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Genesys. Hydro Shaping & Thermal Logic. Review of Dispatch. Monthly –> monthly hydro energy Window –> hourly hydro dispatch price Day –> hydro energy for day shaped into hours Hourly -> final hourly dispatch. Day Dispatch. Economic dispatch of thermal and hydro resources
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Genesys Hydro Shaping & Thermal Logic
Review of Dispatch • Monthly –> monthly hydro energy • Window –> hourly hydro dispatch price • Day –> hydro energy for day shaped into hours • Hourly -> final hourly dispatch
Day Dispatch • Economic dispatch of thermal and hydro resources • Output is amount of hydro energy for the day • Assuming thermal is run flat through the day (with exceptions) the hydro energy is shaped to the hourly load • Hydro shaping determines hydro amount in each hour
Hourly Dispatch • Hydro amount for the hour is broken into two parts: hydro minimum @ zero price and rest of hydro @ window marginal hydro price • Thermal is either must run or completely displaceable
“Thermal Cycling”completely displaceable thermal plants can make hourly individual plant results look funny
LOLP • Affected by water condition, thermal FOR, wind variation, load variation • Not affected by thermal commitment
Genesys Conclusions • Current Hydro / Thermal logic reflects whether we can keep the lights on • It does not reflect accurate results for individual thermal plants