doris mcleod air quality planner virginia deq 804/698-4197 [email protected] ertac tool...
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DORIS MCLEODAIR QUALITY PLANNER
VIRGINIA DEQ804/698-4197
dor i s [email protected] i rg in ia .gov
ERTAC Tool Logic and Flowcharts
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PRESENTATION OVERVIEW
Preprocessor Functions Data QA Data manipulations Calculations
Projection Processor Functions Generation calculations Generation deficit units defined, if needed Excess power redistribution-Two step process Outputs
Post ProcessorsQuestions?
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Preprocessor Functions
Need for preprocessingPreprocessing allows improved projection
outputsBasic functions:
Hourly CAMD data update to remove non-EGUs Examine data outliers Sets up base year (BY) structure Examines input files
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Preprocessor
Creates a preprocessor log file Important for QA Improves input
files
Files from the preprocessor are fed to the processor
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Projection Processor, Part 1
Calculates future generation By region and fuel/unit type Outputs are modular
Capacity deficit check May generate generation deficit units Treated as new units, with profiles
Grows all existing units based on hourly growth rates
Determines if there is excess generation in any hour
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Capacity check GDUs May require
recalculation
Grow existing units for each hour of the year
Creation of Excess Generation Pool (ExGen)
Projection Processor, Part 1
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Distributes ExGenTwo step
distribution Optimal threshold Maximum
thresholdActivity for a unit
depends on Growth rates, New units, Retired units, Capacity
constraints on other existing units
Projection Processor, Part 2
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Spinning reserve check
Additional capacity available up to 100% of largest unit on line
Sends up a red flag if reserve requirements are not met
Projection Processor, Part 4
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Calculates emissions
Compares state and regional emissions against supplied caps
Sends up a red flag caps are not met
Does not currently assign tool-generated controls to ensure caps are met
Projection Processor, Part 5
X
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Projection Processor Notes
Future year (FY) activity is firmly grounded in BY meteorology
Many FY estimates may be adjusted by region and fuel unit type bin in the input_variables
NonCAMD units may be included IF: Hourly BY activity data in a CAMD-like format exists AEO/NERC growth rates are applicable to the unit
Creates a processor log file Output files are quite large (hourly data):
3,000-4,000 units, most with 8,760 hours of data; Input and output files each several gigabytes
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Post Processors
Several have been developed
Aids in data review and trouble shooting
Output files are large, but can be manipulated in very interesting ways
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Graphical Post Processor
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Graphical Post Processor
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ORIS/Unit IDFacility Name, State,
RegionFuel/Unit TypeActivity Data
Annually and OSEmissions Data
NOx, SO2 Annually and OS
Other data Lat/longs Retirement dates
May be used for QA
Can be manipulated into charts and spreadsheets
Compared with inventory estimates
Enhanced Unit Activity File
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Pivot Table Options
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BY vs FY Generation
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Pivot Table Options, Facility Level
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BY vs FY Annual NOx Emissions
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Pivot Table Options, Unit Level
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BY vs FY Annual NOx Emissions
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DORIS MCLEODAIR QUALITY PLANNER
VIRGINIA DEQ804/698-4197
dor i s [email protected] i rg in ia .gov
Questions? Comments? Thoughts?
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