A high-precision arrester resistance current and capacitance current on-line monitoring device

Abstract

The utility model discloses a kind of high-precision lightning arrester resistive current and capacitive current on-line monitoring device, it is related to lightning arrester monitoring technical field, including: monitor, the inside installation of monitor has monitoring component, the monitoring component includes zero flux sensor, current transformer, analog signal conditioning module, AD sampling module, MCU module, storage module, communication module and power module, the zero flux sensor and current transformer are installed in the inside of monitor, the analog signal conditioning module, AD sampling module, MCU module, storage module, communication module and power module are connected in the circuit board in the inside of monitor. The method for determining lightning arrester failure by resistance-capacitance ratio, leakage current, number of actions is adopted in the utility model, accurate nonlinear resistive current data is obtained by taking bus voltage phase as reference, accurate resistance-capacitance ratio is obtained, and the waveform of fault is recorded, which facilitates fault analysis.

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