GE EX2000 Excitation Control System

Configurations for Regulator and Fully Static Excitation Systems

The EX2000 offers configurations to support:

• Regulator-Based Systems: These systems are compatible with brushless, ALTEREX, DC commutation, or SCT-PPT applications, ensuring adaptability across different generator models.
• Fully Static Excitation Systems: These can handle potential (voltage-only) or compound (voltage and current) source excitation, delivering flexibility for high-demand operations.

Simplex and Redundant Architecture Options

To meet diverse requirements, the EX2000 Excitation Control System can be configured as:

• Simplex Architecture: A single control module interfaces with one power module, which includes a digital controller composed of four printed wire boards. This setup includes an optional independent protection module.
• Redundant Architecture: Dual-channel architecture with an integrated protection module for enhanced reliability, ideal for critical applications where uninterrupted operation is essential.

Advanced Digital Controller and Communication

The core of the EX2000's functionality is a digital controller that manages power distribution and maintains system stability. Key elements include:

• Local Area Network (LAN) Communication Utilizing the ARCNET protocol, this LAN supports seamless communication among modules, including the operator console (OC2000) and other controllers.
• Compatibility with Genius-based field I/O and Ethernet based devices, such as the Mark VI Turbine Controller and PC-based Control System Toolbox software, offers additional monitoring and control capabilities.

EX2000 Excitation Control System Components

The EX2000 system consists of essential components that enhance its regulatory functions and user experience:

• Main Processor and LAN Communication Card (LDCC): Manages network communication, control signals, and data processing.
• Programmer Module: Includes a keypad and display for user interaction and system configuration.
• Thyristor Firing Circuit Control: Controls excitation via thyristor, managing several regulatory functions, including automatic voltage regulation and field voltage/current limits.

Core Regulator Functions

The EX2000 provides comprehensive regulatory capabilities, including:

• Automatic Voltage Regulator (AVR)
• Field Voltage and Current Limit Regulators
• Volts/Hertz Limit Regulator
• Reactive Current Compensation
• Under-Excitation Limit Regulator

Built-In Diagnostic and Simulation Tools

The EX2000 comes with diagnostic panels and a sophisticated Operator Control Simulator that offers real-time feedback and insights. The system's Control Simulator emulates field and generator conditions, allowing operators to Test the system with simulated feedback, Display exciter voltage, current, and generator voltage on the OC2000 console, and Train operators in startup, troubleshooting, and calibration procedures in a safe, simulated environment

Operator Console 2000

The Operator Console 2000 (OC2000) connects to the exciter via a controller, providing operators with an intuitive interface. It features a sealed membrane keyboard, dual 40-character configurable displays, 32 function keys, and a 16-button numeric/function keypad with a 10-character diagnostic display. Each button and display can be customized, allowing familiar process terminology to appear, along with feedback visuals on the display windows. The OC2000�s multiplexing capability adds flexibility by enabling every key and display to perform multiple functions. Mode keys can be programmed to adjust the functions of other keys dynamically. Console setup and function assignments are managed using the Control System Toolbox, a Microsoft Windows-based tool for configuring modules, tasks, and options to meet specific application requirements.

World of Controls has the most comprehensive spare parts for the GE EX2000 Excitation Control System. Please contact WOC if you require further details.

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Frequently Asked Questions

What functionalities does the EX2000 Excitation Control System offer?
EX2000 Excitation Control System features a variety of regulatory functions, such as automatic voltage regulation, field voltage/current limit regulation, volts/hertz limit regulation, reactive current compensation, and under-excitation limit regulation. It also includes built-in diagnostic display panels and an operator control simulator.

Can the operator interface be customized?
Yes, the Operator Console 2000 (OC2000) offers significant customization options. Buttons and displays can be named using familiar process terminology, and the console can be configured to display various functions dynamically, enhancing user experience and feedback.

How is the console configured?
Configuration and function assignments for the OC2000 are done using the Control System Toolbox, a Microsoft Windows-based tool that allows users to set up modules, tasks, and functionality according to their specific needs.

What are the two digital controller options for the EX2000 Excitation Control System?
The EX2000 offers two digital controller options- a thyristor-based controller and an Integrated Gate Bipolar Transistor (IGBT)-based controller. Each option is designed to meet different operational demands, with the IGBT controller being particularly noted for its efficiency and fast switching capabilities.