Investigation of Low Voltage Ride through Capability of a Real Time Wind Farm

SEEE DIGIBOOK ON ENGINEERING & TECHNOLOGY, VOL. 01, FEB 2018 PP.(196-202)
Abstract– The interaction between wind farms and the grid will be an important aspect in the planning of wind farms. It is essential to ensure that the generators remain connected to the grid under fault conditions in order to improve the transient stability of the network. This work investigates the performance of a direct drive permanent magnet synchronous generator (PMSG) based real wind farm. The study deals with the behavior of a wind turbine (WT) under steady state and fault conditions. Real time data has been used to simulate the wind farm using digital simulation and electrical network calculation program (DIgSILENT) software. The average size of WT installations has increased due to the advent of larger capacity machines, the rise of integration rate of wind energy could lead to propagation of transient stability and could potentially cause local or system wide blackout. This has provoked many utilities to adopt low voltage ride through capability (LVRT) and it must be satisfied by each generator as per the requirements imposed by the Indian grid code. Nevertheless, the WTs do not have the LVRT capability in the current scenario. Therefore, in order to improve the transient stability of power system, the control circuit of the PMSG should be modified to provide reactive power support to the network as per the grid code or FACTS devices can be connected that improve the LVRT capability of the machine.
Index Terms – PMSG, DIgSILENT, Low Voltage Ride Through (LVRT)
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K.ROSHAN JABEEN, K.YASODA
Government college of Technology,
Coimbatore, India
rjroseroshni@gmail.com,
yasoda@gct.ac.in

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