This presentation details the design, implementation, and testing of a teleprotection (communication-assisted) ‘proof-of-concept’ testbed using the IEC 61850 Sampled Values (SVs) and Generic Object Oriented Substation Event (GOOSE) messages. A Permissive Overreaching Transfer Scheme (POTT) was implemented using the SV outputs from IEC 61850 Merging Units (MUs) and RTDS GTNET cards (loaded with the SV and GOOSE protocols) as the inputs to Intelligent Electronic Devices (IEDs) configured for distance protection. The required exchange of the SS-SS permissive trip signal between the IEDs was published using IEC 61850 GOOSE messages. Performance, interoperability, and interchangeability tests of the SV component of the testbed was carried out using hardware-in-the-loop simulations with the Real-Time Digital Simulator (RTDS) for various fault types, fault locations, and fault resistances. Similarly, a comparison of the results obtained for permissive trip signal publishing using GOOSE messages with that obtained using proprietary protocols was carried out.
Charles Adewole – CPUT, University of Manitoba