Application of synchronous phasor measurement technology to bay levels of substations;

The increasing application of station bus and process bus makes a strict requirement for bay level intelligent electrical devices (IEDs) with multi-network interfaces,high reliability and real-time performance.

In this paper a mapping model that maps various logical interfaces in substation automation system to independent physical interfaces is constructed according to IEC 61850 standard and a distributed information-processing mode based hardware framework for protection and monitoring devices of the bay level is proposed.