Multiparameter-Based Fuzzy Logic Health Index Assessment for Oil-Immersed Power Transformers

Table 6

Corresponding scores obtained as per the values of the test data and HI results.

Tx. no	H2	CH4	C2H2	C2H6	C2H4	CO2	CO	Moisture	Acidity	BDV	DDF	IFT	Colour	HST (°C)	Load pu	DP	DGAF	OQF	FF	Health index
Tx1	3.06	4.1	9.02	2.15	1.45	5.63	5	6	3.5	2.4	2.75	2.5	2.5	60	0.58	643.4	30.41	19.65	2.92	0.278	Good
Tx2	4.61	2.48	3.39	9.7	3.32	2.01	1.35	6.5	5.75	4	3.53	4.64	5	61	0.6	443.5	26.86	29.42	5.1	0.657	Moderate
Tx3	0.81	0.95	5.89	0.98	1.07	4.48	4.98	3.25	2.9	1.95	2.96	3.57	5	49	0.57	725.1	19.16	19.63	3.58	0.28	Good
Tx4	1.85	4.53	5	8.23	6.79	12.83	31.78	9	7	5	3.54	6.5	7.5	78	0.61	172.7	71.01	38.54	5.97	0.992	Worst
Tx5	1.78	1.35	3.48	6.33	3.93	5.24	4.15	4.5	6.25	5.5	3.03	5	7.5	58	0.44	524.8	26.26	31.78	2.53	0.498	Moderate
Tx6	2.53	2.57	0	2.12	3.37	6.27	5.68	8	4.5	3	3.43	4.29	2.5	66	0.65	786.3	22.54	25.72	2.5	0.275	Good
Tx7	5.63	3.53	14.38	9.15	6.99	2.49	9.08	6.6	8.78	2.42	4.74	3.93	12.5	75	0.72	109.9	51.25	38.97	6.32	0.944	Bad
Tx8	6.81	4.96	6.7	16.15	12.38	8.49	8.15	11.5	7.25	6.25	5.47	4.29	15	66	0.48	262.5	63.64	49.76	5.81	0.992	Worst
Tx9	3.12	6.45	4.5	10.6	36.2	7.82	4.78	1.5	4	2.75	2.5	1.88	7.5	77	0.75	494.8	73.47	20.13	4.53	0.528	Moderate
Tx10	2.76	2.21	5.18	14.9	40.43	2.35	2.14	16	8	3.5	3.26	6	12.5	64	0.45	248.7	69.97	49.26	5.97	0.991	Worst
Tx11	2.71	0.17	5.09	7.55	0.5	2.32	2.12	1	5.5	1.8	5.33	3.58	5	68	0.5	665.7	20.46	22.21	2.83	0.248	Good
Tx12	4.91	4.71	18.93	4.41	5.18	1.14	1.16	1.83	2.5	1.5	2.58	1.5	1.67	81	0.82	725.2	40.44	11.58	2.67	0.275	Good
Tx13	5.44	6.34	2.5	0.23	0.9	1.88	1.73	1.5	2	1.45	1.7	0.63	0	56	0.55	992.8	19.02	7.28	0.75	0.12	Excellent
Tx14	2.89	6.08	3.84	6.32	3.93	3.91	2.54	1	1.5	1.7	3.17	1.13	1.67	53	0.6	725.1	29.51	10.17	2.25	0.121	Excellent
Tx15	3.91	5.51	20.71	1.19	3.06	7.24	4.89	2	2.5	1.75	3.87	3.21	5	50	0.66	638.3	46.51	18.33	3.09	0.525	Moderate
Tx16	0.38	0.17	0	0.35	0.25	7.97	5.72	1.67	1.5	2.25	2.81	1	1.67	61	0.44	756.2	14.84	10.9	2.5	0.12	Excellent
Tx17	6.08	0.08	2.5	0.15	0.5	7.08	4.55	1.67	4.5	1.9	6.17	2.86	5	53	0.5	594.4	20.94	22.1	4.53	0.348	Good
Tx18	3.92	6.16	9.29	3.01	3.06	8.89	8.55	11	8.75	2.25	3.93	3.93	12.5	77	0.62	217.4	42.88	42.36	6.13	0.991	Worst
Tx19	1.88	0.92	0	5.26	0.65	8.23	1.86	15	4.6	7.25	4.8	5.5	12.5	61	0.55	325	18.8	49.65	5.31	0.931	Bad
Tx20	2.84	1.65	6.25	2.15	1.45	0.71	1.38	5.6	11.23	6.63	3.48	6.5	15	50	0.5	109.9	16.43	48.44	7.2	0.992	Worst