The document describes GE's ALSPA ControGen HX generator control and excitation system. It is designed to control medium and large generators up to 10,000 amps of field current. The system offers advanced functions like adaptive power system stabilizers to improve plant performance under varying conditions. It can seamlessly integrate with other automation systems using GE's Plant Integrator concept.

1. ALSPA®
ControGen™
HX
Generator Control and Excitation System
Innovative solutions and technology to increase efficiency, using
common technologies with Plant Integrator™
concept for seamless
integration or dedicated communication with third party systems.
Seamless integration
Taking advantage of its in-depth
knowledge of the power plant processes,
Automation and Controls, a part of
GE’s Industrial Solutions business,
has developed a comprehensive
control and instrumentation system,
providing modern operating control for
power plants: ALSPA®
.
ALSPA ControGen™
HX is GE’s latest
excitation system for the control of all
kinds of synchronous generators up to
10,000 Amps field current. It offers a wide
variety of innovative solutions to maximize
the efficiency of the power plant, as well
as customized solutions to meet your
specific requirements.
It shares common technologies with steam
and gas turbine governors and distributed
control systems for seamless integration.
GE
Industrial Solutions

2. GE's Industrial Solutions business is a subsidiary of the General Electric Company. The GE brand and logo are trademarks of the General
Electric Company. © 2015 General Electric Company. All other trademarks are the property of their respective owners. Specifications are
subject to change without notice.
11.15 GFA2096
GE
Industrial Solutions
2500 Austin Dr
Charlottesville, VA, 22911
1-800-433-2682 or 1-434-978-5100
www.geautomation.com
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High performance setup
Part of the ALSPA product line,
the ControGen HX belongs to the
automatic voltage regulator (AVR)
family used on heavy machine control
equipment. It is designed to manage
all types of excitation systems (static,
brushless, AC&DC exciters) and can
be applied to any power generation
application (steam, nuclear, hydraulic,
diesel and gas), from small units to
large production machines requiring
complex controls.
High performance
ALSPA ControGen HX offers a large
selection of advanced functions to
improve the performance of the entire
system (conventional PSS2A/2B,
advanced adaptive PSS, secondary voltage
regulation capabilities..). Taking advantage
of our emulation capacities to simulate the
overall working conditions of the power
plant, ALSPA ControGen HX can be set to
reach the most accurate performances.
Enhanced reliability
The scalable redundancy of the
controllers, power supplies, pulse
generating devices, and power bridges
makes the system tolerant to internal or
external failures and ensures continuous
operation under all circumstances.
Wide open
ALSPA ControGen HX is designed to
communicate with a large range of
distributed control systems (DCS) as well
as dedicated operator stations and local
operator terminals.
ALSPA ControGen HX is fully integrated
in the ALSPA family and can be easily
integrated with all ALSPA plant
automation solutions as part of the
GE Plant Integrator™
concept.
ALSPA ControGen HX is part of the GE
excitation systems family. It is designed
to control medium and large generators.
The ALSPA ControGen HX takes
advantage from over 45 years of know-
how and proven experience in design and
manufacturing of excitation systems.
Standard functions
• fully digital control loops (current
and voltage) based on a powerful
microprocessor allowing fast cycle
time treatment
• voltage, power factor, reactive power
regulation modes
• embedded power system stabilizer
PSS2A/2B according to IEEE
recommendation standard 421.2 421.5
• limitations:
- stator current
- over-excitation (ceiling, steady state)
- under excitation (leading VAR limit)
- voltage/frequency control (U/F)
• fully compliant with the ALSPA Plant
Integrator concept
• rotating diode monitoring
Advanced functions
• generator electrical braking
• excitation boosting (brushless exciter)
• wide open to communications and can
be controlled from distributed control
system, dedicated operator station,
local operator terminal or from
conventional panels
• current sharing capabilities for multi
parallel power bridges
• adaptive power system stabilizer (PSS)
• field flashing control
• bump-less transfer at controller and
rectifier level
• secondary voltage regulation capabilities
• high performing desensitized
voltage regulation
Adaptive PSS
Integration of a huge amount of volatile
renewables (solar photovoltaic, wind)
in power networks is becoming a great
challenge for grid operators and has
an important impact in the working
conditions of the conventional installed
base. Also, power system operation is
characterized by a wide range of operating
conditions, random load changes and
various unpredictable disturbances.
Conventional PSS are designed to have
fixed parameters derived from a linearized
model around a certain operating point
and thus cannot address important
changes in the network. GE’s adaptive
PSS tracks those network changes and
adapts the PSS parameters accordingly.
Whenever the network is changing,
GE adaptive PSS is efficient.
Conventional PSS 2A/2B answer on grid changes
Adaptive PSS answer on grid changes
FPO
FPO