Open AccessFerroresonance phenomena in medium‐voltage isolated neutral grids: a case study
Author(s) -
Martínez Raquel,
Manana Mario,
Rodríguez Jose Ivan,
Álvarez Marcos,
Mínguez Rafael,
Arroyo Alberto,
Bayona Eduardo,
Azcondo Francisco,
Pigazo Alberto,
Cuartas Francisco
Publication year - 2019
Publication title -
iet renewable power generation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.005
H-Index - 76
eISSN - 1752-1424
pISSN - 1752-1416
DOI - 10.1049/iet-rpg.2018.5231
Subject(s) - ferroresonance in electricity networks , voltage , transformer , distribution grid , electric power system , grid , power quality , overvoltage , distribution transformer , work (physics) , computer science , electrical engineering , power (physics) , distribution (mathematics) , control theory (sociology) , electronic engineering , engineering , physics , mathematics , mechanical engineering , control (management) , mathematical analysis , artificial intelligence , geometry , quantum mechanics
Power quality events associated with the occurrence of ferroresonances in medium voltage (MV) isolated‐neutral distribution power systems are well known but they still happen in nowadays grids. This work deals with the study of ferroresonance events in a distribution grid region characterised by having distributed generators and being lightly loaded. The study shows that well‐known solutions, i.e. voltage transformer damping, are difficult to apply due to the legal considerations and, alternatively, the distribution system operator can take actions to minimise their effect on the distribution system. The data provided and the obtained results correspond to a three‐year measurement campaign at a real MV isolated‐neutral distribution power system. The measurements and analysis given allow reaching general conclusions about the distribution system operation oriented to minimise the effect of ferroresonances.