Table 2 Equipment operation state classification.
From: Research on digital twin diagnosis model for the thermal-electric field of high-voltage switchgears
Discharge Level | Pulse Amplitude (V) | Pulse Width (ms) | Temperature Rise (°C) | State Index | Description |
|---|---|---|---|---|---|
I | 4 ~ 10 | 0.76 ~ 0.88 | 0 ~ 2.0 | 0.85 ~ 1 | Corona Stage |
II | 2 ~ 5 | 0.68 ~ 0.84 | 2.0 ~ 6.3 | 0.65 ~ 0.85 | Spark Stage |
III | 1 ~ 3 | 0.68 ~ 0.80 | ≥ 6.5 | 0 ~ 0.65 | Breakdown Stage |
