Nos actualités
Ahmed Zama honored with the IEEE “Doctorate Laureate” for his thesis work
Every year the French chapter of IEEE Power & Energy Society (PES), in collaboration with SEE (Society of Electricity, Electronics and Information and Communication Technologies), recognises outstanding PhD theses and hands out the “outstanding engineer of the year” prize at an annual evening ceremony. This Wednesday the 9th of October, Ahmed Zama was honoured with the IEEE “Doctorate Award” for his thesis work on “Modeling and Control of Modular Multilevel Converters (MMCs) for HVDC applications”.
Use of Unbalanced Insulation for the Limitation of Double-Pole Lightning Flashovers in Double Circuit HVDC Overhead Lines
Lightning studies are a critical part of any system involving overhead lines. As HVDC technologies develop, new problems and questions arise regarding the lightning performance of HVDC overhead lines. For instance, the installation of two separate HVDC circuits on the same transmission tower may become a popular alternative for the uprating of old AC lines to take advantage of the already existing Right-of-Ways. Double-pole flashovers may be particularly constraining in double circuit HVDC systems, since they could lead to the loss of both circuits at the same time due to the flashover of both poles of the same polarity having the same amplitude at all times (which is not the most likely case in AC systems). This corresponds to a 100% of loss of transmitted power, which could represent a threat for the system stability. This constitutes the main motivation for this work.
Stage dating is back at SuperGrid Institute!
Stage dating is back at SuperGrid Institute! Get your CV ready and come along to apply for one, or several, of our internships on Thursday the 24th October at our premises in Villeurbanne (69). Our internship tutors will be available for a whole afternoon, seeking new talents to help us shape the power transmission system of tomorrow!
The SuperGrid Institute girls are #1 in their category at the Inter-company Challenge!
This Tuesday, the 24th of September, the Villeurbanne Inter-company Challenge took place in Parc Miribel, France. Once again, SuperGrid Institute took part in the relay race with 8 registered teams and for the first time, they claimed a place on the podium! Congratulations to Anaïs, Carole, Eleonore and Kirsty, who won first place in the women’s team category with a time of 0h46'35''.
The SuperGrid Institute girls are #1 in their category at the Inter-company Challenge!
This Tuesday, the 24th of September, the Villeurbanne Inter-company Challenge took place in Parc Miribel, France. Once again, SuperGrid Institute took part in the relay race with 8 registered teams and for the first time, they claimed a place on the podium! Congratulations to Anaïs, Carole, Eleonore and Kirsty, who won first place in the women’s team category with a time of 0h46'35''.
The EPE flag handover at EPE’19, Genova: SuperGrid Institute takes the reins for EPE 2020 ECCE Europe in Lyon, France
At the closing session, Abdelkrim Benchaib, General Chairman of EPE’20, received the EPE flag, on stage, from Mario Marchesoni, General Chairman of EPE’19, in the presence of Leo Lorenz, President of the EPE association. During this conference, Abdelkrim Benchaib was also elected as a member of the executive committee of EPE ECCE Europe for 4 more years.
The EPE flag handover at EPE’19, Genova: SuperGrid Institute takes the reins for EPE 2020 ECCE Europe in Lyon, France
At the closing session, Abdelkrim Benchaib, General Chairman of EPE’20, received the EPE flag, on stage, from Mario Marchesoni, General Chairman of EPE’19, in the presence of Leo Lorenz, President of the EPE association. During this conference, Abdelkrim Benchaib was also elected as a member of the executive committee of EPE ECCE Europe for 4 more years.
Comparaison and assessment of implementation techniques for dynamics MMC type models
Modeling Modular Multilevel Converters requires a special attention due to the strong associations between the accuracy and the complexity of models on one hand and the accuracy and simulation speed on the other hand. This paper investigates different implementation techniques for MMC models and gives an overview about their development and rapidity.
Characteristics of creeping discharges along epoxy surface in fluoronitrile/co2 gas mixture under lightning impulse
This paper deals with creeping discharges propagating over solid insulator samples in presence of a fluoronitrile mixture consisting of 10% of fluoronitrile and 90% of CO2, under positive and negative standard lightning impulse voltages, in point-plane geometry. The solid samples used are disks made of filled epoxy resin used for real GIS insulators. The experimental results are compared with those obtained with SF6 at pressure ranging 0.1 to 0.3 MPa, while the pressure of fluoronitrile mixture is chosen to match an equivalent dielectric strength of SF6. Different characteristic parameters are investigated namely the maximum length of creeping discharges versus the gas/mixture pressure and voltage polarity. In SF6, two regimes of discharges that depend on the voltage polarity are evidenced. Under positive impulse, the mixture presents similar properties as SF6. However, under negative polarity the maximum discharge length in SF6 is much longer than in the fluoronitrile mixture.
SuperGrid Institute PhD student awarded Fulbright scholarship to work at Virginia Tech
SuperGrid Institute is going global! Next week, Arthur Boutry will be crossing the Atlantic to collaborate with the Center for Power Electronics Systems (CPES), a laboratory at Virginia Tech (listed by The Times as one of the top 300 universities in the world in 2019!). During his time in the USA, Arthur will continue his work on designing MMC sub-modules for HVDC applications as part of his PhD which he began in 2018 at SuperGrid Institute, in collaboration with the Laboratoire Ampère. Arthur received a grant from the American government for his exchange year in the form of a Fulbright scholarship, one of the most prestigious and competitive fellowship programs in the world. An impressive accomplishment!
