The main objective of this paper consists on
showing the results of the final career project made in the
Industrial Engineering University of Vigo and with the
cooperation of a Spanish electric distribution company (Unión
Fenosa), to study voltage sags and short interruptions. First, a
review about some of the methods that can be applied in an
industrial installation to get a satisfactory operation in any
electromagnetic environment with the presence of voltage sags
or short interruptions will be showed in an abridged way.
Moreover, a voltage sags and short interruptions measures
analysis was also made, using a series of samples registered by
a distribution utility in different places along the geography of
Galicia, between the years 1999 and 2002, to characterize this
events, as well as search and guess the future tendencies to
improve power quality in the distribution networks and, finally,
establish the corresponding conclusions