Invensys behind critical generator control system upgrade at packaging mill
INVENSYS Process Systems has been selected by Boise Cascade to supply Triconex triple modular redundant (TMR) technology for upgraded turbine generator controls at Boise’s DeRidder packaging and newsprint mill .
Invensys will supply new controls for a GE 62 MW captive steam turbine generator, which is a critical power generation source for pulping and papermaking at the mill. Located in Louisiana, the mill produces approximately 555,000 tons of linerboard and 448,000 tons of newsprint annually.
Invensys will supply a Triconex TS-3000 system for an integrated steam turbine governor and generator exciter control system for the GE back pressure, single extraction turbine. The control solution also includes the Trilogger event logging and playback station, Wonderware InTouch human machine interface (HMI) software, and a redundant current-sharing Eurotherm -based automatic voltage regulator. These elements comprise a turnkey control retrofit that replaces outdated generator control equipment.
The new controls will help Boise Cascade optimise the performance of this critical generation asset through high availability and reliability.
The TS-3000 combines driven equipment control with driver equipment control, and reduces nuisance trip rates to less than one per hundred years.
To capture, store, retrieve and analyse all operating data from the turbine generator controls, Invensys will supply the Trilogger high speed, high-resolution control event recording solution. Trilogger is designed to match the TS3000 high-frequency control scan rates, allowing high resolution data access and analysis for all data points relating to the control of Boise’s captive turbine generator. Trilogger software modules allow full on-line event logging, off-line playback for data analysis and presentation, and remote data viewing and recording control.
Operator interfaces for the new turbine controls will be based on Wonderware’s InTouch human machine interface (HMI) software. This software provides more user-friendly process visualisation, operation, and easier access to performance and operational data.
TMR technology integrates three isolated, parallel control systems and diagnostics in one system, which uses two-out-of-three voting to provide high-integrity, error-free, uninterrupted process operation. The TMR architecture eliminates any single point of failure and enables on-line maintenance and programming downloads, self-calibration and fault localisation.
6-Feb-2006