Transmission Outage Planning and Mitigation Strategies
Major planned transmission outages are typically known years in advance, allowing for effective construction outages and cost mitigation planning. Routine maintenance management systems provide necessary data for anticipating maintenance requirements over extended periods. Developing market impact estimates early in the outage planning process is key to evaluating and implementing mitigation options efficiently.
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Presentation Transcript
PLANNED TRANSMISSION OUTAGE PLANNING
MOST MAJOR PLANNED TRANSMISSION OUTAGES ARE KNOWN MANY YEARS IN ADVANCE CONSTRUCTION OUTAGES WELL KNOWN AHEAD OF TIME MITIGATION COST COULD BE INCLUDED IN CCN ROUTINE MAINTENANCE MAINTENANCE MANAGEMENT SYSTEMS PROVIDE DATA NEEDED TO ANTICIPATE ROUTINE MAINTENANCE REQUIREMENTS FOR A DECADE OR MORE ROUTINE MAINTENANCE TYPICALLY HAS SIGNIFICANT SCHEDULE FLEXIBILITY MAINTENANCE DUE TO INSPECTION RESULTS COULD BE AN EMERGENCY STILL TAKES TIME TO EVALUATE OPTIONS AND ASSEMBLE RESOURCES QUICKLY MOVE FROM PLANNING TO SCHEDULING IF NOT AN EMERGENCY TYPICALLY MORE TIME IS TAKEN TO EVALUATE DATA AND REPAIR OPTIONS AND THEN FOLLOWED WITH EQUIPMENT SPECIFICATIONS/PURCHASING AND RESOURCE PLANNING THERE IS LIKELY SOME SCHEDULING FLEXIBILITY FORCED OUTAGE IMMEDIATE ACTION POSSIBLE PLANNING FOR LONG RANGE REPAIR
INCLUDE AN ESTIMATE OF COST TO THE MARKET EARLY IN THE PLANNED OUTAGE PROCESS THIS IS A PLANNING PROCESS NOT A SCHEDULING PROCESS A ROUGH ESTIMATE (FIGURE OF MERIT) IS ALL THAT IS NEEDED USE STANDARD LOAD FLOW CASES WITH NO ADDITIONAL OUTAGES ADJUST GENERATION PATTERNS IF NEEDED TO EVALUATE POSSIBILITIES TSP COMMUNICATES ONLY WITH ERCOT NO STAKEHOLDER INVOLVEMENT THE TSP WILL HAVE A BETTER IDEA OF THE POTENTIAL VALUE OF MITIGATING MEASURES WORKING CIRCUITS HOT ADDITIONAL CREWS TEMPORARY STRUCTURES SCHEDULING CREZ AREA WORK DURING LOW WIND SEASONS DESIGN SPECIALTY TOOLS/JIGS AND SYSTEMS FOR SPEED AND SAFETY DEVELOP MARKET IMPACT ESTIMATES EARLY IN THE PROCESS TO INCREASE THE TIME TO EVALUATE AND IMPLEMENT OPTIONS
DEVELOPING A ROUGH ESTIMATE OF MARKET IMPACT DUE TO TRANSMISSION OUTAGES USE SSWG CASES AS IS FOR THE YEAR STUDIED USE STANDARD PRODUCTION COST DATA DO NOT MODEL ADDITIONAL TRANSMISSION OUTAGES MAY NEED TO MODIFY GENERATION PATTERNS THE OBJECTIVE IS TO START ESTIMATING EFFECTS INITIALLY LIMIT TSPs TO ONLY A FEW STUDIES PER YEAR DEVELOP A CRITERIA FOR SELECTING OUTAGES TO STUDY FOCUS IS ON MITIGATING STRATEGIES NOT SCHEDULING NEXT STEPS ESTIMATED STAFF IMPACT ON ERCOT INITIAL CRITERIA FOR SELECTING OUTAGES TO EVALUATE IMPACTS
