Effect of Synchronous-Machine Transient Rotor Saliency on Changes in Terminal Voltage [includes discussion]

This paper presents the results of calculations made to determine the magnitude of the error in measurements of changes in bus voltages resulting from the assumption of a symmetric-rotor synchronous machine as usually made in transient stability studies on the a-c network analyzer. It is found that in some cases the effect of transient rotor saliency is important. (See the Appendix for explanation of terms.) In such cases the curves of this paper may be used to help estimate the magnitude of the error involved.