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TRANSMISSION & INDUS TRANSMISSION & INDUS TRANSMISSION & INDUS TRIAL SYSTEM ANALYSIS Transient Stability
Transient Stability
Transient Stability



Power Flow
CYMSTAB, Transient Stability
CYMSTAB is the PSAF simulation module dedicated to simulating electromechanical transients in three phase
electric power systems. It features an extensive library of equipment and controller models, the capability to include
user-defined controls, a very flexible user-interface and powerful graphics.
Analytical Capabilities
CYMSTAB utilizes the simultaneous implicit trapezoidal integration solution technique for network, machine and
controller equations. The program supports the capability to test the step response of controllers and User Defined
Modeling for system equipment and controllers.
CYMSTAB includes an extensive library of equipment
such as:
Turbo and salient pole generators
IEEE Excitation Systems including saturation
modeling.
Power System Stabilizers.
Governor models comprising hydraulic, thermal,
Diesel, and Gas Turbines.
Static Var Compensators.
Under-Voltage, Under-Frequency and Frequency
Droop relays.
Power Swing and Impedance relays.
Induction motor models with frequency dependent
modeling.
In addition to the above built in library the program includes a comprehensive Library of User-Defined excitation
systems, governors and stabilizers.
LLL, L-G, LL and LL-G Fault application and removal
Line switching and line re-closing.
Single Pole re-closing including line charging effects.
Load shedding and Load increase.
Generation shedding.
Disconnection of Lines, cables and transformers.
Frequency-dependent modeling.
Networks with multiple frequencies.
HVDC modeling.
Possibility to monitor specific equipment during the
simulation.
Generalized Load modeling at individual bus bars or
throughout the system.
Disconnection of static Var Compensators.
Addition and Removal of shunts.
Direct on-line or assisted induction motor starting
and stopping.
Automatic validation of maneuvers sequencing.
Verification of equipment and controller data
Series capacitors and controls.
Possibility to vary the integration step during the
simulation.
Possibility to interrupt the simulation temporarily
and restart.
Range checking for controller settings and
simulation parameters.
Synchronous motor starting.
Harmonics
Voltage Stability
Short-Circuit
And more...
TRANSMISSION & INDUS
TRANSMISSION & INDUS
TRANSMISSION & INDUS
TRIAL SYSTEM ANALYSIS
TRIAL SYSTEM ANALYSIS
TRIAL SYSTEM ANALYSIS


CYMSTAB features a unique ability to supplement the already wide array
of hard-coded models for system equipment and controllers, by providing
the user the additional possibility to model any desired control system by
virtue of User-Defined modeling.
The User-defined modeling approach rests on the premise of interpreting,
at run time, the User-defined equations.
The program is provided with an extensive Library of elementary functions
and building block controls to model any control scheme, including
system-wide operations.
User Defined Modeling
CYMVIEW, Simulation Results Management
CYMVIEW, is common to all simulation modules that generate any kind
of charts. CYMVIEW is capable of managing the outputs of different
modules.
Real-time plotting of variables.
Complete system-wide tabular reports generated with complete
echo of the data used for the simulation.
Plotting of the variables specified in the User-defined models.
Capability to compare results from different simulations.
Capability to customize Units, Labels and Plots appearances.
Algebraic manipulation of plots and variables during plotting.
Unlimited number of graphs.
WECS, Wind Energy Conversion Systems
CYMSTAB now includes extensive modeling capability of Wind Energy
Conversion Systems (WECS) dynamics. The advanced solution algorithms
provide the user with the necessary tools to carry out power system studies
comprising wind farm installations.
Three types of wind-turbine generation systems are supported, namely
WECS-IG, for induction generators directly coupled with the AC grid.
WECS-HVDC, for induction generators connected to the AC grid
through a Voltage-Source Converter (VSC) DC link.
WECS-DFIG, for doubly fed induction generators, featuring not only a
direct stator connection to the AC grid but, also, a VSC-based DC link
rotor energy recovery system, for variable turbine speed operation.
Wind modeling, accounting for cut-in and cut-off capability
Two-mass drive train turbine-generator shaft model.
Blade Pitch control.
© Copyright CYME International, August 2005
U.S.A. & Canada
1-800-361-3627

www.cyme.com
info@cyme.com
Canada & International
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Tel. (450) 461-3655
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Tel (781) 229-0269
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