A Fault Diagnosis Method of High Voltage Circuit Breaker Based on Moving Contact Motion Trajectory and ELM

Table 2

Feature extraction of circuit breaker in various conditions.

Status	CHV
	MT (ms)	CD (mm)	OT (mm)	OS (mm)	OV (mm)	CV (m/s)
Normal close	96.182	15.277	133.621	3.206	118.344	3.42
	96.706	15.125	132.317	2.891	117.192	3.61
	97.237	14.324	132.695	2.796	118.371	3.29
Mechanism jam	79.385	8.468	108.219	1.895	99.751	2.81
	77.184	8.652	110.547	1.589	101.895	3.05
	85.982	10.626	122.524	1.967	111.898	2.58
Operating mechanism loosening	102.546	11.338	140.845	2.166	129.507	2.34
	110.361	12.466	145.784	2.452	133.318	2.35
	115.962	12.989	148.866	2.578	135.877	2.35