Multi-agent control system for a municipal water system

2020

Water supply remains one of globally recognised challenging problems due to the scarcity in the sources, the environmental concerns and hardness in access to clean and fresh water. Besides, energy consumption is also under focus as much as access to fresh water is. Substantial research efforts have been spent to produce good solutions for each of these global problems. However, there is not much investigated on considering both issues together in the same problems structure. This paper focuses on how the efficiency of water supply in a middle size water reach city can be optimised with respect to a number of key performance indicators including energy efficiency, given a variety of water resources including constructed and natural reservoirs. A particular case scenario is considered and its mathematical model is developed in order to optimally plan and control fresh water supply to the metropolitan area of the city introduced in the scenario. It is assumed that the fresh water is supplied from a number of different types of resources/reservoirs; natural lakes, constructed reservoirs (dams) etc. The proposed framework also includes a multi agent approach to manage the system in water supply control phase.

2016

Volume 5, Issue 1, January – February 2016 Page 5 Abstract This paper presents an approach to the creation of an agentbased system that aims to presenting an application for decisions in ecosystem analysis. The issue of drinking water quality is very important in the world, so, an agent based web decision support infrastructure (WATERDSS) has been designed and implemented to provide an access to simulation and experimental results on flow waterquality conditions and to offer sophisticated scenario testing capabilities for research and drinking water treatment plant planning through the graphical user interface with known controls. The design of drinking water treatment plant in WATERDSS depends on the characteristic of raw water and the water quality parameters. We presented many strategies to manage water quality and water pollution to protect human health by building an agent based web decision support system to help an authority of water supply stations to find information about ...

2009

Water distribution systems are extremely complex assets. The complexity of these systems is continually increasing from the point of view of technical management. Most water companies do not have the necessary global vision of their production and distribution, and lack suitable tools to control and operate their systems. As a result, an increasing number of projects examining suitable methods to divide water distribution networks into district-metered areas (DMA) are in progress in many cities worldwide. Division into DMAs aims at splitting large interconnected distribution network into smaller and virtually independent networks. Division into DMAs enables action to be taken to improve the control of important aspects of water distribution, such as leaks and water quality. Due to the complexity of the problem, especially for large systems, efficient techniques are required. In this paper, we introduce a multi-agent approach that takes advantage of the distributed nature of water di...

The integrated management of Urban Wastewater Systems (UWS) encloses characteristics of complex systems with dynamic processes. The UWS is composed by several heterogeneous and interconnected elements that as a whole exhibit one or more properties not obvious from the properties of the individual parts. Moreover, these elements interact between them as well as with the environment, varying its state.

Water

Water and wastewater services have been provided through centralised systems for more than a century. The operational and management approaches of the water systems face challenges induced by population growth, urbanisation, and ageing infrastructure. Recent advancements in water system engineering include the development of intelligent water networks. These intelligent networks address management and operational challenges associated with pressure and flow variations in the water network and it reduces the time for identification of pipe bursts and leakages. Research is required into the development of intelligent water networks to ensure consistent data collection and analysis that can filter and aggregate into actionable events to reduce water leakage, leakage cost, customer disruptions, and damages. Implementation of an intelligent algorithm with an integrated Supervisory Control and Data Acquisition (SCADA) system, high-efficiency smart sensors, and flow meters, including a tra...

2011 44th Hawaii International Conference on System Sciences, 2011

Cyber-physical systems, and the intelligent decision support systems that they enable, carry the promise of greater efficacy in environmental management. The complexity of the physical infrastructure subject to decisions by environmental management systems is often an impediment to this efficacy. Other challenges include fundamental differences in the operation of cyber and physical components, and significant interdependency among the cyber components that facilitate decision support and the physical components they control. The agentbased computing paradigm is proposed for surmounting these challenges, due to the flexibility of software agents as autonomous and intelligent decision-making components. In this paper, we utilize an agent-based system to illustrate the application of game theory to decision support for environmental management, in the context of intelligent water distribution. Simulation results are presented to validate the model proposed, and to investigate the effect of various model parameters on water allocation.

2008

Abstract Various recently intensively investigated approaches, based on certain type of embedded intelligence exploitation, can be used also in the area of water management. A big class of them, based mainly on various types of multi-agent systems, are useful for incorporating complexity in ecosystem modelling in general. By incorporating a high degree of social and spatial heterogeneity multi-agent systems could also represent “nested hierarchies” and phenomena emerging across different scales.

IFAC Proceedings Volumes, 1998

A dynamical mathematical model of a water supply plant based on lumped parameters is described. A concept of its control system is proposed that ensures output pressure stabilisation under conditions of variable water consumption and variable water recourses. The control system consists of inner control loops which control the flow of each pump station and of a superimposed control loop that controls the output pressure of the water supply plant. The pressure controller calculates the cumulative reference value of the water flow for all controlled pumps and from this value an algorithm for the flow distribution calculates the reference flow for each inner loop, taking into account the level of water accumulation in each water well. Control performances of output pressure obtained by a conventional PI controller and a fuzzy logic based controller are compared.

IFAC Proceedings Volumes, 2004

This paper reports preliminary results of an ongoing research project that demonstrates distributed architecture based on agents applied in the area of industrial automation. This architecture has been built to achieve the goals of improved survivability and readiness of US Navy shipboard systems. We show benefits of multiagent systems in the area where flexibility, survivability, and scalability are required. We present the architecture of multi-agent system, internal structure of agent, planning technique based on plan templates, fault-tolerant structure of middle-agents, and development environment for agents.

Simulation, 2005

In this paper we present an agent based simulator for the integrated fresh-water assessment in a geographical area. It has been developed and successfully applied to the metropolitan Region of Barcelona, and it is currently applied to the Metropolitan Area of Valladolid. Such simulator provides the policy makers with an additional tool to evaluate alternative water policies in different scenarios. The design and the validation of the model are based on participatory processes with a platform of the representative stakeholders.