ECOMAXTM

Automated Lean Premixed Combustion Tuning

Why Do I Need ECOMAXTM?

Variables

Many variables affect turbine performance

Why Do I Need ECOMAXTM?

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CODynamics

Flame Stability

NOx

Drift due to ambient

(Hot Weather)

Combustor Operating Envelope

Shift due to mechanical

issue

Daily Operating Envelope

As left from last tune

Drift due to ambient

(Cold Weather)

TYPICAL GAS TURBINE OPERATIONAL ENVELOPE

ECOMAXTM GAS TURBINE OPERATIONAL ENVELOPE

CODynamics

FlameStability

ECOMAXTM customizedoperations envelope

Owner Defined Buffer / Margin

NOx

ECOMAXTM

Tuning Event

Combustor Operating Envelope

Optimized Power

Optimized NOx

Optimized Dynamics

ECOMAXTM adjusts for these variables in real-time

How Does ECOMAXTM Work?

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Infrastructure:• Stand-alone PLC communicates with gas turbine controller through the plant DCS

– Could communicate directly with the gas turbine controller– Receives real-time pertinent operating parameters (turbine, fuel gas temperature controller, etc.),

and optimizes performance based on User’s Needs

Typical ECOMAXTM

Communication SchematicTypical ECOMAXTM User

Interface

ECOMAXTM In Action – Emissions

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A Typical Turbine’s Weekly Emissions Performance

ECOMAXTM In Action – Dynamics

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A Typical Turbine’s Weekly Dynamics Performance

ECOMAXTM In Action – Dynamics

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ECOMAXTM Dynamics Tuning Event

Case Study #1 – ECOMAXTM Tru-CurveTM

Process, Combined Cycle 2:1 Configuration

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ECOMAXTM Tru-CurveTM Process – Power Increase

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ECOMAXTM Tru-CurveTM Process – Power Increase

Case Study #2 – ECOMAXTM Tru-CurveTM

Process, Simple Cycle 1 Unit

Case Studies – ECOMAXTM Tru-CurveTM Process

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ECOMAXTM Tru-CurveTM Process – Power Increase

Successfully delivered targeted results Plant Operating Flexibility & Optimization Maintains Emissions Compliance Minimizes Dynamics Improved Combined Cycle Heat rate – 0.20 to 0.25% Increased Power Output – 8 to 11 MW per power block, Combined

Cycle (Qty: 3 blocks) Increased Power Output – 4 to 5 MW per GT, Simple Cycle Firing temperature maintained within OEM limits Eliminates manual tuning requirements Strong return on investment

Monitoring Program Platform for further enhancements

Turndown Heat Rate Optimization Peak firing

Monitoring & Diagnostics Center In Orlando, FL12 units – 61,000+ operating hours

Monitoring & Diagnostics – Overview

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Infrastructure:• Receiving real-time plant operational

data (via Pi) in Orlando, Troy, and Austin sites

• Software continuously scans current data for anomalies / alarms

• Software sends out real-time emails indicating anomalies / alarms

• Orlando main M & D site– Staffed by 3 people

• Real-time monitoring of your equipment

• Call-In number to talk with GTE personnel about concerns

What Does M & D Do?• Continuously checks real-time efficacy of

ECOMAXTM, turbine performance , etc.• Provides plant with information related to

ECOMAXTM’s performance– GTE M & D staff call plant when key real-

time alarms come in– Provides monthly M & D reports indicating

ECOMAXTM’s performance• Executive Summary describes unit overview, including

key parameter trends, emissions, dynamics, and ECOMAX™ tuning analysis

• Graphs highlight important unit trends• Customizable Event Chronology presents data in

tabular format, based on plant configuration and needs (e.g. every ECOMAXTM combustion optimization event, such as fuel split changes, fuel heating changes or control curve changes)

• Instrumentation status (any key instruments out of service)

ECOMAXTM Summary and Conclusions

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ECOMAXTM is:• A stand-alone PLC that optimizes gas turbine performance in real-

time, based on a customer’s needs– Emissions– Output– Heat Rate

• An integrated solution that can further optimize other plant systems

– 4 Patents pending• A product existing on 12 total units – all currently DLN2.6

– 4 sites– 51,000+ operating hours– Mark V <I>, Mark V HMI, Mark VI– DLN 1.0 is under development and testing

• A product demonstrating the ability to tune after HGPI / CI outages, without having a tuner on-site

– 2 Post-Hot Gas Path combustors tuned automatically in Spring 2009– Numerous Post-Combustion Inspections (CI’s) tuned in 2010

• Monitored, in real-time, by Orlando M & D for any anomalies, or pre-defined status indications

– Real-time alarms are sent to relevant parties