CYME’s Power Systems Analysis Framework
(PSAF) is a comprehensive suite of integrated software programs that perform the simulations and
analyses of transmission or industrial electrical systems as needed by the electrical engineers.
A wide selection of network equipment and controllers is supported by a built-in database that
contains industry standard equipment characteristics. Every type of equipment features more than
one modeling possibility depending on the purpose and extent of the simulation to be conducted.
PSAF offers both graphical and tabular data entry modes, user-preferred single-line diagram drawing
options and sophisticated facilities for reporting, plotting and customizing the simulation reports
Deploying PSAF brings significant advantages in performing the planning, design and problem-solving
activities related to the assessment, improvement and maintenance of electrical power systems.
PSAF is directly applicable to both utilitytype and industrial three-phase electric power systems.
- Power flow for normal operating conditions and “what-if’ scenarios.
- Short circuit calculations and protection settings.
- Breaker ratings.
- Arc flash hazard calculations.
- Optimal power flow.
- Voltage stability/Modal analysis.
- Harmonic analysis.
- Transient stability under normal operatingconditions such as transient motor starting andload
transfer.
- System dynamics under abnormal operatingconditions such as bus fault and line tripping.
- Transmission lines parameters calculations insequence or phase domain, with modal analysis and
frequency-dependence modeling capability.
- Underground cable parameters calculations.
CYMFLOW-Power Flow Analysis
Dedicated to power flow analysis in three-phase electric power networks, it is equipped with powerful
analytical options and alternative solution techniques. CYMFLOW utilizes state of the art sparse
matrix/vector methods and multiple solution algorithms: full Newton-Raphson, fast Decoupled (with or
without constraints), and Gauss-Seidel. Some of the CYMFLOW capabilities are:
• Analyze networks with thousands of buses and branches.
• Multiple swing buses allowed.
• Automatic swing bus selection for isolated subsystems.
• Simultaneous solution for islanded networks.
• Switchable shunt element.
• Generalized load modeling, including constant power, impedance and current.
• Representation and control of DC lines.
• Wind Energy Conversion Systems (WECS).
• Modeling and representation of FACTS devices (UPFC and STACOM).
• Transformer inrush currents.
• Color coding on the network one-line diagram of overloaded equipment and buses with voltage
violations.
CYM-AC Contingency
The AC CONTINGENCY operates in conjunction with CYMFLOW, for power flow related contingency analysis.
The analytical approach used is the same as CYMFLOW; i.e. the contingency analysis is performed using
full AC power flow solutions (no DC approximations). The module features the sequential solution of
all contingencies in a single run. The contingency module is structured so that an unlimited number of
“what-if” scenarios can be included in a given contingency study. All contingency-related
system modifications refer to the base case network single outages and/or multiple
outages/modifications can be concurrently defined at will to represent an adverse contingency analysis
scenario such as:
• Modify loads globally, individually or by zone.
• Modify generation globally, individually or by zone.
• Connection and disconnection of branches.
• Shunt modification.
• Addition and removal of induction and synchronous motors.
• Connection and disconnection of buses.
CYM-Motor Start
The CYM-Motor Start Analysis Module operates in conjunction with CYMFLOW and is dedicated to
simulating the effects of induction and synchronous motor starting in three-phase electric
power systems. This module is a reliable and easy to use tool for assessing system voltage
dips and acceleration times of induction motors, using a variety of starting methods.
• Induction motor starting.
• Synchronous motor starting.
• Ten starting methods supported, including soft motor start, VFD, auto transformer, etc.
• Detailed mechanical load model based on manufacturer data curves or with the equation of load
torque versus speed.
• In the absence of detailed information, the module includes support functions for deducing the
induction motor equivalent circuit for single rotor, double rotor or deep bar rotor induction motors.
Electrical Equipment Parameter Estimation
PSAF is capable of suggesting typical data for the system
equipment. These estimating functions account for a wide array of industry manufacturing practices,
and respect the recommendations outlined in both North American and International calculating
guidelines.
This capability is very useful when detailed information about lines or cables is not available.
Transmission line models are defined by their geometrical
line configurations. Transposed and/ or full three-phase un-transposed models including frequency
dependency are supported for single or double circuit lines, with solid or tubular conductors, multiple
conductors per phase and multiple neutral wires (segmented or not).
Underground cable constants are calculated single and/or three-core cables with
either sheath or ground return.
To simulate fault conditions in three-phase electric power systems. User-friendly data entry, a
multitude of reports and flexibility in applying all industry-accepted standards are features that
make CYMFAULT an indispensable tool for these very common and important system studies.
CYMFAULT adheres to North American ANSI C37.5, ANSI C37.010, ANSI C37.13 and International IEC-60909
guidelines. It also supports conventional short-circuit studies without reference to any particular
standards.
• Series faults (one-phase open, two-phase open and threephase series unbalance).
• Separate network reduction for ANSI X/R ratios.
• Arcing faults through user-defined fault impedance.
• Mutual coupling in zero sequence.
• Interrupting device adequacy evaluation.
• Automated sliding fault option on a transmission line and/or cable.
• System-wide voltage, current and machine contribution reports (phase and sequence values).
ANSI Short-- Circuit Studies
CYMFAULT adheres to North American ANSI C37.5, ANSI C37.010, ANSI C37.13 for all duty types that are
of interest to industrial fault studies. Duty types supported include: time delayed, contact parting,
closing / latching, low voltage circuit breaker.
IEC Short-- Circuit Studies
CYMFAULT adheres to the international IEC-60909 guidelines and supports all four types of fault
currents that are of interest to industrial fault studies. Duty types supported include: initial
short-circuit current (I"k), maximum asymmetrical fault or peak current (Ip), breaking fault
current (Ib), steady state fault current (Ik).
CYMFAULT/CYMTCC Interface
CYMFAULT includes an interface module to our Protective Device Coordination Program CYMTCC. This
interface provides CYMFAULT users with full access to the complete library of over 5000 protective
devices available in the CYMTCC program.
The user simply has to define the coordination path of the feeder on the one-line diagram of PSAF
and export to CYMTCC. CYMTCC will automatically generate the Device Time / Current curves for any
device setting adjustments along with the selected feeder one-line diagram.
CYMBREAK - Breaker Ratings
CYMBREAK checks the validity of the current breaker size, and is designed to execute the appropriate
simulation for high, medium or low voltage circuit breaker according to either ANSI or IEC standards.
The CYMBREAK engine allows the user to specify the breaker with information such as rated voltage,
short circuit currents, temperature, etc. It is also possible to specify the breaker configuration
arrangement such as 2, 1½, ring, etc. Then it determines if it is correctly sized in a steady
state context or during a short circuit. Based on the breaker configuration, simulations are
automatically performed on the worst system arrangement for each performed check.
Arc Flash Hazard
This module is primarily designed to analyze and promote the electrical safety for employees working
on or near electrical equipment. It computes the necessary parameters required to assess the risk level
and adopt the adequate safety procedures, and complies with industry recognized standards and methods
for performing ARC Flash Hazard calculations namely: the Electrical Safety Requirements for Employee
Workplaces (NFPA-70E-2004) and the Institute of Electrical and Electronic Engineers (IEEE-1584- 2002).
The module facilitates the calculation of arc flash hazards in different types of equipment in various
power systems. The program generates reports a variety of reports including labels that can be printed
directly on ARC Flash Hazard weatherproof warning stickers.
CYMSTAB is the PSAF simulation module used to simulate 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.
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 (UDM) for system equipment and controllers.
CYMSTAB features a large library of pre-defined models for network equipment and control systems
that includes:
• 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. Some of the analytical
capabilities of CYMSTAB are:
• 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.
• Direct on-line or assisted induction motor starting and stopping; synchronous motor starting.
• Possibility to vary the integration step during the simulation.
• Frequency-dependent modeling.
• Networks with multiple frequencies.
• HVDC modeling.
• Generalized load modeling at individual bus bars or throughout the system.
• Series capacitors and controls.
Wind Energy Conversion Systems (WECS)
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. Wind-turbine generation systems supported include:
• 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.
Robust User Defined Modeling
In addition to its built-in library, the program includes a comprehensive Library of User-Defined
excitation systems, governors and stabilizers.Virtually any schematic diagram of Laplacedomain transfer
functions can be created using our User-Defined Modeling functionality. With UDM it is also possible to
perform manoeuvres (like stopping a motor) based on network conditions, rather than at fixed times.
The PSAF User Defined Modeling functionality is a robust, field-proven capability with which the
engineer can define the components of the network and their functions with the optimum precision that
yields to more accurate simulation results.
CYMVSTAB performs the voltage security assessment of power systems. In planning and operating today’s
stressed power systems, the ability to maintain voltage stability has become a growing concern. CYMVSTAB
is designed to meet this challenge by assessing the ability of the power system to maintain stable
voltages under different contingencies and loading conditions.
Power system voltage instability is related to the lack of reactive power resources in the network. This
is very similar to frequency instability in transient stability studies for systems that do not have
sufficient spinning reserve. Many aspects of voltage stability problems can be effectively analyzed with
the Steady state or Static Power Flow based domain for a specified operating condition of the power
system.
CYMVSTAB offers the user the same common format as our Power Flow Program CYMFLOW for entering the
network data,defining the study parameters, report options and solving the network.
The program assesses the voltage stability of a network by means of the two most common static voltage
stability analysis techniques.
• P-V Analysis (P-V Curves)
• V-Q Analysis (V-Q Curves)
All curves of monitored variables can be exported to CYMVIEW, which is capable of managing the outputs
of different modules and storing the results for any number of simulations generated by CYMVSTAB.
Modal Analysis
In addition to the voltage stability analysis techniques, there is a need for analytical tools capable
of predicting voltage collapse in complex networks, accurately quantifying stability margins, power
transfer limits, identifying voltage-weak points and areas susceptible to voltage instability. The
voltage stability module CYMVSTAB can identify the contributing factors and sensitivities which in
turn provide insight into system characteristics that are key elements for the development of remedial
actions in the network.
CYMVSTAB has the unique feature that for both PV and VQ approaches, the modal analysis is applied at
each operating point to determine the voltage stability critical areas by identifying the ten buses
contributing most to each identified mode of operation.
CYMHARMO- Harmonic Analysis
CYMHARMO is designed to perform harmonic penetration analysis in electric power systems. It features
both single phase and full three-phase modeling capabilities. It can flexibly and easily be applied
to utility-type grids, industrial power systems and distribution feeders of any configuration.
CYMHARMO utilizes state of the art sparse matrix/vector methods with a three-phase nodal admittance
network matrix representation. The program obtains from CYMFLOW the fundamental frequency current and
voltage system profile for harmonic distortion calculations and waveform display.
• Phase or sequence analysis.
• Driving point and transfer point frequency scanning analysis.
• Voltage and current harmonic distortion.
• Calculation of telephonic indices (TIF, IT, etc.).
• Sensitivity analysis.
• System equivalence.
• Noise-to-ground analysis.
• Inductive coordination analysis.
• Communication interference analysis with slanted-exposure power circuits.
• Harmonic cancellation analysis.
• System detuning analysis.
• Capacitor stress analysis.
• Skin effect modeling.
CYMHARMO includes a capacitor rating module to perform the stress analysis of all power
capacitors installed in the network, including those incorporated in filters. The analysis reports the
harmonic currents and voltages of each capacitor as well as the total reactive power, RMS current, RMS
voltage and peak voltage. These quantities will be compared to user-defined limits and any capacitor
that violates any of those limits will be reported and highlighted on the network one-line diagram.
CYMOPF - Optimal Power Flow Analysis
CYMOPF allows the user to engage in advanced system planning studies to optimize system performance,
examine cost-efficient operational planning alternatives, articulate system control strategies and
rationalize equipment utilization, resulting in better overall system asset management. CYMOPF
calculates the “best possible” values for “higher level set points” considering a set of user-specified
objective functions and a number of constraints. In this way, it adds intelligence and, consequently,
improves efficiency and throughput of power system studies significantly. CYMOPF relies on robust
barrier-method based nonlinear optimization techniques that permit fully coupled optimization, with the
entire set of system control variables, including generation schedules, transformer taps, phase shifter
settings,etc. System equipment constraints are observed, in particular bus voltages and line flows.
CYMOPF includes infeasibility handling through automatic relaxation of immediate binding constraints
and comprehensive constraint ranking severity indicators for cases that exhibit convergence difficulty.
CYMOPF is aptly suited in solving many problems typically found in today’s less-regulated power markets:
• Scheduling of ancillary services for reactive power and active power.
• Development of system reference scenarios.
• Voltage collapse analysis.
• Transfer capability investigation.
• Location based marginal cost assessment.
• Implicit penalty function consideration.
CYMVIEW-Simulation Results
CYMVIEW, common to all CYME simulation modules, generates any kind of charts. CYMVIEW is capable of
managing the outputs of the various CYME software modules:
• Real-time plotting of variables specified in user-defined models (bar charts, curves, time waveform).
• Complete system-wide tabular reports generated with complete echo of the data used for the
simulation.
• R-X plots, sensitivity analysis plots.
• Equipotential contours in 2D and 3D.
• Capability to compare results from different simulations.
• Algebraic manipulation of plots and variables during plotting.
• Possibility to plot multiple results on the same graph.
• Unlimited number of graphs.
• Capability to customize units, labels and plots appearances.
• Can be exported to MS Excel or to HTML format.
PSAF for Industrial Power Systems
CYME offers a comprehensive suite of powerengineering applications well adapted for ndustrial power
systems with 250 buses or less.
PSAF features applications for the most common sudies and assessments involved in the designand
maintenance of power systems in industries.Includes load flow, short-circuit, motor starting analysis,
and protective device coordination. With more specialized tools you can perform harmonic analysis
(with full 3-phase modeling capacity) and transient stability studies. The latter comprises user-defined
modeling capabilities allowing for the creation of your own models for equipment, controls, relays or
special functions.
CYMTCC-Protective Device Coordination
CYMTCC addresses Time Over-Current protection for Industrial, Commercial and Distribution Power systems.
The program comes with an extensive database of over 5000 protective devices that are easily called to
produce Time-Current curve plots and device settings reports. It also features a unique
Coordination wizard to suggest protective device settings/adjustments and ratings. CYMTCC features a
direct interface to PSAF to verify the coordination of protective devices. It can also be used to provide
the device opening times that are used in the Arc Flash Hazard simulation module of PSAF.
CYMGRD-Substation Grounding
CYMGRD is CYME’s substation grounding grid design and analysis module specially designed to help
engineers optimize the design of new grids and reinforce existing grids, of any shape, by virtue of easy
to use, built-in danger point evaluation facilities . The program conforms to IEEE Std. 80-2000,
Std. 81-1983 and Std. 837-2002. The use of CYMGRD allows for the rapid analysis of various design
alternatives to choose an economical solution for any particular installation. User-friendly data entry,
efficient analysis algorithms and powerful graphical facilities render CYMGRD an efficient tool that
helps the engineer arrive at technically sound and economical designs.
Graphical and Reportingties
The PSAF simulation modules are easy to use, reliable and powerful with the most advanced
industry-proven modeling and algorithmic solution techniques for the most demanding engineering
analyses. PSAF offers a highly interactive graphical interface that makes it easy to draw the network
one-line diagram on the screen and define the parameters of its components. At any time, you may
display and edit the data pertinent to any component. You may even have the one-line diagram drawn
automatically for you as you connect components together. PSAF also comprises cable and equipment
estimation programs to further enhance the process of building a consistent network diagram upon which
realistic and reliable system studies can be performed. With the PSAF sophisticated facilities for
reporting and plotting, you can easily select the variables you need and customize your simulation
reports as required. You may design custom reports by selecting items from a menu. Undesirable load
flow conditions such as overloads and under/overvoltages may be reported.
CYMDIST-Distribution System Analysis
CYMDIST can perform several types of analyses on balanced or unbalanced three-phase,two-phase
and single-phase systems that are operated in radial, looped or meshed configurations. The base module
includes per-phase voltage drop and power flow analysis, fault calculations (fault flows and fault
voltages), protective device coordination, optimal capacitor placement and sizing, load balancing and
load allocation/estimation. CYMDIST is also equipped with add-on modules to perform more specialized
analyses such as reliability analysis, contingency analysis, harmonic analysis, switching (tie-points)
optimization, and more.
Features and Capabilities
- Power flow and voltage drop analysis
- Fault analysis
- Optimal capacitor placement and sizing
- Load balancing and load allocation/estimation
- Harmonic analysis
- Switching (tie-points) optimization
- Service restoration
- Reliability analysis (predictive and historical)
- Contingency analysis
- Substation and sub-network modeling and analysis
- Secondary network analysis
- Arc flash hazard
- Protective device coordination
CYMDIST is an extremely powerful tool to assist you in creating "what-if" studies and performing
simulations to evaluate the impact of modifications to your network, actual or future. With the
newly added “Network Forecaster” function you can view/modify/create time-dependent projects in
the selected period, that consist of any modifications such as the addition of any load at a given
date (year, month or day), change/ replacement of power transformers within the substation,
rephasing/reconductoring project,network switching or reconfiguration, etc.
CYMDIST–RAM -Predictive & Historical Reliability Assessment
CYMDIST(RAM) provides a framework within which scenarios are run and the impacts of the related
investment such as DA (Distribution Automation) can beevaluated and understood. The program
computes the standard reliability indices for the overall system and all the corresponding
protection zones such as MAIFI, SAIFI, SAIDI, CAIDI, ASAI, ENS (Energy Not Supplied), AENS and LEI.
It also computes customer point indices such as the frequency of interruption, the duration, etc.,
for each customer and protection zones.
CYMDIST can simulate the impact of DA since the protective devices and switching devices can be
modeled with their automated and/or remote control attributes. The program accounts for the selected
reclosing schemes in conjunction with the fuse saving/clearing options as well as the actual
coordination of the protective devices. The driving time and inspection time
(function of the line/cable length) are included in the restoration time and fault indicators
(visual or remote) are supported and will affect the total restoration time.
Automated or manual load transfers are taken into consideration automatically and will be allowed if
capacity constraints are not violated. CYMDIST(RAM) features a module to calibrate the predictive
model based on historical data. This functionality is very handy to adjust the failure rates and repair
time for the overhead lines and cables in order to match the simulated model with historical indices.
Analytical Capabilities
- Balanced and unbalanced Voltage Drop analysis (radial, looped or meshed).
- Protective device coordination verification according to user-defined criteria for device clearance
and loading.
- Fault current calculations for RMS, asymmetrical and peak values for all shunt fault configurations.
- Fault flow and fault voltage analysis throughout the network taking into account pre-fault loading
conditions.
- Optimal capacitor placement and sizing to minimizelosses and / or improve voltage profile.
- Load balancing to minimize losses.
- Load allocation/estimation using customer consumption data (kWh), distribution transformersize
(connected kVA),real consumptions (kVA or kW) or the REA method. The algorithm supportsmultiple metering
units as fixed demands and large metered customers as fixed load.
- Motor starting analysis (voltage dip and maximum motor size allowable).
- Flexible load models for uniformly distributed loads and spot loads featuring independent load mix
foreach section of circuit.
- Load growth studies for multiple years.
- Feeder interconnection for load transfer simulations.
- Phase merging capability.
- Automatic re-conductoring and re-phasing of selected sections.
- Distributed Generation
CYMDIST- HARMO -Harmonic Analysis
CYMDIST-HARMO features a number of analyses, including frequency scan, voltage distortion and current
distortion calculations on unbalanced systems. CYMDIST-HARMO allows the user to easily detect resonant
frequencies due to capacitor banks, and to model non-linear loads and other sources of harmonic currents
such as converters and arc furnaces. With these capabilities, it is possible to evaluate the impact of
these non-linear loads on your distribution network. The program will compute standards indices such as
the voltage distortion factor, the current distortion factor, the telephone interference factor, etc.
The program supports the addition of the standard single-tuned filters, double-tuned filters, C-type and
high-pass filters, and you may compute the effectiveness of these filters and modify them at will in
order to attain acceptable level of harmonic distortion on your distribution network.
With CYMDIST-HARMO you can perform phase or sequence analysis, driving point and transfer point frequency
scanning analysis, voltage and current harmonic distortion, calculation of telephonic indices, system
detuning analysis, and more.
CYMDIST–SOM -Switching Optimization
CYMDIST-SOM assists the distribution engineers in determining the optimal feeder configuration that will
minimize losses, improve the voltage profile and balance the load between feeders. The module can
determine the optimal location of the tie points by suggesting new locations
(addition of switching devices) or recommending new switching schemes for existing devices to achieve
your objective. It will help you minimize abnormal conditions such as overloaded equipment and low
voltage conditions, and to minimize unbalanced loading among interconnected feeders.
CYMDIST-CAM -Contingency Analysis
CYMDIST-CAM is designed to study the impact of single forced or planned outages on the electrical
distribution system. It finds the optimal switching plan to restore electrical power to priority
customers and to recover the maximum possible load in the affected areas. Contingencies may be set
at the substation, circuit or component level, meaning that you may study the impact of losing a
transformer-bank in the substation or simply simulate a damaged component on the main feeder.
Reporting and Graphical Capabilities
CYMDIST reporting facilities allow to fully define the analyses results into web reports.
CYMDIST includes a variety of report templates for all types of analyses. You can combine any
reports, and create new ones, utilize any CYMDIST variable and created your own mathematical
expressions using any of those variables, which further extends the reporting possible with CYMDIST.
You can entirely customize and color-code the one-line diagrams displayed in CYMDIST. The software
comes with a collection of templates and libraries that you can expand; and you can also create
your own.
- Create your own library of symbols, or modify the symbols provided in the standard library.
- Compose your own color coding layers to display analysis results, input data information, etc.
- Customize the display of any element of the one-line diagram (individually or by device type).
- Add text, lines, circles, etc. and insert graphica elements in your network, and save them with
your network database.
And with CYMDIST-MAP map overlay module, you can display raster or vector map images (geographical
landbase such as DWG, DXF, SHP, etc) as layers directly underneath the electrical model. You can
select and toggle on/off the different layers. You can also copy the map and the electrical model
to the clipboard for pasting into other Windows applications.
CYMDIST–SUB/SUBNET- Substationand Sub-Network Modeling and Analysis
With CYMDIST-SUB/SUBNET you can model all the major components of the distribution substation and
any sub-network such as the detailed modeling of an industrial facility. The graphic editor of
CYMDIST is utilized to build the One Line Diagram of the substation. The impact of all components
of the substation as well as all components of the feeders connected are taken into consideration
during the analysis. Thus, the user is able to analyze the effects of a change in the nominal
operating condition of one feeder on another.
CYMDIST–SNASecondary NetworkAnalysis
CYMDIST-SNA allows the Power Flow and Short Circuit analyses of heavily meshed secondary network
distribution systems for any voltage level. You can build the secondary grid and include the complete
vaults with their transformers and protective devices, the secondary lines or cables, and the
distribution transformers. It includes comprehensive presentation tools for selective visualization
and effective management of large datasets, like spreadsheets, rapid graphics, and a multitude of
context-dependent reporting facilities.
Complementary Modules
CYMDIST Gateway - CYMDIST Gateway is the CYME solution for the creation and maintenance of the CYMDIST
distribution network data model. The connectivity network extracted from your Geographic Information
System (GIS) is accurate, electrically complete, with actual loads and switch status; and this network
model can be updated easily. CYMDIST Gateway is a generic interfacing method with the libraries of your
enterprise GIS. It is a stand-alone solution that features a data manipulation engine reading the GIS
data format. It builds the network connectivity without using proprietary code and generates the files
needed by CYMDIST.
CYM-ARC Flash Hazard - This module computes the necessary parameters required to assess the risk level
and adopt the adequate safety procedures. It complies with industry recognized standards and methods
for performing ARC Flash Hazard calculations to facilitate the calculation of arc flash hazards in
different types of equipment in various power systems.
CYMTCC - Protective Device Coordination - This module addresses Time Over-Current protection for
Industrial, Commercial and Distribution Power systems. The program comes with an extensive database
of over 5000 protective devices that are easily called to produce Time-Current curve plots and device
settings reports. It also features a unique Coordination wizard to suggest protective device
settings/adjustments and ratings. CYMTCC features a direct interface to CYMDIST to verify the
coordination of protective devices, the maximum permitted operating time («Reach») and the maximum
permitted continuous load current.
All the data resides in standard SQL tables and XML files so it can be easily populated or queried by
third parties applications. CYMDIST can be interfaced with or embedded in other applications such as
AM/FM/GIS system, DMS, NMS, OMS or SCADA systems and is available as a Microsoft Component Object Model
(COM) for integration with other COMcompliant applications.
