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POWER SYSTEM ANALYSIS TOOLBOX (PSAT)

POWER SYSTEM ANALYSIS TOOLBOX (PSAT). BY K.Kathiravan AP/EEE Theni kammavar sangam college of technology Theni Email ID: electrickathir@rediffmail.com. OVERVIEW OF POWER SYSTEM ANALYSIS USING MATLAB TOOLBOX ES. Power system simulation involves a wide range of timeframes.

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POWER SYSTEM ANALYSIS TOOLBOX (PSAT)

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  1. POWER SYSTEM ANALYSIS TOOLBOX(PSAT) BY K.Kathiravan AP/EEE Thenikammavarsangam college of technology Theni Email ID: electrickathir@rediffmail.com

  2. OVERVIEW OF POWER SYSTEM ANALYSIS USING MATLAB TOOLBOXES • Power system simulation involves a wide range of timeframes. • 1) Starting at microseconds when simulating fast electromagnetic transients. • 2) Extending to several years in system planning studies. • power system may have to be modelled and solved in many different ways depending upon the studies event of interest. K.Kathiravan AP/EEE,TKSCT,THENI

  3. HIGH-LEVEL PROGRAMMING LANGUAGES • In the last decade, several high-level programming languages, such as • 1)Matlab • 2)Mathcad • 3)Mathematica • All the above were become more popular for both Researchand Educational purposes. • “Question?” in any of these languages can lead to good results in the field of power system analysis. • “Matlab proved to be the best user choice”. K.Kathiravan AP/EEE,TKSCT,THENI

  4. IMPORTANT AND FEATURES OF MATLAB • Matlab means matrix-oriented programming. • Features of Matlab: • 1)plotting capabilities • 2) graphical environment (Simulink) • Both are highly simplified control scheme design. K.Kathiravan AP/EEE,TKSCT,THENI

  5. COMMERCIAL SOFTWARE • The commercial software are all-in-one philosophy. • Despite their completeness, these software can result are cumbersome • (weighty) for Research and educational purpose. • These software are closed(not allow to changing the source code (or) adding • new algorithm). • PSS/E (power system simulation for Engineers) • EUROSTAG • SIMPOW (simulation of power systems) • CYME • POWER WORLD (power world simulator) • NEPLAN • All the above software are typically well tested and computationally well efficient K.Kathiravan AP/EEE,TKSCT,THENI

  6. OPEN SOURSE CODE SOFTWARE • Research purpose : • The flexibility and ability of easy prototyping are often more crucial (vital) • aspect than computational efficiency. • All are typically aimed to specific aspect of power system analysis. K.Kathiravan AP/EEE,TKSCT,THENI

  7. MATLAB-BASED RESEARCH AND EDUCATIONAL POWER SYSTEM TOOLS • MatPower Toolbox (MPT) • Power System Toolbox (PST) • Electromagnetic Transients Program (MatEMTP) • Power System Analysis Toolbox (PSAT) • Voltage Stability Toolbox (VST) • Power Analysis Toolbox (PAT) • Educational Simulation Tool (EST) • Sim Power Systems (SPS) • Among the above PSAT, MatPower,PSTandVST are open source and freely downloadable. K.Kathiravan AP/EEE,TKSCT,THENI

  8. GENERAL CONFIGURATION OF THE ALL MATLAB TOOLBOXES • Matlab toolboxes used in the power system analysis includes a set of application functions. • Collect their inputs and provide their outputs in a form to be processed for proper presentation to user. K.Kathiravan AP/EEE,TKSCT,THENI

  9. HISTORY • PSAT is written by Federico Milano , in September 2001. • “First public version of PSAT”completed in November 2002. K.Kathiravan AP/EEE,TKSCT,THENI

  10. OVERVIEW OF PSAT • PSAT is a Matlab toolbox for electric power system analysis and control. • Both static and dynamic analysis and control. • PSAT core is the power flow routine, which also takes care of state variable • initialization. • Once the power flow has been solved, further static and/or dynamic analysis can • be performed. • All operations can be assessed by means of graphical user interfaces (GUIs). • Simulink-based library provides an user friendly tool for network design. K.Kathiravan AP/EEE,TKSCT,THENI

  11. PSAT TOOLBOX PSAT includes : 1)power flow (PF) 2)continuation power flow (CPF) 3)optimal power flow (OPF) 4)small signal stability analysis (SSSA) 5) Time domain simulation (TDS) 6) Phasor measurement unit (PMU) placement. 7) Graphical user interface(GUI) 8) Graphical network editor(GNE) K.Kathiravan AP/EEE,TKSCT,THENI

  12. USEFUL FEATURES • Mathematical Models & Utilities(Static and Dynamic Component Models). • Variety of utilities and Bridges to other programs(GAMS and UWFLOW). • Data Format Conversion capability. K.Kathiravan AP/EEE,TKSCT,THENI

  13. VARIETY OF STATIC AND DYNAMIC COMPONENT MODELS (PSAT SUPPORTS) • Power Flow Data: • 1) Bus Bars • 2) Transmission Lines • 3) Transformers • 4) Slack Buses • 5) PV Generators • 6) Constant Power Loads • 7) Shunt Admittances • CPF and OPF Data: • 1) Power supply bids and limits • 2) Generator power reserves • 3) Generator ramping data • 4) Power demand bids and limits K.Kathiravan AP/EEE,TKSCT,THENI

  14. CONTI… Switching Operations: 1) Transmission line faults 2) Transmission line breakers Measurements: 1) Bus frequency 2) Phasor measurement units (PMU) Loads: 1) Voltage dependent loads 2) Frequency dependent loads, 3) ZIP (impedance constant current and constant power) loads 4) Exponential recovery loads 5) Thermostatically controlled loads 6) Jimma’s loads 7) Mixed loads K.Kathiravan AP/EEE,TKSCT,THENI

  15. CONTI… • Machines: • 1) Synchronous machines (dynamic order from 2 to 8) • 2) Induction motors (dynamic order from 1 to 5) • Controls: • 1) Turbine Governors • 2) Automatic Voltage Regulators • 3) Power System Stabilizer • 4) Over-excitation limiters • 5) Secondary Voltage Regulation (Central Area Controllers and Cluster Controllers) • 6) Supplementary Stabilizing Control Loop for SVCs • Regulating Transformers: • 1) Load tap changer with voltage or reactive power regulators • 2) phase shifting transformers K.Kathiravan AP/EEE,TKSCT,THENI

  16. CONTI… FACTS: 1) Static Var Compensators 2) Thyristor Controlled Series Capacitors 3) Static Synchronous Source Series Compensators 4) Unified Power Flow Controllers 5) High Voltage DC transmission systems Wind Turbines: 1) Wind models 2) Constant speed wind turbine with squirrel cage induction motor 3) Variable speed wind turbine with doubly fed induction generator 4) Variable speed wind turbine with direct drive synchronous generator Other Models: 1)Synchronous machine dynamic shaft 2)sub-synchronous resonance model 3)Solid Oxide Fuel Cell K.Kathiravan AP/EEE,TKSCT,THENI

  17. VARIETY OF UTILITIES • Utilities Include : • One-line network diagram editor (Simulink library) • GUIs for settings system and routine parameters • User defined model construction and installation • GUI for plotting results • Filters for converting data to and from other formats • Command logs • PSAT includes bridges to GAMS and UWPFLOW programs. • It is highly extend PSAT ability of performing optimization and continuation power • flow analysis. K.Kathiravan AP/EEE,TKSCT,THENI

  18. PSAT STRUCTURE K.Kathiravan AP/EEE,TKSCT,THENI

  19. MATLAB-BASED PACKAGES FOR POWER SYSTEM ANALYSIS K.Kathiravan AP/EEE,TKSCT,THENI

  20. AROUND THE WORLD (PSAT 1.3.4) K.Kathiravan AP/EEE,TKSCT,THENI

  21. AROUND THE WORLD (PSAT 2.1.2 ) K.Kathiravan AP/EEE,TKSCT,THENI

  22. PSAT VERSION • PSAT version 1.3.4– July 14/2005 Matlab 6.5.0.180913a (R13) • and • Matlab 7.0.0.19901 (R14) • PSAT version 1.3.3– Jan 26/2005 • PSAT version 1.3.2– Oct 8/2004 • PSAT version 1.3.1– Aug 2/2004 • PSAT version 1.3.0– May 2/2004 • PSAT version 1.2.2– nov 25/2003 • PSAT version 1.2.1– Sep 11/2003 • PSAT version 1.2.0– Aug 31/2003 • PSAT version 1.1.0– Aug 16/2003 • PSAT version 1.0.0 – Nov 11/2002 • PSAT version 2.1.8 – Jan 6/2013 – above Matlab 7.14 (R2012a) • PSAT version 2.1.7 – Jun 30/2012 - Matlab 7.14 (R2012a) • PSAT version 2.1.6 – May 13/2010 - Matlab 7.10 (R2010a) • PSAT version 2.1.5 – Nov 1/2009 Matlab 7.9 (R2009b) • PSAT version 2.1.4 – Jun 17/2009 Matlab 7.9 (R2009b) • PSAT version 2.1.3 – Apr 21/2009 Matlab 7.9 (R2009b) • PSAT version 2.1.2 – Jun 26/2008 - MATLAB 5.3(R11) to • Matlab 7.6 (R2008a) • PSAT version 2.1.1 – Jun 18/2008 • PSAT version 2.1.0 – Jun 16/2008 • PSAT version 2.0.0 – Feb 2/2008 • PSAT version 2.0.0 beta 4 – Nov 20/2007 • PSAT version 2.0.0 beta 4 – Mar 8/2007 • PSAT version 2.0.0 beta 2 – Dec 14/2006 • PSAT version 2.0.0 beta 1 – Mar 24/2006 • PSAT 2.1.2 can also run on 1) Linux • 2) Unix • 3) Mac OS X • Matlab 7.9 (R2009b) – (PSAT2.1.0 to PSAT 2.1.8) K.Kathiravan AP/EEE,TKSCT,THENI

  23. QUICK TUTORIAL FOR PSAT • PSAT Installation • Launching PSAT • Settings • Loading Data • Running the Power flow Program • Displaying Results • Saving Results K.Kathiravan AP/EEE,TKSCT,THENI

  24. PSAT INSTALLATION • INSTALLATION : • Extract PSAT zip files (any version)in a good location • Open MATLAB • Add PSAT’s Path to MATLAB default path • Note: check with compact ability of MATLAB Version. • *for Matlab 2008a - PSAT 2.1.2 is used • *for Matlab 2009b - PSAT 2.1.2 to PSAT2.1.8 • for Matlab 2010a – PSAT 2.1.6 • *for Matlab 2012a – PSAT 2.1.7 K.Kathiravan AP/EEE,TKSCT,THENI

  25. DEMO TO START PSAT K.Kathiravan AP/EEE,TKSCT,THENI

  26. PSAT LAUNCHING Getting Started: >> psat K.Kathiravan AP/EEE,TKSCT,THENI

  27. SETTINGS • Main settings of the system are directly included in the main window: • Base frequency • Base Power • Start & End Simulation Time • static and dynamic tolerance • Maximum number of iterations • Other general settings: • Menu Edit/General Settings or <Ctr-k> • To change the default values for some fields of the Settings structure • Menu Edit/Set Default • To save a customize settings , use it as default values for the next sessions • Menu File/Save/Settings K.Kathiravan AP/EEE,TKSCT,THENI

  28. GENERAL SETTINGS WINDOW • Menu Edit/General Settings or <Ctr-k> • POWER FLOW SOLVER : • NR method • XB fast Decoupled • BX fast Decoupled • Runge –kutta method • Lwamoto method • Simple Robest method • INTEGRATION METHOD: • Trapizoidal Rule • Forward Euler K.Kathiravan AP/EEE,TKSCT,THENI

  29. LOADING DATA Load only a data file : • Menu File/Open/Data File (or) Short cut <Ctr-d> Load a saved system: • File/Open/Saved System (or) Short cut <Ctr-y> • To allow portability the .out files used for saving system results include also the original data which can be saved in a new .m data file. • The data file can be either a .m file in PSAT format or a Simulink model created with the PSAT library. • If the source is in a different format supported by the PSAT format conversion utility. • First perform the conversion in order to create the PSAT data file. K.Kathiravan AP/EEE,TKSCT,THENI

  30. LOAD DATA FILE • Menu File/Open/Data File (or) Short cut <Ctr-d> K.Kathiravan AP/EEE,TKSCT,THENI

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