METHOD OF NOISE REMOVAL DURING PARTIAL DISCHARGE MONITORING FOR DIAGNOSIS AND ACCIDENT PREVENTION IN POWER SYSTEM

摘要

PURPOSE: A noise removing method in partial discharge measurement is provided to minimize misjudgment about an external noise and to accurately distinguish a partial discharge signal which is generated in electrical equipment. CONSTITUTION: A noise removing method in partial discharge measurement for a power system prevention diagnosis includes a step for passing original sensor data which is sensed by a partial discharge sensor of equipment through band pass filters(11,12) which set up a frequency band in a matrix switch(10); a step for removing external noise which is sensed in a noise sensor which is installed in the outside of the equipment from the sensor data which is passed through the band pass filters; a step for determining the type of the partial discharge signal and whether the noise is sensed or not by analyzing through a neural network engine(30) which has pre-learned data.