Figure 78: PUR Aided Tripping logic 181
Figure 79: POR Aided Tripping logic 183
Figure 80: Aided Scheme Blocking 1 Tripping logic 183
Figure 81: Aided Scheme Blocking 2 Tripping logic 183
Figure 82: Virtual Current Polarization 186
Figure 83: Directional criteria for residual voltage polarization 187
Figure 84: Aided DEF POR scheme 189
Figure 85: Aided DEF Blocking scheme 190
Figure 86: DEF Directional Signals 190
Figure 87: Aided DEF Send logic 191
Figure 88: Carrier Aided Schemes Receive logic 191
Figure 89: Aided DEF Tripping logic 192
Figure 90: POR Aided Tripping logic 194
Figure 91: Aided Scheme Blocking 1 Tripping logic 194
Figure 92: Aided Scheme Blocking 2 Tripping logic 194
Figure 93: Aided Delta POR scheme 196
Figure 94: Aided Delta Blocking scheme 197
Figure 95: Aided Delta Send logic 198
Figure 96: Carrier Aided Schemes Receive logic 198
Figure 97: Aided Delta Tripping logic 199
Figure 98: POR Aided Tripping logic 201
Figure 99: Aided Scheme Blocking 1 Tripping logic 201
Figure 100: Aided Scheme Blocking 2 Tripping logic 201
Figure 101: Apparent Impedances seen by Distance Protection on a Teed Feeder 204
Figure 102: Problematic Fault Scenarios for PUR Scheme Application to Teed Feeders 206
Figure 103: Any Distance Start 214
Figure 104: Standard basic scheme mode logic 214
Figure 105: Alternative basic timer start scheme mode logic 215
Figure 106: Basic time stepped distance scheme 216
Figure 107: Trip On Close logic 217
Figure 108: Trip On Close based on CNV level detectors 218
Figure 109: SOTF Tripping 219
Figure 110: SOTF Tripping with CNV 219
Figure 111: TOR Tripping logic for appropriate zones 220
Figure 112: TOR Tripping logic with CNV 220
Figure 113: Zone 1 extension scheme 221
Figure 114: Zone 1 extension logic 221
Figure 115: Loss of load accelerated trip scheme 222
Figure 116: Loss of Load Logic 223
Figure 117: Power transfer related to angular difference between two generation sources 228
P446SV Table of Figures
P446SV-TM-EN-1 xxv
To Next Page