Browsing by Author "TESFAYE BELAY"

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    ASSESSMENT AND ENHANCEMENT OF THE TRANSIENT STABILITY OF DFIG BASED WIND FARM USING ANFIS (A Case Study of ADAMA II Wind Farm)
    (Hawassa University, 2021-12-18) TESFAYE BELAY
    Wind power is the greatest existing and used form of renewable energy in the world. Mixing the different wind farms to the national grid introduces new challenges regarding power system stability, among power system stability concerns; transient stability is one that significantly affects the grid. The objective is to assess and enhance the transient stability of DFIG based on wind farms, to model PI control for speed and slip control generator, to improve transient stability using thyristor control series capacitor (TCSC), to conduct during pre-fault, during fault, and post fault conditions. The methods to gathering data are through review of different papers, by asking the site workers, preparing questions for the worker, and from nameplates of equipment. The result consists of four conditions, the first condition is pre-fault conditions, the systems have no disturbance, the second condition is during a fault condition, all systems are disturbed, the third condition is posted fault conditions in this systems have no disorder and the fourth is the improvement of the systems by using TCSC, TCSC is injecting reactive power to the fault area and remove the fault from the systems or back to normal operations. Generally, stability has contained three scenarios pre-fault, during the fault, and post-fault condition. In Matlab Simulink, the pre-fault and post-fault have no disturbance, but during fault conditions, the systems disturbed and the disturbed systems are solved by TCSC at the improved conditions of the systems.