How are Load Distribution Factors (LDFs) calculated and used in the Day-Ahead (DAM) and Real-Time Markets (RTM)?
Load Distribution Factors (LDFs) are parameters used to calculate individual load megawatt (MW) values, given the ERCOT system-wide MW load. These parameters are kept for 24 hours, up to nine day types, and up to four seasons. For observable loads, these parameters are adapted with the results of the State Estimator using an exponential smoothening algorithm. In the RTM, LDFs together with ERCOT system-wide MW load, obtained from the Load Frequency Control (LFC) system, are used to calculate pseudo-load measurements to replace unavailable measurements in the State Estimator solution. The State Estimator load MW values are used as weighting factors for settlement prices for load zones. In Daily Reliability Unit Commitment (DRUC) and Hourly Reliability Unit Commitment (HRUC), hourly LDFs are used together with the hourly load forecast to compute hourly load MW values used in the optimization and settlement. In the DAM, LDFs are used to allocate offers, bids and source and sink of CRRs at
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- How are Load Distribution Factors (LDFs) calculated and used in the Day-Ahead (DAM) and Real-Time Markets (RTM)?
