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This paper investigates the effect of two HVDC grid segmentation topologies i.e. hybrid HVAC-HVDC and standalone HVDC on the transient stability of a 15-bus electric grid. For this purpose, four HVDC station configurations and three HVDC technologies are considered. A three phase AC fault is applied at one of the buses and the rotor angle of one of the generators is analyzed. The results show that...
The recent development of power electronic technology encourages to use variable speed wind turbine (VSWT) driving a doubly fed induction generator (DFIG), wound field synchronous generator (WFSG) or permanent magnet synchronous generator (PMSG) for wind power generation. Among those, stability analysis of DFIG type of VSWT has already been reported in many literatures. On the other hand, stability...
This paper discusses the modelling adequacy and control tuning of the doubly-fed induction generator (DFIG) for power system stability study. It is seen that the stator and rotor electrical dynamics should be considered when tuning the controllers. Once an appropriate set of control parameters are obtained the DFIG model is simplified whereby all electrical transients, both stator and rotor, are neglected...
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