Partial Discharge Measurements under DC Voltages Containing Harmonics Produced by Power Electronic Devices
Paper in proceedings, 2018

Partial Discharge (PD) monitoring is one of the main diagnostic instrument to evaluate the reliability of modern electrical transmission and distribution systems. The widespread use of High voltage dc (HVDC) connections increase the demand of voltage source converters (VSCs) which, as a consequence, has brought about new challenges in the field of partial discharge measurements. In fact, the output voltage waveforms generated by AC/DC modular multilevel converters (MMCs) are affected by a significant harmonic content which influences the Partial Discharges (PDs) activity. For this reason, previous research mainly investigated the PD phenomenon on the AC side of the converter. The aim of the present work was to evaluate the PDs behavior applying a voltage waveform containing ripple at the DC side of the converter. At first, a pure DC voltage has been used to stress the tested specimen and then harmonic content has been added by chancing the number of modules of the simulated AC/DC converter. For the different generated waveforms, measurements of PDs have been carried out and a comparison of the different PDs pattern have been made. The effect on the PDs behavior has been also evaluated for different switching frequencies.

partial discharge

voltage source converter

harmonic content

pd pattern

multilevel converter

Author

Pietro Romano

University of Palermo

Amir Parastar

Power grids and Components

A. Imburgia

University of Palermo

Jörgen Blennow

Chalmers, Electrical Engineering, Electric Power Engineering

Massimo Bongiorno

Power grids and Components

A Di Tommaso

University of Palermo

Thomas Hammarström

Power grids and Components

Yuriy Serdyuk

Power grids and Components

Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP

00849162 (ISSN)

558-561

IEEE Conference on Electrical Insulation and Dielectric Phenomena
Cancun, Mexico,

Areas of Advance

Energy

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/CEIDP.2018.8544850

ISBN

9781538661925

More information

Latest update

1/24/2019