PM Model – Thermodynamic (First Principles)
CM Model – Empirical (Data Driven)
Integrated PM/CM Model Combination of First
Principles & Empirical
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7
OLM
Trending/Filtering
Equipment/ Plant
Degradation
Data Validation/
Faulty Instruments Diagnostic
Flow Charts/ Trouble-shooting
Performance
Electronic Logs/ Alerts/ Reports
PI, OPC Data
Historians, NERC/CIP
Compatibility
Process Data
Recorded Over
Operating Range
Nonlinear Models
Unreliable Results from Extrapolation
Automated Techniques/
Expert Analysis
Residual Values for
Health Assessment
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• Data Filtering for Accurate/Comprehensive Reference Models
• Intelligent Alarm Thresholds to Minimize False Alarms/Maintain Earliest Notification of Anomalies
• First Principles Calculations with Enhanced Diagnostics
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KPIs
OPERATION/PERFORMANCE
AIRHEATER
ENVIRONMENT
FLUE GAS
CO
NOX
SO2
MAIN STEAMTEMPERATURE
REHEAT STEAMTEMPERATURE
FEEDWATERTO
THROTTLEFLOW RATIO
X-RATIODEVIATION
GAS SIDEEFFICIENCY
MAINSTEAM
DEWPOINT
EXCESSOXYGEN
AIRHEATER
EFFICIENCYEXCESSOXYGEN
FEEDWATERHEATERS
TURBINE-GENERATOR
IP TURBINEEFFICIENCY
STAGEPRESSUREDEVIATION
COOLINGSYSTEM BOILER
FEEDPUMPS
TURBINECYCLE
MAKE-UP
UNIT
AUXILIARYPOWER
EQUIPMENTINTEGRITY
BOILER
MAXIMUMHEAT INPUT
STACK
OPACITY
TEMPERATURE
REHEATSTEAM
TEMPERATUREAVERAGE COLD
ENDTEMPERATURE
BOILER
TEMPERATUREDEVIATION INDEX
UNALLOWABLE BOILER OPERATING CONDITIONSUNALLOWABLE AIR HEATER OPERATING CONDITIONS
UNALLOWABLE TURBINE OPERATING CONDITIONSUNALLOWABLE OVER-FIRING
ENVIRONMENTALCOMPLIANCE
HEATERPROBLEMS,
FOULING ISSUES
LONG TERMCONDENSER
ISSUES
TURBINE FOULING,UNALLOWABLE
OPERATING CONDITIONS
CONDENSERPRESSURE
COOLINGTOWER
TEMPERATURE MOTORAMPS
GAS SIDEPRESSURE
DROP
HP TURBINEEFFICIENCY
HEAT RATE HEAT RATE
TUBE LEAKS,EXCESSIVESLAGGING
GAS/AIR FLOWIMBALANCE, CASING
AIR INLEAKAGE,FOULING
• Revision Intended for Publication in 2015
• Incorporate Advances in Technology
• Consider PM/CM as Integral to Maximizing Asset Value
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Asset Health Management Assess/Compare Health
of Dissimilar Assets
Integrate Data from Various Sources
Objective Comparison of Health Improve Life/Performance of
Major Components
Boilers, T-G, Auxiliary Systems
Maximize Value/Life of Assets
Evaluate Advanced Monitors/Controls & Improve Combustion Performance
Design/Test Sensors for Real-Time Monitoring
Turbine Blades, Emissions Controls/Monitors
Current Initiatives
Utilizing Parameters for Diagnostics
Tools for Optimizing Performance
PM/CM Modeling
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