Abstract
When a Double Fed Induction Generator (DFIG) primarily based Type-III Wind Turbine (WT) is connected to the grid without a digital power interface, the terminal voltage or reactive electricity output can’t be managed accordingly. Many techniques have been developed to overcome the issue of low voltage due to faults. This paper tries to define such active methods by presenting a complete analysis of LVRT strategies for DFIG-based Wind Energy Conversion Systems (WECS) in terms of overall adaptive performance, operation complexity of controllers, and cost-effectiveness. This paper aims to highlight the methods of increasing the ability of LVRT relying on the configuration of the relationship into 3 major areas according to its grid integrations. Shunt connections of FACTS devices are used in WECS to study their effectiveness and benefits. The system models are simulated in MATLAB/Simulink and the results are discussed.
Highlights
Wind Turbines (WTs) are focusing on power system stability using grid integration to enhance power quality during faults [1]
This paper examined the activity of FACTS devices and the advancements for Low Voltage Ride Through (LVRT) ability improvement of Type III WTs dependent on Double Fed Induction Generator (DFIG) with WTs, which is generally another idea in keeping up the voltage profile of the wind power generation
FACTS devices connected in parallel to the grid were used, which can compensate the voltage during faults or transients due to variations of wind speed
Summary
Wind Turbines (WTs) are focusing on power system stability using grid integration to enhance power quality during faults [1]. One of the significant necessities with respect to grid voltage control is the capacity of Low Voltage Ride Through (LVRT) [1]. Depending on this principle, the WT must be connected to the grid when the voltage is above a certain threshold. WTs can be disconnected from the grid only when the normal voltage profile is dropped close to the LVRT requirements and power must be injected to protect the voltage of the energy devices [2]
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