CASE STUDY:INTELLIGENT SOLUTIONSPOSITION OREGON
PLANT FOR ADDITIONALCAPACITY AND REVENUE.

TOMONI®
Flexible Operation
Flex Pack Performance Module
PLANT DETAILS• Carty Generating Station• Owned by Portland GeneralElectric• Boardman, Oregon
EQUIPMENT NOTES• 440 MW 1-on-1 Multishaft
Combined Cycle• Mitsubishi Power M501GAC
Gas Turbine• TOMONI Solution Installed:
2019

CHALLENGE
Portland General Electric (PGE) expects the demand for electricity to increase by about 20 percent during the next 20 years.
This led them to build the Carty Generating Station in 2016 to serve customer demand, meet additional growth and maintaina reliable supply of power. Carty is operated much of the time at base load, often with duct firing, testifying to the value ofmaximizing output at its critical location in the grid. PGE was looking for additional output at this location during times of highmarket demand and to provide additional contingency for constraints from California.

SOLUTIONRESULT

PGE worked with Mitsubishi Power to find a solutionthat provided increased output and operational
flexibility in this critical plant. In 2019, they installed
the TOMONI Flex Pack Performance Module. The Performance Module provides the flexibility to increase output or
reduce heat rate to optimize plant economics, providing
additional opportunities for energy and capacity sales. Each
implementation of the Flex Pack is tailored to the gas turbine
and plant, as well as local grid and market requirements.

The Flex Pack improved cost per MW, increased flexibility
and provided opportunities to take advantage of market
conditions through peak fire. PGE estimates they will use
the Flex Pack for around 1,500 hours per year. At Carty,performance testing validated increased output of over 5MW. This increased output during periods of high demandis valued at $0.5–1 M per year, even in this hydro-rich areaof relatively low wholesale power costs. An additional
benefit is the ability to reduce GTCC heat rate at higher
loads by 0.3% during periods when the Maximum Output
Mode and Peak Firing Mode are not needed.

For applications of the Flex Pack Performance Module,
Mitsubishi Power engineers study current operating
settings, ambient temperature and cooling usage to develop
the plant-specific parameters of three modes of operation:• Maximum Efficiency Mode is set for the most efficient
operation of the gas turbine through reduced flow andoptimized compressor operating points at nominal baseload firing. It has no impact on parts life and is capable oftracking near maximum load at improved heat ratefor reserve.
• Maximum Output Mode is set for maximum output withno impact on parts life. It increases the compressor air
flow and gas turbine output at nominal base-load firing.

DATA FOUNDATION& ENABLERS• Peak Fire Mode goes beyond output achievable withthe Maximum Output Mode by increasing the firing
temperature above the rated firing temperature. Thismode is used during high demand or grid emergencies
and includes a maintenance factor when utilized.

FLEXIBLE
O&M
OPTIMIZATIONOPERATIONSSOLUTIONSPERFORMANCEIMPROVEMENTIMPROVEMENTSOLUTIONSFLEXIBLE
OPERATIONSOPERATIONSSOLUTIONSDATAFOUNDATIONFOUNDATION& ENABLERS& ENABLERS

The TOMONI Flex Pack is one of many intelligent solutions
that provide O&M Optimization, Performance Improvement
and Flexible Operation of important thermal power plants.

“The overall impact of the TOMONI Flex Pack has been

positive, and testing of the modes shows improvementin the cost per MW. The cost was reasonable, and theuse of new operational modes has been beneficial to ouroperations. It provides us flexibility to take advantage ofmarket conditions.”
O&M
OPTIMIZATIONPERFORMANCEPERFORMANCEIMPROVEMENTIMPROVEMENTSOLUTIONSFLEXIBLEFLEXIBLE
OPERATIONSOPERATIONSSOLUTIONS 

Lee Archer
Director of Thermal Plants East

Each mode can be selected while the gas turbine is online
and offers the optimized power and heat rate setting forspecific situations.
TOMONI® is a suite of intelligent solutions that accelerates decarbonization with power plant design, O&M and system knowledge, together withstrong customer and partner collaborations. TOMONI leverages advanced controls, artificial intelligence and machine learning with multi-layered
cybersecurity to make energy systems smarter, more profitable and ultimately more autonomous on the road to a sustainable future.

O&M
OPTIMIZATION© Mitsubishi Heavy Industries, Ltd. All rights reserved. TOMONI® is a registered trademark of Mitsubishi Heavy Industries, Ltd.
Mitsubishi Power is a power solutions brand of Mitsubishi Heavy Industries.

Data Foundation & Enablers
O&M Optimization
Performance Improvement
Flexible Operations
METP-11DS38E2-A