Abstract
Problem statement: An inherent problem with wind turbine power generation systems is the low power quality due to intermittent power generation in these systems. This not only affects the power generation but also the grid it is connected to. Approach: In this study a configuration consisting of a 6MW Wind Farm based on conventional Fixed Speed Induction Generator is analyzed. To improve the transient stability in the wind turbine generator a STATCOM is introduced in the system as an active voltage/var supporter. The impact of the introduced STATCOM and subsequent performance improvement in the power quality is studied. Results and Conclusion: The improved short-term voltage obtained when a STATCOM is introduced under various wind speed conditions is quantified. It is proved that STATCOM has a direct impact on reliability, however SVC needsto be studied due to their lower cost.
Highlights
INTRODUCTIONWith the percentage of wind energy generated increasing; continuous connection of wind farms to the grid plays a crucial role in enabling uninterrupted power supply to the load, even in the case of minor disturbances
With increase in penetration in the wind power, it has become necessary to address problems associatedWind power is a sustainable method to generate electrical energy by converting wind power to an alternate energy and in turn convert the same into electrical energy
A major disadvantage of wind energy distribution systems connected to a weak grid is generation of with maintaining a stable electric power system that may include different sources of energy including hydro, thermal, nuclear and solar (Ahilan et al, 2009)
Summary
With the percentage of wind energy generated increasing; continuous connection of wind farms to the grid plays a crucial role in enabling uninterrupted power supply to the load, even in the case of minor disturbances. With wind farm capacity continuously being increased through the installation larger wind turbines, voltage stability and an efficient fault ride through capability are the key factors for successful penetration of wind energy in the electrical network. When the fault is cleared the voltage is not stabilized immediately and the generator continues to accelerate and consumes even larger amount of reactive power (Hossain et al, 2009). To overcome this problem active voltage regulators can be used. It is shown that transient and short term stability can be achieved with the introduction of STATCOM in the system
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