power electronics software

7/23/2019 Power Electronics Software

1/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

ELECTRICAL SOFTWARE TOOLS OVERVIEWB. Chuco P

Centro de Investigaciones Elctr icas Electrnicas del Per [email protected],Telf. 51-1- -240 0407

ABSTRACT: In this work sampling an over view about electrical power software tools, free and commercialsoftware, software applicability, models and algorithm running and Specific COMPARISON OF THEELEMENTS OF TWO PROGRAMS.Keyword: Free Software, Commercial Software, electrical engineer process.

1.- INTRODUCTION:ELECTRICAL SOFTWARE packages forsystem analysis can be basically divided intotwo classes of tools:

Commercial softwares. Educational/research-aimed softwares.

Commercial software packages available onthe market for e.g. are:

PSS/E, EuroStag, Simpow, Digsilent PowerFactory, Etap, Power World, CAPE, CYME, etc.follows an .all-in-one. Philosophy and aretypically well-tested and computationallyefficient. Despite their completeness, thesesoftwares can result cumbersome foreducational and research purposes. Even moreimportant, commercial softwares are closed.,i.e. do not allow changing the source code oradding new algorithms. For research purposes,the flexibility and the ability of easy prototypingare often more crucial aspects thancomputational efficiency. On the other hand,

there is a variety of open source research tools,which are typically aimed to a specific aspect ofpower system analysis. An example isUWPFLOW which provides an extremely robustalgorithm for continuation power flow analysis.

2.- BASIC QUESTIONS

2.1.- What is an Electrical Software?Electrical Software its a computer aidedengineering tool for the analysis, based inmathematic, physic, logic and over

electromagnetic, electromechanically laysalgorithm, and by other ways, this computertools are based on high-performance levelcomputer language, which solutions is to applydifferent rules of convergence. the result of thiscomputer tools are to facility the electrical faultssolutions works of the electrical engineer.2.2 Models and Algorithmsin focus of the more the one models andalgorithms, in this papers only shown for themost popular algorithms.

Basically, trapezoidal rule of integrationis used to solve the differentialequations of system components in thetime domain.

Rule of solves the differentialequations of the entire power systemand its controls in the time domain(both electro-magnetic and electro-mechanical systems). This class ofsimulation tool differs from load flowand transient stability tools, which usesteady state equations to representelectrical circuits (i.e.

electromagnetic), but solve thedifferential equations of machinemechanical dynamics (i.e. rotationalinertia).Other package fixed-step more theone types of variable-step solverscan be used, depending on thecomplexity of the problem.Integrated, interactive single linegraphic and data case handling orsameSolutions of Modal Equations andothers techniques.

2.3.- Software Applicability?The main applications of this softwares is forany electrical problem, planning, operating,control, enterprise energy management, etc.

2.4.- Who are to be apply?Can to be apply planner engineer, analyticalengineer, operator, controller, engineerstudents, professor, etc. the utilizations issatisfied after strong electrical conceptunderstand, because is very necessary takethe global and punctual concept in the mind.

2.5.- Is an electrical software an virtuallaboratory?The Continuous development of appropriatesoftware packages makes simulation of powerengineering problems more and moreeffective, grown the more the best tools, canexactly simulate of power electrical systems,whit high validate outputs, can be applicablein electric systems design, electric devicedesign, and others, from each otherconsiderably from the point of view of the

applicability to a special problem. This toolsare very realistic, are virtual electricalsystems, when the electrical engineer can


2/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

change any parameters or operations state,etc.The software tools applications in the electricpower field involving planning, design,constructions, operations, maintenance, andcontrol of power systems. Each issue carriesfeature virtual experience for active engineer.

En CIEEP

1

used to simulate a wide spectrum ofdynamic systems ATP-EMTP, Matlab, andPSSCAD. which are specific software tosimulate power system transient problems andCIEEP research engineer obtain virtualexperience.

2.6.- Which are the Virtual laboratorybenefitsEngineers and scientists spend countless hourslearning in the classroom and poring overacademic journals, but nothing compares to thetraining they receive in the laboratory. Hands-

on education allows them to experience thebackbone of engineering and scienceconducting experiments, testing hypotheses,learning from their mistakes, and reaching theirown conclusions. For students with disabilitiesthat prevent them from using their arms, the labhas been a place for observation, not action.Now, in a novel extension of the innovativecomputer-based tutoring technology hedeveloped, Brian P. Butz, an electricalengineering professor at Temple is helpingthese students overcome their disabilities andget the most out of their learning experiences.

Its necessary to do actual experience or hand-on practice, but this activity is often expensiveand logistically complex or dangerous.Numerical simulation software has beendeveloped as the solution. The engineers cancreate a computerized simulation model forsimulating the actual experience. Complexity ofthe concepts that has to be represented makesthe utilization of the numerical simulationsoftware.Experiment in laboratory has been consideredas natural studying method for understandingthe phenomena or the concepts of technology

and science. This method would be adapted inthe utilization of numerical simulation system bydeveloping environment that makes theengineers as if doing an experiment when theyare exploring the system.The virtual laboratory applications of electricalengineering safety will form the basis forexperiential work in existing electrical systemssuch as simulation and development of newdesign/simulation immersive learningopportunities are also available teaching tool

3. Electrical Engineering intended software

classifications

1 Centro de Investigaciones elctricas electrnicas del P er

in this work are shown an intended softwareclassifications:

A.- FREE SOFTWAREUWPFLOWVoltage Stability Toolbox (VST) - PC/Unix VersionSPS (SimPowerSystems)PSAT (Power system Analysis Tool)

PSAP (Power System Analysis Program)PST (Power System Toolbox)PAT (Power Analysis Toolbox)MATPOWERMATEMTP (Matlab Electromagnetic TransientProgram)EST (Educational Simulation Tool)ATP (Alternative Transient Program)PCFLO and PCFLOHIntelligent Systems in Power SystemsPowertechPSAT - PowerFlow & Short circuit AnalysisTool

VSAT - Voltage Security Assessment ToolTSAT - Transient Security Assessment ToolSSAT - Small Signal Analysis ToolCDT - Control Design ToolBox

B.- COMMERTIAL SOFTWARE

CYME (CYME INTERNATIONAL INC. USA-Canada)PSS/E (Power Technologies, INC. Canada)EuroStag (Tractebel, EDF Electric France Belgium - Frnace)Simpow (STRI from ABB.)PSCAD (Manitoba HVDC Research Centre Inc.Canada)DigSilent PowerFactory (DigSILENT GmbHGermany)PowerWorld (PowerWorld Corporation - Canada)MATLABSIMULINKASPENEMTP-RV (Transnergie Technologies Hydro-Qubec group)

EMTP96 (DCG/EPRI EMTP User)NEPLAN (BCP-Suiza)CAPE (Electrocon - USA)SKM POWER TOOLS (SKM Systems Analysis, Inc.USA

RTDS Simulator (RTDS Technologies Inc. Canada)ETEP (Operation Technoloogies, Inc. USA)EDSA (EDSA Micro Corporation USA)SPARD Power (Energy Computer System, Inc. )CDEGS (SES USA)ERACS - Power Systems Analysis Software(ERATechnology Ltd. UK)

4.- Any Electrical software Over Viewdescriptions

A.- FREE SOFTWARE

UWPFLOW

UWPFLOW is a research tool that has beendesigned to calculate local bifurcations relatedto system limits or singularities in the systemJ acobian. The program also generates a


3/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

series of output files that allow further analyses,such as tangent vectors, left and righteigenvectors at a singular bifurcation point,J acobians, power flow solutions at differentloading levels, voltage stability indices, etc.

Voltage Stability Toolbox (VST)

Voltage instability and collapse have becomean increasing concern in planning, operation,and control of electric power systems. In orderto understand the phenomena and mechanicsof voltage instability,a powerful and user-friendly analysis tool is very helpful. VoltageStability Toolbox (VST) developed at the Centerfor Electric Power Engineering, DrexelUniversity combines proven computational andanalytical capabilities of bifurcation theory andsymbolic implementation and graphicalrepresentation capabilities of MATLAB and itsToolboxes. It can be used to analyze voltage

stability problem and provide intuitiveinformation for power system planning,operation, and control.

SPS (SimPowerSystems)

The power_analyze command computes theequivalent state-space model of the specifiedelectrical model built with SimPowerSystems. Itevaluates the A, B, C, D standard matrices ofthe state-space system described by theequations

where the state variables contained in the xvector are the inductor currents and capacitorvoltages. Nonlinear elements are simulated bycurrent sources driven by the voltages acrossthe nonlinear elements.The inputs of the system contained in the uvector are the voltage and current sources plusthe current sources simulating the nonlinear

elements. The outputs of the system containedin the y vector are the voltage and currentmeasurements plus the voltages across thenonlinear elements.

PSAT (Power system Analysis Tool)He main features of PSAT are Power flow,Continuation power flow, Optimal power flow,Small signal stability analysis, Time domainsimulation, Phasor Measurement Unit (PMU)placement, Complete graphical user interface,CAD for network design (Simulink library), Userdefined models, Conversion of data files from

several formats, Export results to EPS, plaintext, MS Excel and LaTeX files, Interfaces toGAMS and UWPFLOW programs, Commandline usage, GNU/Octave compatibility.

Power flowContinuation power flowOptimal power flowSmall signal stability analysisTime domain simulation Phasor Measurement Unit (PMU)

placement Complete graphical user interface CAD for network design (Simulink library) User defined models Conversion of data files from several

formats Export results to EPS, plain text, MS Excel

and LaTeX files Interfaces to GAMS and UWPFLOW

programs Command line usage GNU/Octave compatibility

PSAP (Power System Analysis Program)Power System Analysis Program (PSAP) isused to solve the power flow.PST (Power System Toolbox)PST was developed by J oe Chow ofRensselaer Polytechnic Inst. to enable usersto perform power system analysis withinMATLAB . It consists of a set of coordinatedMATLAB m-files, power system applicationdemo files, data files and a Users' Manual. A

new version (2.0) is now available, which hasbeen considerably enhanced from version1.0. The enhancements have made the


4/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

toolbox more easy to use and it also has addedmodels for induction motors and HVDC links.This version was developed using MATLABVersion 4.2c, but it has been converted to befully MATLAB 5.* compatible.PAT (Power Analysis Toolbox)A simulation software package and design and

analysis tools for complex interactive powersystems: The Power Analysis Toolbox (PAT)within MATLAB/Simulink.

MATPOWERIs a package of Matlab M-files for solving powerflow and optimal power flow problems. It isintended as a simulation tool for researchersand educators that is easy to use and modify.MATPOWER is designed to give the bestperformance possible while keeping the codesimple to understand and modify. It was initiallydeveloped as part of the PowerWeb project.

MATEMTP (Matlab Electromagnetic TransientProgram)Electromagnetic transient analysis, Powersystems, Program in MATLAB: MatEMTP

EST (Educational Simulation Tool)This case study provides an educationalopportunity for electrical engineering studentsat the sophomore/J unior level to expand theirknowledge about power systems in general,and more specifically power system blackoutrestoration. Besides offering explanations ofconcepts, this case study uses the dynamic

environment of html to help create links formore detailed and often more visualrepresentations of key concepts.

ATP (Alternat ive Trans ient Program)

Is the most widely used ElectromagneticTransients Program in the world! ATP is auniversal program system for digitalsimulation of transient phenomena of

electromagnetic as well as electromechanicalnature. With this digital program, complexnetworks and control systems of arbitrarystructure can be simulated. ATP hasextensive modeling capabilities and additionalimportant features besides the computation oftransients.

PCFLO and PCFLOHPCFLO is a load flow program which alsoincludes short circuit and harmonicscapabilities. PCFLOH is a harmonics-onlyversion of PCFLO, with special user interface

for harmonic studies. PCFLO contains somefeatures not found in many load flowprograms. For example, it lists the power losson each line and transformer. It allows theuser to control the transition point fromGauss-Seidel to Newton-Raphson.

Intelligent Systems in Power SystemsThe module on intelligent systems in powersystems contains three submodules: (1)security assessment, (2) fault analysis, and(3) distribution feeder protection. They havebeen tested on senior level power engineeringclasses

Powertech


5/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

PSAT - PowerFlow & Short circuit Analysis ToolVSAT - Voltage Security Assessment ToolTSAT - Transient Security Assessment ToolSSAT - Small Signal Analysis ToolCDT - Control Design ToolBox

Powertech's DSAToolsSuite is a leading-edge

software package for Dynamic SecurityAssessement (DSA) of power systems. Thesoftware is suitable for both off-line (systemplanning) studies as well as on-line (near-real-time) power system security assessment. TheDSATools include the following components,

MATLAB-BASED PACKAGES FOR POWER SYSTEM ANALYSIS

FUNCTIONS AVAILABLE ON MATLAB AND GNU/OCTAVEPLATFORMS

B.- COMMERTIAL SOFTWARE

CYME (CYME INTERNATIONAL INC. USA-Canada)

Transmission & IndustrialPSAF, Power System Analysis FrameworkCYMFLOW, Power Flow AnalysisCYM-AC, Contingency AnalysisCYM-Motor Start, Motor Starting AnalysisPSAF, Line Parameters CalculationPSAF, Cable Parameters Calculation

CYMFAULT, Short Circuit AnalysisCYMOPF, Optimal Power Flow AnalysisCYMSTAB, Transient Stability AnalysisCYMVSTAB, Voltage Stability AssessmentWECS, Wind Energy Conversion SystemsCYMHARMO, Harmonic AnalysisCYMLINE, One Line DiagramARC FLASH, Arc Flash Hazard AnalysisCYMTCC, Protective Device CoordinationCYMGRD, Substation Grounding Grid Design and AnalysisCYMCAP, Cable Ampacity Calculations CYMCAP-MDB, Multiple Duct Banks CYMCAP-OPT, Duct Bank OptimizerCYMCAP-SCR, Short Circuit Cable Rating

DistributionCYMDIST, Distribution System AnalysisCYMDIST (MAP), Map Overlay

CYMDIST (SOM), Switching OptimizationCYMDIST (HARMO), Harmonic AnalysisCYMDIST (RAM), Reliability AssessmentCYMDIST (CAM), Contingency AnalysisCYMDIST (SUB/SUBNET), Substation and Sub-network Modeling and AnalysisCYMDIST (SNA), Secondary Network AnalysisCYMDIST Gateway, Creation and Maintenance of

CYMDIST Distribution Network ModelCYMTCC, Protective Device CoordinationCYMGRD, Substation GroundingCYMCAP, Cable Ampacity CalculationsCYMCAP-MDB, Multiple Duct BanksCYMCAP-OPT, Duct Bank OptimizerCYMCAP-SCR, Short Circuit Cable RatingSolutionsCYMDIST (ASP), Advanced Switching PlanCYME SOLVERS, Embedded Calculation EnginesCYMCAP/NET, Network-Wide Thermal AnalysisMARS, Storm Assessment and Service RestorationCYMDIST Gateway, Creation and Maintenance ofCYMDIST Distribution Network Model

PSS/E (Power Technologies, INC. Canada)

PSS/E Optimal Power Flow (PSS/E OPF) is apowerful and easy-to-use network analysistool that goes beyond traditional load flowanalysis to provide you with the ability to fullyoptimize and refine your transmission system.This task is made even easier with thecomplete integration of PSS/E OPF into thePSS/E load flow program.PSS/E OPF improves the efficiency and

throughput of your power system performancestudies by adding intelligence to the load flowsolution process. Whereas the conventionalload flow relies on an engineer tosystematically investigate a variety ofsolutions before arriving at a satisfactorily"good" solution, PSS/E OPF directly changescontrols to quickly determine the bestsolution. From virtually any reasonablestarting point, you are assured that a uniqueand globally optimal solution will be attained;one which simultaneously satisfies systemlimits and minimizes costs or maximizes

performance.

In addition to being able to perform traditionalanalysis such as minimizing operating costs,PSS/E OPF is aptly suited to solving manyproblems more attuned to today's lessregulated environment, including:

Reactive power scheduling Voltage collapse analysis Transfer capability investigation Location-based marginal cost assessment

Ancillary service opportunity costassessment Impact assessment base case

development


6/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

PSS/E OPF provides you with all of the mostcommonly desired objective functions,including:

Minimize fuel costs Minimize active power slack generation Minimize reactive power slack generation Minimize active power loss Minimize reactive power loss Minimize adjustable branch reactance Minimize adjustable bus shunts Minimize adjustable bus loads Minimize interface flows Maximize interface active power transfer

The optimal power flow problem statement iscompleted by combining the objective with anynumber of constraints and controls, selectablefrom the following:

Bus voltage magnitude limits Branch flow limits (MW, Mvar, MVA, A) Interface flow limits (MW, Mvar) Generator reactive power capability limits Generation period reserve limits Generator active power limit Adjustable bus shunt limits Adjustable branch reactance limits Adjustable load limits

EuroStag (Tractebel, EDF Electric France Belgium - Frnace)

The user can create his own models, by usinginteractively a graphic tool (pre-processor).Each model is represented by a graphicalscheme, the so called "macroblock". NoFORTRAN nor C nor C++coding is requiredto specify new models of turbines, boilers,controllers, SVC, load, ... The macroblocksare designed on the screen of the computer,using a large set of elementary blocks to buildthe block-diagram.The macroblocks corresponding to differentgenerating units or injectors can be coupled to

represent the interactions between variouspower system components : hydro units on asame water column, combined cycles, HVDClines, etc...The first page shows an example ofAutomatic Voltage Regulator, modelled withthe dedicated module of EUROSTAG. Itincludes the AVR, the excitation system andthe overexcitation limiter.You will see at the bottom of display a set of13 elementary blocks, such as a summer, amultiplier, a constant, a square root, aexponential function, a gain, etc... More than

50 elementary blocks are available.


7/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

Simpow

The development of Simpow started 1977 atASEA (ABB) since there was a need for asoftware for HVDC modelling. Since May 1st,2004, the copyright, development and customerservices of Simpow has been transferred toSTRI from ABB.Simpow is a highly integrated software forsimulation of power systems. It covers a widefield of network applications but focusing mainlyon dynamic simulation in time domain andanalysis in frequency domain. The uniquesimulation and analysis features ensure anefficient planning, upgrading and utilization ofelectrical power networks for power production,power transmission and distribution, steelindustries, paper mills, chemical industries, oilproduction industries, consultant engineers EE,universities as laboratory tool for training under-and postgraduates, commercial researchinstitutes, etc.

PSCAD (Manitoba HVDC Research Centre Inc. Canada)

PSCAD is a fast, accurate, and easy-to-usepower system simulator for the design andverification of all types of power systems.For power quality studies, power electronicdesign, distributed generation, andtransmission planning.

Control tools


8/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

o Frequency dependent T-lines and cableso Multi-limb transformers with saturationo Synchronous machines and SSR

Studieso Arrestors and insulation coordinationo Lightning and impulse studieso HVDC, FACTS, and control

coordinationo Power electronics and driveso Control system modeling functionso Logic functions

DigSilent PowerFactory (DigSILENT GmbH Germany)

The calculation program DIgSILENTPowerFactory is a computer aided engineeringtool for the analysis of industrial, utility, andcommercial electrical power systems. It hasbeen designed as an advanced integrated andinteractive software package dedicated toelectrical power system and control analysis inorder to achieve the main objectives of planningand operation optimization.

The name DIgSILENT stands for "DIgital

SImuLation andElectrical NeTwork calculationprogram''. DIgSILENT Version 7 was theworld's first power system analysis softwarewith an integrated graphical one-line interface.

That interactive one-line diagram includeddrawing functions, editing capabilities and allrelevant static and dynamic calculationfeatures.

DIgSILENT Base Functions

Hierarchical, object-oriented databaseand Object Browser Single-user database server for 1

simultaneous user Integrated Network Expansion Stage

& Study Case Administration Multiple-Window & Multiple-Graphic

Single Line DPL Script Language DOLE interface for SCADA and GIS Network Reduction Voltage stability Contingency Analysis

Load Flow Analysis Load Flow for 1-Phase AC/DC and 2-

,3- Phase AC Systems Balanced and Unbalanced Load Flow Station Control, Network Control and

Transformer Tap-Changer ControlFault Analysis

VDE, IEC, ANSI and CompleteMethod

General Fault Analysis for 1-PhaseAC/DC and 2-,3- Phase AC Systems

DIgSILENT Stability Functions:

Balanced / unbalanced AC/DCsystems RMS and EMT modeling, long-term

stability Frames and Flexible DL++modeling Eigenvalue analysis

DIgSILENT Harmonic Analysis: Balanced / unbalanced harmonics

load flow Frequency Sweep

DIgSILENT Protection Functions: Distance relay modeling Time-overcurrent relay modeling Device response checks


9/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

PowerWorld (PowerWorld Corporation - Canada)

PowerWorld Simulator (Simulator) is a powersystem simulation package designed from theground up to be userfriendly and highlyinteractive. Simulator has the power for seriousengineering analysis, but it is also so interactiveand graphical that it can be used to explainpower system operations to non-technicalaudiences. With Version 11.0 weve madeSimulator more powerful, more visual, andeasier to use. Simulator consists of a number ofintegrated products. At its core is acomprehensive, robust Power Flow Solutionengine capable of efficiently solving systems ofup to 100,000 buses. This makes Simulatorquite useful as a standalone power flowanalysis package. Unlike other commerciallyavailable power flow packages, however,Simulator allows the user to visualize thesystem through the use of full-color animatedone line diagrams complete with zooming andpanning capability. System models can beeither modified on the fly or built from scratchusing Simulators full featured graphical caseeditor. Transmission lines can be switched in(or out) of service, new transmission orgeneration can be added, and new transactionscan be established, all with a few mouse clicks.Simulators extensive use of graphics andanimation greatly increases the users

understanding of system characteristics,problems, and constraints, as well as of howto remedy them. The base package ofSimulator is capable of solving power systemscomprised of up to 100,000 buses. The basepackage also contains all the tools necessaryto perform integrated economic dispatch, area

transaction economic analysis, power transferdistribution factor (PTDF) computation, shortcircuit analysis, and contingency analysis. Allof the above features and tools are easilyaccessible through a consistent and colorfulvisual interface. These features are so wellintegrated that you will be up and runningwithin minutes of installation.

MATLAB - SIMULINK

MATLABis a high-performance languagefor technical computing that includes functions

for numeric computation, data analysis,algorithm prototyping, system simulation, andapplication development.Multiplatform interoperability: MATLABapplications are fully transportable withoutmodification across platforms.MATLAB data files (MAT-files) from differentenvironments are converted automatically.MATLAB offers a unique simulation andprototyping environment. The powerfultechnical language is both concise anddescriptive, allowing you to model complexsystems with small sections of easy-to-follow

code.MATLAB and companion products offer anarray of tools for simulation and modeling,including:

A large collection of high-performancefunctions for mathematical computation,data analysis, equation solving, andvisualization, all available as part of coreMATLAB.Additional state-of-the-art algorithms inMATLAB add-on Toolboxes.Simulink and Stateflow block-diagramgraphical design environments.


10/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

ASPEN

Advanced Systems for Power Engineering, Inc.(ASPEN) is a developer and marketer of state-of-the-art engineering software for electric

utilities.ASPEN OneLineris a PC-based shortcircuit and relay coordination program for relayengineers. OneLiner is a productivity tool. Itrelieves the engineer from the tedious and time-consuming tasks of leafing through stacks ofprintouts and plotting and re-plotting relaycurves and one-line diagrams. OneLinerworksvery quickly under the control of the engineer.The engineer can change the relay settings andnetwork configuration and see the results of thechange immediately. The following are somehighlights ofOneLiner: Native Microsoft Windows program. Easy-to-use interactive graphics interfaceunder Windows 95, 98, ME, NT, 2000, and XP. Accurate modeling of 2- and 3-windingtransformers, phase shifters, lines, switch,series capacitors, generators, loads, shunts, dclines, and zero-sequence mutual coupling. Detailed modeling of fuses, reclosers, andovercurrent and distance relays. Extensiverelay library that can be edited by the user. Built-in short circuit program that simulatesall classical fault types (bus faults, and line-end,line-out and intermediate faults), as well assimultaneous faults. Virtually unlimited system size with modestmemory requirement. Lightning fast solution speed. Graphical display of post-fault solution andrelay operating time on the one-line diagramand the phasor diagram. Automatic checking of overcurrent anddistance relay coordination, plus automaticchecking of overcurrent relays' pickup andinstantaneous settings.

Automatic plotting of overcurrent anddistance relay characteristics on the screen.

User-defined distance-relay methods usingDLLs written in C++. High-quality printed outputs on a largevariety of printers and plotters. Built-in boundary equivalence program. Generates relay end-to-end test files in

Doble, COMTRADE, Omicron and otherformats. Data importing facilities for short circuitdata in ANAFAS, CYME, Electrocon, GE,PECO, PTI (PSS/E and PSS/U) and otherformats. Data exporting in PTI PSS/E raw andsequence data format, GE PSLF and ShortCircuit formats, and ANAFAS data format. Built-in PC network support. Built-in scripting language using the BASICprogramming language.

EMTP-RV (Transnergie Technologies Hydro-Qubec group)

EMTP-RV is the end result of the "EMTPRestructuring project" undertaken by the DCGin 1998 for modernizing the EMTP96software. EMTP-RV is the enhancedcomputational engine and EMTPWorks itsnew graphical user interface (GUI). Thepackage is a sophisticated computer programfor the simulation of electromagnetic,electromechanical and control systemstransients in multiphase electric power

systems. It features a wide variety ofmodeling capabilities encompassingelectromagnetic and electromechanicaloscillations ranging in duration frommicroseconds to seconds. Examples of itsuse include switching and lightning surgeanalysis, insulation coordination, shafttorsional oscillations, ferroresonance andpower electronics applications in powersystems.


11/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

EMTP96 (DCG/EPRI EMTP User)

EMTP96 is the most technically advancedtransients analysis program for the simulationof electromagnetic transients and harmonicanalysis, addressing the needs of engineers inareas such as power quality, lightningprotection, insulation coordination, capacitorbank switching, ferroresonance, and powerelectronics in electrical power systems. Youcan reach us, the DCG/EPRI EMTP User

Support and Maintenance Centre at Hydro OneNetworks Inc

NEPLAN (BCP-Suiza)

The most user-friendly and fully integratedPower System Analysis software for ElectricalTransmission, Distribution and IndustrialNetworks, including Optimal Power Flow,Transient Stability, Reliability Analysis andmuch more.

NEPLAN upgrades your productivity

fully-thought-out data management facility,featuring plausibility checks

integrated connection to widely useddatabases

SQL data scanning for MS-Access, Oracle management of different network variants multi-layer techniques flexible choices for displaying results extensive libraries for network elements and

protection devices direct interfacing with geographical

information systems (GIS) and SCADAsystems

option for expansion into your own networkinformation system (NIS)

CAPE (Electrocon - USA)

The programs of the Computer-AidedProtection Engineering (CAPE) series weredesigned to serve you the protection engineerwith the most powerful, easy-to-use softwaretools we could devise. CAPE is a world-classproductivity tool developed by Electroconunder the initial sponsorship of ten major U.S.electric utilities. CAPE consists of a series ofcore and optional modules for analysis andreporting, linked by a general-purposedatabase. Beginning from this CAPE HomePage you will find detailed descriptions andpictures of each of the basic and optionalmodules of CAPE. Operating requirements,and licensing information follow immediatelyafter the list.

Database EditorShort CircuitOne-Line DiagramCoordination GraphicsRelay Setting

System SimulatorRelay CheckingLine ConstantsOrder Production


12/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

Short Circuit ReductionPower FlowBreaker Duty AnalysisSettings Transfer Utilities

Support for macros is also a standard

feature. In its simplest form, a macromay be just an abbreviation you choosefor a command. In more powerfulmacros, entering the macro nameinvokes a whole set of commands thatrun like a program within the CAPEprogram. In CAPE, macros have beenextended to allow commands normallyfound in high-level computerlanguages, commands such as IF-

THEN-ELSE, DO-WHILE, and DO

loops such as DOBUSES andDOLINES that are tailored to powersystem problems. Taken together,these features are referred to as theCAPE User's Programming Language(CUPL).

SKM POWER TOOLS (SKM Systems Analysis, Inc. USA)

PTW Arc Flash Evaluation calculatesthe incident energy and arc flashboundary for each location in a powersystem. Arc Flash saves time byautomatically determining trip timesfrom the protective device settings and

arcing fault current values. Incidentenergy and arc flash boundaries arecalculated following the NFPA 70Eand IEEE 1584 standards. Clothingrequirements are specified from auser-defined clothing library. Clearing

times can be automatically reducedbased on current-limiting capabilities.

Avoid fires, lost productivity, andlitigation costs.

Design safer power systems whileinsuring compliance with NEC 110.16,

OSHA, NFPA 70E and IEEE 1584standards. Save time with the fullyintegrated Short Circuit, Over-CurrentCoordination, Equipment Evaluationand Arc Flash Evaluation modules

working together with libraries ofclothing levels, protective devices andbus ratings.

Provide a safer working environmentby specifying the proper level ofclothing. Wearing inadequate clothingis dangerous for obvious reasons, butwearing too much clothing isdangerous due to limited mobility andvisibility.

Evaluate alternatives quickly andeasily to establish an optimal design.

Improve safety margins with user-definable arcing fault tolerances.Save time by automatically generating

arc flash labels and work permits.Avoid potential fines, lost productivity,

and increased insurance and litigationcosts.

ETAP (Operation Technoloogies, Inc. USA)

ETAP is the most comprehensiveanalysis tool for the design,simulation, and operation ofgeneration, distribution, and industrialpower systems.


13/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

ETAP Real-Time is a suite of softwaretools that offers a fully integratedenterprise solution. Through continuousmonitoring, simulation, and optimizationof the electrical, process,manufacturing, and management

systems that are in place, ETAPoptimizes the entire productionprocess, reduce losses, and increaseprofits.

System monitoringCost optimizationsLoad managementReal Time SimulatorAlarm & WarningDynamic Load Shedding, etc.

EDSA (EDSA Micro Corporation USA)

Intelligent Electrical System HealthMonitoringIntelligent Predictive Detection and ControlDistributed and Embedded SecureSolutionsEnterprise Wide View of all Key ProcessesMassively Scalable with Built-InRedundancySecure Browser based solutionsRapidly Deployable for Mission CriticalApplicationsIntelligent One-Line Diagramming, BlockDiagramming and Control SystemDiagrammingRobust Reporting, Plotting and ChartingBuilt-InIntegrated Control System Simulation(open and closed loop)Fault Analysis (IEEE ANSI IEC) & ArcHeat Simulation (NFPA70E 2004\ IEEE1584)Power Flow Simulation (AC and DC) withIntegrated Expert SystemProtection Coordination with integratedExpert System

Best-of-Breed Dynamic Transient StabilitySimulation.Power Quality and Reliability Analysiswith integrated Expert System

5.- COMPARISON OF THE ELEMENTS

OF THE PROGRAMSShowing a abstract table Nro. 1, forthe next software:ATP-DrawPSACADMatLab


14/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

Specific COMPARISON OF THE ELEMENTS OF TWO PROGRAMSSource

MATLAB ATPDC voltage source,AC voltage or current source,

External controlled voltage orcurrent source (controlled by anarbitrary signal),

3-phase programmable controlsource (time variation of amplitude,phase and frequency by step, rampor modulation, 2 harmonics inaddition).

DC source, current or voltage,AC source, current or voltage,

Ungrounded AC or DC voltage source,AC source, 3 phase, current or voltage,Ramp source, current or voltage, Two-slope ramp source, current or

voltage,Double exponential source,Heidler, Standler, Cigr type source,

current or voltage,TACS controlled source, current or

Voltage.

Switches

MATLAB ATP Single and three-phase logical

controlled (opens at next currentzero-crossing)

Ideal switch (parallel to an RCsnubber circuit)

Single phase time controlled, Three-phase time controlled, Voltage controlled, TACS (external) controlled, Statistic (random, based on predefined

distribution functions), Systematic (periodic).

MachinesMATLAB ATP

Synchronous, 3 phase(Fundamental standard parameters,former ones pu),

Simplified synchronous, Permanent magnet synchronous, Synchronous machine voltage

regulator and exciter,Asynchronous,DC, Steam turbine and governor,Hydraulic turbine and governor.

Synchronous, 3 phase,Synchronous with TACS control, 3 phase,Synchronous, set initialisation under ATP,

3 phaseInduction (Asynchronous), set initialisation

under ATP, 3 phase,Induction (Asynchronous), set initialisation

under ATP, 1 phase,DC, set initialisation under ATP.

Lines, cables

MATLAB ATPLumped

_ P Section line, parameters: Number ofP sections and R, L, C values.

Distributed (based on Bergeron's

Lumped

RLC equivalent 1, 2, 3 phase,RL coupled non-symmetric 2, 3, 2x3 phase,RL coupled, symmetric 3, 2x3 phase.


15/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

method)Parameters given by N*N matrices,Parameters given by sequential

components.

Distributed

Transposed 1, 2, 3, 6, 2x3, 9 phase,Untransposed 2, 3 phase.LCC line/cable

defined by the geometrical and materialdata of the line/cable 19 phase. Bergeron,

P, J-Marti, Noda and Semlyentype of transmission line models.

TransformersMATLAB ATP

Linear, 1 phase (2 or 3 windings),Linear, 3 phase (YgY, YgD1, YgD11,

D1Yg, D11Yg, YgYD, YgYgD),Saturable, 1 phase (2 or 3 windings),Saturable, 3 phase (YgYgD),

12 terminal linear 3 phase transformer(the connections can be set manually)

Three phase transformers are assembledfrom single-phase ones.

Ideal, 1 phase (only the turn ratio can begiven),

Ideal, 3 phase (only the turn ratio can begiven),

Saturable, 1 phase (2 windings),

Saturable, 3 phase (2 or 3 windings, thewinding connection and phase shift can bechosen),

Saturable, 3 phase, 3-leg core type (Y/Yonly) with high homopolar reluctance

BCTRAN

Linear Elements

MATLAB ATPSeries RLC branch, 1 phase,Series RLC branch, 3 phase,Parallel RLC branch, 1 phase,Parallel RLC branch, 3 phase.

Parameters can be defined either asR,L,C or as P and Q.

3 phase mutual inductance.

IResistor,Capacitor with damping resistor, Inductor with damping resistor, RLC in

series, 1 phase,RLC in series, 3 phase,RLC branch 3 phase Y-connected,RLC branch 3 phase D-connected,Capacitor with initial voltage,Inductor with initial current.

Non-linear Elements

MATLAB ATPMetal-oxide surge arrester. Resistor, time-dependent,

Resistor, current-dependent,Resistor, TACS (external) controlled,Inductor, current dependent,Inductor, current dependent with initial

flux,Hysteresis inductor,Hysteresis inductor with initial flux,Metal-oxide arrester (exponential

currentdependent resistor) 1 and 3 phase.


16/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

PowerelectronicsMATLAB ATP

Diode,Thyristor,IGBT,

GTO,Mosfet1, 2 or 3-arm bridge of any of the

former.

Diode,Thyristor (Valve)controlled by TACS,Triac.

Powerelectronics Devices MATLAB ATP

HVDC, 6, 12, 24 PulsesSVCSTATCOMUPFCTCSCDRIVES. Etc.

CIEEP-ATP users devicesDiode,HVDC, 6, 12, PulsesSVCSTATCOMUPFCTCSCCustom Power devicesCycloconverter, and others

Power electronics control blocks

MATLAB ATPTimer (generates a control signal asspecified transition times),

Synchronised 6 or 12-pulse generator(to fire the 6 or 12 electronics switchesof a 6 or 12 pulse converter).

Need to be constructed by the user usingTACS or MODELS.

Measurement elements

MATLAB ATPIdeal voltage and current measurement,Impedance measurement,True RMS meter,Fourier coefficients,THD,Active and Reactive power3phase sequence analyser,abc to dq0 transformation and vice

versa.

Probe TACS,Ideal voltage and current measurement,Branch voltage measurementInstantaneous power and energy (for most

elements).

Signal processing units


17/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

MATLAB ATPSome additional sources:

Step,Ramp,Sine wave,Random generator (gives uniformly or

normally distributed random signal),Arbitrary repeating sequence,Clock,From file.Sinks (simulation outputs):

Numerical display,Time scope,XY scope,Power spectral density scope (FFT),Spectrum analyser (transfer function

between two points, with some

restrictions)To File,Auto-correlator and cross-correlator.Continuous:

Derivative,Integrator,Transfer function (user defined transfer

function in the s domain),Variable delay (apply variable time

delay to the input).Discrete:

Sample/Hold (Zero/First-order sampleand hold function),

Transfer functions (user definedtransfer function in the z domain),Math, logical, statistical:

wide range of functions (complex,logical, trigonometric, statistical etc.).

Algebraic Constraint: it solves anequation f(x) = 0 where x is the outputof this block, and it is indirectly

connected back to the block's input,which is f(x). This connection realisesthe function f. In each simulation stepan iteration of the output is performedso that the input equals to zero. Non-linear:

several types of simple non-linearfunctions (Relay, Quantiser, Dead zone,Rate limiter, Saturation etc.).

n dimensions look-up table (user definevalue n-tets, e.g. in 2D case a simple

function given by pairs of points;linearly interpolated in between),Flip-flops (J-K, S-R, D, D Latch,

TACS sources in the signal processing

network:

DC,AC,Pulse,

Ramp.Transfer functions:

Transfer function (user defined transferfunction in the s domain, max. 7th order)

IntegralSimple derivativeFilters (first order low/high pass)Devices:

Frequency sensorRelay-operated switch (controlled by an

external signal absolute value)Level-triggeredTransport delay (give a limited delay that

consists a fix and an input dependentcomponent)

Point-by point non-linearityMultiple open-close switch (Gives 18 open

and close sequences at the times set)Controlled (resetable) integratorSimple derivativeInput-IF component (Output is one of the

three inputs depending on two referencesignals)

Signal selector (Gives one of the inputs or amaximum/minimum value depended on aselector signal value)

Sample and track (Output follows the sumof the input or samples it or delays it by Dt)

Instantaneous minimum/maximumMinimum-maximum tracking (Holds the

minimum/maximum of the inputs)Accumulator and counter (Holds or

integrates the sum of the inputs controlledby external signals)RMS value of the sum of input signalsFortran statements:

General (determined by Fortran expression)Basic Math operationsBasic Logical operators


18/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

Clock),Counters Filters (20 types):analog,digital,adaptive.

User definedMATLAB ATP

Components that can be developed bythe user either in Matlab's programminglanguage or C or Fortran.

Components that can be developed by theuser programming in MODELS simulationlanguage.

Others

MATLAB ATPController blocks: PID, fuzzy, neural

networks, etc.Optimal control toolboxDSP blocksetFixed point blocksetData acquisition and system

identification toolboxesWith certain restrictions a C code ca be

generated from the models and thiscode can be compiled to an executable

file.MATLAB models can communicate

with other Windows programs overDDE or ActiveX protocol.

Transposition (Makes defined transpositionbetween interconnected 3 phase elements)User specified (Some possibilities to load

the user specified elements from disk)Frequency (Harmonic source and some

frequency dependent elements )

6.- AN EXAMPLE REALISED IN THIS SOFTWARES

Induction motor loadAl ternat ive Transient Program (ATP)


19/20

SINATEC-IEEE

CIEEP-GISEI//BChuco

INDUCTION MOTOR LOAD USING PSCAD/EMTDC.

7.- CONCLUTIONS

The widely used program packages for electric network simulation were compared. Ithas to be pointed out that this tools are capable of simulating the same class ofProblems, though this requires experience and is time-consuming, them, the engineerthis software users may be known the power and electrical concepts.

The use of this software, enable practices experience, to day, around the world to havethousand of this. There are numerous widespread commercial software tools used bypower engineers for electrical circuit simulation purposes. It is, however, a challengingand time consuming task to get acquainted with all the details and specialties of such aprogram, that's why the majority of the users is not inclined to keep tabs on theevolution of similar products or does not even know them.Is very recommending, the use the free software in the teaching process, for future

engineer training about de virtual laboratory.


20/20

SINATEC-IEEE

REFERENCIAS.http://www.electrocon.com/http://www.skm.com/http://www.cape.com/http://www.cape.com/http://pscad.com/http://www.edsa.com/http://www.etap.com/http://www.eurostag.be/

http://www.powerworld.com/http://www.neplan.ch/http://www.digsilent.de/http://www.cyme.com/[1] C. A. Ca.nizares and F. L. Alvarado,.UWPFLOW, Continuation and Direct Methodsto Locate Fold Bifurcations in AC/DC/FACTSPower Systems,. 1999, available athttp://www.power.uwaterloo.ca.[2] M. Larsson, .ObjectStab _ An EducationalTool for Power System Stability Studies,.IEEETrans. Power Syst., vol. 19, no. 1, pp. 56.63, Feb.2004.[3] J . H. Chow and K. W. Cheung, .A Toolbox

for Power System Dynamics and ControlEngineering Education and Research,. IEEETrans. Power Syst., vol. 7, no. 4, pp. 1559.1564,Nov. 1992.[4] R. D. Zimmerman, C. E. Murrillo-Sanchez,and D. Gan, Matpower, Version 3.0.0, UsersManual, Power System Engineering ResearchCenter, Cornell University, 2005, available athttp://www.pserc.cornell.Edu/matpower/matpower.html.[5] A. H. L. Chen, C. O. Nwankpa, H. G.Kwatny, and Xiao-ming Yu, .Voltage StabilityToolbox: An Introduction and Implementation,.In Proc. of28th North American Power Simposium,MIT, Nov. 1996.[6] J . Mahseredjian and F. Alvarado, .Creatingan Electromagnetic Transient Program inMATLAB: MatEMTP,. IEEE Trans. PowerDelivery, vol. 12, no. 1, pp. 380.388, J an. 1997.[7] G. Sybille, SimPowerSystems Users Guide,Version 4, published under sublicense fromHydro-Quebec, and The MathWorks, Inc., Oct.2004, available at http://www.mathworks.com.[8] K. Schoder, A. Hasanovi c, A. Feliachi, andA. Hasanovi c, .PAT: A Power Analysis Toolboxfor MATLAB/Simulink,. IEEE Trans. Power Syst.,vol. 18, no. 1, pp. 42.47, Feb. 2003.[9] C. D. Vournas, E. G. Potamianakis, C.Moors, and T. Van Cutsem, .An EducationalSimulation Tool for Power System Control andStability,.IEEE Trans. Power Syst., vol. 19, no. 1,pp. 48.55, Feb. 2004.[10] F. Milano, .PSAT, Matlab-based PowerSystem Analysis Toolbox,. 2002.[11] R. M. Stallman, Free Software, Free Society:Selected Essays of Richard M. Stallman. Boston:Free Software Foundation, 2002.[12] J . W. Eaton, GNU Octave Manual. Bristol,

UK: Network Theory Ltd., 1997[13] ATP, EMTP-ATP Users Group.[14] PSCAD/EMTDC, Manitoba HVDC ResearchCentre,

Winnipeg, Manitoba, Canada.[15] MATLAB, Math Works, Inc., Natick, MA,USA.[16] Orr J. A., and Eisenstein B.A., Summary ofInnovations in Electrical Engineering Curricula,IEEE Trans. Education, Vol. 37, No. 2, May 1994,pp. 131-135.

[17] Laurent Dub. Users Guide to MODELSin ATP, by Canadian / American EMTPUser Group. April, 199614] MATLAB, Math Works, Inc., Natick, MA,USA.

BIOGRAFAB. Chuco P.

http://b-chuco-p.tripod.com/

power electronics software

Documents