Phase distance relay (21) directional – toward the Transmission system– installed on the high-side of the Elements that The impedance element shall be set less than the calculated GSU transformer connect the GSU 1.0 per unit of the line nominal impedance derived from 130% of the maximum aggregate 17 transformer(s) to the voltage nameplate MVA output at rated power factor (including the Transmission system Mvar output of any static or dynamic reactive power devices) that are used If the relay is exclusively to export installed on the energy directly from generator-side of the a BES generating unit GSU transformer or generating plant. use Option 10 Elements may also supply generating plant loads. to asynchronous generators only (including The same application continues on the next page with a different relay type based installations)
Elements that connect the GSU transformer(s) to the Transmission system that are used exclusively to export energy directly from a BES generating unit or generating plant. Elements may also supply generating plant loads. to asynchronous generators only (including installations) Phase distance relay (21) – directional toward the Transmission system– installed on the high-side of the GSU transformer If the relay is installed on the generator-side of the GSU transformer use Option 10 17 1.0 per unit of the line nominal voltage The impedance element shall be set less than the calculated impedance derived from 130% of the maximum aggregate nameplate MVA output at rated power factor (including the Mvar output of any static or dynamic reactive power devices) The same application continues on the next page with a different relay type based
PRC_025_2_Generator_Relay_Loadability_Draft_2017_05_23.docx