Patent ID: 9404957
Filing Date: 2016-08-02
CPC Classification: G01H,G01R

Claim Text:
1. A method, comprising providing at least three vibration sensors, a conversion interface, a data collection module and a data analysis module; collecting transformer vibration signals with a set sampling frequency and time by using the three vibration sensors; then delivering the vibration signals to said data collection module via a conversion interface; detecting a loosening core in a transformer and locating an initial position of the loosening core; wherein the three vibration sensors are fixed on three positions of a power transformer tank top surface, and the three positions on the top surface correspond to the three-phase winding positions of the power transformer tank; wherein said data collection module is used to sample and record transformer vibration signals from the three vibration sensors, then deliver to a data analysis module; and wherein the data analysis module stores and analyzes data and diagnoses a fault, finally outputs a result.