PSS Parameter Optimization Based on Comprehensive Damping Effect Method Aiming at Actual Grid Characteristics in Northern China

Table 1

PSS parameters of different methods (unit: 1).

Methods	T1	T2	T3	T4	Damping ratio
Engineering experience	0.21	0.02	0.3	0.03	0.1102
Phase-frequency optimization	0.21	0.01	0.22	0.01	0.1003
Damping force optimization	0.31	0.05	0.59	0.06	0.1775