PJM EXAM QUESTIONS WITH COMPLETE SOLUTIONS

PJM EXAM QUESTIONS WITH COMPLETE SOLUTIONSDuring reactive testing, which entity must give approval to change an approved voltage schedule? PJM, TOP, MOC, GO - ANSWER-TO Generation available within 10 minutes for offline reserve units: Quick-start (hydro), manual, operating, supplemental - ANSWER-Quick-start (hydro) Minimum MVARs for an individual generator that is required to do reactive testing? - ANSWER-20 MVA Minimum MVARs for an aggregate of generators that is required to do reactive testing? - ANSWER-75 MVA Power transformer is connected to the generator with which line? - ANSWER-Primary In a balancing authority region, If a site trips offline, what increases? - ANSWER-positive time error How many hours before NERCs 24hour deadline ends must you report disturbance to PJM? - ANSWER-6 hrs How does PJM avoid dealing with economic issues during transmission related constraints - ANSWERcost (offer) capping generation If a generator doesn't have ICCP, what does it have to be linked through so data is available? - ANSWERSCADA (through EMS) Which balancing control mode is used by PJM under normal operations? - ANSWER-Tie line bias Page 2 of 14 the purpose for balancing area to have AR (area regulator) is to correct for: - ANSWER-small deviations in load what esuite tool is used to maintain individual generator regulation data that is submitted by PJM members? - ANSWER-eMarket cold weather alert is for what temp? - ANSWER-10F what are the three types of transmission constraint that PJM monitors? - ANSWER-Reactive, Stability, Thermal (transfer limits) which would be the last step PJM would take in attempting to relieve a transmission constraint? - ANSWER-shed load Load in PJM is generally served using ___ transmission service. - ANSWER-Network Integration If you were going to import, export, or wheel power through PJM, you would use ____ transmission services? - ANSWER-point-to-point? what is an example of a quick start reserve? - ANSWER-Hydroelectric In order to lower system voltage, ___ must decrease to decrease _____ - ANSWER-MW, MVAR what is PJM's reg requirement during a system restoration? - ANSWER-2% of current load During restoration conditions, what amount of load must be shed in order to increase frequency by 1.0Hz - ANSWER-6-10% During restoration conditions, what percentage of load must be shed in order to alter frequency by 1% Hz? - ANSWER-1-2% of load to alter frequency by 1% Page 3 of 14 What is the approx. MVAR per mile of 500kV transmission that should be anticipated? - ANSWER-1.70 MVAR per mile Frequency during restoration process should be: - ANSWER-59.75-61Hz A system will blackout at what frequency? - ANSWER-57.5 Hz or lower What is the criteria for PJM to issue a Min Gen Alert? - ANSWER-Within 2500 MW of normal eco min limits Based on a generator capability curve, in order to maximize the MVAR output of the generator, it may be necessary to: - ANSWER-decrease MW output It would be an acceptable action for PJM to request of a generator during periods of heavy flows (load) and low voltages to lower real-time power output to ... - ANSWER-increase reactive power lowering the generator's current and increasing the voltage will also increase: - ANSWER-MVARs (reactive power)