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A Distributed Generation (DG) unit can be operated either in grid-connected mode or in autonomous mode and has to possess the essential dynamic stability in both cases. This paper presents a systematic approach to small-signal modeling of an inverter based DG unit in grid-connected, autonomous and transient from grid-connected to autonomous modes of operation. A first order eigenvalue sensitivity...
This paper deals with the modelling and effect of Doubly Fed Induction Generator (DFIG) for wind turbines on transient stability analysis when connected to grid system. A reduced order model for the DFIG has been used. A controller for speed, voltage and power factor has also been implemented. The DFIG model and the controller are presented as Differential Algebraic Equations (DAE). A 7th order model...
In this paper, a method of structural analysis and control of voltage stability in electric power system is proposed based on Generalized Tellegen's theorem. According to the change of power network topology structure, power network will be divided into fundamental network and derivative network. Because Generalized Tellegen's theorem can connect the network topological structure and parameter with...
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