A positive-sequence current based directional relaying approach for CCVT subsidence transient condition

Protection and Control of Modern Power Systems

Table 1 Results for b-c in reverse side with PFSC in CCVT secondary, SIR = 30

Fault locationin km	Fault inception Angle	Method-1	Method-2	Method-3	Proposed method
Fault locationin km	Fault inception Angle	ϕ ₁ (rad)	ϕ ₂ (rad)	ϕ ₃ (rad)	θ (rad)
5	0°	1.951	0.6180	−0.5766	0.4580
25	0°	1.921	0.6258	−0.7199	0.4686
45	0°	2.043	0.6677	−0.4975	0.4279
5	45°	1.956	0.5320	−0.4078	0.6206
25	45°	1.871	0.5220	−0.7646	0.5816
45	45°	1.953	0.5269	−0.4359	0.5944
5	90°	2.271	1.023	−2.274	0.228
25	90°	2.148	0.980	−1.901	0.298
45	90°	2.080	0.832	−2.160	0.277
5	180°	1.735	0.640	−0.549	0.454
25	180°	1.665	0.652	−0.694	0.477
45	180°	1.745	0.648	−0.561	0.478