Reliability Enhanced Communication Guidance for Electric Utilities Based on Regulatory Standard

Legacy electric communication network was isolated from public external network, so it was considered to be safe. However attacks, such as Stuxnet, have gradually been discovered and detected, this network is being suspected of security. So each country establishes security guideline of electric systems and regulates legal regulations of these security guideline. To improve reliability of communication between electric utilities, this paper analyzes regulatory communication guidelines, and then suggests improved guidance from legacy guidelines.