A new approach to the design of surface subsystems of polymeric insulators for HV and MV apparatus under AC voltage

Montanari, Gian Carlo; Nath, Debasish; Cambareri, Pasquale

doi:10.1049/hve2.12334

A new approach to the design of surface subsystems of polymeric insulators for HV and MV apparatus under AC voltage

Journal Article · Sat Jun 03 00:00:00 EDT 2023 · High Voltage

DOI:https://doi.org/10.1049/hve2.12334· OSTI ID:2424245

Montanari, Gian Carlo ^[1]; Nath, Debasish ^[1]; ^[2]

Florida State University, Tallahassee, FL (United States)
Florida State University, Tallahassee, FL (United States); Informazione e Bioingegneria, Politecnico di Milano (Italy)

The design of high voltage and medium voltage AC and DC standoff insulators, and, in general, of insulation systems where surface and interface properties are predominant factors, is based on specifications and standards that rely upon long-term experiences and lab testing. Surface insulating properties depend on electrical and thermal stresses, besides environmental factors, and the inception of extrinsic ageing phenomena, such as partial discharges, can be already a cause of reduced reliability and premature failure (for organic insulating materials). An innovative approach, based on field simulation, discharge modelling, and partial discharge inception measurements is presented by the authors, which can establish a solid basis to optimise insulation design for any type of supply voltage waveform. This method, the three-leg approach, is applied here to a cable system under AC sinusoidal voltage, but it can work for any type of insulation system, such as bushings, switch gears, transformers, rotating machines, and power electronics boards.

View Accepted Manuscript (DOE)

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 2424245

Journal Information:: High Voltage, Journal Name: High Voltage Journal Issue: 4 Vol. 8; ISSN 2397-7264

Publisher:: Institution of Engineering and TechnologyCopyright Statement

Country of Publication:: United States

Language:: English

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