Glass Fibre Insulated Wire Assessment Under Partial Discharges Activity via Dielectric Dissipation Factor Measurements

Naderiallaf, Hadi; Giangrande, Paolo; Galea, Michael

Abstract

This experimental study evaluates the ageing rate associated with partial discharges (PD) activity for a Type-II insulated wire (i.e., Glass fibre), relying on the dielectric dissipation factor (DDF) and capacitance tip-up measurements. The employed specimens model the turn-to-turn insulation for low-voltage electrical machines. The turn-to-turn insulation was investigated because is the weakest point of the whole insulation system. The repetitive partial discharge inception voltage (RPDIV) is determined for unipolar and bipolar square waveform excitations with different rise times and frequencies. Then, the samples are stressed constantly under RPDIV at several exposure times for ageing purposes. The DDF and capacitance tip-up measurements are performed at the end of each ageing cycle. The reported findings enable the definition of indicators for the PD activity through the selected diagnostic markers (i.e., DDF and insulation capacitance). In addition, the proposed approach can provide reliable information on the Glass fibre ageing level associated with PD activity, comparing the harmfulness of different steep-fronted square waveforms.

Citation

Naderiallaf, H., Giangrande, P., & Galea, M. (2022). Glass Fibre Insulated Wire Assessment Under Partial Discharges Activity via Dielectric Dissipation Factor Measurements. In 2022 9th International Conference on Condition Monitoring and Diagnosis (CMD 2022) (98-102). https://doi.org/10.23919/CMD54214.2022.9991482

• Presentation Conference Type: Edited Proceedings
• Conference Name: 2022 9th International Conference on Condition Monitoring and Diagnosis (CMD)
• Start Date: Nov 13, 2022
• End Date: Nov 18, 2022
• Acceptance Date: Nov 13, 2022
• Online Publication Date: Jan 2, 2023
• Publication Date: Nov 13, 2022
• Deposit Date: Apr 3, 2023
• Publicly Available Date: Apr 17, 2023
• Publisher: Institute of Electrical and Electronics Engineers
• Volume: 1 vol
• Pages: 98-102
• Book Title: 2022 9th International Conference on Condition Monitoring and Diagnosis (CMD 2022)
• ISBN: 9781665470155
• DOI: https://doi.org/10.23919/CMD54214.2022.9991482
• Public URL: https://nottingham-repository.worktribe.com/output/16217213
• Publisher URL: https://ieeexplore.ieee.org/document/9991482
• Additional Information: H. Naderiallaf, P. Giangrande and M. Galea, "Glass Fibre Insulated Wire Assessment Under Partial Discharges Activity via Dielectric Dissipation Factor Measurements," 2022 9th International Conference on Condition Monitoring and Diagnosis (CMD), Kitakyushu, Japan, 2022, pp. 98-102, doi: 10.23919/CMD54214.2022.9991482.