公开(公告)号：US20230417814A1

公开(公告)日：2023-12-28

申请号：US18342521

申请日：2023-06-27

Applicant: SAGEMCOM ENERGY & TELECOM SAS

Inventor： Pierre LHUILLIER ,  Sébastien SAINT-LEGER

IPC: G01R31/08 ,  H02H5/10 ,  G01R11/25 ,  G01R31/58

CPC classification number: G01R31/086 ,  H02H5/105 ,  G01R11/25 ,  G01R31/58 ,  G01R31/088

Abstract: A method for monitoring a polyphase network includes the steps, repeated regularly, of: acquiring voltage measurements taken by voltage sensors of an item of electrical equipment, and producing current values of electrical parameters; accessing a reference table comprising a list of connection configurations each associated with a distinct combination of reference values of said electrical parameters, the list of connection configurations comprising configurations each corresponding to a combination of connection states for each phase (P1, P2, P3) and for the neutral (N); implementing an exploratory algorithm intended to explore the reference table to identify the current connection configuration.

公开(公告)号：US20230417808A1

公开(公告)日：2023-12-28

申请号：US18343669

申请日：2023-06-28

Applicant: SAGEMCOM ENERGY & TELECOM SAS

Inventor： Pierre LHUILLIER ,  Sébastien SAINT-LEGER

IPC: G01R22/06 ,  G01R31/54 ,  G01R31/56 ,  G01R31/30 ,  G08B21/18

CPC classification number: G01R22/068 ,  G01R31/54 ,  G01R31/56 ,  G01R31/3004 ,  G08B21/185

Abstract: A method for detecting a break in connection of a neutral of a three-phase electricity network, implemented in a processing unit of an item of electrical equipment connected to the electricity network includes acquiring, at a time T, a first phase voltage (V1), a second phase voltage (V2) and a third phase voltage (V3) measured by voltage sensors of the item of electrical equipment; evaluating a first quantity representative of a ratio between a maximum voltage and a minimum voltage from the first, second and third phase voltages; if the first quantity is greater than a predetermined threshold: evaluating, based on the first, second and third phase voltages, a second quantity; detecting a break in the neutral at the time T when the second quantity satisfies a predetermined reference criterion.