This paper proposes a wide area equipment protection (WAEP) system, based on substation panoramic information, realizes wide area relay protection function. Firstly, the cancel of substation station level and bay level, and deploy of comprehensive intelligent equipment in substation process level, can realize substation local protection and panoramic information collection which provides sufficient information for WAEP; Secondly, based on Packet Transport Network (PTN), the system will realize pseudo wire communication to ensure the reliability and real-time of information transfer; Thirdly, coordinated relay mechanism of substation local protection and WAEP, the system can realize equipment protection system. The experiment proved that this method achieves wide area relay protection.