Supergrid Institute

Université Grenoble Alpes

Institut Polytechnique De Grenoble

Université De Paris Xi Paris Sud

Centre National De La Recherche Scientifique

Alstom Technology Limited

Alberto Bertinato

Abdelkrim Benchaib

Wolfgang Grieshaber

Alain Girodet

Bruno Luscan

Christophe Creusot

Yang Yang

Kosei Shinoda

Bertrand Raison

Pascal Tixador

William Leon Garcia

Dieynaba Loume

Paul Verrax

Michel Kieffer

Nathan Alglave

Eric Courbon

Alessandro Tundo

Fabrizio Callari

Michel Mermet Guyennet

Pascal Torwelle

Manuel Colmenero

Serge Poullain

Ludovic Boyer

Issam Ait Brahim

Dieynaba Sakiliba Loume

Gérard Drevon

Gwenäel Marquezin

Boussaad Ismail

Serge Poulain

The invention relates to a transient based method for identifying faults in an electric power transmission and/or distribution system () having at least one current transmission line (L, L, L) comprising the following steps: —generation of a physical model of the at least one current transmission line (L, L, L), the physical model depending on the fault parameters and describing the behavior of voltage and/or current transients due to the fault in the at least one current transmission line, fault parameters comprising a fault location parameter on said current transmission line (L, L, L) and a fault impedance parameter, —measurement of voltage and/or currents evolution at least at one specific location in the said power system (), —iterative simulation of the voltage and/or current evolution by the physical model at the measurement point with a set of fault parameters where at each step of iteration, simulated and measured voltage and/or current evolutions are compared and the set of fault parameters is adapted according to a convergence criterion, —identification of a fault with its fault parameters when convergence of the measured voltage and/or current evolutions and simulated voltage and/or current evolutions is reached in a limited number of iterations.

Transient based method for identifying faults in a high / medium voltage electric power transmission system

A control method allows the control of an installation for transmitting electricity comprising a DC transmission network including a group of electricity transmission lines that are linked to one another. The method allows the opening of at least one N-1 safety system, for each safety system being opened, the contribution to the flow of current through the group of transmission lines, originating from the converter station associated with the safety system that is opened, is removed. Furthermore, the method also allows a search for the short-circuit fault in order to identify the faulty transmission line, and an operation, implemented after identification of the faulty transmission line by the search step, of isolating the faulty transmission line by opening the line circuit breakers of the faulty transmission line.

Method for controlling an installation allowing DC current to be transmitted in a network while protecting said network from a short circuit fault

A method of protecting a high-voltage network comprising the steps for maintaining first controlled switches closed and second controlled switches open; measuring voltage and current on high-voltage interfaces; communicating the direction of the current to the other end of a high-voltage line; for each node: identifying a fault; verifying that the current is lower than the current interruption capability of the high-voltage interface switch and opening this switch.

Protection for an HVDC network

An item of interconnection equipment for a high-voltage DC grid includes first and second terminals for connection to first and second lines of a high-voltage DC grid, a third terminal for connection to a local station or a line of the high-voltage grid, a node connected to the first to third terminals, a first superconductor current limiter and a first controlled switch connected in series between the first terminal and the node, a second superconductor current limiter and a second controlled switch connected in series between the second terminal and the node, a third superconductor current limiter and a third controlled switch connected in series between the third terminal and the node, and a current injector configured to inject an electrical current into the node.

Interconnection equipment for a high-voltage DC grid

A current-breaking device for high-voltage direct current includes a main conduction-line and a secondary conduction-line connected in parallel between its terminals. The main conduction-line comprises a first controlled-switch and a circuit connected in series. The circuit comprises a first current-limiter and a first capacitor connected in parallel. The secondary conduction-line comprises a second controlled-switch. These conduction lines cooperate to form an oscillating circuit that oscillates with an amplitude that is at least equal to limiting current passing through the current limiter.

High voltage DC current tripout device

Growing community of inventors

Lyons, France

Alberto Bertinato