Discussion on the Defects in HVDC Cables and Their Relation with the Occurrence of Partial Discharge Phenomena

A. Caprara, P. Pieroni, G. Mazzanti, G. Ciotti, Ilkka Rytöluoto, J. Harjuhahto, B. Diban

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Abstract

Extruded cables for high voltage (HV) applications, particularly for HVDC systems, must be manufactured to a high standard to ensure their quality and design life. Any deficiencies or imperfections during the manufacturing processes can lead to defects that negatively impact the performance of the final product during operation. There are methods available to detect weaknesses both through end-of-line tests and continuous monitoring of the assets. One innovative diagnostic technique gaining recognition in the HVDC cable industry is Partial Discharge Analysis (PDA). This technique can identify prospective defects early on, preventing accelerated degradation of the insulation material, and potentially leading the cable system to failure. This paper discusses some of the various types of defects that can arise in cables due to poor manufacturing practices, as well as during their operational lifespan, and the corresponding types of PD phenomena that may occur. Examples of imperfections will be presented, debating their probability of occurrence based on the manufacturing processes and materials, and their associated PD signals when exposed to DC electrical fields. Most of the samples used in the investigation originate and have been collected in the ongoing activities within the NEWGEN project, which is fully funded by the European Union Grant Agreement No.101075592.

Original languageEnglish
Title of host publication2024 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2024
PublisherIEEE Institute of Electrical and Electronic Engineers
ISBN (Electronic)9798350366679
DOIs
Publication statusPublished - 2024
MoE publication typeA4 Article in a conference publication
Event2024 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2024 - Auburn, United States
Duration: 6 Oct 20249 Oct 2024

Conference

Conference2024 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2024
Country/TerritoryUnited States
CityAuburn
Period6/10/249/10/24

Funding

Funded by the European Union Grant Agreement No 101075592. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or CINEA. Neither the European Union nor the granting authority can be held responsible for them.

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