METHOD AND DEVICE FOR STARTING FAULT POINT LOCATION

PROBLEM TO BE SOLVED: To provide a method and device for starting fault point location that can start locating by detecting only the fault of a target transmission line of fault point location. SOLUTION: When a grounding accident occurs at the phase (a) of a transmission line 10, a signal '1�...

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Bibliographische Detailangaben
Hauptverfasser:	KOMATSU SHINJI, WACHI ISAO, SEYA MINORU, NORO JUN, TAKIGUCHI YUTAKA
Format:	Patent
Sprache:	eng
Schlagworte:	CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method and device for starting fault point location that can start locating by detecting only the fault of a target transmission line of fault point location. SOLUTION: When a grounding accident occurs at the phase (a) of a transmission line 10, a signal '1' is outputted from a control circuit 22 if a phase current exceeds a set value and the signal is outputted to an AND gate 70 via an OR gate 42. Further, when the impedance of the phase (a) enters the range of a set value, a signal '1' is outputted from a grounding relay 44 and the signal is outputted to the AND gate 70 via OR gates 58 and 68, thus outputting a signal '1' from the AND gate 70 and starting locating.