ERCOT is working from primary control center. Log Log all actions. 3.0 Monitor and Manage System Security 3.1 Frequency Control Operating Procedure Procedure Purpose: To control frequency within defined limits. Protocol Reference 6.5.7.6.1 6.5.7.6.2.2(7) 6.5.9.1(1)(b) Guide Reference 2.2.4 2.2.8 BAL-001-2 IRO-001-4 NUC-001-3 TOP-001-4 R2 R1 R4, R4.1, R2 NERC Standard R4.2, R9, R9.2, R9.2.1, R9.4, R9.4.2 Version: 1 Revision: 29 Effective Date: October 1, 2018 Step Action Maintain System Frequency Frequency should be maintained within +/- 0.03 Hz of schedule Attempt to maintain CPS1 scores over 100 Objective Operate within the BAAL Frequency Bias set to 759MW/0.1Hz IF: CPS1 less Performance drops below 100 for over three consecutive hours; than 100 THEN: LOG the event and the possible cause of the poor performance. Corrective action shall be taken whenever the clock-minute average ACE is outside its clock-minute average Balancing Authority ACE Limit BAAL (BAAL). This is to ensure that the Balancing Authority ACE does not remain outside the BAAL for more than 30 consecutive clock-minutes. NEVER (unless directed by EMMS Production or Support Engineer): Caution Change other tuning parameters (including QSE ramp rates, dead bands, thresholds, gains, time constraints) Base Point REVIEW REFERENCE DISPLAY: Deviation
ERCOT is working from primary control center. Log Log all actions. 3.0 Monitor and Manage System Security 3.1 Frequency Control Operating Procedure Procedure Purpose: To control frequency within defined limits. Protocol Reference 6.5.7.6.1 6.5.7.6.2.2(7) 6.5.9.1(1)(b) Guide Reference 2.2.4 2.2.8 NERC Standard BAL-001-2 R2 IRO-001-4 R1 NUC-001-3 R4, R4.1, R4.2, R9, R9.2, R9.2.1, R9.4, R9.4.2 TOP-001-4 R2 Version: 1 Revision: 29 Effective Date: October 1, 2018 Step Action Maintain System Frequency Objective Frequency should be maintained within +/- 0.03 Hz of schedule Attempt to maintain CPS1 scores over 100 Operate within the BAAL Frequency Bias set to 759MW/0.1Hz CPS1 less than 100 IF: Performance drops below 100 for over three consecutive hours; THEN: LOG the event and the possible cause of the poor performance. BAAL Corrective action shall be taken whenever the clock-minute average ACE is outside its clock-minute average Balancing Authority ACE Limit (BAAL). This is to ensure that the Balancing Authority ACE does not remain outside the BAAL for more than 30 consecutive clock-minutes. Caution NEVER (unless directed by EMMS Production or Support Engineer): Change other tuning parameters (including QSE ramp rates, dead bands, thresholds, gains, time constraints) Base Point Deviation REVIEW REFERENCE DISPLAY:
Real_Time_Desk_Operating_Procedure.docx