A master thesis from Aalborg University
Monitoring of harmonic distortions in distribution grids and their effect on temperature of substation transformers
Author(s)
Term
4. term
Education
Publication year
2016
Submitted on
2016-01-06
Pages
120 pages
Abstract
The sales companies of renewable energy sources are competing to get on Danish market. The equipment sold in Denmark must comply with the standards. However, the standards are subject for changing with growing new technologies. Therefore, in some cases the equipment installed 25-30 years back may not be covered by the new standards and the new equipment not reflect their large penetration into the grid. But the DSO task is to insure safe and stable operation of the network together with the equipment installed. It can be done by monitoring the ’health’ of equipment. The current work investigates the effect of power electronic based generation and loads on substation transformer. For this purpose a random substation were chosen to perform the measurements. The data gathered during the measurements is used in the electrical-magnetic-thermal model to assess transformer temperature. Finally, the interpretation of the results will be summarized and the guidelines and recommendations will be provided for DSO. Keywords: Condition monitoring, Distribution grid, Distribution transformer, Electrical-Magnetic- Thermal model
Documents
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