CASE STUDY:CONTROLS UPGRADEADDS RESILIENCY AND
OPERATION FLEXIBILITY.

TOMONI®
Data Foundation and Enablers,
O&M Optimization
Netmation 4S DCS and Major
Equipment Control Systems
Upgraded
Netmation Protect Pack
PLANT DETAILS• Enel Generación Costanera• MHI GTCC entered service
in 1998• Full turnkey by MHI• Buenos Aires, Argentina
EQUIPMENT NOTES• 2 Mitsubishi M701F
Gas Turbines• 1 Mitsubishi Steam Turbine• 2 Mitsubishi HRSG
• GTCC major equipment control
systems upgraded to DIASYS
Netmation 4S with Netmation
Protect Pack
• Upgrades installed:Phase 1 2019, Phase 2 2021

CHALLENGE
Enel Generación Costanera is the largest thermal power plant in Argentina, with a natural gas–fueled 851 MW combined-cycle
power block that entered commercial operation in 1998. Costanera is strategically located in the heart of Buenos Aires andis one of the most important GTCC plants in South America. Enel has a strong commitment to protect the environment andstrengthen energy supply security by extending the useful life of this plant with advanced technology that improves reliability,sustainability and availability. Rapidly evolving advancements in real-time data analytics, remote O&M support and datadriven predictive maintenance challenged the existing two-decade-old control platform.
Keeping the digital control systems of important generating units updated to the latest reliability and cybersecurity
standards is always a challenging task. ENEL viewed the upgrade of the Costanera GTCC DCS and power block
control systems as a key enabler for digitalization required to support decarbonization, the increased penetrationof renewables and long-term sustainability. The challenge was how to implement the upgrade in a preplanned andphased manner that had the least disruption to normal plant operation.

SOLUTIONRESULT

After a rigorous evaluation, Enel chosean upgrade to Mitsubishi Power‘sDIASYS Netmation 4S controls platform,in two phases:•	Phase 1 in 2019 included HMI upgrades using
virtualized servers and thin-client displays to improvecybersecurity and mitigate equipment obsolescence,
Netmation Protect Pack (NPP) cybersecurity
management, OPC Server for plant-wide data
management and associated cybersecurity firewalls.
• P hase 2 in 2021 included CPU replacement to highercapacity triple-redundant controllers and full D-ring–redundant I/O network.
All main systems were modularized, prefabricatedand factory-tested with simulation prior to shipment tosimplify on-site work and reduce commissioning time.
Existing cabinets, I/O terminal panels, sensors andcabling were reused.

DATA FOUNDATION& ENABLERS

The system was designed to support predictive analytics
and remote O&M management for the entire plant.
Cybersecurity was directly integrated into the design,
ensuring that the power plant is protected against theincreasing prevalence of cyberthreats.

FLEXIBLE
O&M
OPTIMIZATIONOPERATIONSSOLUTIONSPERFORMANCEIMPROVEMENTIMPROVEMENTSOLUTIONSFLEXIBLEOPERATIONSOPERATIONSSOLUTIONSMitsubishi’s experience as a power block equipment andtotal plant designer, and rigorous preplanning together
with Enel, resulted in as-planned execution of this major
control system upgrade, which included valve calibrations
and combustion tuning during the difficult period of thepandemic. The upgrade was completed early, and startup
in combined-cycle mode had no problems.
DATA
FOUNDATIONFOUNDATION& ENABLERS& ENABLERS

The Costanera GTCC is now running with improved reliability,fault tolerance and online self-diagnostics. The higher
reliability and enhanced maintainability enable long-term
cost savings with the ability to more easily integrate
future advanced control and remote support technology.
This upgrade has added resiliency and operation flexibility
to support Enel’s reliability and sustainability goals.

“Both phases of the solution implementation wereexcellently planned and executed by the joint team of
Mitsubishi USA and Japan. Not only does this newcontrols platform improve plant reliability, but it also
positions the plant for the future with a comprehensive
data infrastructure and cybersecure connectivity toincorporate future advancements in data analytics.”
O&M
OPTIMIZATIONPERFORMANCEPERFORMANCEIMPROVEMENTIMPROVEMENTSOLUTIONSFLEXIBLE
FLEXIBLE
OPERATIONSOPERATIONSSOLUTIONS 

Alejo Nuin
Plant Manager, Enel Generación Costanera S.A.

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-11DS42E2-A