With AdLogger you can check if there's anyone committing click fraud. It allows you to see the amount of clicks they've made and shows you the clicker's IP. If you get banned or risk being banned, you get reinstated by contacting Google with information supporting your end of the dispute. Having AdLogger or something similar will help you dramatically. Let them know you've never violated their TOS by clicking your own ads or anything of the sort. If you've reported suspicious behaviour with the ads you're running on your site(click fraud or something similar), let them know you did this. They have records, too. Make sure you tell them, not ask, to check their records to make sure you are not at fault. If you are though, no sense trying. Like I said, they have records.
AdLogger » Open-Source Click Fraud Prevention and Click Monitoring