Partial discharge measurements of DC insulation systems: the influence of the energization transient

Seri, Paolo and Ghosh, Riddhi and Cirioni, Leonardo and Montanari, Gian Carlo (2019) Partial discharge measurements of DC insulation systems: the influence of the energization transient. [Preprint]
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This paper introduces techniques for partial discharge, PD, recognition under DC, both in steady state and in transient condition, during which the field in insulation varies slowly from a permittivity-driven to a conductivity-driven profile. This transient can be significantly long, depending on insulating material characteristics, and condition PD phenomenology and impact of PD on insulation life. Focusing mainly on the behavior of PD repetition rate as a function of time, after insulation energization by a DC voltage step, PD triggered by transient field can be separated from those relevant to steady state, which may indicate a criterion to estimate the partial discharge inception voltage, PDIV, under DC supply.

Document type
Seri, PaoloUniversity of Bologna
Ghosh, RiddhiUniversity of Bologna
Cirioni, LeonardoUniversity of Bologna
Montanari, Gian CarloCenter for Advanced Power Systems, Florida State University, Tallahasse, USA
Deposit date
30 Jan 2020 08:20
Last modified
30 Jan 2020 08:20
Project name
GRIDABLE - Plastic nanocomposite insulation material enabling reliable integration of renewables and DC storage technologies in the AC energy grid
Funding program
EC - H2020

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