws are enforced as nonlinear constraints. The resulting nonconvex optimization problem is solved using smooth mathematical optimization techniques. The solution identifies leakage hotspot areas, which can then be further investigated with alternative methods for precise leak localization. A metric is proposed to quantitatively assess the performance of the developed leak localization approach in comparison with a method that uses the sensitivity matrix. In addition, we propose a strategy to select the regularization parameter when large-scale operational networks are considered. Using two numerical case studies, we demonstrate that the proposed approach outperforms the sensitivity matrix method, with regards to leak isolation, in most single leak scenarios. Moreover, the developed method enables the localization of multiple simultaneous leaks.
AU - Blocher,C
AU - Pecci,F
AU - Stoianov,I
DO - 10.1061/(ASCE)HY.1943-7900.0001721
EP - 1
PY - 2020///
SN - 0733-9429
SP - 04020025
TI - Localizing leakage hotspots in water distribution networks via the regularization of an inverse problem
T2 - Journal of Hydraulic Engineering
UR -
UR -
UR -
VL - 146
ER -