Nos actualités
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!
SuperGrid Institute hosts the 11th Quarterly review of NanocompEIM 2
Since October 2016, SuperGrid Institute has been involved in the NanocompEIM 2 project. The goal of the project is to develop nanocomposites (Nanocomp) for electrical insulation materials (EIM) in order to reduce CO2 emissions and improve system reliability and availability. Financed at 50% by Innovate UK, a government organisation dedicated to research and innovation in the United Kingdom, the overall budget of the project is around 1M£ (1.1M€).
SuperGrid Institute collaborates with Edouard Branly School’s undergraduate students for their end of year project!
Last year, SuperGrid Institute signed a framework agreement with the Digital Department of Edouard Branly School with the aim of developing educational modules in the field of electrical engineering. This year for their final project the undergraduate students from the Digital Department worked on an interactive learning application based on High Voltage Direct Current cable systems and junctions. The final project counts for a significant proportion of the students’ overall credits for the year.
Michel MERMET-GUYENNET’s keynote speech at the 13th IEEE International Conference on Power Electronics and Drive Systems (PEDS 2019)
This Tuesday the 10th of July, Michel MERMET-GUYENNET presented a keynote speech at the 13th IEEE International Conference on Power Electronics and Drive Systems (PEDS 2019) in Toulouse, following the invitation of Bernado COGO from the Antoine de Saint Exupéry Institute of Technology (IRT Saint Exupéry). In his paper, Michel MERMET-GUYENNET presented power electronics technologies for MV and HV grids.
SuperGrid Institute’s participation at AGP21
The Association Grand Projects 21 – Major Programmes and Projects for the 21st Century (AGP21) met this Thursday in Versailles to discuss the development of interconnected electricity networks on a global scale. SuperGrid Institute was invited to present its vision and discuss the appeal of multi-terminal HVDC technologies in the design and construction of future energy highways. The subsea node concept developed at SuperGrid Institute was also introduced as an essential building block for extending offshore networks and integrating renewable energies on a wide-scale.
Phd Priscillia DANIEL “Electrical properties study of cross-linked polyethylene insulated cables in presence of gaseous cavities aged under DC or DC with harmonic voltages”
This study aims to examine possible impact of these harmonics in presence of microcavities. Depending on their size and on the electrical field, partial discharges (PD) can occur in these microcavities. Two types of cables have been aged: a medium voltage AC (MVAC) cable with millimetric cavities induced artificially and a model cable with an HVDC XLPE grade.
SuperGrid Institute’s has a significant presence at Jicable19
This year, for the first time our presence at PCIM Europe 2019, was noticeable with our stand from 6th to 9th May. At the conference, and as power electronics is at the heart of our innovations, SuperGrid Institute was invited to present during the « Smart Transformers » special session.
SuperGrid Institute’s has a significant presence at Jicable19
This year, for the first time our presence at PCIM Europe 2019, was noticeable with our stand from 6th to 9th May. At the conference, and as power electronics is at the heart of our innovations, SuperGrid Institute was invited to present during the « Smart Transformers » special session.
LISORE consortium plenary meeting at SuperGrid Institute
SuperGrid Institute was pleased to host the LISORE consortium plenary meeting this Wednesday. This 15-month project that began in January 2019 aims to explore the feasibility and develop a technological roadmap from which innovative low-cost substations can be developed, thereby enabling the integration of marine energies by 2025. By participating and organising this day, SuperGrid Institute has increased its visibility and positioned itself as an expert partner in the domain of innovative electrical systems. The visit of our test platforms enabled us to demonstrate to the project participants how we are supporting the development of the sector through our expertise and state of the art facilities.
