DS200GASCF1AFE - General Electric Software PROM Set

SPECIFICATIONS

Part Number: DS200GASCF1AFE
Manufacturer: General Electric
Series: Mark V
Product type: General Electric Software PROM Set
Availability: In Stock
Country of Manufacture: United States (USA)

Functional Description

DS200GASCF1AFE is a General Electric Software PROM Set designed and developed by GE. It is a part of the Mark V control system. PROM sets help ensure the proper and reliable functioning of the control system and are an integral part of its design.

Power Load Unbalance

The Power Load Unbalance (PLU) module is a crucial component employed in the control and protection of large steam turbines. It serves the specific purpose of safeguarding the turbine against potential overspeed situations that can occur during load rejection events. Here's a comprehensive explanation of the Power Load Unbalance module:

• Purpose of the Power Load Unbalance (PLU) Module: The PLU module is an essential feature utilized in the context of large steam turbines. Its primary objective is to provide protection against overspeed conditions that may arise during load rejection scenarios.
• Identifying Mechanical and Electrical Power Unbalance: The PLU option actively monitors the balance between mechanical power and electrical power within the system. It assesses the equilibrium between the two forms of power to ensure stable turbine operation.
• Response to Load Rejection Events: When the PLU module detects an unbalance between mechanical and electrical power, it initiates specific actions to prevent the turbine from entering an overspeed condition. During load rejection events where there is a rapid decrease in load on the turbine, there is a potential for the turbine to accelerate quickly. The PLU function responds to this by causing rapid closing actions of the Control Valve (CV) and Intercept Valve (IV). These actions are designed to counteract the rapid acceleration and maintain safe operating conditions.
• Exclusion of Stable Fault Conditions: The PLU module is intelligent and does not actuate the valves under stable fault conditions that are self-clearing. For example, in cases of grid faults that resolve themselves without intervention, the PLU function remains inactive.
• Redundant Design for Reliability: The PLU module is designed with redundancy in mind to ensure the utmost reliability. It consists of three sets of identical boards, namely the U, V, and W. Each of these sets has its dedicated power supply and processor, enhancing the system's resilience.

Power Load Unbalance (PLU) module is a vital safety feature in the operation of large steam turbines. It constantly monitors the balance between mechanical and electrical power and takes swift action in load rejection situations to prevent overspeed events. Its redundant design and selective response to fault conditions contribute to the overall safety and reliability of the turbine control system.

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FREQUENTLY ASKED QUESTIONS

What is DS200GASCF1AFE?
It is a General Electric Software PROM Set designed and developed by GE

How does the PLU module detect potential overspeed situations?
The PLU module looks for an unbalance between mechanical and electrical power within the turbine system to identify conditions that may lead to overspeed.

What specific actions does the PLU module take during load rejection events to prevent overspeed?
The PLU module initiates rapid closing actions of the Control Valve (CV) and Intercept Valve (IV) to counteract the potential for rapid turbine acceleration during load rejection.

Does the PLU module respond to all fault conditions, or are there exceptions?
The PLU module is designed to be selective in its response. It does not actuate the valves under stable fault conditions that are self-clearing, such as grid faults.

What is the redundancy design in the PLU module, and why is it important?
The PLU module is designed with redundancy, consisting of three sets of identical boards (U, V, and W), each with its own power supply and processor. Redundancy is essential for system reliability and ensures that the module can continue functioning in case of a component failure.