A Generalised Block Diagram Model for Small-Signal Stability Analysis of Multi-machine Multi-SVC Power Systems

This paper introduces a newly extended transfer function block diagram model which accommodites n synchronous generators and z SVC systems in a single frame-of-reference. The new simulation environment is used to conduct fundamental studies of dynamic interactions between synchronous generators and between synchronous generators and SVC systems. This method yields piysical insight and differs from the well-known state-space techniques. The system model includes ifti n ff dynamic representation of synchronous machines in terms of field and damper windings in dand q-axes. The small-signal dynamic performance of various system models, incorporating a different nu-6", of damper windings, are critically assessed. The simulations are carried out using frequency responses and step voltage responses.