发明名称 |
Time division multiplex system for a segregated phase comparison relay system |
摘要 |
This disclosure relates to a protective relaying system for a polyphase power transmission line in which at least two separate line operating conditions at a remote end of a protected line section are transmitted to a local end of the line section over a single communication channel. In the preferred illustrated embodiment, the operating conditions of three-line conductors are sequentially transmitted whenever a fault condition is sensed on any one or more of the three-line conductors. During the normal, non-faulted operation, a coded signal is continually transmitted to maintain the time derived signals at the receiver in substantial synchronism with the time derived signals of the transmitter. The coded signal also establishes a trip inhibiting or guard signal at the receiver.
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申请公布号 |
US4020396(A) |
申请公布日期 |
1977.04.26 |
申请号 |
US19760665650 |
申请日期 |
1976.03.10 |
申请人 |
WESTINGHOUSE ELECTRIC CORPORATION |
发明人 |
GAMBALE, JOHN C.;RAY, ROGER E. |
分类号 |
H02H3/30;H02H7/26;(IPC1-7):H02H7/26 |
主分类号 |
H02H3/30 |
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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