Improving Active Output Capacity of Large-Scale Wind Farm by Installation STATCOM

Abstract:

Some faults will result wind turbine generators off-grid due to low grid voltage , furthermore, large-scale wind farms tripping can result in severe system oscillation and aggravate system transient instability . In view of this, static compensator (STATCOM) is installed in the grid containing large-scale wind farm. A voltage feedforward control strategy is proposed to adjust the reactive power of STATCOM compensation and ensure that the grid voltage is quickly restored to a safe range. The mathematical model of the doubly-fed induction wind generator (DFIG) is proposed. The control strategy of DFIG uses PI control for rotor angular velocity and active power. 4-machine system simulation results show that the STATCOM reactive power compensation significantly improve output active power of large-scale wind farm satisfying transient stability, reduce the probability of the tripping, and improve the utilization efficiency of wind farms.

• Periodical: Advanced Materials Research (Volumes 588-589)
• Pages: 574-577
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.588-589.574
• Online since: November 2012
• Authors: Yan Juan Wu, Lin Chuan Li
• Keywords: Active Power, Fault, Low Grid Voltage, STATCOM, Wind Turbine Generator

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