أرسل هذا في رسالة قصيرة: Protection of line faults in HVDC grids through convexity detection in backward traveling wave voltages

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