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Steam Turbine Performance Remote Monitoring Presented by Deborah H. Cioffi, P.E. ARIPPA Technical Symposium 2005. The Old System. Consultant. Management. DAS. The New System. Consultant. Management. MDA Sentinel (SM). DAS. Benefits. Early warning of performance problems
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Steam Turbine Performance Remote Monitoring Presented by Deborah H. Cioffi, P.E. ARIPPA Technical Symposium 2005
The Old System Consultant Management DAS
The New System Consultant Management MDA Sentinel (SM) DAS
Benefits • Early warning of performance problems • Improved heat rate • Postpone outage based on heat rate • Reduced time spent on deciphering performance data • Monitor several systems (thermal, vibration, lubrication, etc.) • Post-issue analysis
Example • A typical plant – single reheat unit • A typical problem – high vibration on startup • Information flow • Problem identification • Problem solution
Typical Plant P T P T VP P P P P T T P T HP LP IP PWR
Vibration Problem… HP LP IP PWR W th↑ P x-o ↑ HP Eff - PWR ↓ P 1st↓ What needs to be repaired during this upcoming outage? IP Eff ↑ P hrh ↑
Information Flow Internet User interface displaying acquired / analyzed data Local data storage
DCS Sensor Control System Data Acquisition System • PXI (Compact PCI) by National Instruments • Oscilloscope-sized • Can connect to DCS, Control System or directly to sensors • Alarm level notification to pagers, phone, email • Project-specific or continuous monitoring • Repeatability of measurement process
Information Flow Internet User interface displaying acquired / analyzed data Local data storage
User Interface acquired analyzed data / User interface displaying • Custom Reports • Data Filters, Algorithms • Analysis • Historic Data • Life Monitoring
Information Flow Internet User interface displaying acquired / analyzed data Local data storage
Local Data Storage • Acquired data is first stored locally on the host system or an external storage device. Local data storage
Information Flow Internet User interface displaying acquired / analyzed data Local data storage
Internet • Internet connectivity can be achieved via satellite, DSL, or T1
Information Flow Internet User interface displaying acquired / analyzed data Local data storage
Remote Server • Data is backed up to a remote FTP server for future remote data retrieval • Secured, monitored data center in Denver • User has the option of how long to store data
Information Flow Internet User interface displaying acquired / analyzed data Local data storage
The Thinker… • Thermal Performance • Vibration • Control Systems • Rotor Stress • Generator Partial Discharge • Startup MD&A Engineers
Information Flow Internet User interface displaying acquired / analyzed data Local data storage
Data Retrieval • Clients log into a secure web page on the remote server allowing them to view and retrieve data from their system.
Remember that Vibration Problem… HP LP IP PWR Packings Rubbed
Costs • First year ~ $60k • Subsequent years ~ $35k + • Depends on: • Number of data points • Frequency of monitoring • Number of engineering reports • Data storage life
Questions • On thermal performance monitoring • Deborah H. Cioffi 518-399-3616 • On hardware and costs • Michael Winter 970-224-2223 x255
Thank You! Steam Turbine Performance Remote Monitoring Presented by Deborah H. Cioffi, P.E.