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Small Signal Internal Voltage Transfer Measurements and White-Box Transient Calculations for Non-standard Test Conditions of a Shell-Form Power Transformer

Small Signal Internal Voltage Transfer Measurements and White-Box Transient Calculations for Non-standard Test Conditions of a Shell-Form Power Transformer

Category
Academic chapter/article/Conference paper
Abstract
Research tests were performed on a shell-form autotransformer with a more rigorous impulse test methodology than the traditional recurrent surge oscillograph method. These tests included non-standard terminal connections with open terminals, differing from those tests defined by the international standards related with impulse testing of power transformers. The test voltage responses were obtained using voltage transfer frequency sweep measurements that were converted into time domain waveforms. The measurement results were compared against simulations by a white-box model, demonstrating satisfactory accuracy of the transient calculation tool. In addition, the sensitivity of the measurements to measuring probes length was experimentally evaluated. Reducing the lengths with 1.5 m only affected frequency components around 1 MHz.
Client
  • Research Council of Norway (RCN) / 269303
  • Research Council of Norway (RCN) / 207160
Language
English
Author(s)
  • Bjørn Gustavsen
  • Ariana Martins
  • Carlos A. Sa
  • Luis Braña
  • Ricardo Castro Lopes
  • Pedro Lima
  • Andrea Soto
  • Mario Soares
Affiliation
  • SINTEF Energy Research / Energisystemer
  • University of Porto
  • Portugal
Year
Publisher
Springer Nature
Book
5th International Colloquium on Transformer Research and Asset Management
Issue
671
ISBN
978-981-15-5600-5
Page(s)
183 - 196