To turn off the monitor (hybrid tablet) and not going into connected standby, I used a tool named NirCmd (http://www.nirsoft.net/utils/nircmd.html) which is a small command-line utility.
Create shortcut to turn off monitor
First, create a shortcut (assign a hotkey) with the following command:
nircmd.exe cmdwait 1000 monitor off
Disable connected standby
Next, disable the connected standby feature in windows by regedit:
Activate monitor off
Press the hotkey that you have previously assigned to the shortcut and it will turn off the monitor after 1 second.