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 _    _     _____      _____    _____     _____   
| \  / ||  |  ___||   / ___//  |  ___||  / ____|| 
|  \/  ||  | ||__     \___ \\  | ||__   / //---`' 
| .  . ||  | ||__     /    //  | ||__   \ \\___   
|_|\/|_||  |_____||  /____//   |_____||  \_____|| 
`-`  `-`   `-----`  `-----`    `-----`    `----`

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Text this: A fast synchronously rotating reference frame-based voltage sag detection under practical grid voltages for voltage sag compensation systems