Abstract
Superimposed voltage waveforms may result in electrical stresses in dielectric materials not anticipated for. Non-intrusive ethodologies to observe these events, both capacitively and inductively, are discussed. This paper presents two examples where complex waveforms arise from energizing and de-energizing inductive loads. Case I: A compensation coil connected through overhead lines showed high overvoltage levels when being energized by means of a SF6 switchgear. Case II: A compensation coil connected via a power cable with a vacuum switchgear experienced high overvoltage levels from recurrent restrikes during its de-energization.
Original language | English |
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Title of host publication | Proceedings of the 27th Nordic Insulation Symposium Trondheim June 13-15, 2022 |
Place of Publication | Trondheim |
Publisher | NTNU Trondheim |
Number of pages | 6 |
DOIs | |
Publication status | Published - 5 Jul 2022 |
Event | 27th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 22 - Trondheim, Norway Duration: 13 Jun 2022 → 15 Jun 2022 Conference number: 27 https://www.ntnu.edu/nordis21 |
Conference
Conference | 27th Nordic Insulation Symposium on Materials, Components and Diagnostics, NORD-IS 22 |
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Abbreviated title | NORD-IS 22 |
Country/Territory | Norway |
City | Trondheim |
Period | 13/06/22 → 15/06/22 |
Internet address |