Voltage Stability Enhancement in SCIG Based Wind Farm Using Facts with Unbalanced Fault
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 4
Abstract
The stability of fixed speed wind turbines can be improved by a STATCOM, which is well known and documented in literature for balanced grid voltage dips. Under unbalanced grid voltage dips the negative sequence voltage causes additional generator torque oscillations. In this paper investigations on a fixed speed wind farm with squirrel cage induction generators(SCIG) directly connected to the grid in combination with a STATCOM under unbalanced grid voltage fault are given by means of theory and simulations and also different kinds of control methods are discussed. The simulation results clarify the effect of positive and negative sequence voltage compensation by a STATCOM on the operation of a SCIG wind farm.
Authors and Affiliations
Mr. M. Vimalraj, Mr. B. Alex, Mr. P. Raghavendran, Mr. D. Venkata Ramana
Keywords
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