Rotor Angle Stability

The ability to remain in synchronism under normal and disturbed conditions.

Last Updated:  June 19, 2025

Version:  1.0.0

Generated:  December 04, 2025

Definition in an Article by a Task Force

Source:

Rotor angle stability is concerned with the ability of the interconnected synchronous machines in a power system to remain in synchronism under normal operating conditions and to regain synchronism after being subjected to a small or large disturbance.

Definition in a European Union Regulation

Source: p7

‘rotor angle stability’ means the ability of synchronous machines to remain in synchronism under N-situation and after being subject to a disturbance;