| 1 | It has a magnitude as well as phase angle. | |
| 2 | If you would have picked the minus, you would have found a different phase angle, but you can't pick minus. | |
| 3 | Oscillation between interconnected synchronous machines in which the angles of deviation swing on both sides of a mean value. | |
| 4 | Corresponding to water hearing shaly sands, the CRL phase angel of oil-bearing shaly sands is large. Meanwhile, it increases with the increasing oil saturation . | |
| 5 | Transient angle instability makes the phase angle differences or power flows in vulnerable cutset branches increased, and yet emergency power control can restrain such increase. |