Deploying Digital Substations: Experience with a Digital Substation Pilot in North America
IEC 61850 process bus and availability of optical instrument transformers have led the way to real world deployment of digital substations. This paper discusses PECO’s perspective in deploying a digital substation. The pilot project is installed on a 220kV line connected to the ring bus managed by PECO, Philadelphia. The main aim of the project is to evaluate and learn the state of the art digital substation technology and compare the various aspects to a conventional substation. The project involves primary optical sensors, merging units, protection IEDs supporting 9‐2LE, IEEE 1588 clocks, substation servers and substation hardened Ethernet switches.