The nonuniform texture of the bulk power transmission system has significant implications on its dynamics. In our work, the real-power-angle dynamics and its analysis under the implications of the clustered texture of the power system are theoretically and computationally investigated. In addition to dynamic clusters, we explore coherency based clusters in power systems; the relationships and the distinctions between the two types of clusters are given. We also develop an algorithm which decomposes the system into coherency based clusters. The stability analysis of the intercluster dynamics and oscillations related to Hopf bifurcations is carried out through feasibility boundary calculations for the system. In the thesis, it is emphasized that the oscillatory instabilities relevant to intercluster dynamics can be remedied by a system-wide instead of a cluster-wise control.
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