NERC SOS quiz questions | 2023/24 WITH COMPLETE SOLUTION

NERC SOS quiz questions | 2023/24 WITH COMPLETE SOLUTION If a Balancing Authority does not comply with the Control Performance Standard, the Balancing Authority is not permitted to provide which of the following for any other Balancing Authority entities? - Regulation of other services related to control performance 1. It is the obligation of each Balancing Authority to fulfill its commitment to the Interconnection and not ________ the other balancing Authorities in the Interconnection - Burden A Balancing Authority is performing Overlap Regulation Service for another Balancing Authority. Which of the following statements applies to the Balancing Authority providing this service? - The Balancing Authority's Frequency Bias Setting shall be modified to reflect the combined Frequency Bias Setting of both Balancing Areas. Balancing Authority A is currently reading a system frequency of 59.95 Hz. Its Net Actual Interchange is +100 MW and its Net Scheduled Interchange is +200 MW. If Balancing Authority A's frequency bias setting is 100 MW/0.1 Hz, Balancing Authority A's AGC is pulsing its generators to do what? - Increase MW output Which of the following is a Real-time measurement of a Balancing Authority's control performance - BAAL Each Balancing Authority shall monitor which of the following against two standards: CPS1 and BAAL? - Control performance In the calculating of CPS1, which of the below conditions would contribute to ta favorable score? - Negative ACE when frequency is high, positive ACE when frequency is low. If the frequency bias setting is a higher value than the frequency response of a Balancing Authority and a frequency decline is caused by a sudden loss of generation is an external balancing area, what will be the result? - A- The ACE will be a negative value and AGC will increase generation Which statement best describes the CPS1 requirement? - The Responsible Entity shall operate such that its CPS1 is greater than or equal to 100% for the preceding 12 month period. To be in compliance with the BAL-001 requirements, a Balancing Authority must have which of the following? - CPS1 greater than or equal to 100% and ACE does not exceed the BAAL more than 30 consecutive minutes Actual System Frequency (FA) is 60.03 Hz, a Balancing Authority is under-generating slightly to prepare for an upcoming interchange transaction. What is the Balancing Authority doing? - The BA is helping the Interconnection Frequency. You are a Balancing Authority Operator. A neighboring Balancing Authority in the Interconnection suddenly had a 500 MW generator to trip off line by generator differential. What part of the ACE equation, ACE = (NIA-NIS) - 10B (FA-FS) - IME, allows you and other Balancing Authorities in the Interconnection to contribute to the stabilization of the Interconnection frequency error? - 10B (FA-FS) In your Interconnection, a generator tripped that was large enough to reduce the frequency from 60.000 Hz to 59.940 Hz. Your Balancing Authority's Frequency Bias is 200 MW/0.1 Hz. How many MW would your system initially contribute to frequency support? - 120 MW Which of the following would be a use of the IME portion of the ACE equation? - Represent flow of a tie line with an out of service meter. What happens to the Balancing Authority ACE Limit (BAAL) when frequency moves farther away from scheduled frequency? - The limit gets more restrictive. How is the Frequency Response Obligation (FRO) of a Frequency Response Sharing Group determined? - By adding the individual FRO's of each member. A Balancing Authority has an ACE reading of -100MWs and frequency is 60.12 Hz. Is the BA exceeding the BAAL? - No A Balancing Authority that is a member of a Generation Reserve Sharing Group is the Responsible Entity only in periods during which the Balancing Authority is not in active status under the applicable agreement or the governing rules for the Generation Reserve Sharing Group. - False The minimum compliance for NERC DCS is - 100% for all reportable disturbances. A generator tripped in your Interconnection that was large enough to cause frequency to drop to 59.950 Hz. Your Balancing Authority's Frequency Bias is 120 MW/0.1 Hz. How many MWs would your system initially contribute to frequency support? - 60 MWs A Balancing Authority has a normal load of around 8500 MW. Its most severe single contingency is a 700-MW coal-fired steam unit. At 0810 the ACE value was at -55 MW when a 600-MW generator in the Balancing Authority's northern area tripped off line as the result of a generator differential. This resulted in a large negative ACE for the Balancing Authority. What value must the ACE return to and in what time frame to avoid a DCS violation? - -55 MW ACE in 15 minutes How is the Frequency Response Measure (FRM) of a Balancing Authority determined? - It is the median of the BA's frequency response for the frequency deviation events identified by NERC for the previous year. The Contingency Reserve Restoration period is ________. - ninety minutes When does the Contingency Reserve Restoration Period begin? - At the end of the Disturbance Recovery Period. A Balancing Authority has a normal load of around 8500 MW. Its most severe single contingency is a 700-MW coal-fired steam unit. At 0810 the ACE value was at -55 MW when a 600-MW generator in the Balancing Authority's northern area tripped off line as the result of a generator differential. This resulted in a large negative ACE for the Balancing Authority. What value must the ACE return to and in what time frame to avoid a DCS violation? - -55 MW ACE in 15 minutes A Balancing Authority's largest single contingency is a unit rated at 1,000 MW. Which of the following disturbances would constitute a reportable disturbance for DCS evaluation