Home Tags Posts tagged with "Energy Management"

Energy Management

José Horta, Daniel Kofman, David Menga, Mathieu Caujolle

Proc. of the ACM e-Energy Conference, Karlsruhe, Germany, June 2018.
DOI: 10.1145/3208903.3208937

Abstract: The limited capacity of distribution grids for hosting renewable generation is one of the main challenges towards the energy transition. Local energy markets, enabling direct exchange of energy between prosumers, help to integrate the growing number of residential photovoltaic panels by scheduling flexible demand for balancing renewable energy locally. Nevertheless, existing scheduling mechanisms do not take into account the phases to which households are connected, increasing network unbalance and favoring bigger voltage rises/drops and higher losses. In this paper, we reduce network unbalance by leveraging market transactions information to dynamically allocate houses to phases using solid state switches. We propose cost effective mechanisms for the selection of households to switch and for their optimal allocation to phases. Using load flow analysis we show that only 6% of houses in our case studies need to be equipped with dynamic switches to counteract the negative impact of local energy markets while maintaining all the benefits. Combining local energy markets and dynamic phase switching we improve both overall load balancing and network unbalance, effectively augmenting DER hosting capacity of distribution grids.

Sawsan Al Zahr

[Invited paper] Proc. of the IEEE MENACOMM Confrence, Jounieh, Lebanon, Apr. 2018
DOI: 10.1109/MENACOMM.2018.8371044

Abstract: Along with the growing penetration of renewable energy sources, demand side management (DSM) is becoming a key component of future energy systems such as smart grids. DSM aims at balancing the demand for power with intermittent renewable energy sources such as wind and solar units. DSM deploys various mechanisms to influence customer’s capability and willingness to modify their power consumption according to the utility’s energy production and the distribution capacity. DSM aims at either saving energy in sustainable manner (i.e. energy response) or/and shifting the time of energy use to off-peak hours (i.e. demand response). Indeed, DSM does not necessarily reduce the total customer’s power consumption but reshapes consumption patterns. Hence, DSM is expected to reduce the need for investments in networks and power plants in order to meet peak demands. In this paper, we propose an advanced demand response (DR) solution for individual households. Considering a household equipped with various domestic loads, we aim at optimally scheduling the day-ahead power consumption under timevariable rates while taking advantage of modular and deferrable loads, e.g. electric vehicle. Our proposal is numerically illustrated through real-life scenarios, elaborated using an existing simulator of human behavior regarding power consumption.

Sawsan Al Zahr, Elias A. Doumith, Philippe Forestier

Proc. of the IEEE Globecom Confrence, Singapore, Singapore, Dec. 2017
DOI: 10.1109/GLOCOM.2017.8255068

Abstract: As the global energy policy is changing from a demand-driven to a supply-driven approach, demand side management (DSM) is becoming a key component of future energy systems. Indeed, it helps power grids’ operators to balance the demand for power with intermittent renewable energy sources such as wind and solar units. DSM consists in optimizing/adapting the power consumption to meet the production through various methods such as improving the energy efficiency by using better equipment and materials, implementing demand response (DR) solutions, etc. DSM mechanisms do not necessarily reduce the total power consumption, but reshape the consumption pattern. Hence, DSM is expected to reduce the need for investments in networks and power plants in order to meet peak demands. In this paper, we propose an advanced DR solution for individual households. Considering a household equipped with various domestic loads, we aim at optimally scheduling the day-ahead power consumption under time-variable rates while taking advantage of modular and deferrable loads, e.g., electric vehicle. For this purpose, we propose an exact approach to solve the problem of energy management within a household under both system’s and user’s constraints. Our proposal is numerically validated through real- life scenarios, elaborated using an existing simulator of human behavior regarding power consumption.

0 951
Jose Horta, Daniel Kofman, David Menga. Télécom ParisTech ISBN 2016D002 Feb. 2016.

Abstract: The electricity distribution grid was not designed to cope with load dynamics imposed by high penetration of electric vehicles, neither to deal with the increasing deployment of distributed Renewable Energy Sources. Distribution System Operators (DSO) will increasingly rely on flexible Distributed Energy Resources (flexible loads, controllable generation and storage) to keep the grid stable and to ensure quality of supply. In order to properly integrate demand-side flexibility, DSOs need new energy management architectures, capable of fostering collaboration with wholesale market actors and prosumers. We propose the creation of Virtual Distribution Grids (VDG) over a common physical infrastructure, to cope with heterogeneity of resources and actors, and with the increasing complexity of distribution grid management and related resources allocation problems. Focusing on residential VDG, we propose an agent-based hierarchical architecture for providing Demand Side
Management services through a market-based approach, where households transact their surplus/lack of energy and their flexibility with neighbours, aggregators, utilities and DSOs. For implementing the overall solution, we consider fine-grained control of smart homes based on Internet of Things technology. Homes seamlessly transact self-enforcing smart contracts over a blockchain-based generic platform. Finally, we extend the architecture to solve existing problems on smart home control, beyond energy management.