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IS200VPROH1BCD

IS200VPROH1BCD - Turbine Protection Board

IS200VPROH1BCD - Turbine Protection Board IS200VPROH1BCD - Turbine Protection Board

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SPECIFICATIONS

Part No.: IS200VPROH1BCD
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Number of channels: 8
Span: 0.3532 to 4.054 V
Temperature: -30 to +65 oC
Technology:Surface mount
Product Type: Turbine Protection Board
Availability: In Stock
Series: Mark VI

Functional Description

IS200VPROH1BCD is a Turbine Protection Board developed by GE. It is a part of the Mark VI control system. The Turbine Protection Board and its associated terminal boards (TPRO and TREG) constitute a robust and independent emergency overspeed protection system designed to safeguard the turbine from potential hazards. Positioned separately from the turbine control system, this protection system is comprised of triple redundant VPRO boards, ensuring reliability and redundancy in critical operations.

Features

  • Housed within the Protection Module, the VPRO board serves as the central component responsible for executing the emergency trip function. This board is engineered to swiftly respond to overspeed conditions and emergency stop commands, ensuring the safety and integrity of the turbine system.
  • Terminal Boards (TPRO and TREG): The TPRO and TREG terminal boards play pivotal roles in facilitating the connection and control of trip solenoids. TPRO is responsible for providing the positive side of the 125 V dc power supply to the solenoids, while TRPG supplies the negative side. These terminal boards form crucial links between the VPRO board and the trip solenoids, enabling effective coordination and control.
  • Emergency Overspeed Protection: The primary function of the VPRO board is to provide emergency overspeed protection, swiftly responding to excessive turbine speed conditions to prevent catastrophic failures.
  • Emergency Stop Functions: In addition to overspeed protection, VPRO also governs emergency stop functions, enabling prompt shutdown of the turbine in critical situations to mitigate risks and ensure personnel safety.

Operation

  • Trip Solenoids: The protection system accommodates up to three trip solenoids, which are interconnected between the TREG and TRPG terminal boards. These solenoids act as pivotal components in executing emergency shutdown procedures in response to overspeed conditions or other critical events.
  • Control Mechanism: board exerts control over the trip solenoids through the TREG terminal board. By orchestrating the activation of 12 relays on the TREG board, VPRO ensures precise and coordinated operation of the trip solenoids. Notably, nine of these relays are organized into three groups of three, facilitating a redundant voting mechanism to enhance reliability and fault tolerance.

 

Interface To Trip Solenoids


  • The interface to trip solenoids within the turbine control system is meticulously engineered to ensure seamless coordination between the primary trip interface from the controller and the EOS (Emergency Overspeed) trip interface from the protection module. This comprehensive trip system employs three separate, triple redundant trip solenoids, also known as Electrical Trip Devices (ETDs), to interface with the hydraulic components of the system, thereby ensuring reliable and efficient operation under diverse operating conditions.
  • Key Components and Operation:
    • Primary Trip Interface: The primary trip interface, integrated within the controller, serves as a critical link between the control system and the trip solenoids. It facilitates the transmission of trip signals and commands to initiate emergency shutdown procedures when necessary.
    • EOS Trip Interface: Complementing the primary trip interface, the EOS trip interface from the protection module provides an additional layer of safety and redundancy. This interface is specifically designed to respond to emergency overspeed conditions and trigger trip sequences to prevent catastrophic failures.
    • Triple Redundant Trip Solenoids: Three separate trip solenoids, each featuring triple redundancy, are employed to interface with the hydraulic components of the system. These solenoids play a pivotal role in executing trip commands swiftly and accurately, ensuring rapid response and effective mitigation of potential hazards.
  • Connection and Configuration:
    • Terminal Board Connection: The trip solenoids, or ETDs, are connected between the TRPG and TREG terminal boards within the system architecture. This arrangement facilitates seamless communication and control between the protection module and the hydraulic components, enhancing overall system integrity and reliability.
    • Feeder Configuration: A separately fused 125 V dc feeder is provided from the turbine control system for each solenoid. These feeders are responsible for energizing the solenoids during the run mode, ensuring that the system is primed for operation. In the event of a trip condition, the solenoids are promptly de-energized, triggering the necessary shutdown procedures to safeguard the turbine and associated equipment.
  • Functional Overview:
    • Run Mode Operation: During normal operation in the run mode, the trip solenoids are energized by the 125 V dc feeders, ready to execute trip commands if required. The primary and EOS trip interfaces monitor system conditions and stand ready to initiate trip sequences in response to predetermined criteria or emergency events.
    • Trip Mode Operation: In the event of a trip condition, such as overspeed or other critical anomalies, the trip solenoids are swiftly de-energized, triggering the shutdown sequence. This rapid response mechanism ensures prompt mitigation of risks and prevents potential damage to the turbine and associated equipment, safeguarding personnel and assets alike.

The WOC team is always available to help you with your Mark VI requirements. For more information, please contact WOC.

Frequently Asked Questions

What is IS200VPROH1BCD?
It is a Turbine Protection Board developed by GE under the Mark VI series.

What do the LEDs on the VPRO front panel indicate?
The LEDs on the front panel indicate the status of the board. A flashing green LED signifies normal operation (RUN), a solid red LED indicates a failure condition (FAIL), and an orange LED indicates a diagnostic alarm (STATUS).

What diagnostic checks does the board perform?
It conducts various diagnostic checks, including monitoring trip relay drivers, solenoid voltages, economizer relay drivers, and analog input limits. If any of these signals become unhealthy, a diagnostic alarm is triggered.

How are diagnostic signals managed on the board?
Diagnostic signals can be individually latched and then reset if they return to a healthy state. This allows for efficient monitoring and management of diagnostic alarms.

What information is stored in the ID device of terminal board connectors on TPRO and TREG?
The ID device contains essential information such as the terminal board's serial number, type, revision number, and plug location. If a mismatch is detected, a hardware incompatibility fault is generated.