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The Power/Voltage characteristics (PV curve) of a Doubly Fed Induction Generator (DFIG) is not as well understood as those of synchronous generators. This is becoming a serious concern because of the fast growth of large-scale wind generation, which uses the DFIG technology. A PV curve describes the relation between injected active (real) power and voltage at a receiving bus, taking into consideration...
The increasing penetration of wind energy in power systems has forced operators worldwide to develop new grid codes to integrate this form of generation. One important aspect of the problem is the low-voltage ride-through capability of wind generators. This paper describes a solution for wind farms with squirrel-cage asynchronous generators based on the use of a dynamic voltage restorer. Along with...
It is proposed in this paper a methodology to obtain optimal controllers gains for the rotor-side converter of doubly fed induction generators (DFIGs) using a genetic algorithm approach. The main objective is to enhance the operational security and robustness of the power system, by a more effective contribution of the DFIG controllers to the system controllability. To reach this goal, the crow-bar...
Wind energy is becoming the most viable renewable energy source mainly because of the growing concerns over carbon emissions and uncertainties in fossil fuel supplies and the government policy impetus. The increasing penetration of wind power in distribution systems may significantly affect voltage stability of the systems, particularly during wind turbine cut-in and cut-off disturbances. Currently,...
In this study, the voltage stability of the bus load in various static and dynamic load systems that are fed by a wind farm has been examined. In the control of load voltage and reactive power, 10 MVAr static synchronous compensator (STATCOM) and static VAr compensator (SVC) is used. In the wind farm examined, Double Feed Induction Generator (DFIG) is used. In voltage and reactive power control, the...
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