Raphaël Guffond

Title: Raphaël Guffond: Inventor in High-Voltage Cable Measurement

Introduction

Raphaël Guffond is an inventor based in Lyon, France, and works at Nexans. His patent work concerns measuring electrical space charge in high-voltage direct-current (HVDC) cable insulation. He is named on 1 patent.

Latest Patents

Guffond’s patent, “Device and method for measuring space charge in an electric cable specimen,” describes a system for detecting charge density and locating charges within a cable’s insulation. The device places a cable specimen between two electrodes, one connected to a DC voltage source and a voltage-step generator, and the other grounded. A piezoelectric sensor connected to the grounded electrode detects the resulting signal, which is amplified for measurement.

The signal’s amplitude relates to the charge density in the specimen, while its delay indicates how far the charges are from the sensor and therefore helps determine their position. The specimen includes a cut made to a predetermined depth in the cable’s electrical insulation system.

Career Highlights

The available information identifies Guffond’s work at Nexans and his contribution to a patented measurement approach for HVDC cable insulation. The invention addresses the detection and localization of space charge, a relevant measurement challenge in high-voltage cable systems.

Collaborations

Guffond’s listed coworkers include Baptiste Meneguzzo and Pierre Mirebeau. They are associated with the patent information provided.

Conclusion

Raphaël Guffond’s patent reflects his contribution to cable technology through a method for measuring and locating space charge in HVDC cable insulation.