Table 2.

Comparison of signal filtering methods in the saturation mode of current transformers when determining the angle and the effective value of signals according to M2.

Method and Reference	Computational Experiment 1				Computational Experiment 22				Computational Experiment 3				Computational Experiment 4
	${\mathit{f}}_{\mathit{i}}$, %		$\Delta \mathit{\phi }$, °		${\mathit{f}}_{\mathit{i}}$, %		$\Delta \mathit{\phi }$, °		${\mathit{f}}_{\mathit{i}}$, %		$\Delta \mathit{\phi }$, °		${\mathit{f}}_{\mathit{i}}$, %		$\Delta \mathit{\phi }$, °
	Max	Avg.	Max	Avg.	Max	Avg.	Max	Avg.	Max	Avg.	Max	Avg.	Max	Avg.	Max	Avg.
A1 [11,12]	3.7	2.5	0.7	0.2	45	43	12	6.6	4.3	1.7	3	1.7	43	42	14	8
A2 [15,16,17]	1	0.4	0.7	0.3	0.7	0.3	0.4	0.16	27	15	19	11	48	26	27	15
A3 [18]	37	26	30	24	37	25	30	24	84	78	109	93	84	78	110	93
A4 [19,20,21,22,23,24,25]	2	0.4	3.5	2	1	0.2	1	0.7	2	1	1.6	1.3	2	0.8	1.5	1.2
A5 [28,29,30]	7.6	5.6	2	1	9	7	2	1	6.5	5	1.3	0.4	10	7	8	2