TRANSIENT PERFORMANCE OF A SYNCHRONOUS GENERATOR UNDER LOADING CONDITIONS

Abstract

This thesis deals with the el+iotrioaj and eleotro-*eohanioal stability of a syn. w/o with a balanced resistance, Inductance and capacitance connected in series with the ' armature circuit. The analysis is an extension of the two reaction theory and equations relating only d and q axes quantities are derived. Expressions for sudden short circuit components are found out. 'Mouth's oriterian is then applied to the common denominator and conditions for self-excitation are derived, The small displacement theory is introda0ed to linear-ize the non-linear equation of the syn, a/o and then organised in a proper form, to be represented by a closed loop system. Nyquist oriterian is then applied to ascertain the stability of the system for different conditions. Meerov's oriterian for aperiodic stability is also applied to get an idea about the transient performance of the machine for a step input