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Lr6n1i;-Aft <br />ENERGY • WATER +COMMUNITY SERVICES <br />If the ERCOT requirement of 25 percent is not met by the direct connect customers after this <br />Level I procedure, then the Level II procedure is implemented. <br />Level II Participation <br />If the ERCOT requirement is not met by the Level I procedure, then LCRA will assign additional <br />load to be included into the UFLS by the participating direct connect customers. The assignment <br />will be based on an equal distribution of the deficient load needed to meet the ERCOT <br />requirement among the non - exempt direct connect customers. <br />Review Process <br />1. Ensure the UFLS program meets the ERCOT minimum requirement of 25 percent load is <br />UFLS- equipped (step 1 at 5 percent or greater, step 2 at 10 percent or greater, and step at <br />10 percent or greater). <br />2. Ensure all non - exempt direct connect customers meet their individual minimum UFLS <br />contributions as stated in 1 above. <br />3. Determine if currently exempt direct connect customers will qualify to participate in the <br />program for the next survey. <br />4. Determine if additional load is necessary on UFLS to: a) meet 1, 2, or 3 above and / or, b) to <br />meet the LCRA 26.5 percent target. <br />5. If necessary, request additional UFLS load from least contributing direct connect customer in <br />preparation for the next survey. <br />6. Annual LCRA TSC internal UFLS survey is every November. This survey will ensure UFLS <br />participation is correct, and if necessary will take immediate corrective actions. <br />7. LCRA will review planned power transformer outages based on information maintained by the <br />LCRA Operations Department (SOCC). Delivery System Planning will analyze the SOCC <br />information for any UFLS protected circuits that will be switched, and will work with the <br />corresponding customer to make sure adequate UFLS relayed load is available for the <br />survey. <br />UFLS Event Assessment Documentation and Reporting <br />Following system events resulting in system frequency excursions below the initializing set points <br />of the UFLS program, LCRA TSC will analyze the UFLS event according to the steps below and <br />will provide documentation of the analysis to ERCOT, and to NERC upon request. <br />• Describe the event including initiating conditions <br />• Review relay set points and tripping times <br />• Simulate the event (determine which step of UFLS operated) <br />• Summarize the findings <br />1. LCRA UFLS participating customers will furnish LCRA with UFLS event data. <br />a. Feeder breaker tripped; <br />b. Load on feeder at time of UFLS event; <br />c. UFLS relay operation data (if relay is non -LCRA TSC). <br />2. LCRA will compile data from UFLS participants after an under - frequency event. LCRA <br />data compilation process will include the assessment of its UFLS program (i.e., protective <br />Revision 1 — Describe LCRA TSC UFLS Program Targets, Internal Survey, and Review Process — July 2008 <br />Revision 2 — Add LCRA TSC responsibilities to address NERC standards; add revision / change period — <br />March 2010, Revision 3 — add analysis statement April 2010, Revision 4 — add corrective actions, and <br />ERCOT supplied data statements — April 2010, Revision 5 - Add clarification, background information, <br />references to ERCOT and NERC, and requirements to insure UFLS coverage during scheduled outages <br />September 2011, Revision 6 — Add review process item #7 February 2013 <br />