Robust Optimization of Demand Response Power Bids for Drinking Water Systems

Mkireb, Chouaib; Dembélé, Abel; Jouglet, Antoine; Denœux, Thierry

doi:10.1016/j.apenergy.2019.01.124

Cited by 36 publications

(12 citation statements)

References 34 publications

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“…however, peak periods with high energy prices experience minimized pumping operations to meet water demands at minimum cost. DWSs flexibility is increasing with the size of tanks: the larger a tank is, the more it has flexibility for operational management [10]. Water tanks and reservoirs can thus be assimilated to electric batteries because they implicitly allow for electricity storage [10].…”

Section: Energy Flexibilitymentioning

confidence: 99%

“…DWSs flexibility is increasing with the size of tanks: the larger a tank is, the more it has flexibility for operational management [10]. Water tanks and reservoirs can thus be assimilated to electric batteries because they implicitly allow for electricity storage [10]. Furthermore, variable-speed pumps can adapt their flow rate and energy consumption to the needs, providing additional flexibility to DWSs [11].…”

Section: Energy Flexibilitymentioning

confidence: 99%

“…The dispatching centre is in charge 24 h a day for the proper functioning of water system equipment. This operational management of DWSs is subject to several constraints that can be summarized as follows [10]:…”

Section: Operational Managementmentioning

confidence: 99%

“…The planning horizon used is 24 h starting at 06:00 and the time step is set to 1 h. We consider that the water utility perfectly anticipates spot market prices and that the main issue is to decide whether to bid on the market or not. The modelling approach used in this section is mainly derived from our previous work [9], [10].…”

Section: Dr For Water Systems Managementmentioning

confidence: 99%

See 3 more Smart Citations

Flexibility of drinking water systems: An opportunity to reduce CO₂ emissions

Mkireb¹,

Dembélé²,

Denœux³

et al. 2019

Int. J. EQ

Self Cite

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Drinking water systems (DWSs) are huge electricity consumers, mainly due to pumping operations. In these systems, electricity costs represent approximately one-third of the total operating costs. because of the environmental impact of electricity generation worldwide (coal, gas, and diesel), water systems also implicitly contribute to global warming. however, these systems have flexibility thanks to water storage structures (tank and reservoirs) and variable speed pumps. The flexibility of DWSs is generally used to optimize energy costs. Furthermore, this flexibility can also be used to provide an environmental and operational service for the power system, by reducing peak power load and the volume of energy transactions on wholesale markets. Indeed, peak power reduction can be sold by water utilities on electricity markets, preventing the production of an equivalent amount of additional energy. In France, peak hours require a massive use of fossil energy sources, which makes electricity production at these periods extremely expensive, both economically and ecologically. using a mathematical optimization model, we optimize the management of these peak periods by shifting load at off-peak hours and selling the reduced energy on the French wholesale energy market. In this paper, we explore the ecological benefits that water systems could provide through this optimization process. We evaluate the cO₂ emissions that can be effectively reduced on three real DWSs in France. For these three systems, avoided cO₂ emissions were estimated at 2,190 kg/day for the largest system and 194 kg/day for the smallest one, which is equivalent to the emission of 145-1620 cars during 10 km of driving. We also evaluate, based on some hypotheses, the potential for cO₂ reduction from water systems at the French scale.

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Section: Energy Flexibilitymentioning

confidence: 99%

Section: Energy Flexibilitymentioning

confidence: 99%

Section: Operational Managementmentioning

confidence: 99%

Section: Dr For Water Systems Managementmentioning

confidence: 99%

See 2 more Smart Citations

Flexibility of drinking water systems: An opportunity to reduce CO₂ emissions

Mkireb¹,

Dembélé²,

Denœux³

et al. 2019

Int. J. EQ

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition, some utilities are also involved in electrical demand-side management schemes, where process operations are adjusted in response to real-time energy market signals. Though the scale of these schemes are not well-reported likely due to commercial reasons, theoretical works have shown the economic benefits of such mechanisms could be significant [15][16][17].…”

mentioning

confidence: 99%

An Analysis of Electricity Consumption Patterns in the Water and Wastewater Sectors in South East England, UK

Majid¹,

Cardenes²,

Zorn³

et al. 2019

Preprint

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The water and wastewater sectors are energy-intensive, and so a growing number of utility companies are seeking to identify opportunities to reduce energy use. Though England’s water sector is of international interest, in particular due to the early experience with privatisation, for the time being very little published data on energy usage exists. We analyse telemetry data from Thames Water Utilities Ltd. (TWUL), which is the largest water and wastewater company in the UK and serves one of the largest mega-cities in the world, London. In our analysis, we (1) break down sectoral energy use into their components, (2) present a statistical method to analyse the long-term trends in use, as well as the seasonality and irregular effects in the data, (3) derive energy-intensity (kWh m3) figures for the system, and (4) compare the energy-intensity of the network against other regions in the world. Our results show that electricity use grew during the period 2009 to 2014 due to capacity expansions to deal with growing water demand and storm water flooding. The energy-intensity of the system is within the range of reported figures for systems in other OECD countries. Plans to improve the efficiency of the system could yield benefits in lower the energy-intensity, but the overall energy saving would be temporary as external pressures from population and climate change are driving up water and energy use.

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Leveraging thewater‐energynexus to derive benefits for the electric grid throughdemand‐sidemanagement in the water supply and wastewater sectors

et al. 2021

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Leveraging the potential flexibility of large electrical loads has become an attractive option for maintaining grid reliability, especially in electric grids with high penetrations of variable renewable energy. The water sector is a particularly attractive option for demand‐side flexibility due to its vast water storage infrastructure, large interruptible pumping loads, and energy generation opportunities. Shifting the timing of water supply and wastewater utility operations can reduce peak load and temporally align energy‐consuming activities with periods of cheap electricity prices and/or high renewable energy generation. This paper presents a general overview of demand‐side management strategies in water and wastewater systems, focusing primarily on demand‐response measures. We find that while there is consensus in the literature about the potential for water systems to provide flexible demand‐side management services, there is a need for developing comprehensive water‐energy models to examine the value of load management as a source of revenue for water utilities and as a source of flexibility for the electric grid. More experimental studies and simulation efforts are also needed to address the technical complexities and water quality concerns associated with interrupting water and wastewater utility operations. This article is categorized under: Engineering Water > Sustainable Engineering of Water Engineering Water > Planning Water

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Robust Optimization of Demand Response Power Bids for Drinking Water Systems

Cited by 36 publications

References 34 publications

Flexibility of drinking water systems: An opportunity to reduce CO₂ emissions

Flexibility of drinking water systems: An opportunity to reduce CO₂ emissions

An Analysis of Electricity Consumption Patterns in the Water and Wastewater Sectors in South East England, UK

Leveraging thewater‐energynexus to derive benefits for the electric grid throughdemand‐sidemanagement in the water supply and wastewater sectors

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Robust Optimization of Demand Response Power Bids for Drinking Water Systems

Cited by 36 publications

References 34 publications

Flexibility of drinking water systems: An opportunity to reduce CO2 emissions

Flexibility of drinking water systems: An opportunity to reduce CO2 emissions

An Analysis of Electricity Consumption Patterns in the Water and Wastewater Sectors in South East England, UK

Leveraging thewater‐energynexus to derive benefits for the electric grid throughdemand‐sidemanagement in the water supply and wastewater sectors

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Product

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Flexibility of drinking water systems: An opportunity to reduce CO₂ emissions

Flexibility of drinking water systems: An opportunity to reduce CO₂ emissions