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 __   __     ___     _    _      ___      ______  
 \ \\/ //   / _ \\  | \  / ||   / _ \\   /_   _// 
  \   //   / //\ \\ |  \/  ||  | / \ ||  `-| |,-  
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Text this: An application of improved synchronous reference frame-based voltage sag detection in voltage sag compensation system