GE DS200EXDEG1A EX2000, De-Excitation Control Card

الوصف

The GE DS200EXDEG1A is a De-Excitation Control Card for the GE EX2000 Excitation System. This specialized board is a critical safety component responsible for rapidly removing stored energy from a synchronous generator’s field, which is a key part of both normal and emergency shutdowns.

Technical Breakdown ⚡️

The name of the card provides a clear breakdown of its function:

• De-Excitation: When a generator is running, its rotor’s magnetic field is “excited” by a large DC current. This field is what enables the generator to produce voltage and power. In a controlled or emergency shutdown, this magnetic field must be collapsed quickly to protect the generator from damage and prevent it from continuing to produce voltage. This card initiates and controls that process.
• Control Card: The DS200EXDEG1A contains the necessary logic and circuitry to manage the de-excitation process. It works by firing a silicon-controlled rectifier (SCR) to divert the stored energy from the generator field to a dissipation circuit, safely collapsing the magnetic field.
• EX2000 System: The card is an integral part of the GE EX2000 Excitation System. This system is a high-speed, digital control platform used to regulate the voltage and reactive power of large synchronous generators in power plants. The de-excitation card is part of the system’s comprehensive protection and safety scheme.

In essence, the DS200EXDEG1A acts as the “emergency brake” for the generator’s magnetic field. Its ability to quickly and safely de-energize the field is vital for protecting the generator and other plant equipment, especially in the event of a fault or a rapid shutdown.

Key Features and Applications 🏭

Feature	Description
Safety Function	Provides a critical protection function by rapidly removing generator field energy.
Circuitry	Contains logic for SCR (Silicon Controlled Rectifier) firing and voltage protection components.
System Integration	Works in conjunction with other EX2000 modules to ensure a controlled and safe shutdown.
Robust Design	Built to handle the high voltages and currents associated with large generators.

This card is exclusively used in the GE EX2000 Excitation System, which is applied in power generation facilities to control the output of synchronous generators.