About: http://webisa.webdatacommons.org/456060119

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	However, in real power systems several types of disturbances may affect the grid and give rise to the appearance of a negative sequence system in addition to the positive sequence one.
http://www.w3.org/ns/prov#wasQuotedFrom	mdpi.com