Please suggest how to get device name of device which triggers scene (in my case it is fibaro water sensor) and pass it as variable to luup.wget ?
The easiest way is to add code to each trigger’s Luup Event to pass the device name as a global variable. See http://forum.micasaverde.com/index.php/topic,32128.msg233422.html#msg233422.
The example code in that thread uses an integer number to identify the source of the trigger but you could use a string containing the name you want to use.