Robust WAM-based controller coordination of FACTS devices for power system transient stability enhancement

Sushama Wagh

    Research output: ThesisDoctoral Thesis

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    Abstract

    [Truncated abstract] This thesis is devoted to the development of new schemes for transient stability enhancement using FACTS (flexible alternating current transmission system) devices, and the control coordination of power systems with FACTS devices in transient state of post-fault scenario. The key objectives of the research reported in the thesis are, through online control coordination based on the models of power systems having FACTS devices, those of maximising and restoring system transient stability following a disturbance or contingency. The new schemes are developed in two steps with increasing complexity in modeling and in terms of considering the size of power system. In the first part of the thesis, explaining detailed dynamic modeling of power system components with a comprehensive literature review of controllers used in power system, a new model predictive control based TCSC controller is designed, developed, and implemented for SMIB. The key contribution of this new MPC-based TCSC controller is the application of MPC methodology to power systems which is represented by detailed dynamic modelling and coordinated with power system primary controllers i.e. exciter and prime-movers. The simulation study is carried out with a single-machine-infinite-bus system and the effectiveness of the new controller is validated. Having established the foundation provided by the comprehensive models developed for representing power systems with FACTS devices, including the TCSC, the research in the second part focuses on real-time control coordination of power system controllers, with the main purpose of restoring power system stability following a disturbance or contingency.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Publication statusUnpublished - 2011

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