EX2100 Excitation Control system (referred to as EX2100 or exciter) is a sophisticated system designed to produce field excitation current. This current is essential for controlling generator AC terminal voltage and reactive volt-amperes. EX2100 is a full static excitation system suitable for use with both new and retrofitted steam, gas, and hydro turbines.
The EX2100 Excitation Control system features a flexible modular design that allows it to be assembled in various configurations to provide a wide range of output currents. Users can select from multiple levels of system redundancy based on their operational needs. The system supports power input from a potential, compound, or auxiliary source, and offers configurations such as:
Power for the EX2100 is drawn from a power potential transformer connected directly to the generator terminals or from an excitation transformer linked to an auxiliary bus. The system utilizes generator line current and stator output voltage as primary feedback mechanisms, ensuring that the controlled output to the exciter field includes both DC voltage and current.
EX2100 Excitation Control system architecture supports Ethernet LAN (Unit Data Highway) communication, enabling integration with other GE equipment. This includes seamless communication with the GE Control System Toolbox (toolbox) for configuration purposes, as well as connectivity to turbine control systems, LCI Static Starters, and Human-Machine Interfaces (HMIs).
In configurations utilizing a potential source, the secondary output of the power potential transformer (PPT) is connected to the input of a three-phase full-wave inverting thyristor bridge. This inverting bridge provides both positive and negative forcing voltages, which are critical for optimal system performance. The negative forcing capability facilitates a rapid response during load rejection and de-excitation scenarios.
The EX2100 utilizes microprocessor-based controllers (ACLA and DSPX) to execute the exciter control code. The system software is composed of various modules (blocks) that are integrated to create the necessary functionality. Key features of the software include:
World of Controls has the most comprehensive spare parts for the GE EX2100 Excitation Control System. Please contact WOC if you require further details.
What is the purpose of the inverting thyristor bridge in the system?
The inverting thyristor bridge converts the power input from the potential source into both positive and negative forcing voltages, optimizing performance by enabling rapid response for load rejection and de-excitation.
How is the EX2100 Excitation Control system beneficial for turbine operations?
The EX2100 enhances generator stability and performance through precise voltage regulation and flexible configurations that cater to various operational requirements, thus improving overall efficiency in power generation.
Is the EX2100 suitable for both new and existing installations?
Yes, the GE EX2100 Excitation Control System is designed to be adaptable for both new installations and retrofitting on existing steam, gas, and hydro turbine generators.
