Publication

Abstract : Wind energy is one of the fastest-growing sources of electricity in India and around the world since it is economical, clean and abundant.There are two major types of wind gen-erators, which are commonly used in wind farms. The first one is the squirrel cage induc-tion generator while the second is doubly fed induction generator. In this, squirrel cage induction generator is widely used due to its low cost, low maintenance rate and possible utilization under wind gusting conditions. But wind farms with induction generators while generating real power, consume reactive power. Due to grid faults, the over speed of the induction generator resulted from transient currents drawn by the induction generator from the electrical power system can exceed the stability limit resulting in collapse of the system and islanding operation. Thus operators worldwide have developed 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 gives a complete re-view of the power quality issues when using wind electric generators and different meth-ods that are being used to mitigate these problems till date.