Modeling of a multi-machine system aided with power system stabilizers and shunt compensator for transient stability enhancement

摘要

This paper proposes a simplified modeling approach for a multi-machine power system with conjoined focus on enhancement of both aspects of transient stability, i.e., rotor angle stability and voltage stability. The user-friendly and compact model is conceived to be advantageous in practical implementation. Damping of rotor angle oscillations is achieved by means of a power system stabilizer devoted to each generator and bus voltage stability is realized by a shunt compensator. To test the effectiveness of the proposed model, MATLAB simulations are performed under challenging conditions of fault and loadability. It is found that the model is expedient in delivering a superior performance in addressing the issue of transient stability by virtue of increased critical fault clearing time, augmented power transfer capability and ability to withstand indeterminate load changes. A significant feature of this model is that it provides scope for easily being extended to include other power system stability enhancement devices like other FACTS devices and energy storage systems.