Enormous penetration of wind power in power systems and its contribution in covering a major part of grid load demand, require higher stability during disturbances. The most important issue of wind generators is the early outage of several generating units when a sudden voltage drop occurs in the grid. Voltage drops near wind generators are mainly due to abrupt load rises and integration of large-scale factories and industrial units into the grid. In this paper, the case study of Binalood wind farm is studied, analyzed, and simulated. Then, various proposed methods are investigated in terms of stability enhancement such that when a disturbance appears near the Binalood wind farm, it can hold up its stability and connection to the grid. Simulations are carried out using Matlab and Simulink.
-The Active Superconducting Current Controller (ASCC) is a new type of Superconducting Fault Current Limiters (SFCL) which can limit the fault current in different modes. It also has the particular abilities of compensating active and reactive powers for electrical networks. In this paper, it is confirmed that the performance of ASCC in different operating modes introduces a limiting impedance in series with the network which can even degrade the transient stability and the operation of the Over-Current Relays (OCR) employed in a power system. In addition, the model of a three-phase ASCC is simulated, and the effect of descriptive modes on the current limiting level is investigated. For the transient stability analysis, a single machine-infinite bus system is tested, and the effect of operation modes is studied based on an equal area criterion obtaining the critical time and the critical angle. Modifying the setting parameters of OCR such as time dial and pick-up current, the protective coordination is also studied in different operating modes.
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