Table 3 Effect of variations in source impedance
From: A novel complex current ratio-based technique for transmission line protection
‘d’ (pu) | Percentage of source impedance at Gen-1 | |||
|---|---|---|---|---|
50% | 100% | 200% | 500% | |
0.1 | 0.48–0.71j | 0.55–0.78j | 0.53–0.92j | 0.58–0.27j |
0.2 | 0.50–0.80j | 0.58–0.72j | 0.55–0.77j | 0.60–0.32j |
0.3 | 0.53–0.75j | 0.60–0.55j | 0.57–0.56j | 0.62–0.27j |
0.4 | 0.58–0.55j | 0.63–0.50j | 0.60–0.45j | 0.65–0.93j |
0.5 | 0.61–0.52j | 0.65–0.65j | 0.62 - 033j | 0.68–0.86j |
0.6 | 0.59–0.62j | 0.62–0.57j | 0.61–0.42j | 0.66–0.32j |
0.7 | 0.56–0.53j | 0.58–0.92j | 0.58–0.67j | 0.64–0.78j |
0.8 | 0.55–0.92j | 0.57–0.86j | 0.56–0.82j | 0.59–0.62j |
0.9 | 0.52–0.96j | 0.55–0.77j | 0.54–0.86j | 0.56–0.56j |
1.0 | 0.47–0.87j | 0.49–0.89j | 0.53–0.72j | 0.55–0.65j |