Empowering Business in Real Time. © Copyright 2009, OSIsoft Inc.  All rights Reserved.  

Asset Optimization using PI and AF

Regional Seminar SeriesCincinnati

Nancy ShiffletOptimization AnalystNiSource Gas Transmission and Storage

October 7, 2009

Charles HarrisonOptimization Team LeaderNiSource Gas Transmission and Storage

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NiSource Gas Transmission & Storage

Employees: 1,571Total Payroll: $98 millionOperating States: 17Miles of Pipe: approximately 14,000Compressor Stations: 100Total Horsepower: About 1.1 millionAnnual Deliveries: About 1 trillion cubic feetNumber of customers: 72 LDCs and a variety of commercial usersStorage Fields: 37 in four statesTotal Storage Capacity: 590 billion cubic feetTotal Working Gas: 253 billion cubic feetPeak Day Deliveries: 7.4 billion cubic feet (4.5 bcf from storage)State taxes paid annually: $58.6 million

NGT&S CompaniesColumbia Gas Transmission Corp.Columbia Gulf Transmission Co.Crossroads PipelineGranite State Gas TransmissionCentral Kentucky Gas TransmissionMillennium Pipeline (partner)Hardy Storage Company (partner)

Key Growth ProjectsMillennium PipelineHardy Storage and TransmissionEastern Market ExpansionAppalachian ExpansionOhio Storage Expansion Project

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“Never in the history of our business have we needed to optimize how our assets perform as much as we do in today’s business environment. At $10 an MCF for gas for fuel for our compressor stations we spend $600MM US Dollars a year.”

Central Diagnostic Monitoring and

Analytics

Results / Benefits

The Challenge: Optimizing the performance ofour fleet of gas compressors in service at 100stations over 14,000 miles of pipeline

• Performance Measurement

• Real Time Discovery of Performance Degradation

• Unit to Unit Comparison

• Centralized Diagnostic Monitoring

• Transform NGT&S Operating Expertise into PI Analytics

• KPI Dashboards

• Reduction in Compressor Engine Fuel Consumption

• Increase in Compressor Engine Operating Range

• Improved Compressor Engine Reliability

Business Value – Asset optimization using PI and AF

Customer Business Challenge

How PI Stretches

OPC

Compressor Engine Controls

Gas Control

Environmental

Facility Planning

Gas Control SCADA SCADA

Electronic Measurement

Compressor Services

Pipeline Integrity

Measurement

Model

EMOperations SupportWeather Weather

ModelOPC

Field Services

Gas Chromatograph

GQ

Gas Quality

iFix

Environmental

Essential

PI Enterprise Professional

ACE/AF

Data Users

PI

Optimization Analysts

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Compression

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Compression

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Compression

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Efficiency

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Compressor Station Fuel – KPIs (Concept)

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Energy Cost – (CF$/mcf)*(7350BTU lhv/BHP hr)*(1cf/1000BTU hhv)*(1BTU hhv/0.915BTU lhv) *(BHP)*(1mcf/1000cf)

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KPI - Model Heat Rate/Actual (PI-AF)

8155.79

7784.36

9/29/2009 9:54:05 AM9/29/2009 1:54:05 AM 8.00 hours

CS2 Unit3

0

5000

10000

7677.35

7709.22

9/29/2009 9:54:05 AM9/29/2009 1:54:05 AM 8.00 hours

CS2 Unit2

0

5000

10000

8158.14

7983.36

9/29/2009 9:54:05 AM9/29/2009 1:54:05 AM 8.00 hours

CS2 Unit1

0

5000

10000

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KPI - Model Heat Rate/Actual (PI-AF Element Relative Display)

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AF in PI Datalink

  Unit1      

BHPHrs CurrentHeatRate Fuel   %

1667.72 8276.85122 14.6 OverRate by 3.68

  Heat Rate      

  7983.359974 240 7743.85918 79.83

      8222.86077  

  Unit1      

BHPHrs CurrentHeatRate Fuel   %

1726.32 8525.901392 14.9 OverRate by 9.02

  Heat Rate      

  7820.374118 235 7585.76289 78.2

Thank youThank you

© Copyright 2009 OSIsoft, Inc.

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