Hello Mohammad,

option K74 is generating 230V AC out of you line supply voltage. For this purpose you have transformer T10 which have to be set depending on your line voltage.
You can find information about option K74 in chapter 4.10.30 of the G150 operating instruction manual.
https://support.industry.siemens.com/cs/ww/en/view/109783265

You can find examples of circuit diagrams of K74 on the following product note
https://support.industry.siemens.com/cs/ww/en/view/75735742

So, the easiest way would be to use option K74 and set up the transformer according to your line supply voltage to get the 230V AC auxiliary supply which are necessary internally of the SINAMICS G150.

Otherwise you have to use an additional transformer to generate 230V AC out of you 110V AC supply, but this is not available as an option.