Case Study: Revised Engineering and Testing Practices Resulting from Migration to IEC 61850

Abstract—Replacing hardwired connections with digital communications over Ethernet requires new engineering and testing practices. PPL Electric Utilities Corporation (PPL) recently designed, installed, and tested a new high-voltage substation using next-generation relay and control equipment. This next-generation substation (NGS) is based on networked Ethernet intelligent electronic devices (IEDs) communicating via IEC 61850.