With the rapid development of big data technology

the existing FNET/GridEye software system has been unable to adapt to future developments. As a result

a new distributed software architecture is designed and implemented based on phasor-oriented open-source and real-time big data projects: OpenPDC and OpenHistorian. The system is composed of three parts: the front cluster

the rear cluster and the system coordinator component

which has the characteristics of high system scalability and high reliability. Each OpenPDC server in the front cluster is responsible for the access to a certain number of phasor measurement unit(PMU)devices

and in which different power grid event triggers are run. When the power grid event is detected by the triggers

the system coordinator component will be notified by the multicast technology from the trigger

and the window data will be extracted from OpenHistorian by the system coordinator component

then the corresponding analysis application can be loaded to run in the application server. According to the throughput test results

stable operation for more than two years and increasing PMU devices and applications proves that the system design is advanced.