FAULT POINT LOCATING DEVICE AND METHOD, ELECTRIC POWER SYSTEM MONITORING SYSTEM, AND FACILITY PLANNING SUPPORT SYSTEM
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United States of America Patent
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Feb 1, 2016
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Feb 27, 2015
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A fault point locating device which estimates a fault point in an electric power system, is provided with: a variation range calculating means which obtains a range of variation of sensor values and a range of variation of an impedance of the electric power system, on the basis of the sensor values, which include measured voltage values and measured current values before and after the fault and which are measured using sensors installed in the electric power system, sensor errors representing error ranges of the sensors in relation to the sensor value measurements, said impedance, and an impedance variation parameter for determining the range of variation of the impedance; a combination creating means which creates combinations of values that the sensor values and the impedance value could attain; and a fault point locating means which calculates a fault point range representing distances from the sensors to the fault point.
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