GE N60 Instruction Manual

Also see for N60: Communications manual Communications guide Instruction manual Instruction manual Instruction manual

Contents

CHAPTER 5: SETTINGS CONTROL ELEMENTSN60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL 5-2235DIRECT INPUT 16 BIT NUMBER: “7”DIRECT INPUT 17 DEVICE ID: “1”DIRECT INPUT 17 BIT NUMBER: “8”2. The remote power is available as the DIRECT INPUT 10 On (the least significant bit) through DIRECT INPUT 16 On (the mostsignificant bit) and DIRECT INPUT 17 On (the sign bit) FlexLogic operands.For the 8-Bit Comparator at UR-21. Remote power from UR-1 IED received on direct inputs is the first argument for the comparator. As such, apply thefollowing settings:8 BIT COMP 1 ARG A0: “DIRECT INPUT 1 On”8 BIT COMP 1 ARG A4: “DIRECT INPUT 5 On”8 BIT COMP 1 ARG A1: “DIRECT INPUT 2 On”8 BIT COMP 1 ARG A5: “DIRECT INPUT 6 On”8 BIT COMP 1 ARG A2: “DIRECT INPUT 3 On”8 BIT COMP 1 ARG A6: “DIRECT INPUT 7 On”8 BIT COMP 1 ARG A3: “DIRECT INPUT 4 On”8 BIT COMP 1 ARG A7: “DIRECT INPUT 8 On”2. Local power from the UR-2 IED available internally is the second argument for the comparator. Thus, apply thefollowing settings:8 BIT COMP 1 ARG B0: “DIGITIZER 1 BIT 0”8 BIT COMP 1 ARG B4: “DIGITIZER 1 BIT 4”8 BIT COMP 1 ARG B1: “DIGITIZER 1 BIT 1”8 BIT COMP 1 ARG B5: “DIGITIZER 1 BIT 5”8 BIT COMP 1 ARG B2: “DIGITIZER 1 BIT 2”8 BIT COMP 1 ARG B6: “DIGITIZER 1 BIT 6”8 BIT COMP 1 ARG B3: “DIGITIZER 1 BIT 3”8 BIT COMP 1 ARG B7: “DIGITIZER 1 BIT 7”3. The two power values are to be added, therefore set 8BIT COMP 1 ADD/SUB to “On”.4. To establish the alarm when the total power in either direction (import or export) is above the threshold, set 8BIT COMP1 INPUT MODE to “Absolute.”5. To establish the alarm when the total power is above the threshold, set the 8BIT COMP 1 DIRECTION to “Over.”6. The digitized power values are scaled to meaningful values. Assuming that MW are to be used for comparison anddisplay, set 8BIT COMP 1 SCALE FACTOR to “11.81”. In this way, the 8BIT COMP 1 A, 8BIT COMP 1 B, and 8BIT COMP 1 Outactual values represent the remote (UR-1), local (UR-2), and total power values in MW.7. To set the alarm when the total power is greater than 2500 MW, set 8BIT COMP 1 PICKUP to “2500.00”.8. To clear the alarm when the total power is less than 2000 MW, the hysteresis setting needs to be at 2500 – 2000 = 500MW. So set 8BIT COMP 1 HYSTERESIS to “500”.9. Using the timing requirements, set 8BIT COMP 1 PICKUP DELAY to “0.050” and 8BIT COMP 1 RESET DELAY to “1.000”. Usethe 8BIT COMP 1 OP FlexLogic operand to set the alarm.10. For monitoring and telemetry purposes, the digitized power values need to be scaled to meaningful values. AssumingMW to be displayed, set 8BIT COMP 1 SCALE FACTOR to “11.81”. In this way, the actual values 8BIT COMP 1 A, 8BIT COMP 1B and 8BIT COMP 1 Out represent the remote (UR-1), local (UR-2), and total power values in MW.For the User-definable displays at UR-2 (optional)To display the remote and total power values the following screen can be set up:DISP 1 TOP LINE: “REMOTE MW: ~”DISP 1 BOTTOM LINE: “TOTAL MW: ~”DISP 1 ITEM 1: “8100” (Modbus register address of 8BIT COMP 1 A)DISP 1 ITEM 2: “8104” (Modbus register address of 8BIT COMP 1 Out)