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SEL-411L Relay Date Code 20151029
List of Figures
Figure 3.81 LOP Logic Process Overview......................................................................................... P.3.138
Figure 3.82 LOP Logic....................................................................................................................... P.3.140
Figure 3.83 Level 2 Watchdog Monitor Diagram............................................................................... P.3.141
Figure 3.84 32Q and 32QG Enable Logic Diagram........................................................................... P.3.146
Figure 3.85 32V and 32I Enable Logic Diagram ............................................................................... P.3.146
Figure 3.86 Best Choice Ground Directional Logic........................................................................... P.3.148
Figure 3.87 Negative-Sequence Voltage-Polarized Directional Element Logic................................. P.3.149
Figure 3.88 Zero-Sequence Voltage-Polarized Directional Element Logic ....................................... P.3.149
Figure 3.89 Zero-Sequence Current-Polarized Directional Element Logic ....................................... P.3.150
Figure 3.90 Ground Directional Element Output Logic Diagram...................................................... P.3.150
Figure 3.91 32P, Phase Directional Element Logic Diagram............................................................. P.3.153
Figure 3.92 32Q, Negative-Sequence Directional Element Logic Diagram ...................................... P.3.153
Figure 3.93 CVT Transient Detection Logic...................................................................................... P.3.155
Figure 3.94 Load-Encroachment Logic Diagram............................................................................... P.3.156
Figure 3.95 Load-Encroachment Characteristics ............................................................................... P.3.157
Figure 3.96 OOS Characteristics........................................................................................................ P.3.158
Figure 3.97 OOS Positive-Sequence Measurements.......................................................................... P.3.161
Figure 3.98 OOS Override Logic ....................................................................................................... P.3.161
Figure 3.99 OOS Logic Diagram........................................................................................................ P.3.162
Figure 3.100 Open-Pole OSB Unblock Logic...................................................................................... P.3.163
Figure 3.101 Zero-Setting OOS Blocking Function............................................................................. P.3.163
Figure 3.102 Swing Center Voltage Slope Detection Logic................................................................. P.3.165
Figure 3.103 Starter Zone Characteristic.............................................................................................. P.3.166
Figure 3.104 Swing Signature Detector Logic ..................................................................................... P.3.166
Figure 3.105 Swing Signature Detector Logic ..................................................................................... P.3.168
Figure 3.106 Reset Conditions Logic................................................................................................... P.3.169
Figure 3.107 Type of Power Swings Detected by the DOSB Function................................................ P.3.169
Figure 3.108 Dependable Power-Swing Block Detector Logic (EOOS = Y1) .................................... P.3.170
Figure 3.109 Dependable Power-Swing Block Detector Logic (EOOS = Y) ...................................... P.3.171
Figure 3.110 Relay Word Bit DOSB Is the OR Combination of DOSBY1 and DOSBY.................... P.3.171
Figure 3.111 Logic Diagram of the Three-Phase Fault Detector ......................................................... P.3.172
Figure 3.112 Pole Open OOS Blocking Logic..................................................................................... P.3.172
Figure 3.113 I0/IA2 Angle Supervision During Pole-Open Situation ................................................. P.3.173
Figure 3.114 Blocking of the MAG Signal by the OSBA Fault Detection .......................................... P.3.173
Figure 3.115 Unblocking of the MAB Signal by the 67QUB Element................................................ P.3.173
Figure 3.116 Directional Element Signals 67QUBF and 67QUBR ..................................................... P.3.174
Figure 3.117 OST Scheme Logic Resistive and Reactive Blinders...................................................... P.3.175
Figure 3.118 Logic that Determines Positive-Sequence Impedance Trajectory (EOOS = Y1) ........... P.3.176
Figure 3.119 Out-of-Step Trip Logic (EOOS = Y1) ............................................................................ P.3.177
Figure 3.120 Out-of-Step Blocking for Zone 1–Zone 5....................................................................... P.3.178
Figure 3.121 Zone 1 Mho Ground-Distance Element Logic Diagram................................................. P.3.180
Figure 3.122 Zone 2 Mho Ground-Distance Element Logic Diagram................................................. P.3.181
Figure 3.123 Zones 3, 4, and 5 Mho Ground-Distance Element Logic Diagram................................. P.3.182
Figure 3.124 Zone 1 Quadrilateral Ground-Distance Element Logic Diagram ................................... P.3.185
Figure 3.125 Zone 2 Quadrilateral Distance Element Logic Diagram................................................. P.3.185
Figure 3.126 Zones 3, 4, and 5 Quadrilateral Ground-Distance Element Logic.................................. P.3.186
Figure 3.127 Zone 1 Mho Phase Distance Element Logic Diagram.................................................... P.3.188
Figure 3.128 Zone 2 Mho Phase Distance Element Logic Diagram.................................................... P.3.189
Figure 3.129 Zones 3, 4, and 5 Mho Phase Distance Element Logic Diagram.................................... P.3.190
Figure 3.130 Quadrilateral Phase Distance Element Characteristic (TANGP = 0).............................. P.3.192
Figure 3.131 Quadrilateral Phase Distance Element Characteristic (TANGP = –10 degrees)............. P.3.193
Figure 3.132 Network to Determine Homogeneity.............................................................................. P.3.193
Figure 3.133 Tilt in Apparent Fault Impedance Resulting From Nonhomogeneity............................. P.3.194
Figure 3.134 Zone 1 AB Loop Conventional Quadrilateral Phase-Distance Element Logic............... P.3.196
Figure 3.135 Zone 2 AB Loop Conventional Quadrilateral Phase Distance Element Logic ............... P.3.196
Figure 3.136 Zone 3, 4, and 5 AB Loop Conventional Quadrilateral Phase Distance
Element Logic.............................................................................................................. P.3.197
Figure 3.137 Zone Timers .................................................................................................................... P.3.199
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