Data-Driven Fault Diagnosis Method for Power Transformers Using Modified Kriging Model

Table 3

Some test results (μL/L).

Serial number	H2	CH4	C2H6	C2H4	C2H2	Fault type
						Actual fault	Fault analysis
()	93	58	43	37	0	Middle temperature overheating	Middle temperature overheating
()	139	52	6.8	63	9.6	Middle and low temperature overheating	Middle temperature overheating
()	19.6	320.7	279.2	574.7	0	High temperature overheating	High temperature overheating
()	457	79	54	190	2.4	High temperature overheating	High temperature overheating
()	279	41	18.1	42	31.8	High energy discharge	High energy discharge
()	14.67	3.68	10.54	2.71	0.2	Normal	Normal
()	345	112.25	27.5	51.5	58.75	Low energy discharge	Low energy discharge
()	217.5	40	4.9	51.8	67.5	High energy discharge	High energy discharge
()	181	262	210	528	0	Middle and low temperature overheating	Low temperature overheating
()	44.3	17.3	3.6	23.3	10.4	High energy discharge	High energy discharge
()	172.9	334.1	172.9	812.5	37.7	Partial discharge	Partial discharge
()	12.26	8.86	13.95	18.21	0	Normal	Low energy discharge
()	56	78	18	173	0	Low temperature overheating	Low temperature overheating