Resource Contingency 4,500 4,500 – MW Protection Criteria Credit for LR – – – MW Absolute Value of IFRO 1,014 1,014 – MW/0.1Hz Western 2013 2014 Change Units Starting Frequency 59.971 59.968 -0.003 Hz Max. Allowable Delta 0.261 0.273 0.012 Hz Frequency Resource Contingency 2,626 2,626 – MW Protection Criteria Credit for LR 150 150 – MW Absolute Value of IFRO 949 907 -42 MW/0.1Hz There is no change to the IFRO for the Eastern Interconnection. There is a 42 MW decrease in the Western Interconnection IFRO caused by: The 3 mHz reduction in the Western Interconnection starting frequency; and The 12 mHz increase in the Maximum Allowable Delta Frequency attributable to a decrease in the CBR ratio. Table 15b: Interconnection IFRO Comparison ERCOT 2013 2014 Change Units Starting Frequency 59.964 59.965 0.001 Hz Max. Allowable Delta 0.449 0.391 -0.059 Hz Frequency Resource Contingency – 2,750 2,750 MW Protection Criteria Credit for LR 895 909 14 MW Absolute Value of IFRO 413 471 58 MW/0.1Hz Québec 2013 2014 Change Units – Starting Frequency 59.968 59.968 Hz Max. Allowable Delta 0.947 0.927 -0.020 Hz Frequency Resource Contingency – 1,700 1,700 MW Protection Criteria – – – Credit for LR MW Absolute Value of IFRO 180 183 3 MW/0.1Hz
Resource Contingency Protection Criteria 4,500 4,500 – MW Credit for LR – – – MW Absolute Value of IFRO 1,014 1,014 – MW/0.1Hz Western 2013 2014 Change Units Starting Frequency 59.971 59.968 -0.003 Hz Max. Allowable Delta Frequency 0.261 0.273 0.012 Hz Resource Contingency Protection Criteria 2,626 2,626 – MW Credit for LR 150 150 – MW Absolute Value of IFRO 949 907 -42 MW/0.1Hz There is no change to the IFRO for the Eastern Interconnection. There is a 42 MW decrease in the Western Interconnection IFRO caused by: The 3 mHz reduction in the Western Interconnection starting frequency; and The 12 mHz increase in the Maximum Allowable Delta Frequency attributable to a decrease in the CBR ratio. Table 15b: Interconnection IFRO Comparison ERCOT 2013 2014 Change Units Starting Frequency 59.964 59.965 0.001 Hz Max. Allowable Delta Frequency 0.449 0.391 -0.059 Hz Resource Contingency Protection Criteria 2,750 2,750 – MW Credit for LR 895 909 14 MW Absolute Value of IFRO 413 471 58 MW/0.1Hz Québec 2013 2014 Change Units Starting Frequency 59.968 59.968 – Hz Max. Allowable Delta Frequency 0.947 0.927 -0.020 Hz Resource Contingency Protection Criteria 1,700 1,700 – MW Credit for LR – – – MW Absolute Value of IFRO 180 183 3 MW/0.1Hz
FR_2014_Annual_Analysis_Report_1_12_15_Draft.docx