Detecting device for faulty insulator based on leakage current

The invention relates to a detecting device for a faulty insulator based on leakage current. The device comprises an insulator leakage current sensor and a signal acquiring and processing device, wherein the insulator leakage current sensor is arranged on a steel cap of the insulator and is used for...

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Bibliographische Detailangaben
Hauptverfasser: LIU LIANG, ZHANG MINGCAN, ZHANG ZHAOQING, ZHENG QUNMING, CAO KE, ZHAO HUI, GUO ZHIZHONG, LUO LINLIN, KONG JIE, WANG ZAN, SHU BANGJING, CAI DEFENG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to a detecting device for a faulty insulator based on leakage current. The device comprises an insulator leakage current sensor and a signal acquiring and processing device, wherein the insulator leakage current sensor is arranged on a steel cap of the insulator and is used for acquiring the leakage current flowing through an insulator string where the insulator is located and transmitting the leakage current to the signal acquiring and processing device by a shielded cable or a wireless mode. The signal acquiring and processing device comprises a broadband current sensor, a high-pass filter, a band-pass filter, a phase shift and square wave conversion circuit, an amplifier, a data acquisition card and a singlechip microcomputer; the singlechip microcomputer is used for processing data and judging the conditions of the insulator. According to the detecting device disclosed by the invention, faults of the insulator are judged by detecting the leakage current and are remotely transmitted,