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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”

Communications2021-08-11T17:42:28+02:00July 5th, 2019|Appareillage électrique haute tension, Phd, Systèmes de câbles haute tension|

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

Communications2023-01-31T13:31:29+01:00June 28th, 2019|Tout|

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

Communications2021-08-11T16:28:45+02:00June 28th, 2019|Evenement, Systèmes de câbles haute tension|

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

Communications2021-08-11T16:29:00+02:00June 26th, 2019|Evenement, Tout|

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.

Raphaël CHASSAGNOUX received the best student presentation prize at IEEE ICDL 2019

Communications2021-08-11T16:29:13+02:00June 26th, 2019|Evenement|

Raphaël CHASSAGNOUX received the best student presentation prize for his « Prebreakdown and Breakdown in Liquid Nitrogen under Pulsed Heating for Superconducting Applications » at IEEE ICDL 2019.

Electro-thermal simulation methodology for HVDC cable GIS termination

Communications2021-08-11T16:53:04+02:00June 26th, 2019|Appareillage électrique haute tension, Publications, Systèmes de câbles haute tension|

This paper presents a simulation methodology that can be used to evaluate the electric stresses in GIS/cable termination under different operating conditions including polarity reversal and superimposed impulses.

Follow up of space charge distributions in HVDC cable during a Pre-Qualification test using the Pulse ElectroAcoustic technique and the Thermal Step Method

Communications2021-08-11T16:53:12+02:00June 26th, 2019|Publications, Systèmes de câbles haute tension|

In order to better understand the evolution of space charge and electric field distortions during the application of electro-thermal stresses to a HVDC cable system, the present paper shows the follow up of periodic space charge characterizations on a HVDC cable during part of a Pre-Qualification test using both the Pulse ElectroAcoustic technique and the Thermal Step Method. The focus is on the evolution of space charges distributions during load cycles and high load sequences according to the Cigré TB496 recommendation.

Development and Set-up of a Non-intrusive Technique for measuring Space Charges in Specimens of dc cables

Communications2021-08-11T16:53:20+02:00June 25th, 2019|Appareillage électrique haute tension, Publications, Systèmes de câbles haute tension|

This paper presents a procedure for designing a power converter to produce power pulses in the conductive parts of a cable (core or shield) for non-invasive space charge measurements with a thermal wave.

Pole-to-ground fault protection strategy for HVDC grids under symmetrical monopolar configuration

Communications2021-08-11T16:53:30+02:00June 25th, 2019|Architecture & systèmes du supergrid, Publications|

An experimental study of breakdown and pre-breakdown phenomena in liquid nitrogen (LN2) is performed in this paper, in order to provide useful knowledge for the design of high voltage superconducting systems.

Prebreakdown and Breakdown in Liquid Nitrogen under Pulsed Heating for Superconducting Applications

Communications2021-08-11T16:53:44+02:00June 25th, 2019|Appareillage électrique haute tension, Publications, Systèmes de câbles haute tension|

An experimental study of breakdown and pre-breakdown phenomena in liquid nitrogen (LN2) is performed in this paper, in order to provide useful knowledge for the design of high voltage superconducting systems.

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