Table 4 d12 and a1 of voltage signal statistics during the unstable, stable, and faulty conditions
From: A novel out of step relaying algorithm based on wavelet transform and a deep learning machine model
Voltage signal during | Co-efficient | Mean value | Median | Max value | Min value |
|---|---|---|---|---|---|
Unstable swing | d12 | 1.12e4 | 1.3 × 104 | 1.9 × 104 | − 3108 |
Stable swing | d12 | − 1594 | − 773.8 | 629.9 | − 5065 |
3-Phase fault | d12 | − 7577 | − 8803 | − 2061 | − 1.3 × 104 |
Unstable swing | a1 | 2632 | 5201 | 2.2 × 105 | − 2.3 × 105 |
Stable swing | a1 | − 25.4 | 68.84 | 1.8 × 105 | − 1.9 × 105 |
3-Phase fault | a1 | − 336.1 | − 452.2 | 1.5 × 105 | − 8.8 × 104 |