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METHOD AND SYSTEM FOR STANDARDIZING INTERMITTENT ARC GROUND FAULT SECTION IN HIGH VOLTAGE POWER DISTRIBUTION SYSTEM WITH NON-GROUNDED NEUTRAL POINT
METHOD AND SYSTEM FOR STANDARDIZING INTERMITTENT ARC GROUND FAULT SECTION IN HIGH VOLTAGE POWER DISTRIBUTION SYSTEM WITH NON-GROUNDED NEUTRAL POINT
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机译：具有非接地中点的高压配电系统中间歇弧接地故障段的标准化方法和系统
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摘要
PURPOSE: To easily and quickly specify a section where an intermittent arc ground fault is brought about. CONSTITUTION: Many measuring points (S01-S24) are set via a distance in a high voltage distribution system in which neutral points are not grounded. A current detector 7 is set at each measuring point to detect a high frequency ground fault current. Detection signals by the current detectors 7 are transmitted to a standardization device 9 via an optical cable 8. The standardization device 9 judges a frequency of the high frequency ground fault current flowing at each measuring point based on tone detection signal from the measuring point, detects a difference of frequencies of high frequency ground fault currents of adjacent two measuring points, and executes standardization from the difference every two adjacent measuring points as to whether an intermittent arc ground fault current flows between the two measuring points.
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