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HVDC protection criteria for transient stability of AC systems with embedded HVDC links

Communications2024-10-09T10:47:04+02:00October 15th, 2018|Architecture & systèmes du supergrid, Publications|

The objective of this study is to propose a methodology for the transient stability assessment of a simple but representative AC grid in case of DC fault. After validation of the methodology, some HVDC link protection criteria are defined in terms of the Critical Time to Return to Operation. These criteria will be helpful for the design of HVDC protection systems or for the sizing of future HVDC links in order to respect the constraints of the existing protection strategies.

SuperGrid Institute committed to the Fête de la Science 2018

Communications2021-08-11T16:30:41+02:00October 12th, 2018|Evenement|

An exciting week at SuperGrid Institute with the Fête de la Science 2018! After the open house visits on Saturday the 6th of October, we welcomed students from three high school classes over the following week.

Electrical properties of epoxy systems based on ionic liquids

Communications2021-08-11T16:57:47+02:00October 12th, 2018|Appareillage électrique haute tension, Publications|

In accordance with their interesting properties, ionic liquids (ILs) have attracted in the recent years a great interest in the material field. Recently, few authors have demonstrated the reactivity of ionic liquids towards epoxy in order to form new epoxy-based networks...

Design considerations for the 2- phase cooling system of a 5 MW MVDC converter

Communications2021-08-11T16:57:57+02:00October 11th, 2018|Electronique de puissance & convertisseurs, Publications|

This presentation will provide an update on our current project: designing a cooler for a high power (5 MW) MVDC converter for offshore wind turbines applications. A number of constraints are imposed, mainly related to a limited volume, environmental, safety and health regulations, and of course cooling performance. Indeed, as we presented last year (ATW 2017), the silicon carbide power semiconductors used in this converter should operate at a junction temperature lower than 100 °C for better efficiency.

CIGRE Young Members organizing a visit at SuperGrid Institute

Communications2021-08-11T16:30:53+02:00October 8th, 2018|Evenement|

Once a year, CIGRE young members France, organizes industrial, onsite visits where academics, engineers and experts can share and discuss with scholars. This year, SuperGrid Institute has accepted to host this meeting on our premises on the 18th of October 2018.

Measurement and Analysis of SiC-MOSFET threshold voltage shift

Communications2021-08-11T17:37:46+02:00October 4th, 2018|Conference, Electronique de puissance & convertisseurs|

Gate-oxide technology weakness is a main reliability issue of Silicon Carbide MOSFET transistors. The threshold voltage shift is a critical phenomenon that addresses the reliability of industrial power applications. It is important to have a better understanding of the phenomena implied in the gate threshold voltage shift. In this context, HTGB test is proposed and the resulting gate oxide stress is studied and discussed in this paper.

SuperGrid Institute investigates the performance of different environmentally friendly insulating gases

Communications2021-08-11T17:23:40+02:00September 27th, 2018|Comuniqué de presse, Tout|

As part of PROMOTioN, Super Grid Institute (France) investigates the performance of different environmentally friendly insulating gases

AC Grid Forming by Coordinated Control of Offshore Wind Farm connected to Diode Rectifier based HVDC Link-Review and Assessment of Solutions

Communications2024-10-09T10:38:31+02:00September 26th, 2018|Tout|

This paper reviews a few of the major control solutions for AC grid forming and operation of DR-HVDC based OWFs. Then these solutions are compared based on their approach in solving the major challenges involved.

AC Grid Forming by Coordinated Control of Offshore Wind Farm connected to Diode Rectifier based HVDC Link-Review and Assessment of Solutions

Communications2021-08-11T16:58:06+02:00September 26th, 2018|Architecture & systèmes du supergrid, Publications|

This paper reviews a few of the major control solutions for AC grid forming and operation of DR-HVDC based OWFs. Then these solutions are compared based on their approach in solving the major challenges involved.

PhD Etienne OUSS “Characterization of Partial Discharges and Defect Identification in High-Voltage Direct Current GIS”

Communications2021-08-11T17:42:53+02:00September 25th, 2018|Appareillage électrique haute tension, Phd, Tout|

This thesis aimed to characterize partial discharges in DC gas-insulated substations, and to develop an automatic defect identification tool. The first step of this work was the development of a partial discharge measuring bench. The complete study has been performed in a GIS section, so that the results can be directly applied to industrial equipment.

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