Patent ID: 11921147
Assignee: SAGEMCOM ENERGY & TELECOM SAS
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 6:
7. The monitoring method according to claim 6, wherein the measured line-to-line voltage U′i is considered to be abnormal if:

U′i<Uprevi−α or if U′i>Uprevi+α,

where:
α is a margin of uncertainty,
and where:

Uprevi=Vn·SQRT(ai2+aj2+ai·aj),

where ai=Vi/Vn, aj=Vj/Vn, Vi is the measured line-to-neutral voltage for the phase Pi, Vj is the measured line-to-neutral voltage for the phase Pj, and Vn is a nominal line-to-neutral voltage.