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The GE DS2020ASSAG1 is a specialized module for the General Electric Mark V Speedtronic Turbine Control System and is used in AC2000G (AC drive) applications. Its official product description is AC2000G SRC.BRG.P ST (SCR Bridge and Turbine Control Module).
⚙️ Combined Functionality
The DS2020ASSAG1 performs a critical dual-role function within high-power industrial systems, particularly for prime movers like gas and steam turbines:
- SCR Bridge (SRC.BRG.P ST):
- It contains an SCR (Silicon Controlled Rectifier) Bridge, which is a high-power solid-state device assembly.
- The primary role of the bridge is power rectification and control, converting incoming AC power into a controlled DC output. This controlled DC power is essential for various high-power loads within the drive system, such as motor excitation or large hydraulic servo actuators that position the turbine’s fuel and steam valves.
- The SCRs allow for precise control over the power delivery by controlling the “firing angle” of the devices.
- Turbine Control & Protection:
- The module provides the programmable control interface that governs the operation and safety of the turbine.
- It includes a range of hardware inputs and outputs (I/O) necessary to manage the turbine’s auxiliaries and protective functions:
- Actuator Interface: Controls devices like servo valves (for fuel or steam flow).
- Safety Monitoring: Receives signals for critical protection features such as flame detection, overspeed events, loss of oil pressure, and overheating.
- Synchronization: Handles the interfacing required to synchronize the turbine-generator set with the external electrical grid.
✨ System Context and Features
- System Integration: It is part of the robust Mark V Series architecture and is designed to be fully compatible with a completely programmable turbine control system.
- Reliability: The module can be used with software voting in the Mark V system, indicating its use in high-reliability applications where Triple Modular Redundancy (TMR) is often employed to ensure continuous operation even if a component fails.
- Operating Conditions: This module is engineered to handle signals related to unusual operating conditions like loss of oil and overheating, triggering protection sequences when necessary.
This module is the original SCR Bridge and Turbine Control Module for the Mark V DS2020 series.
