SEVERE ACCIDENT DETECTOR

PROBLEM TO BE SOLVED: To detect severe accident occurring at a remote end correctly at the local end of a generator. SOLUTION: The severe accident detector comprises a first judgment means for taking out variation rate of at least one of the terminal voltage Ea and the power factor angle θ of the ge...

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1. Verfasser:	KITAUCHI YOSHIHIRO
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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creator	KITAUCHI YOSHIHIRO
description	PROBLEM TO BE SOLVED: To detect severe accident occurring at a remote end correctly at the local end of a generator. SOLUTION: The severe accident detector comprises a first judgment means for taking out variation rate of at least one of the terminal voltage Ea and the power factor angle θ of the generator G at the local end of a generator G, and judging whether the variation rate exceeded first set values E1, θ1 corresponding to occurrence of severe accident or not; and a second judgment means for further taking out variation rate of at least one of the terminal voltage Ea and the power factor angle θ of the generator G when the variation rate exceeded the first set values E1, θ1, and judging whether the variation rate exceeded second set values corresponding to removal of severe accident or not. COPYRIGHT: (C)2007,JPO&INPIT
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SOLUTION: The severe accident detector comprises a first judgment means for taking out variation rate of at least one of the terminal voltage Ea and the power factor angle θ of the generator G at the local end of a generator G, and judging whether the variation rate exceeded first set values E1, θ1 corresponding to occurrence of severe accident or not; and a second judgment means for further taking out variation rate of at least one of the terminal voltage Ea and the power factor angle θ of the generator G when the variation rate exceeded the first set values E1, θ1, and judging whether the variation rate exceeded second set values corresponding to removal of severe accident or not. 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SOLUTION: The severe accident detector comprises a first judgment means for taking out variation rate of at least one of the terminal voltage Ea and the power factor angle θ of the generator G at the local end of a generator G, and judging whether the variation rate exceeded first set values E1, θ1 corresponding to occurrence of severe accident or not; and a second judgment means for further taking out variation rate of at least one of the terminal voltage Ea and the power factor angle θ of the generator G when the variation rate exceeded the first set values E1, θ1, and judging whether the variation rate exceeded second set values corresponding to removal of severe accident or not. 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SOLUTION: The severe accident detector comprises a first judgment means for taking out variation rate of at least one of the terminal voltage Ea and the power factor angle θ of the generator G at the local end of a generator G, and judging whether the variation rate exceeded first set values E1, θ1 corresponding to occurrence of severe accident or not; and a second judgment means for further taking out variation rate of at least one of the terminal voltage Ea and the power factor angle θ of the generator G when the variation rate exceeded the first set values E1, θ1, and judging whether the variation rate exceeded second set values corresponding to removal of severe accident or not. COPYRIGHT: (C)2007,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record>
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subjects	CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
title	SEVERE ACCIDENT DETECTOR
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