Sel 421 - Page 28

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SEL-421 Relay Date Code 20090715
List of Figures
Figure 1.45 500 kV Power System for Circuit Breaker Failure Scheme 2........................................ A.1.159
Figure 1.46 Fault Current Distribution Through Faulted Line at Station S....................................... A.1.160
Figure 1.47 Timing Diagram for Setting BFPU1—Scheme 2........................................................... A.1.161
Figure 1.48 Timing Sequences for Circuit Breaker Failure Protection Scheme 2............................. A.1.162
Figure 1.49 Circuit Breaker BK1 DC Connections (Two Trip Coils) ............................................... A.1.165
Figure 2.1 SEL-421 Intelligent Circuit Breaker Monitor .................................................................... A.2.2
Figure 2.2 Circuit Breaker Maintenance Curve (Manufacturer’s Data) .............................................. A.2.4
Figure 2.3 Circuit Breaker Contact Wear Curve With SEL-421 Settings ........................................... A.2.5
Figure 2.4 Trip Bus Sensing With Relay Input IN106 ........................................................................ A.2.8
Figure 2.5 Mechanical Operating Time for Circuit Breaker 1 A-Phase ............................................ A.2.10
Figure 2.6 Electrical Operating Time for Circuit Breaker 1 A-Phase ............................................... A.2.11
Figure 2.7 Timing Illustration for Pole Scatter at Trip ...................................................................... A.2.13
Figure 2.8 Pole Discrepancy Measurement ....................................................................................... A.2.15
Figure 2.9 Breaker Report ................................................................................................................. A.2.18
Figure 2.10 Breaker History Report .................................................................................................... A.2.19
Figure 2.11 Circuit Breaker Preload Data ........................................................................................... A.2.19
Figure 2.12 Typical Station DC Battery System.................................................................................. A.2.21
Figure 2.13 Ground Detection Factor Areas........................................................................................ A.2.24
Figure 2.14 Battery Metering: Terminal.............................................................................................. A.2.25
Figure 2.15 Complex Power (P/Q) Plane ............................................................................................ A.2.29
Figure 2.16 Typical Current Measuring Accuracy .............................................................................. A.2.31
Figure 2.17 Thermal Demand Metering .............................................................................................. A.2.34
Figure 2.18 Rolling Demand Metering ............................................................................................... A.2.35
Figure 2.19 Demand Current Logic Outputs ....................................................................................... A.2.36
Figure 3.1 SEL-421 Input Processing.................................................................................................. A.3.3
Figure 3.2 Data Capture/Event Report Times...................................................................................... A.3.6
Figure 3.3 Sample SEL-421 Oscillogram............................................................................................ A.3.8
Figure 3.4 Sample COMTRADE .HDR Header File .......................................................................... A.3.9
Figure 3.5 COMTRADE .CFG Configuration File Data................................................................... A.3.10
Figure 3.6 Analog Section of the Event Report................................................................................. A.3.15
Figure 3.7 Event Report Current Column Data and RMS Current Magnitude ................................. A.3.18
Figure 3.8 Event Report Current Column Data and RMS Current Angle......................................... A.3.19
Figure 3.9 Digital Section of the Event Report ................................................................................. A.3.21
Figure 3.10 Sample Digital Portion of the Event Report..................................................................... A.3.22
Figure 3.11 Summary Section of the Event Report............................................................................. A.3.23
Figure 3.12 Settings Section of the Event Report................................................................................ A.3.24
Figure 3.13 Sample Compressed ASCII Event Report ....................................................................... A.3.25
Figure 3.14 Sample Event Summary Report ....................................................................................... A.3.28
Figure 3.15 Sample Compressed ASCII Summary ............................................................................. A.3.31
Figure 3.16 Sample Event History....................................................................................................... A.3.31
Figure 3.17 Sample Compressed ASCII History Report..................................................................... A.3.33
Figure 3.18 Sample SER Report.......................................................................................................... A.3.34
Figure 3.19 Sample Compressed ASCII SER Report ......................................................................... A.3.36
Figure 4.1 High-Accuracy Timekeeping Connections ........................................................................ A.4.2
Figure 4.2 Setting PMV64 with the Expression Builder Dialog Box.................................................. A.4.4
Figure 4.3 Selecting Trip Logic and ER Trigger Settings in
ACSELERATOR...................................... A.4.5
Figure 4.4 Uploading Group Settings to the SEL-421 ........................................................................ A.4.5
Figure 4.5 230 kV Transmission Line System .................................................................................... A.4.6
Figure 4.6 500 kV Three Bus Power System....................................................................................... A.4.7
Figure 4.7 Power Flow Solution .......................................................................................................... A.4.9
Figure 5.1 230 kV Tapped Overhead Transmission Line.................................................................... A.5.2
Figure 5.2 Automatic Restoration Timing Diagram............................................................................ A.5.3
Figure 5.3 SEL-421 Inputs .................................................................................................................. A.5.5
Figure 5.4 Protection Free-Form SEL
OGIC Control Equations ......................................................... A.5.11
Figure 5.5 Protection Free-Form SEL
OGIC Control Equations ......................................................... A.5.13
Figure 5.6 Ladder Logic Representation, Protection Free-Form SEL
OGIC Control Equations......... A.5.15
Figure 6.1 SEL Communications Processor Star Integration Network............................................... A.6.1
Figure 6.2 Multitiered SEL Communications Processor Architecture................................................ A.6.2
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