3D Simulation of Partial Discharge in High Voltage Power Networks

Date

2019-10-01

Advisors

Journal Title

Journal ISSN

ISSN

DOI

Volume Title

Publisher

IWCS Inc

Type

Conference

Peer reviewed

Yes

Abstract

Partial discharge (PD) events arise inside power cables due to defects of cable’s insulation material, characterized by a lower electrical breakdown strength than the surrounding dielectric material. These electrical discharges cause signals to propagate along the cable, manifesting as noise phenomena. More significantly, they contribute to insulation degradation and can produce a disruptive effect with a consequent interruption of power network operation. PD events are, therefore, one of the best ‘early warning’ indicators of insulation degradation and, for this reason, the modeling and studying of such phenomena, together with the development of on-line PDs location methods, are important topics for network integrity assessment, and to define methods to improve the power networks’ Electricity Security. This paper presents a 3D model of PD events inside a void in epoxy-resin insulation cables for High Voltage (HV) power networks. The 3D model has been developed using the High Frequency (HF) Solver of CST Studio Suite® software. PD events of a few µs duration have been modelled and analyzed. The PD behavior has been investigated using varying electrical stress. A first study of the PD signal propagation in a power network is described.

Description

Open access

Keywords

computational electromagnetics, numerical modelling, partial discharge, power cables, power transmission lines

Citation

Ragusa, A., Sasse, H., Duffy, A. (2019) 3D Simulation of Partial Discharge in High Voltage Power Networks. Proceedings of International Cable & Connectivity Symposium (IWCS 2019), Charlotte, North Carolina, USA, Sept. 29 - Oct. 2 2019.

Rights

Research Institute

Institute of Engineering Sciences (IES)