Description
Technical Parameters
Product Introduction
The Emergency Turbine Protection (YPROS1A) pack and associated terminal boards provide an independent backup overspeed protection system. They also provide an independent watchdog function for the primary control. A typical protection system consists of three TMR YPRO I/O packs mounted on separate SPRO terminal boards. A cable, with DC-37 connectors on each end, connects each SPRO to an emergency trip board, TREG. An alternate arrangement places three YPRO I/O packs directly on TREA for a single-board TMR protection system.
Technical Specifications
|
Manufacture |
General Electric(GE) |
|
Model |
IS220YPROS1A |
| Part Number | IS220YPROS1A |
|
Description |
Mark YPRO Backup Turbine Protection
|
|
Origin |
USA |
|
Dimension |
18*18*7cm |
|
Weight |
0.32kg |
Product Details
Mark VIeS control is designed with a primary and backup trip system that interacts at the trip terminal board level. Primary protection is provided with the YTUR pack operating a primary trip board (TRPG, TRPA). Backup protection is provided with the YPRO I/O pack operating a backup trip board (TREG, TREA).
YPRO accepts three speed signals, including basic overspeed, acceleration, deceleration, and hardware implemented overspeed. It monitors the operation of the primary control and can monitor the primary speed as a sign of normal operation. YPRO checks the status and operation of the selected trip board through a comprehensive set of feedback signals. The pack is fully independent of, and unaffected by, the controller operation. YPRO modules are complex in their configuration and operation and should only be installed and configured by qualified personnel familiar with turbine protection systems.
SIL Capability:
•SIL 2 in HFT = 0 architectures (1 out of 1, 2 out of 2).
•SIL 3 in HFT = 1 architectures (1 out of 2, 2 out of 3).
In the ToolboxST application, when the YPRO variable Speed1 is configured for either StaleSpdEn or SpeedDifEn (enabled),it must be connected to the controller's speed signal.
The YPRO I/O pack provides an additional LOP by monitoring the operating health of the system controller. The following rules apply if this protection is used:
•Simplex main controller with TMR backup protection is supported by all Mark VIeS backup trip boards (TREG and TREA). In this configuration, one port on each of three YPRO I/O packs connects to the controller IONet.
•Dual Main Controllers with TMR backup protection is supported by all Mark VIeS backup trip boards (TREG and TREA). This configuration uses the dual controller TMR output standard network connection. The first YPRO pack has one network port connected to the R IONet. The second pack has one network port connected to the S IONet. The third pack has one network port connected to the R IONet and one network port connected to the S IONet. The third YPRO monitors the operation of both controllers.
•Triple Main Controllers with TMR backup protection is supported when operating with a TMR main control (2 out of 3). All Mark VIeS backup trip boards (TREG and TREA) support this configuration. The network configuration connects the first YPRO pack to the R IONet, the second to the S IONet, and the third to the T IONet.
Terminal board
TREA Turbine Emergency Trip
The Aeroderivative Turbine Emergency Trip (TREA) terminal board works with YPRO turbine I/O packs. The inputs and
outputs are as follows:
•Nine passive pulse rate devices (three per X/Y/Z section) sensing a toothed wheel to measure the turbine speed
•Jumper blocks that enable one set of three speed inputs to be fanned to all three YPRO I/O packs
•Two 24 V dc (S1A, S3A) or 125 V dc (S2A, S4A) TMR voted output contacts to trip the system
•Four 24 to 125 V dc voltage detection circuits for monitoring trip string
For TMR systems, signals fan out to the JX1, JY1, and JZ1 DC-62 YPRO connectors
TREG Turbine Emergency Trip
The Gas Turbine Emergency Trip(TREG) terminal board provides power to three emergency trip solenoids and is controlled by the YPRO. Up to three trip solenoids can be connected between the TREG and TRPG terminal boards. TREG provides the positive side of the 125 V dc to the solenoids and TRPG provides the negative side. YPRO provides emergency overspeed protection, emergency stop functions, and controls the 12 relays on TREG, nine of which form three groups of three to vote the inputs controlling the three trip solenoids.
SPRO Emergency Protection
The Emergency Protection (SPRO) terminal board hosts a single YPRO pack. It conditions speed signal inputs for the YPRO and contains a pair of potential transformers (PTs) for bus and generator voltage input. The DC-37 pin connector adjacent to the YPRO pack connector links the SPRO with a Mark VIeS trip board.