2013 asme power conference analysis of turbine cycle performance, operation and reliability issues...
TRANSCRIPT
Analysis of Turbine Cycle Performance, Operation and Reliability Issues Using Heat Balance Techniques
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First Law of Thermodynamics
Mass & Energy Balances
Complete Accounting
Closed Cycle & Interrelationships
Components Affect One Another
Calculation of Heat Inputs &
Electrical Outputs
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Cycle Isolation
Operating Conditions
Process Data
Equipment Status
Plant Configuration
Load
Derating
Outages
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Unit No. 1 (110 MW)
Fleet of Coal-Fired
Plants - 3 Units
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1. Develop Design Heat
Balance Model
2. Develop As-Is Heat Balance Model
3. Validate Plant
Instrumen- tation
4. Validate As-Is Heat Balance Model
5. Compare FWH KPIs
6. Monitor KPIs
7. KPI Alerts
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Performance Test Data
Acceptance Test Data
Component Design Data
Thermal Kit - Turbine Generator
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1. Set Design Heat Balance Model to Match Boundary Conditions
Throttle Pressure
Throttle Temperature
HRH Temperature
Condenser Pressure 2. Converge on Generator Output
Check Throttle Flow or FW Flow & 1stg Pressure
Check CRH Pressure
3. Match HP, IP Turbine Efficiencies to Plant Values
4. Adjust Model to Match FWH Outlet Temps
5. Adjust Turbine Efficiency to Match Generator Output & Turbine Cycle Heat
Rate
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1. Gather Data at Full Load
2. Compare Instrument Data with Models
3. Match HP, IP Turbine Efficiencies to Plant Values
4. Use Following Order to Validate
1. Gross Output
2. Temperatures
3. Pressures
4. Flows
5. Look for Consistency Fluid Properties
First Law
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Case 1 - Feedwater Flow Gross Generation
Mismatch
First Stage Pressure Mismatch
Case 2 - Gross Generation
Feedwater Flow Mismatch
First Stage Pressure Mismatch
Case 3 - First Stage Pressure
Feedwater Flow Mismatch
Gross Generation Mismatch
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1. Boiler Heat Input Limitation – Capacity, Heat Rate
EPA CEMS 40 CFR Part 60
EPA CEMS 40 CFR Part 75
Real-Time Monitoring
Heat Balance Model
2. Overall Plant
3. KPIs
Boiler/Air Heater
Air Heater
HP FW Heaters
LP FW Heaters
Condenser
Cooling Tower
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Analysis/Diagnostics
Methodology
Heat Balance Techniques
Use of Physical Laws
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Thank You!
Contact Information:
Power & Energy Systems Services • Komandur Sunder Raj • 201-638-4635 • [email protected]
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