This paper presents a framework of intelligent operation center (IOC)for Hengqin New Area smart grid demonstration project in terms of IT topology and system functionalities. The platform is developed based on Service Oriented Architechture(SOA) and the newly released enterprise standards of China Southern Grid (CSG).The system information covers transmission system, substation and distribution system on Hengqin Island by monitoring the status of various devices with cutting edge technologies as well as coordinating and merging different systems in a new platform which is expected to enable a more intelligent way for future operation and maintenance information exchange in between the systems currently used. In addition, it will not only enhance the system operational efficiency but also create a novel management experience for further promotion of IOC in the continuously deregulated market environment within service areas of CSG.