Research on Dynamic Load Identification Based on Explicit Wilson-θ and Improved Regularization Algorithm

Table 2

Regularization parameters and relative accumulation errors of harmonic load.

Sampling frequency (Hz)	Noise level (%)	Regularization parameter		Error (%)
		IRA	Tikhonov	IRA	Tikhonov
500	0	1e − 16	1e − 17	0.951661	3.896035
	10	1e − 14	2e − 15	3.087554	5.168342
	20	5e − 13	2e − 15	5.093864	9.398055
	30	1e − 12	3e − 15	7.489087	11.361723
1000	0	1e − 16	1e − 17	0.166175	0.20726
	10	1e − 14	2e − 15	2.119125	4.458908
	20	5e − 13	6e − 15	3.797509	7.188128
	30	1e − 12	3e − 15	5.182875	10.441882
2000	0	1e − 14	1e − 16	0.099846	0.316657
	10	1e − 13	1e − 15	2.02805	3.813177
	20	5e − 13	6e − 15	2.582656	5.145480
	30	4e − 12	5e − 15	3.340285	8.215345