The ABB TPS02 Infi 90 Turbine Protection Module is a critical component in turbine protection systems, designed to ensure the safe and reliable operation of turbines in various industrial applications. Below is a detailed overview of this module:

Overview

• Brand: ABB
• Model: TPS02 Infi 90
• Application: Turbine protection system

Key Features and Functions

1. Triple Redundancy: The TPS02 module employs a triple redundancy input system, which enhances reliability by utilizing a three-out-of-two protection logic. This means that if two out of the three modules detect a fault, the turbine will be tripped to prevent damage.

2. Online Testing: The module supports online testing capabilities, allowing for the verification of its functionality without the need to shut down the turbine.

3. Protection Functions:

   • Overspeed Protection (OSP): Monitors turbine speed and trips the turbine if it exceeds a set limit, typically 103% of the rated speed.
   • High-Pressure Ejector Control (EHC): Controls the high-pressure ejector system to ensure proper operation and safety.
   • Low-Pressure Trip (TRIP): Initiates a turbine trip if low-pressure conditions are detected, ensuring the turbine does not operate under unsafe conditions.
   • Power Imbalance (PLI): Compares the mechanical power input (e.g., steam flow) to the electrical power output (e.g., generator output) and trips the turbine if a significant imbalance is detected.

4. Communication: The TPS02 module communicates with the Infi 90 open control system via an expander bus. This allows for the transmission of turbine speed, power, and other critical parameters to the multifunction processor for monitoring and control.

5. Display and Indication: The module's panel displays turbine speed, power, power imbalance, and module status information during normal operation. It also allows for the input of trip setpoints and other parameters.

System Integration

• The TPS02 module is typically integrated into a turbine protection system that consists of three TPS02 modules and a terminal unit (TPSTU02) connected by cables.
• All functions related to electronic overspeed protection are monitored and executed by the modules and terminal unit, independently of the control system's data bus and multifunction processor.

Operation and Maintenance

• Operators can monitor turbine speed using the analog output signals from the terminal unit.
• In the event of a multifunction processor failure, operators can still maintain turbine control using the emergency manual function of the hydraulic servo module within the ETSI turbine control system.

Conclusion

The ABB TPS02 Infi 90 Turbine Protection Module is a highly reliable and versatile component that plays a crucial role in ensuring the safe operation of turbines. Its triple redundancy, online testing capabilities, and comprehensive protection functions make it an ideal choice for a wide range of industrial applications.