Lost in optimisation of water distribution systems? A literature review of system operation

Environmental Modelling & Software, Journal Year: 2017, Volume and Issue: 93, P. 209 - 254

Published: March 30, 2017

Language: Английский

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The shared-taxi problem: Formulation and solution methods

Transportation Research Part B Methodological, Journal Year: 2014, Volume and Issue: 70, P. 303 - 318

Published: Oct. 24, 2014

Language: Английский

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Mathematical programming techniques in water network optimization

European Journal of Operational Research, Journal Year: 2014, Volume and Issue: 243(3), P. 774 - 788

Published: Dec. 31, 2014

Language: Английский

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Optimal Water–Power Flow-Problem: Formulation and Distributed Optimal Solution

IEEE Transactions on Control of Network Systems, Journal Year: 2018, Volume and Issue: 6(1), P. 37 - 47

Published: Jan. 12, 2018

This paper formalizes an optimal water–power flow (OWPF) problem to optimize the use of controllable assets across power and water systems while accounting for couplings between two infrastructures. Tanks pumps are optimally managed satisfy demand improving grid operations; network, ac power-flow formulation is augmented accommodate controllability pumps. Unfortunately, physics governing operation infrastructures coupling constraints leads a nonconvex (and, in fact, NP-hard) problem; however, after reformulating OWPF as nonconvex, quadratically constrained quadratic problem, feasible point pursuit-successive convex approximation approach used identify solutions. In addition, distributed solver based on alternating direction method multipliers enables operators pursue individual objectives respecting networks. The merits proposed demonstrated case distribution feeder coupled with municipal network.

Language: Английский

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Demonstrating demand response from water distribution system through pump scheduling

Applied Energy, Journal Year: 2016, Volume and Issue: 170, P. 377 - 387

Published: March 11, 2016

Significant changes in the power generation mix are posing new challenges for balancing systems of grid. Many these secondary electricity grid regulation services and could be met through demand response (DR) services. We explore opportunities a water distribution system (WDS) to provide with pump scheduling evaluate associated benefits. Using benchmark network mechanisms available UK, benefits assessed terms reduced green house gas (GHG) emissions from due displacement more polluting sources additional revenues utilities. The optimal problem is formulated as mixed-integer optimisation solved using branch bound algorithm. This formulation finds level capacity commit provision range reserve energy frequency schemes offered UK. For first time we show that DR WDS can offer financial operators while providing less greenhouse than competing technologies. Monte Carlo simulation based on data 2014, demonstrate cost storage compensation equivalent supply. GHG also shown smaller those contemporary technologies such open cycle turbines. considered vary their duration well commitment requirements. viability service committed continuously strongly dependent utilisation pumps tariffs used by Through analysis scenarios incentives real market data, how participate scheme generate gains environmental

Language: Английский

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Energy-Optimal Pump Scheduling and Water Flow

IEEE Transactions on Control of Network Systems, Journal Year: 2017, Volume and Issue: 5(3), P. 1016 - 1026

Published: Feb. 16, 2017

This paper focuses on the optimal operation of water supply networks. We model networks using hydraulic constraints and formulate a joint pump scheduling flow problem (OWF) characteristics variable speed pumps. OWF is mixed-integer nonlinear program. nonconvex, hence NP-hard. To compute an exact solution OWF, we first focus feasibility region propose second-order cone relaxation for OWF. prove that proposed several relevant network topologies. then objective function in show some energy metrics, can be transformed into Furthermore, ADMM-based algorithm to suboptimal solutions lower bounds value when nonconvex. Finally, consider real-world network, demonstrate effectiveness computing schedules flows.

Language: Английский

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Electric Power Industry: Operational and Public Policy Challenges and Opportunities

Production and Operations Management, Journal Year: 2019, Volume and Issue: 28(11), P. 2738 - 2777

Published: July 8, 2019

The electric power industry is undergoing dramatic change driven by rapid technological transformation, concern over climate change, and evolving market structures. As a result, there need for new models to help the better utilize resources in time of increasing uncertainty government policy makers understand impacts their regulatory decisions. We provide structured review operations research management science literatures describe current operational issues industry, with particular focus on surrounding electricity design, renewable integration, effects infrastructure, rise powered vehicles, energy storage, growing interdependence between natural gas sectors. identify frontier classify existing into clusters respect managerial addressed. offer forecast where going some important public issues. Finally, we highlight opportunities discuss how community can contribute considering interaction considerations policy.

Language: Английский

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Optimal Scheduling of Water Distribution Systems

IEEE Transactions on Control of Network Systems, Journal Year: 2019, Volume and Issue: 7(2), P. 711 - 723

Published: Sept. 5, 2019

With dynamic electricity pricing, the operation of water distribution systems (WDS) is expected to become more variable. The pumps moving from reservoirs tanks and consumers can serve as energy storage alternatives if properly operated. Nevertheless, optimal WDS scheduling challenged by hydraulic law, according which pressure along a pipe drops proportionally its squared flow (WF). (OWF) task formulated here mixed-integer nonconvex problem incorporating constraints, critical for fixed-speed pumps, tanks, reservoirs, pipes. constraints OWF are subsequently relaxed second-order cone constraints. To restore feasibility original penalty term appended objective OWF. modified be solved program, analytically shown yield WDS-feasible minimizers under certain sufficient conditions. Under these conditions, suitably weighting term, attain arbitrarily small optimality gaps, thus providing solutions. Numerical tests using real-world demands prices on benchmark demonstrate relaxation exact even setups where conditions not met.

Language: Английский

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A convex mathematical program for pump scheduling in a class of branched water networks

Applied Energy, Journal Year: 2016, Volume and Issue: 185, P. 1702 - 1711

Published: Jan. 9, 2016

Language: Английский

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Digital Twin-Based Pump Station Dynamic Scheduling for Energy-Saving Optimization in Water Supply System

Water Resources Management, Journal Year: 2024, Volume and Issue: 38(8), P. 2773 - 2789

Published: Feb. 21, 2024

Language: Английский

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