Analysis of Transient Torques in Synchronous Machine at Multi-Phase Reclosing

A method is presented which calculates approximately the electrical torque in synchronous machine at multi-phase reclosing, neglecting subtransient saliency and electrical decrements. A new digital simulation program, with some examples of digital calculations, is presented in detail which is used to analyze the transient phenomena accompanying power swings at multi-phase reclosing, after multi open conductors following the fault.