Modeling Electromechanical Overcurrent Relays Using Singular Value Decomposition

Table 8

Comparison of results by ANFIS and SVD for the CRP9 relay.

𝑀	Top	ANFIS	Err1	Err1%	SVD	Err	Err%
	TDS=4
4	1352	1368	16	1.18	1352.00	0.00	0.00
8	605	609	4	0.66	605.00	0.00	0.00
12	459	456	3	0.65	459.00	0.00	0.00
16	375	374	1	0.27	375.00	0.00	0.00
20	358	356	2	0.56	358.00	0.00	0.00
			AV = 5.2	AV% = 1.59^★		AV = 0.00	AV% = 0.00
	TDS=7
4	2459	2477	18	0.73	2459.00	0.00	0.00
8	1153	1132	21	1.82	1153.00	0.00	0.00
12	894	883	11	1.23	894.00	0.00	0.00
16	744	739	5	0.67	744.00	0.00	0.00
20	669	665	4	0.60	669.00	0.00	0.00
			AV = 11.8	AV% = 0.61^★		AV = 0.00	AV% = 0.00
	TDS=10
4	3935	3963	28	0.71	3935.00	0.00	0.00
8	1754	1738	16	0.91	1754.00	0.00	0.00
12	1304	1305	1	0.08	1304.00	0.00	0.00
16	1123	1124	1	0.09	1123.00	0.00	0.00
20	1024	1027	3	0.29	1024.00	0.00	0.00
			AV = 9.8	AV% = 0.64^★		AV = 0.00	AV% = 0.00

M: multiples of tap value current; TDS: time dial setting; top: actual operating time in milliseconds; ANFIS: fitted value by adaptive network and fuzzy inference system; Err1: absolute value of difference between top and ANFIS value; Err1%: absolute value of difference between top and ANFIS in percentage; SVD: fitted value by singular value decomposition; Err: absolute value of difference between top and SVD value; Err%: absolute value of difference between top and SVD value in percentage; AV: average of absolute values of errors in milliseconds; AV%: average of absolute values of percentage errors; ^★refer to [9].