A High Voltage Circuit Breaker Behavior Change Indices based on the Vibration Signature Analysis
Fast, accurate and noninvasive methods for a High Voltage Circuit Breaker (HVCB) condition assessment are hot topics since the first breaker has been utilized in the electrical power grid. The HVCB is the key to the stable power system, so its fault diagnosis is of great significance. The vibration signal obtained during the operation of the HVCB contains valuable information on its mechanical and structural integrity. Based on these premises, the paper present method for noninvasive HVCB condition assessment based on the vibration signature measurement. The proposed method is suitable for offline as well as online or monitoring based measurement systems. The core of the assessment method consists of variational mode decomposition and Higuchi fractal dimension estimation.