Steam Turbine Steam Turbine Performance Performance

Remote Remote MonitoringMonitoring

Presented byPresented by Deborah H. Cioffi, P.E.Deborah H. Cioffi, P.E.

Steam Turbine Steam Turbine Performance Performance

Remote Remote MonitoringMonitoring

Presented byPresented by Deborah H. Cioffi, P.E.Deborah H. Cioffi, P.E.

ARIPPA Technical Symposium 2005

The Old SystemThe Old System

DASDAS

ManagementManagement ConsultantConsultant

The New SystemThe New System

DASDAS

ManagementManagement

ConsultantConsultant

MDA Sentinel (SM)MDA Sentinel (SM)

BenefitsBenefitsBenefitsBenefits

• Early warning of performance problemsEarly warning of performance problems

• Improved heat rateImproved heat rate

• Postpone outage based on heat ratePostpone outage based on heat rate

• Reduced time spent on deciphering performance dataReduced time spent on deciphering performance data

• Monitor several systems (thermal, vibration, lubrication, etc.)Monitor several systems (thermal, vibration, lubrication, etc.)

• Post-issue analysisPost-issue analysis

• Early warning of performance problemsEarly warning of performance problems

• Improved heat rateImproved heat rate

• Postpone outage based on heat ratePostpone outage based on heat rate

• Reduced time spent on deciphering performance dataReduced time spent on deciphering performance data

• Monitor several systems (thermal, vibration, lubrication, etc.)Monitor several systems (thermal, vibration, lubrication, etc.)

• Post-issue analysisPost-issue analysis

ExampleExample

• A typical plant – single reheat unitA typical plant – single reheat unit

• A typical problem – high vibration on A typical problem – high vibration on startupstartup

• Information flowInformation flow

• Problem identificationProblem identification

• Problem solutionProblem solution

• A typical plant – single reheat unitA typical plant – single reheat unit

• A typical problem – high vibration on A typical problem – high vibration on startupstartup

• Information flowInformation flow

• Problem identificationProblem identification

• Problem solutionProblem solution

Typical PlantTypical Plant

HP

IP LP PWR

P

T

VP

T

P

T

P

TP

PP

TP

Vibration Problem…Vibration Problem…

HP

IP LP PWR

P 1P 1stst ↓↓

IP Eff IP Eff ↑↑

W thW th ↑↑P x-o P x-o ↑↑

P hrh P hrh ↑↑

HP Eff -HP Eff -PWR PWR ↓↓

What What needs to needs to

be be repaired repaired

during this during this upcoming upcoming outage?outage?

Local data storage

User interface displaying acquired / analyzed data

Internet

Information FlowInformation Flow

Data Acquisition SystemData Acquisition System

• PXI (Compact PCI) by National InstrumentsPXI (Compact PCI) by National Instruments• Oscilloscope-sizedOscilloscope-sized• Can connect to DCS, Control System or directly to sensorsCan connect to DCS, Control System or directly to sensors• Alarm level notification to pagers, phone, emailAlarm level notification to pagers, phone, email• Project-specific or continuous monitoringProject-specific or continuous monitoring• Repeatability of measurement processRepeatability of measurement process

• PXI (Compact PCI) by National InstrumentsPXI (Compact PCI) by National Instruments• Oscilloscope-sizedOscilloscope-sized• Can connect to DCS, Control System or directly to sensorsCan connect to DCS, Control System or directly to sensors• Alarm level notification to pagers, phone, emailAlarm level notification to pagers, phone, email• Project-specific or continuous monitoringProject-specific or continuous monitoring• Repeatability of measurement processRepeatability of measurement process

SensorSensor

DCSDCS

Control SystemControl System

Local data storage

User interface displaying acquired / analyzed data

Internet

Information FlowInformation Flow

acquired / analyzed data

User InterfaceUser Interface

• Custom ReportsCustom Reports

•Data Filters, AlgorithmsData Filters, Algorithms

• AnalysisAnalysis

• Historic DataHistoric Data

• Life MonitoringLife Monitoring

Local data storage

User interface displaying acquired / analyzed data

Internet

Information FlowInformation Flow

Local Data Local Data StorageStorage

• Acquired data is first Acquired data is first stored locally on the host stored locally on the host system or an external system or an external storage device.storage device.

• Acquired data is first Acquired data is first stored locally on the host stored locally on the host system or an external system or an external storage device.storage device.

Local data storage

Local data storage

User interface displaying acquired / analyzed data

Internet

Information FlowInformation Flow

InterneInternett

Data Acquisition System

• Internet connectivity Internet connectivity can be achieved via can be achieved via satellite, DSL, or T1satellite, DSL, or T1

• Internet connectivity Internet connectivity can be achieved via can be achieved via satellite, DSL, or T1satellite, DSL, or T1

Local data storage

User interface displaying acquired / analyzed data

Internet

Information FlowInformation Flow

• Data is backed up to a Data is backed up to a remote FTP server for remote FTP server for future remote data future remote data retrievalretrieval

•Secured, monitored data Secured, monitored data center in Denvercenter in Denver

• User has the option of User has the option of how long to store datahow long to store data

• Data is backed up to a Data is backed up to a remote FTP server for remote FTP server for future remote data future remote data retrievalretrieval

•Secured, monitored data Secured, monitored data center in Denvercenter in Denver

• User has the option of User has the option of how long to store datahow long to store data

Remote ServerRemote Server

Local data storage

User interface displaying acquired / analyzed data

Internet

Information FlowInformation Flow

The The Thinker…Thinker…

MD&A EngineersMD&A Engineers

• Thermal PerformanceThermal Performance• VibrationVibration• Control SystemsControl Systems• Rotor StressRotor Stress• Generator Partial DischargeGenerator Partial Discharge• StartupStartup

• Thermal PerformanceThermal Performance• VibrationVibration• Control SystemsControl Systems• Rotor StressRotor Stress• Generator Partial DischargeGenerator Partial Discharge• StartupStartup

Local data storage

User interface displaying acquired / analyzed data

Internet

Information FlowInformation Flow

Data RetrievalData Retrieval• Clients log into a Clients log into a secure web page on the secure web page on the remote server allowing remote server allowing them to view and retrieve them to view and retrieve data from their system.data from their system.

• Clients log into a Clients log into a secure web page on the secure web page on the remote server allowing remote server allowing them to view and retrieve them to view and retrieve data from their system.data from their system.

Remember that Vibration Remember that Vibration Problem…Problem…

HP

IP LP PWR

Packings Packings

RubbedRubbed

CostsCosts

• First year ~ $60kFirst year ~ $60k

• Subsequent years ~ $35k +Subsequent years ~ $35k +

• Depends on:Depends on:

– Number of data pointsNumber of data points

– Frequency of monitoringFrequency of monitoring

– Number of engineering reportsNumber of engineering reports

– Data storage lifeData storage life

• First year ~ $60kFirst year ~ $60k

• Subsequent years ~ $35k +Subsequent years ~ $35k +

• Depends on:Depends on:

– Number of data pointsNumber of data points

– Frequency of monitoringFrequency of monitoring

– Number of engineering reportsNumber of engineering reports

– Data storage lifeData storage life

QuestionsQuestions

• On thermal performance monitoringOn thermal performance monitoring

– Deborah H. Cioffi 518-399-3616Deborah H. Cioffi 518-399-3616

• On hardware and costsOn hardware and costs

– Michael Winter 970-224-2223 x255Michael Winter 970-224-2223 x255

• On thermal performance monitoringOn thermal performance monitoring

– Deborah H. Cioffi 518-399-3616Deborah H. Cioffi 518-399-3616

• On hardware and costsOn hardware and costs

– Michael Winter 970-224-2223 x255Michael Winter 970-224-2223 x255

Steam Turbine Steam Turbine Performance Performance

Remote Remote MonitoringMonitoring

Presented byPresented by Deborah H. Cioffi, P.E.Deborah H. Cioffi, P.E.

Steam Turbine Steam Turbine Performance Performance

Remote Remote MonitoringMonitoring

Presented byPresented by Deborah H. Cioffi, P.E.Deborah H. Cioffi, P.E.