Analysis and Explanation of Resonant Phenomena Involving EHV Transformers during Power System Restoration Tests †

This paper deals with the simulation and the experimental confirmation of electromagnetic events that could interfere with the successful formation of the restoration path during the power system restoration procedure. The studied phenomena are more relevant for bulk power systems characterized by a...

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Bibliographic Details
Main Authors: Benato, R. (Author), Dambone Sessa, S. (Author), Giannuzzi, G.M (Author), Pisani, C. (Author), Poli, M. (Author), Sanniti, F. (Author)
Format: Article
Language:English
Published: MDPI 2023
Subjects:
Online Access:View Fulltext in Publisher
LEADER 02927nam a2200409Ia 4500
001 10.3390-en16093754
008 230526s2023 CNT 000 0 und d
020 |a 19961073 (ISSN) 
245 1 0 |a Analysis and Explanation of Resonant Phenomena Involving EHV Transformers during Power System Restoration Tests † 
260 0 |b MDPI  |c 2023 
856 |z View Fulltext in Publisher  |u https://doi.org/10.3390/en16093754 
520 3 |a This paper deals with the simulation and the experimental confirmation of electromagnetic events that could interfere with the successful formation of the restoration path during the power system restoration procedure. The studied phenomena are more relevant for bulk power systems characterized by a low short circuit power as the restoration backbone. In particular, two case studies have been simulated and analyzed: one related to a transformer energization during the formation of the restoration path, and the other one occurred after the de-energization of some transmission lines and one autotransformer belonging to the restoration path. From the simulation results, it emerged that such events are related to the resonant effects between the supplying transformer and the restored network. Such resonances could have negative effects on the restoration if they are not effectively managed. In order to evaluate the impact of such phenomena in real networks, the measurement recordings of on-field tests were compared with the simulation results. It is worth noting that the performed analyses require the knowledge of several parameters that were not always available in practice. Hence, the exact magnitude of the described resonant phenomena was not easy to foresee for the restoration of real networks. The performed comparison confirms the preliminary simulation results and highlights that detailed electromagnetic models are particularly important to support the power system restoration management, in particular the planning of recovery procedures. © 2023 by the authors. 
650 0 4 |a EHV power transmission 
650 0 4 |a Electric power transmission networks 
650 0 4 |a Electric transformer testing 
650 0 4 |a Electromagnetics 
650 0 4 |a Experimental confirmation 
650 0 4 |a Harmonic resonance 
650 0 4 |a harmonic resonances 
650 0 4 |a power system restoration 
650 0 4 |a Power system restoration 
650 0 4 |a Real networks 
650 0 4 |a Resonant phenomena 
650 0 4 |a Restoration 
650 0 4 |a Restoration paths 
650 0 4 |a Restoration procedure 
650 0 4 |a transformer energization 
650 0 4 |a Transformer energization 
650 0 4 |a Weak network 
650 0 4 |a weak networks 
700 1 0 |a Benato, R.  |e author 
700 1 0 |a Dambone Sessa, S.  |e author 
700 1 0 |a Giannuzzi, G.M.  |e author 
700 1 0 |a Pisani, C.  |e author 
700 1 0 |a Poli, M.  |e author 
700 1 0 |a Sanniti, F.  |e author 
773 |t Energies  |x 19961073 (ISSN)  |g 16 9