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DIRECT CURRENT METER EMPLOYING WAVEFORM SEPARATOR FOR DETECTING LEAKAGE CURRENT
DIRECT CURRENT METER EMPLOYING WAVEFORM SEPARATOR FOR DETECTING LEAKAGE CURRENT
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机译:直接电流计应用波形分离器检测泄漏电流
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摘要
A system for determining DC leakage current flowing through an electrically insulating structure in a high voltage direct current power system is provided. The DC leakage current is a composite DC current. The insulating structure is operatively coupled to at least an overhead energized DC electrical line. The system further includes a direct current meter adapted to be electrically coupled to at least the insulating structure. The meter includes a waveform separator. The separator is configured to receive and separate the composite DC current into a corresponding direct current (DC) and an alternating current (AC) component. The separator further includes at least one comparator which is configured to produce at least one corresponding digital signal from the AC component; and a processor. The processor receives and analyzes the at least one corresponding digital signal and the DC component to determine a resultant leakage current flowing through the insulating structure.
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