METHOD AND APPARATUS FOR MEASURING ISOLATED GROUND RESISTANCE OF POWER FACILITY OF EXISTING POWERLINE

摘要

The present invention relates to a method and apparatus of measuring a support single ground resistance of an existing power line. The present invention is to disclose the apparatus of measuring ground resistance, including: a pulse generator for applying an impulse power between auxiliary electrodes for measuring ground electrodes and current; a current measuring unit for measuring the current between the ground electrodes and the auxiliary electrodes; a voltage measuring unit for measuring the voltage between reference electrode for measuring the ground electrodes and voltage; and a measurement signal processing unit for extracting a frequency spectrum of ground impedance by converting the current and voltage signals that are measured from the current measuring unit and the voltage measuring unit into digital values respectively, and determining whether the frequency spectrum of the ground impedance converges. [Reference numerals] (10) Target measuring support; (110) Pulse generator; (120) Current measuring unit; (130) Voltage measuring unit; (140) Measurement signal processing unit