Suppose i am running a campaign in USA. I Google my keywords to check my ads position or xyz factor. And i am doing same thing daily just to check ads visibilty whether it is showing or not.
Google will find that frequently queries are coming from same domain but there no click, Will Google put my IP in black list/banned my IP? Or do not show my ads more frquently on my system.
If you're checking a couple of times daily, you wont be put on a blacklist.
However, every time you search for your ad and don't click, you're (marginally) reducing your CTR and hence, actually contributing to raising your costs.
When checking your ad, you should always use the ad preview tool here: