GE EX2100e 35 A and 120 A Regulator Systems

GE EX2100e 35 A and 120 A Regulator Systems

INTRODUCTION

The EX2100e Excitation Control Regulator system is GE’s most recent state-of-the-art control system for steam, gas, or hydro generators for both new and retrofit units. Control hardware and software design is closely coordinated between GE’s system and controls engineering to ensure delivery of a true system solution. Integration is seamless between Excitation Control systems, Turbine Control systems, Static Starter Control systems, Integrated Control Systems (ICS), and the Human-machine Interface (HMI). For stand-alone retrofit applications, integration with customer distributed control systems (DCS) through serial or Modbus® Ethernet is supported. This document specifically addresses applications for the 35 A and 120 A (nominal) series of EX2100e Control Regulator systems.

Control Hardware

The EX2100e Regulator system is available in several configurations to provide control flexibility for Thyristor and Regulator systems. For small Regulator systems, two pulse-width modulated (PWM) power converter modules use Insulated Gate Bipolar Transistors (IGBT) to provide up to 35 A or 120 A nominal output. These systems can support the following applications:

• Saturable Current Transformers / Power Potential Transformers (SCT/PPT) regulator 

• Brushless exciter regulator 

• Direct current (dc) rotating exciter regulator

The EX2100e Regulator system supports Ethernet local area network (LAN) communication to the following:

• Turbine controls and ICS, HMI, Proficy*-based Historian, Programming Interface (PI-based) Historian, Onsite Monitoring System (OSM), and COI 

• Extended I/O modules using the Ethernet Global Data (EGD) protocol 

• Customer DCS through Ethernet or Modbus Ethernet remote terminal unit (RTU) 

• ToolboxST* application 

• GE Onsite Support* for monitoring and diagnostics

Control Software

The EX2100e control software supports high performance and helps the customer and field engineers understand, install, commission, tune, and maintain the excitation control system. The exciter software is configured and loaded from the ToolboxST application and resides in the controllers. The software is represented on the ToolboxST Component Editor screen by control blocks that are linked together to display the signal flow.

The output of the software transducer system includes the following:

• Generator voltage 

• Generator active current (average in phase with watts) 

• Generator reactive current (average in phase with reactive power, VARs) 

• Generator frequency (current) 

• Slip (signal representing the change in the rotor speed)

The transducer system uses the output to calculate the following:

• Generator power and VARs 

• Magnitude of generator flux (V/Hz) 

• Phase angle and power factor

Physical Characteristics

Enclosure：NEMA 1/IP20 or IP21 freestanding, indoor metal cabinet, floor mounted Optional IP54 available

Cabinet dimensions (W x H x D)：Standard cabinet: 800 x 2290 x 830 mm (32 x 90 x 32.5 in) 35 A Simplex cabinet: 610 x 2286 x 508 mm (24 x 90 x 20 in)

Paint：Exterior: ANSI®-70 (light gray) (other colors available) Interior: Galvanized steel

Environmental Characteristics

Ambient temperature：0 to 40°C (32 to 104 °F); current derating at 50°C (122 °F)

Ac input range：35 A: 90-280 V rms, nominal 120 A: Up to 480 V rms

Ac input frequency：480 Hz maximum

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