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Upgrading
obsolete control systems is a cost-effective way to
improve the operation and
reliability of a gas turbine. ICS provides a range
of gas turbine controls specifically designed as a modern
retrofit replacement for the Analog and Electro-Hydraulic
control systems on all models of gas turbines. ICS
gas turbine controls utilize our field proven TC2000plus digital
control system for Turbine and integrated Turbine-Generator/Compressor
control, protection and sequential functions.
TC2000plus have been applied on most models of gas
turbines ranging
from 2MW to 100+MW, industrial and Aero-derivative
units.
TheTC2000plus overcomes the limitations
of Analog and Electro-Hydraulic governor and sequencing
equipment, while also implementing gas turbine control philosophies and operational enhancements.
The system provides high availability and reliability,
while digital electronics provide exact and permanent
calibration.
In addition to application specific TC2000plus configuration, most retrofit projects include
a full installation
engineering package, and may also include fuel system
and instrumentation upgrades and driven equipment
control upgrades. Each application is fully factory
tested
in the customer controller as a totally prefabricated
and tested unit before shipment.
TC2000plus Gas Turbine
Control Functions - Gas Turbine Control Application
The system automates all aspects of the turbine control,
protection, start-up, and shutdown sequences. It
interfaces directly to existing instruments, or
to new devices
supplied by ICS as part of a fuel system or instrumentation
upgrade;
Governing – Fuel
control / dual fuel control
Sequencing
- Fuel System
- Lube Oil System
- Starter
- MCC (Pumps, Fans,
Ventilation)
- Bleed Valves
- Auxiliaries, Water
Wash
- Dual fuel
- Generator Control
Protection
with Fail Safe Operation of Trip Devices
- Over-speed
- Over-temperature
- Loss of Flame
- Vibration
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Monitoring
HMI
operator interface / data historian
Vibration
Monitoring
Integrated
generator control
Integrated
compressor control
Remote
Monitoring and Communications |
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The TC2000plus control software is built
from a library of proven Functional Control Algorithm
modules. This allows
ICS to use standard governor code, ensure a high
standard, proven software, and reduced commissioning
time. Common
Functional Control Algorithms for gas turbine controls include;
Ignition
and startup control with Softstart
- Acceleration limiter
- Temperature rise limiterTemperature
control
Exhaust
(EGT)
- Gas Generator exit
- Blade path
- Combustion monitor
- Individual T/C monitoring
- True software correction
for inlet air temperature
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Turbine
Speed Control
Generator
load control
Generator
load limit
Generator
Stator Temperature Limiter
Turbine
cooldown |
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The TC2000plus is very flexible and it allows
for a high degree of customization, as required to
incorporate project specific unit or customer needs,
and features not possible with black box controllers.
Integrated Compressor Controls
For compressor drive applications ICS offers a non-proprietary
train solution with significant cost savings when compared
to traditional ‘black-box’ approaches.
Anti-surge control, compressor
control, and process
control functions are all tightly integrated with the
turbine control in a single high-performance open-architecture
controller.
Integrated Generator Controls
For generator drive turbines, ICS provides generator
controls, AVR and static
excitation systems, and
generator
protection modules as part of the same
package. The application of modern digital devices
provides exact control while serial communication
to the turbine controller provides a common database
with full status and trending of all systems on a
common reporting database to deliver seamless control
and protection in a clean upgrade package.
Control Upgrade
Benefits
- Reduces
costly shutdowns & avoids forced
outages - Increased reliability/availability
means
less downtime. Comprehensive data logging
and diagnostics of machinery
variables for troubleshooting and analysis
simplify preventative maintenance
- Improved
performance - Auto start-up/synchronization,
better speed/load control and AGC responsiveness,
with additional control schemes for plant
efficiency improvements
- Easier
Maintenance - Features like auto testing
of valve/trip systems facilitate maintenance
- Additional
Protection - Automatic soft start-up and shutdown
sequences reduce thermal and
dynamic stresses on thermal stress on blades and combustion parts.
Monitoring of turbine devices and new
instrumentation adds protection
- Plant
Control Integration – TC2000plus communication to DCS/RTU/IEC devices using industry
standard protocols
- Optimizes
output – By
removing operation limitations due to control
problems,
the system provides precise
digital control of the turbine in all
operating modes and can allow more efficient
operation
of the turbine/plant
- Reduced
training and spare parts costs - The system
is easy to use and requires minimal
training to operate. Non-proprietary hardware spare parts and available
from multiple sources.
- Eliminates
Obsolete systems
- Comprehensive
upgrade options – ICS
provides a comprehensive range of retrofit
upgrade package solutions for steam turbine valve
actuators, excitation/AVR,
generator protection systems,
instrumentation and monitoring provides as part
of
an integrated upgrade
package
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