Communications: electrical – Condition responsive indicating system – Specific condition
Reissue Patent
2008-01-29
2008-01-29
Lieu, Julie Bichngoc (Department: 2636)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S286010, C340S286020
Reissue Patent
active
RE040037
ABSTRACT:
A Power system protection and control system has protection and control terminals that perform protection and control of a power system by operation of a plurality of CBs in response to state variables input from power system; and a power system monitoring and control host mutually connected in a fashion to permit data exchange through a transmission system (communication network) with protection and control terminals and that performs monitoring and control of power system in accordance with data transmitted from protection and control terminals. Protection and control terminals each has a correlation circuit that performs correlation of an operated CB and the cause of its operation, using information sent from protective relay circuit, CB control circuit, re-closure circuit and CB state receiving circuit when at least one of a plurality of CBs is operated, and a correlation result transmission circuit that transmits the result obtained by the correlation processing of this correlation circuit to power system monitoring and control host through transmission system. The power system monitoring and control host includes a correlation result transmission unit that receives and displays the correlation result transmitted through transmission system from correlation result transmission circuit, associated message file storage unit and CB operation display unit.
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Hasegawa Osamu
Kaino Yasuo
Shirota Yoshihiro
Foley & Lardner LLP
Kabushiki Kaisha Toshiba
Lieu Julie Bichngoc
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