Author(s): Daniele Biagio Laucelli; Francesco G Ciliberti; Luigi Berardi; Giuseppe Mauro; Orazio Giustolisi

Linked Author(s): Orazio Giustolisi

Keywords: Water distribution networks; Isolation valve system; Complex network theory; Centrality metrics; Reliability assessment

Abstract: Mechanical reliability of Water Distribution Networks (WDNs) depends on the Isolation Valve System (IVS). In fact, in the event of accidental disruptions or planned maintenance works, segments of the WDNs need to be temporarily disconnected by closing isolation valves to allow pipes repair. This maneuver modifies the WDN topology and relevant hydraulic behavior. In this paper a recent approach for IVS reliability based on the Complex Network Theory (CNT) has been applied. It couples the construction of the graph of segments and isolation valves generated by the IVS with the risk of segment interruptions, using several WDN-tailored centrality metrics. The study is demonstrated on a real WDN using a Digital Water Service developed ad hoc for enabling technicians and water utilities in targeting the most critical valves in case of failure and thereby defining a lineup for valves inspections and maintenance.

DOI: https://doi.org/10.1088/1755-1315/1136/1/012044

Year: 2022