PJM Exam Questions and Answers

PJM Exam Questions and Answers What is the threshold for having a satellite phone? - Correct Answer ️️ -500 MW How often is reactive testing completed? - Correct Answer ️️ -5 years Which of the following would NOT be a cause for a sudden deviation in the balancing area ACE? 1) Incorrect interchange number 2) Loss of a tie-line RTU 3) Loss of internal load 4) Loss of adjacent control area generation - Correct Answer ️️ -Loss of adjacent control area generation PJM should be made aware of any fuel shortage that a generator may experience. This information assists in analyzing the resources and reliably operating the system. A heightened awareness is expected during: - Correct Answer ️️ -Extreme hot or cold conditions If a fossil steam unit has less than 32 hours of fuel at max capacity, it should be bid at: - Correct Answer ️️ -Maximum Emergency A tie line with MW flowing into the PJM control area trips. The system operator will see which of the following occur? 1) Ace will decrease, frequency will decrease 2) ACE will increase, frequency will increase 3) ACE will decrease, frequency will remain the same 4) ACE and frequency will remain the same - Correct Answer ️️ -ACE and frequency will remain the same What is PJM's regulation requirement during a system restoration? - Correct Answer ️️ -2% of current load What is the maximum time limit for outages that occur during the PJM Peak Period Maintenance season? - Correct Answer ️️ -9 Days Maximum emergency generation is declared by PJM when which of the following occurs? - Correct Answer ️️ -20 MVA When a data link is down, how often must PJM be updated? - Correct Answer ️️ -30 minutes or agreed upon change What must be done prior to removing a self scheduled unit from service? - Correct Answer ️️ -Give PJM option to take over the unit for the market What is the purpose of an exciter? - Correct Answer ️️ -Control voltage by controlling VARs The mechanical device on a transformer that controls deviation in voltage is called? 1) Primary winding 2) AVR 3) Load tap changer - Correct Answer ️️ -LTC: Load Tap Changer Operating reserve must equal the sum of: - Correct Answer ️️ -1) Spinning 2) Quick Start 3) Secondary In order to lower system voltage: - Correct Answer ️️ -MW must decrease to decrease MVAR PJM performs a Reliability Assessment Commitment starting with the results of the DA market. What philosophy does PJM use when performing this RAC? - Correct Answer ️️ -Minimize startups and no loads Emergency reducible generation is defined as the difference between: - Correct Answer ️️ -Normal minimum generation and emergency minimum generation Increasing frequency will increase what type of reactance? - Correct Answer ️️ - Inductance Increasing frequency has no effect on: - Correct Answer ️️ -Resistance What is the emergency threshold for reporting a steam unit as fuel limited? - Correct Answer ️️ -72 Hours What is an example of a quick start reserve? - Correct Answer ️️ -Hydroelectric What 2 components make up contingency reserve? - Correct Answer ️️ -Spinning and quick start Partial system blackouts are characterized by which of the following? 1) Most common type 2) May require coordinating multiple islands 3) Likely to result in transmission overloads or other issues 4) Affects a very large geographic area, and many customers 5) Most commonly caused by human or switching errors - Correct Answer ️️ -Likely to result in transmission overloads or other issues Which of the following is not considered when clearing the DA market? 1) Generation offers 2) PJM load forecast 3) Increment offers 4) Bilateral transaction schedules - Correct Answer ️️ -PJM Load Forecast The two control signals sent by the PJM EMS are? - Correct Answer ️️ -Regulation and Dispatch Rate What is the minimum notification time to adjust MW for a self scheduled unit? - Correct Answer ️️ -20 minutes before change A generator is at 500 MW and frequency of 60.25 Hz. How much should the load change to get frequency at 59.75 Hz? - Correct Answer ️️ -15-25 MW During system restoration, what amount of load must be shed in order to attain an increase in frequency of 1 Hz? - Correct Answer ️️ -6-10 % Which of the following are requirements for Black Start Generation? 1) Must be tested every 3 years 2) Must be able to run for 12 hours, or as defi