NERC book quiz| 157 questions| WITH COMPLETE SOLUTIONS

NERC book quiz| 157 questions| WITH COMPLETE SOLUTIONS You are an external BA with a frequency bais of 20 MW/.1 Hz that sees a frequency of 60.02 due to a large loss of load in the contingent BA. If your generator governor control systems responded to the frequency deviation approximately how much of a generation change would you BA experience? - Answer --4MW Net actual interchange minus Net scheduled interchange is what? - Answer -Inadvertent interchange Suppose your interconnection operators at 59.97 Hz from one minute after midnight to noon and operate at 60.05 Hz from 12:01 to midnight. What should you do if a time error correction was implemented just after midnight to correct for the timer error accumulated during this 24 hour period? - Answer -Change frequency schedule to 59.98 Hz If BA ABC's RT signal for power flow over ABC's midway tie-line with BA XYZ is significantly in error, the ABC system operator shall - Answer -Adjust the control setting (e.g. substitute a value for the tie line power flow in the EMS) to compensate for the equipment error until repairs can be made The normal and recommended mode of AGC is what? - Answer -Tie line frequency bias A 100 MW generator at 50 MW output has a 5% governor droop response will respond to how much of a -.15Hz frequency deviation (actual frequency 59.85 Hz) - Answer -+5 MW Which of the following complies with the control performance standard - Answer -CPS1=135% A system disturbance has caused your BA to lose tie line RTUs with a neighboring BA and all frequency meters which telemetered data into your EMS. How would you operate your GC system for this scenario? - Answer -Place all generating units on manual control and try as best you can to match generation with load Each BA shall perform control error checks using tie-line MWh meters to determine the accuracy of its control equipment. How often do NERC reliability stands require each BA to perform these control error checks? - Answer -Every hour Upon telemetry failure of a generators output, which of the following would you expect to change - Answer -Actual load (as displayed in the Control Room) There is an inadvertent accumulation of 240 MWh over generation that should be used to schedule payback with neighboring control area. If 50% is on peak, which schedule will work? - Answer -20 MW delivered hour ending 0100 through HE 1300 Monday (CST) Each BA shall operate such that its clock minute average of reporting ACE does not exceed its clock minute BA ACE limit (BAAL) for more than how many consecutive minutes? - Answer -30 minutes