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Because legacy generator control systems are limited by the technology of their eras, GE Vernova* offers both fully engineered and installed system replacements and “controls only” retrofits.
GE Vernova’s EX2100e excitation solutions build on more than 50 years of industry experience and an installed base of more than 10,000 units in 70 countries across gas, steam, and hydro applications.
Integrated solution Highly integrated with plant and turbine controls.
Proven reliability Minimal component design approach improves reliability.
Improved outcomes Advanced algorithms help deliver improved outcomes in today’s demanding grids.
GE Vernova’s EX2100e excitation control system is a software-enabled generator control system applicable for steam (including nuclear), gas, and hydro generators. The EX2100e has configurations for both new installations and retrofit of existing systems. EX2100e control hardware and software is an integral part of the Mark* VIe control product line.
Integration between excitation systems, turbine control, static starter, distributed control systems (DCS), and the human-machine interface (HMI) is seamless, requiring no third-party interfaces or gateways.
For stand-alone retrofit applications, tight integration with plant control systems is enabled through multiple protocols including Modbus/TCP or hardwired.
The EX2100e uses the ControlST* software suite, which contains several high-performance tools for easy use from both operation and maintenance personnel.
Seamless integration provides direct connectivity from parameters on operator screens to their corresponding alarm history, trends, logic diagrams, watch windows, and browsers.
ControlST integrates vital data throughout the plant—including data from external systems that would otherwise be unavailable—and presents it in a meaningful context, reducing system costs.
Armed with the right information at the right time:
The ControlST software suite includes several high-performance tools:
The EX2100e product family includes simplex and redundant automatic voltage regulator systems, typically used for smaller excitation currents. This solution is specifically designed to address all sizes of generators and embeds all the necessary control, limitations, and protection to help the generator operate safely. This flexible excitation product can be customized to retrofit most configurations.
For higher excitation currents, the thyristor-based EX2100e static excitation systems are available in several configurations to provide flexibility and to economically meet field current requirements. Its control architecture features a simplex configuration or redundant (triple modular redundancy) configuration combined with converter redundancy (warm backup, n-1, n-2) for highest availability.
EX2100e automatic voltage regulators can be integrated with synchronization, and protective EX2100e automatic voltage regulators can be integrated with synchronization. EX2100e automatic voltage regulators can be integrated with synchronization and protective devices to provide a complete generator control and protection solution.
EX2100e excitation systems offer highly advanced algorithms to:
For gas turbines, GE Vernova offers a combined package of an EX2100e excitation system and an LS2100e static starter, both featuring the Mark VIe control system. This highly integrated solution offers efficient and reliable gas turbine operation.
GE Vernova offers our customers with legacy excitation control systems to upgrade to our EX2100e Digital Front-End (DFE), a controls-only retrofit that offers a fully digital platform at a fraction of the time and cost of a conventional excitation control system upgrade.
By retaining your existing power conversion bridges, this retrofit delivers a low-impact cost-effective option to modernize aging controls while driving additional return on your controls investment.
With an expanding portfolio of advanced generator control & protection platforms and services, we provide design, installation, and commissioning services with experience gained from over 2,000 gas, steam, and hydro turbine upgrades in more than 70 countries.
The GE Vernova team works with customers to deliver modernization solutions across a wide range of excitation applications with offerings structured to meet both technical and budget requirements.
As standalone generator control project or integrated with the GE Mark™ control platform, GE Vernova can tailor flexible retrofit solutions from a global team of experts in the control and protection of critical generating assets.
While the Alterrex excitation control system stood as an industry standard for nearly 30 years, technology and operating demands have changed. It’s time to modernize.
We offer a comprehensive set of control and mechanical modernization options to help ensure the performance of your Alterrex systems.
The EX2100e Alterrex Regulator replacement provides precise control and protection for your main generator and the Alterrex alternator.
Our drop-in Alterrex rectifiers feature modern flat-pack diodes, machined billet aluminum heat sinks, and all stainless-steel fluid path and fittings for a virtually maintenance-free replacement.
And while the Alterrex utilizes the highly reliable stator water cooling (SWC) system to cool the fixed diodes, adding our dual Alterrex SWC filter assembly can enhance reliability.
Successful generator control system retrofits require more than just hardware. We specialize in integrating new controls into existing plant infrastructure. Our multi-disciplinary team of experienced engineers and designers are happy to tailor controls retrofits for your unique situation.
Our scalable Engineering Design Package (EDP) is tailored to meet your critical planning and execution requirements with greater efficiency, improved safety, less risk, and lower total costs. Depending on the complexity of your project, this may include:
gallons of water stored at facility
More than 20 years old and facing obsolescence, excitation systems at the Taum Sauk hydroelectric plant—which provides power during peak demands— frequently required service and experienced multiple failures.
Following EX2100e installation—and resulting conversion from a simplex to redundant regulator—the Taum Sauk Plant increased uptime and significantly reduced concerns over unit failure and lost generation.
* Indicates a trademark of GE Vernova and/or its subsidiaries. All other trademarks are the property of their respective owners.
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