Table 2 Comparison of protection performance under different fault resistances.

From: Active line model identification protection based on characteristic frequency phase for dual-end weakly-fed AC system

Fault resistances

arg (ZH)(°)

Protection operation time(ms)

a phase

b phase

c phase

a phase

b phase

c phase

10Ω

77.82

− 85.54

− 94.07

6.40

  

50Ω

58.75

− 85.92

− 93.67

7.75

  

100Ω

41.43

− 86.27

− 93.29

9.00

  

200Ω

26.34

− 86.59

− 93.01

10.45

  

300Ω

13.43

− 86.87

− 92.74

12.50

  
Back to article page