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A research on differences of latest Grid Code requirements for wind farm integration between China and selected EU countries are conducted. The similarities and differences of these Grid Codes in the aspects of low voltage ride-through ability, transient fault ride-through requirements, negative phase sequence requirements and reactive power control requirements are compared. The main causes of these...
The choice of Doubly-fed induction generator (DFIG) operation strategy has a significant impact on voltage stability. Now there are two types including constant-power factor and constant-voltage control and their essential differences are different control strategies between the scheduling of reactive power and voltage control. The article presents control strategies of wind generator on two kinds...
Wind farms are confronted with increasing demands for power quality and fail-safe operation at grid fault. State-of-art techniques applied to meet low voltage ride-through (LVRT) requirements for fix speed wind farms are blade pitching and dynamic reactive power compensation. Besides, breaking resistor and energy storage unit is also helpful to LVRT performance. However, these approaches have their...
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