compression master planner

7/27/2019 Compression Master Planner

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COMPRESSION

MASTER PLANNERAn Expert System for Evaluation of

Gas Pipeline Compressor Station Equipment Options

Reciprocating Centrifugal

COMPRESSORS

MicroprocessorControlled

Compressor Cylinders

GAS PIPELINE COMPRESSION EQUIPMENT COMBINATIONS

Planners consider options from top to bottom of this decision tree *

Mechanical Drives

Induction

Motors

Synchronous

MotorsEngines Turbines

Hi Speed ASDsAdjustable Speed Dr ives

Hi speed motor

Motor & gear

Synchronous

Motors

Induction

Motors

PRIME MOVERS

CONTROL

Expert System is basedon this logic tree

Al lows users to find reasonable equipment combinat ionsfrom specification database of suppliers models

Evaluates and compares performance and life cycle costs

Speeds up and improves the decision making process

Makes broad industry experience from many companiesavailable to all staff members


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What Does Compression Master Planner Do?

Planner inputs station design requirements & up to tenmore operating points

Program sorts through database of specifications ofavailable equipment models to find reasonable combos ofCompressorsTurbines/engines/motorsDrives & capacity control

Compares gas vs. electric and centrifugal vs. reciprocatingcompression

Provides performance data & charts on the fly!

Provides life cycle cost comparison of up to six equipmentoptions.

200-500 combinations of equipment selections andoperating conditions can be evaluated in one fast analysis.Provides results in minutes, not weeks.

COMPRESSION MASTER PLANNER is overseen by aCompression Review Team made up of gas pipeline planners.Subscribing suppliers will be able to participate.

2,000

4,000

6,000

8,000

10,00 0

12,00 0

14,00 0

16,00 0

18,00 0

20,000

2,000 4,000 6,000 8,000 10,000 12,000 14,000

In le t Vo lu me ACF M


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What are the Benefits?

For gas pipeline planners and engineers

Provides faster & more thorough evaluations for assetdecisions

Flushes out options & equipment combinations which maynot be considered otherwise

Equipment options can be scoped in minutes, not weeks Al lows prel iminary screens to be provided to business

development, facilit ies planning, & engineering Makes broad industry experience available to newer staff

members

For equipment, service, power suppliers

Integrates and links product /service offerings and theiradvantages into platform viewed by customers

Enhances sales opportuni ties thru early exposure Makes marketing interactive via 24/7 links wi th customers Provides direct customer interaction via Compression

Review Team meetings.

Sunrise Springs near Albuquerque, one of the sites for CompressionReview Team meetings


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CENTRIFUGAL COMPRESSOR PERFORMANCE

Centrifugal Compressor Perfor mance MapSurge Line in Blue

Design Point

MAX ACFM,

12,700

MAX ACFM,

12,700

12384

5

67

910

0

2000

4000

6000

8000

10000

12000

0 2000 4000 6000 8000 10000 12000 14000

ACFM

Head

Alternate oper atingpoints

Design poin tSurge line

Minimum rpm

Alternate

Operatingpoints

USER VIEWS PERFORMANCE CHARTS such as:

1. HEAD vs. ACTUAL CU FT/MINwith constant efficiency & speed lines

with surge line and minimum speed line

2. SUCTION & DISCHARGE PRESSURES vs. FLOW

USER CLICKS DIALOG BOX TO SELECT BOTH THE CASE & THEOPERATING POINT ON THE FLY

USER CAN EASILY SEE WHICH OPERATING POINTS MAY VIOLATECONSTRAINTS such as:

Speed too high or too low

Actual cubic feet per minute or head too highProximity to the surge line

USER SEES TABLE OF ALL CONSTRAINTS FOR ALL POINTS

A DECISION CAN BE MADE TO KEEP THE SELECTION, CHANGECOMPRESSOR OR PRIME MOVER, OR MODIFY OPERATIONALPARAMETERS


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RECIPROCATING COMPRESSOR PERFORMANCE

Horsepower vs. Suction Pressureat design or alternate discharge pressure

0

5000

10000

15000

0 200 400 600 800 1000

Suction Pressure, psig

Horsepower

Maxrpm,al l double

acting

Minrpm,all single

acting

DesignorAlternateOp

Point

PrimeMoverHP

MinPrimeMoverHP

RodLoadLimit

Flow vs Suction Pressureat design or alternate discharge pressure

0

200

400

600

800

0 200 400 600 800 1000

Suction Pressure, psig

Flow,

MMSCFD Maxrpm, all double

acting

Min rpm, all singleacting

Designor AlternateOpPoint

RodLoad Limit

MAXIMUM FLOWmax speed

cylinders double acting

90% of max rod load

MINIMUM FLOWmax turn down, min speedcylinders single acting

Design or alternateoperating point

USER VIEWS PERFORMANCE CHARTS

FLOW or HORSEPOWER vs. PRESSURE (suction or discharge)At maximum flow & minimum flow capabil ity of system

Limit of 90 % of maximum compressive rod load shown

USER CLICKS DIALOG BOX TO SELECT BOTH THE CASE & THEOPERATING POINT ON THE FLY

USER CAN EASILY SEE WHICH OPERATING POINTS MAY VIOLATECONSTRAINTS such as:

Horsepower needed too high or too lowFlow too highRod load too high

USER SEES TABLE OF CONSTRAINTS FOR ALL POINTS

BORE, CYLINDER MODEL, or NUMBER OF POCKETS CAN BEADJUSTED on the fly & THE EFFECT VIEWED

A DECISION IS MADE TO KEEP THE SELECTION, CHANGE COMPRESSOROR PRIME MOVER, OR MODIFY OPERATIONAL PARAMETERS


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LIFE CYCLE COSTS

LIFE CYCLE COSTS for COMPRESSION PROJECTS

Net Present Value,cents/hp-hr(real $'s)

0

5

10

15

10 30 50 70 90

Utilization,

Gas Case 1

Gas Case 2

Gas Case 3

Elec Case 1

Elec Case 2

Elec Case 3

PROGRAM COMPARES INSTALLED CAPITAL, MAINTENANCE, &FUEL COST for any and all combinations of equipment.

NET PRESENT VALUE IS DISPLAYED vs. UTILIZATION (fraction ofthe time the equipment is in use)

PROGRAM PROVIDES DEFAULTS FOR ALL ECONOMIC INPUTS,but the user can override them based on company info or actual bids

ELECTRIC and GAS COMPRESSION OPTIONS are addressedemploying user-selected power and gas pr ice forecasts


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HOW DOES THE LIFE CYCLE COST MODEL WORK?

USER CAN USE DEFAULTS provided or modify them for

INSTALLED CAPITALINITIAL MAINTENANCE COSTS & ESCALATION WITH TIMEHEAT RATES & EFFICIENCIES

AVAILABILITYTURN DOWN RATIOSRECIP COMPRESSOR BORE, CYLINDERS, POCKETSSUBSTATION & POWER LINE EXTENSION CAPITAL i fapplicable

CAPITAL & MAINTENANCE DEFAULT ALGORITHMS are designed toreflect experience of several gas pipeline firms

EFFICIENCIES & HEAT RATES ARE CALCULATED for each piece ofequipment at each operating pointbased on load or po int onperformance chart --- then they are weighed according to the time ofoperation at the point in question

RECIPROCATING COMPRESSOR ENERGY USE is found bycalculating valve pressure losses & computing horsepower acrossthe cylinders at the required speed. Pockets are activated orcontro lled as needed.

From El Paso Corporation presentation at 2001 Gas/Electric Partnership workshop.


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The efficient way to compare the multitude of gas pipeline compressor station

options. ------- COMPRESSION MASTER PLANNER

Compressor Master Planner allows gas pipelines to see allopt ions, evaluate performance, and compare life cyclecosts almost instantly.

Equipment and energy suppliers can link relevantinformation and algorithms into the basic evaluationprogram.

Capability to evaluate both equipment options and multipleoperating points provides useful oversight at variousstages from screening to operational planning

Encourages more efficient interactions among businessdevelopment, facilities planning, & engineering

The COMPRESSION MASTER PLANNER TeamDr. W. Richard Schmeal, Gas/Electric Ventures, Houston, TX/Santa Fe, NMC. R. Tucker, Santa Fe, NM

ADVISORY BOARDAnders T. Johnson, El Paso Corporat ion, Colorado Springs, COMohan S. Dosanjh, RPM Engineering Consultancy, Birmingham, UKJohn Pitlak, Computer Technology Consultant, Santa Fe, NM

COMPRESSION REVIEW TEAMJorge Torres, Kinder MorganVirginia P. Granoff, Williams Gas Pipeline

Luis Alberto Pineda, El Paso Corporation

For more information, please contact:Dr. W. Richard Schmeal at 713 529 3216 [email protected]

compression master planner

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