Deterioration of water distribution systems and the optimal allocation of limited funds for their rehabilitation represent crucial challenges for water utility managers. Decision makers should be provided with a set of "informed" solutions to select the best rehabilitation plan with regard to available resources and management strategies. In a risk-based scenario, such an approach should result in an element-wise prioritization scheme based on individual pipe rehabilitation/replacement urgency. This article describes a framework for devising a short-term decision support tool for pipe replacement. The approach allows for the introduction of economic, technical and management rationales as separate objectives to produce a pipe-wise prioritization scheme which is achieved by ranking pipes selected during a multi-objective evolutionary optimization of replacement scenarios. Such a procedure overcomes the drawbacks of relying on solutions obtained by evolutionary multi-objective optimization. The effectiveness of the entire framework is demonstrated on a real UK water distribution system.
|Titolo:||Exploiting multi-objective strategies for optimal rehabilitation planning|
|Data di pubblicazione:||2007|
|Nome del convegno:||Computer and Control in Water Industry, CCWI2007|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|