O. Devaux

Électricité de France (EDF) | EDF

Existing electricity distribution management systems (DMS) have been designed using operational and algorithmic procedures that are highly centralised. As more of the distribution network becomes active, accurately estimating the state of the system becomes essential and therefore DMS must include functions to achieve the required near to real-time...

Distribution networks are facing significant technical constraints and uncertainties. Distribution network operators (DNOs) need to improve the quality of service, integrate high penetrations of distributed generation (or DG, which includes highly variable wind and solar generation), forecast energy flow, and improve efficiency, all while maintaini...

Today, neutral compensation based on Petersen coils is being applied in many MV electrical networks. The main reasons for this are : -an important expansion of the underground net-work in rural environment. This leads to high phase-to-ground capacities of the outgoing feed-ers, which increases fault currents in networks using impedant grounding, -a...

This article deals with the reconfiguration of electrical networks in order to reduce the energy losses. A special attention is paid to the choice of the reconfiguration periodicity linked to the load and production curves, the presence of dispersed generation and the capacities of the existing or future network devices. After a presentation of the...

This paper deals with Distribution Network reconfiguration for loss minimization. A special attention is paid to the partially meshed operation. To solve this combinatorial problem, a set of optimization methods is mandatory to overcome this problem (losses reduction and topological constraints fulfillment). After a survey of some optimization algo...

Distribution networks are facing significant technical constraints that must be resolved at minimum cost: regulatory and customer pressures to improve reliability of supply, reduction of losses and the technical challenges related to the connection of an increasing amount of distributed generation. The use of new approaches is therefore being encou...

The development of automated metering management (AMM) will provide the DSO with a wealth of new data, a brand new communication infrastructure covering the whole network, and new means of controlling loads.

A new type of network namely “Active Network” is foreseen as a relevant evolution of the current passive distribution networks and might be a technically and economically feasible solution to facilitate Decentralized Energy Resources (DERs) interconnections in a deregulated energy market. But one of the difficulties of related studies consists in t...

The major change in the last decade concerning distribution network is related to the penetration of distributed generation (DG). The current practice in France concerning the connection of DG was to fit the network to the worse case of use of DG to avoid any problem. This approach will reach his limits and many developments will be necessary to op...

In the future, with the high penetration level of the distributed generation, their decoupling from network during the fault will eventually cause critical consequences. In order to avoid such situation, it is necessary to perform the transient stability analysis. The paper investigates the hybrid methods for fast transient stability assessment whi...

Development of distributed generation, energy efficiency and demand-side management measures, economical and technical constraints to meet the performance targets fixed by the regulatory bodies are just some of the new challenges facing distribution system operators in the smart grid development context. Simulation capabilities are playing a major...

Automation offers new margins to improve the performance of distribution operation and control. Additional distribution automation is particularly beneficial when it allows the network operators to use the dispersed generation and enhanced load control capabilities and in some case postpone new network upgrades. Such improved flexibility and contro...

This paper deals with distribution network (DN) reconfiguration for loss minimization. To solve this combinatorial problem, a genetic algorithm (GA) is considered. In order to enhance its ability to explore the solution space, efficient genetic operators are developed. After a survey of the existing DN topology description methods, a theoretical ap...

As the penetration level of the distributed generations on distribution network will increase, they must take their share of responsibility in the system security and provide flexibility and controllability necessary to support secure system operation. However, following the occurrence of large disturbances on the network (short-circuits, line outa...

A high penetration of distributed generation (DG) may influence the operation and control of the distribution system and the transmission system, leading to technical issues that must be identified and analyzed. The distributed generators are small or medium scale units connected to the low or medium voltage networks (LV or MV). Due to their low in...

A complete framework dealing with power line communication in medium voltage network is proposed. Based on path loss measurements, a complete characterisation of inductive couplers is performed. After a brief recall of inductive coupling techniques, we address the issue of power switching influence on inductive coupler performances. Finally, we sho...

A few years ago, the study and simulation of fast power system phenomena in real-time, was the private ground of analog simulators. But the limitation in modeling, the complexity and the costly maintenance of these simulators was a brake upon their development and made their profitability uncertain. The testing of power system equipment such as con...

Power systems rely more and more on a wide range of equipment that regulate power plants, voltage and reactive power, or protect the grid against malfunctions.

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