أرسل هذا في رسالة قصيرة: Frequency Control of Electricity Grid Integrated with Variable Generation Using Pumped Storage Hydro Power Plant

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