This module presents modelling of major components in interconnected electricity network for stability analysis and control from system perspective. The knowledge provided will involve how power system behaves during and after the steady operating equilibrium is disturbed. It will provide understanding of the mechanism of interactions between major components in the systems. Both synchronous, asynchronous generation technologies, their associated control for system voltage, frequency support will be explained.

On successfully completing this module you should be able to: 1 Develop model for power generation systems - both synchronous and asynchronous - for power system dynamic studies. 2 Interpret the parameters of the common dynamic modelling blocks in a power system dynamic simulation software. 3 Assess and validate generation system dynamic response through frequency domain analysis, eigen-value analysis and other common dynamic system analysis tools. 4 Evaluate system stability margins for control design in power systems control.

Module A: Synchronous generation modelling for stability studies (i) overview of power system stability problem, definition, power system structure, classification and characterisation of the problems over different time scales. (ii) transient stability, small signal stability (iii) Operating models of fuel supply, furnace boiler and reservoir. (iv) turbine, hydro turbine, steam turbine, governor, generator (v) Park Transformation or d-q Transformation. (vi) Dynamic model of synchronous machine in d-q reference frame. (vii) Modelling of prime mover and generator mechanical dynamics as lumped mass (viii) Development of swing equations, H constants of machines (ix) Machine network co-ordinate transformations Module B: Wind generation stability modelling and analysis (i) Principle of operation of Type 1 (Squirrel cage induction machine) and Type 2 (slip ring induction machine); (ii) Principle of operation of Type 3 (doubly fed induction generator) and Type 4 (full converter induction generator FCIG) (iii) Dynamic modelling ( transient and small signal stability) of Type 1 wind generator in d-q reference frame (iv) Dynamic modelling ( transient and small signal stability) of Type 2 wind generator in d-q reference frame will be detailed (v) Dynamic modelling of Type 3 wind generator for transient stability and small signal stability wind generator in d-q reference frame (vi) Dynamic modelling of Type 4 wind generator for transient stability and small signal stability wind generator in d-q reference frame (vii) Model for voltage, power control and pitch control (viii) Modelling of interface to power system (ix) Overall small signal model including synchronous and wind generations (ix) Stability analysis of single wind turbine generator connected to the grid (single machine infinite bus SMIB approach)