发明名称 |
DETECTION DIRECTIONNELLE DE DEFAUT TERRE SENSIBLE MOYENNE TENSION PAR CORRELATION LINEAIRE |
摘要 |
The device (10) has a storage unit (20) to store values of signals representative of homopolar current (I0) and phases (DELTAI0) during a storage period prior to a detection signal (D) of occurrence of earth fault. A signal processing unit (30) has a determination unit to determine a variation of the signal representative of the current and of each of the phases relative to the values. A calculation unit (34) calculates standardized correlation coefficients (rA-rC) between the variations of the signal representative of the current and of signals representative of phase currents (IA-IC). Independent claims are also included for the following: (1) an earth fault passage indicator (2) a protection relay for earth (3) a method for directional detection of an earth fault in a multiphase network (4) a method for protecting a current line during occurrence of an earth fault. |
申请公布号 |
FR2993670(B1) |
申请公布日期 |
2014.07.11 |
申请号 |
FR20120057023 |
申请日期 |
2012.07.20 |
申请人 |
SCHNEIDER ELECTRIC INDUSTRIES SAS |
发明人 |
VERNEAU GUILLAUME;BAUMES NATHALIE;NEVEU THIBAULT |
分类号 |
G01R31/08 |
主分类号 |
G01R31/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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