Nerc test 3 (SOLVED!)
A CPS1 violation is an indication that : A BA's ACE is hindering frequency . A BAS ACE is helping frequency A BA's Frequency Bias is set too high . A BA is not meeting its L10 . correct answers A BA's ACE is hindering frequency . A Balancing Authority has a normal generation capacity of approximately 9400 MW and its most severe single contingency is an 800 MW coal fired steam unit . At 1430 , with an ACE value of 20 MW , a 600 - MW generator trips 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 ? Must return ACE to 20 MW in 15 minutes . Must return ACE to 0 MW in 10 minutes . This does not constitute a reportable disturbance . Must return ACE to 0 MW in 15 minutes . correct answers This does not constitute a reportable disturbance . The DCS criteria applies to a sudden loss of generation that exceeds 80 % of the Balancing Authorities most severe single contingency , or in this case 80 % of 800 MWs which is 640
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