MiPower-demo.pptx

Power System Simulation tools

1. MiPower Power System Software Package Welcome to the presentation Planning Power Systems Analysis Design Simulation Verification

2. MiPower - An Introduction MiPower is the state-of-the-art Windows based Power Systems Software. MiPower is highly interactive, user-friendly software for all analysis, planning, design and simulation of any given Power System irrespective of the geographical and environmental constraints. MiPower is widely used by Consultants, Power utilities, State Electricity Authorities and Academic & Research Institutes for more than a decade . MiPower is armed with robust power system engine in the backend and a lucid top-notch Windows GUI in the front-end. Approach, technique & methodology employed are field proven & time-tested. These conforms with standard ANSI, IEEE, IEC and other worldwide accepted standards. All power system data is centrally maintained with an industry standard relational database. Core power systems engine includes Single Phase Load Flow Three Phase Load Flow Short Circuit Transient Stability Over Current Relay Co-ordination Distance Relay Co-ordination Voltage Instability Harmonic Analysis Dynamic Stability Network Reduction Sub-synchronous Resonance Electro-Magnetic Transients Long Term Load Forecast Line & Cable Parameter Ground Grid Design MiPower helps in dealing with a wide range of power system problems. Highly intuitive Graphical User Interface smoothens the learning curve to a great extent. With MiPower , Power System Engineers can become productive with minimum effort / time and results are emphatically visible.

3. About the Developers Highlights Highly qualified Several Phd. MTech. ME, BE Hard Core Power Systems Expertise Dealt with several hundred cases Experts in Software Technologies Microsoft Certified Professionals Experience Domain Expertise of 3 to 30+ years PRDC is a dynamic organization with core-expertise in power sector in providing lucid solutions for highly complex power system problems. PRDC's strong team comprises of highly qualified (Phds, MTechs), experienced and dedicated people. Core team involves experts in their respective domains like power systems & software technology with an experience of Three to Thirty years. PRDC is managed by highly qualified technocrats with doctorates from world renowned Indian Institute Of Science, Bangalore, India. The mission is to provide state-of-the-art power system solutions. PRDC is in the fore-front in lending its services to Power sector in the form of System Planning & Studies mainly to the State Electricity Authorities and Utilities. About the Developers

4. Main Screen Shot MiPower - At a Glance Screen Shot PS Network Editor Central Database Manager Batch Mode Interface Multi-Graph Plotter Line & Cable Params Long Term Load Forecast Ground Grid Design Control Systems Modeler cum Simulator PS Engines E.g. LF, SC, TRS Automatic SLD Generation AutoCAD Export / Import 4 Level Security

5. MiPower - At a Glance Four level Security Access Levels Super User Element Editor Library Editor Viewer

6. MiPower - At a Glance MiGUI - Power System Network Editor Key Features All IEEE / IEC standard symbols Real-time Zooming / panning Single click Database Link Display of study results with SLD Dynamic load flow Creation of Contingencies Nested Networks Multi-Layers Save / Load snapshot Find a Bus / Node Element in-service / out-of-service User configurable base voltages Object Z-Order control Integrated database Invoke any study - LFA, SCS… and more….. Standard Features Multi-document support Context Sensitive Help Cut / Paste / Undo / Redo Ortho mode for drawing / moving objects Dynamic Text fonts Rotation / Resizing Print / Plot onto any Windows support printer / plotter Supported sizes A4 - A0

7. MiDBase - Central Database Manager MiPower - At a Glance MiDBase - Central Database Manager Key Features Centralized for Elements & Library User friendly, Interactive forms Solid validated library of Relays, Breakers, Generators, AVR, SVC, Fuse, Line & Cable etc. Distinct element & connectivity data Entry in Per Unit [PU] or own rating Unlimited number of contingencies Invoke any study - LFA, SCS... Apply global multification factor Apply global reduction factor Integrated AVR, PSS, TG, SVC Custom HVDC, AVR, PSS, TG SVC User defined unlimited branch filters User defined load characteristics Present worth calculation Generator capability curves Standard & Custom reports Creation of sub-DB from master DB and more….. Standard Features Context Sensitive Help Quick Find Global modification of any data Tabular listing of any data Industry standard data navigation tools Deleted record tracking

8. MiBatch - Text to DB / DB to Text MiPower - At a Glance MiBatch - Text to DB / DB to Text MiBatch aids in conversion of plain ASCII data into standard database & vice-versa. Key Features Creation of central database using available plain ASCII data files Easy import / export of data in plain ASCII text Single click deletion of obsolete network data from central database Aids quick printing of any standard library

9. MiGraph - Multi-graph Plotter MiPower - At a Glance MiGraph - Multi-graph Plotter Key Features Linear, semi-log, log scale Curve Tracing Superimpose multiple graphs User defined X - Y axis labels Device co-ordination using curves Harmonic Analysis of obtained graphs Math operations on obtained curves Use of Symbols for curve identification Flexible Axis alignment Standard Features Context Sensitive Help Fonts & User defined X - Y axis lables Standard WUSIWYG Print-preview / Print User defined Background color Export to AutoCAD Zoom facility

10. MiFPB - Free Programmable Blocks MiPower - At a Glance MiFPB - Free Programmable Blocks Key Features General Purpose Modeling tool Time domain analysis of any control block Stand alone simulation Simulation when integrated with power system 50 types of nodes 30 elementary blocks Standard Disturbance Simulation Design of Compensators Design of PID Controllers AVR, Governor, SVC, HVDC and FACTS simulation Under Load Tap Changer simulation Compatible with MiPower’s Transient stability module and more….. Standard Features Multi-document support Context Sensitive Help Cut / Paste / Undo / Redo Ortho mode for drawing / moving objects Dynamic Text fonts Rotation / Resizing / WYSIWYG Print preview Print / Plot onto any Windows support printer / plotter

11. Load Flow Analysis MiPower - At a Glance Load Flow Analysis Load values, scheduled generation, reactor and capacitor values can be changed globally or zone wise using reduction factors. Generator Q - check limit violations after a specified number of iterations. Changing the load model from the given type to impedance type automatically, when the voltage magnitude at load bus goes below specified value to have better and realistic convergence. MVAR compensation Load shedding during under frequency to maintain the frequency at desired value. Standard and Custom reports Efficient memory management using sparsity technique. Slack bus, Frequency dependent, Optimal and contingency ranking Fast- DeCoupled , Newton - Raphson and Gauss - Seidel methods Frequency dependent with Flat Tie-Line, Flat Frequency and Flat Tie-Line Frequency Bias Control Active / Real Optimal load flow Reactive Optimal load flow Active/Real and Reactive load flow AC-DC load flow Looped, radial and Multiple Isolated systems User-defined number of contingencies, cases User-defined filters, load characteristics, Generator capability curves User-defined frequency and base MVA Transmission line can be opened at one or both sides Representation of shunt elements in admittance /impedance Two / Multi - terminal HVDC systems Modeling two and three winding transformers with auto tap, off nominal fixed tap and phase shift Grouping buses zone/area wise Feature Highlights Sample LFA results on SLD

12. Short Circuit Analysis MiPower - At a Glance Short Circuit Analysis ANSI / IEEE standards IEEE Std 141-1986[4] IEEE C37,010-1979[1] IEEE C37.5-1979 [3] IEEE C7010-1979 IEC 363 IEC 909 Symmetrical and Asymmetrical faults Faults with and without impedance Loop, radial systems Multi islanding Multi generation Multi cases and contingencies Open conductor faults Fault at all / selected buses sequentially Fault at selected voltage level/s First cycle and interrupting fault rating Reactor Sizing Alerts breaker capacity violation Motor contribution to faults HVDC system contribution to faults Pre-fault voltage condition from the load flow/flat start Feature Highlights Multiplication factors for unknown zero and negative -sequence parameters Positive, negative, zero sequence current & fault-MVA Phase A, B, C current and fault MVA Peak Asymmetrical current, Fault impedance R/x ratio Post-fault bus voltages, currents and impedance as seen at the relay positions Breaker fault interrupting capacity selection User defined Output units Custom reports

13. Transient Stability Analysis MiPower - At a Glance Transient Stability Analysis Unlimited number of disturbances Types of disturbances Three phase fault Single line to ground fault Transformer parameter variation Transmission line parameter variation Load change Generator tripping Total generation outage Excitation loss Shunt impedance change Motor Start and Stop Motor starting with Auto transformer Star delta Direct Online - DOL Resistance Synchronous machine models Voltage relays, frequency relays & distance relays Standard IEEE voltage regulators, Standard IEEE steam/hydro/gas turbine governors Standard IEEE power system stabilizer Standard IEEE static VAR compensators Modeling cyclic loads, like rolling mills Feature Highlights User defined load characteristics Modeling of six pulse / twelve pulse monopolar / bipolar HVDC converters with constant voltage / current / power controls Different levels of load shedding User-defined AVR’ s, Turbine-governors, SVCs and HVDC, ULTC controls Text and Graphical Output Sample Swing Curve

14. Protective Device Co-ordination MiPower - At a Glance Protective Device Co-ordination Overcurrent & Impedance / Distance Protection Relay co-ordination for radial and mesh networks Automatic / Interactive / Manual Primary-back-up relay pairs generation Save and retrieval of selected relay pairs Fault calculation is a part of relay co-ordination program Phase and Earth relay co-ordination Optimum setting for Motor relays. Hot and cold curves considered Extensive relays data base Easy interface for adding new relay to library Graphical co-ordination - Pick, drag and drop characteristic curves Verification of existing relay settings Fault simulation and relay tripping sequence Text and Graphical Output Thermal curves for each equipment Option of Voltage initialization by load flow or flat start Overload factor, unbalance factor and discrimination time for each relay Feature Highlights Choice of transient/Sub-transient for Fault calculation Fault through impedance Fault on bus/node/Transmission line Optional inclusion of motor contribution during fault simulation Discrimination time calculator L-G, L-L-L, L-L, L-L-G fault simulation Zone 1, zone 2 and zone 3 setting for distance relays Impedance seen by the relay for faults Sample Co-ordinated curve

15. Voltage Instability Analysis Voltage Instability Analysis MiPower - At a Glance Assess the risk of voltage instability L-Index computation Margin of instability during sudden disturbances Ranks the load buses based on the L-index value Voltage dependency of loads is accounted while modeling loads Voltage/reactive power sensitivity risk indices Voltage collapse proximity indicator Graphical report of voltage instability for better analysis Feature Highlights Voltage Instability Analysis

16. Harmonic Analysis MiPower - At a Glance Harmonic Analysis Three-phase harmonic load flow to compute harmonic distortion factors Harmonic transfer and driving point impedance for both transmission and distribution power systems Instantaneous and RMS voltage/current sources are considered Representation of user defined loads Characteristic to model realistic loads such as arc furnace, rolling mills and non-linear devices HVDC converter is modeled as a current source User defined filters are supported Individual voltage distortion Total voltage distortion Telephone influence factor ( TIF ) Generator / motor harmonic current Ig Self and transfer harmonic network impedance Harmonic bus voltages and line currents Harmonic power flows through filters and lines etc. Graphs of phase and line-to-line voltages and currents versus time and frequency, harmonic impedance versus frequency. Feature Highlights

17. Dynamic Stability Analysis MiPower - At a Glance Dynamic Stability Analysis Dynamic stability analysis for the given power system in both frequency domain (Eigen value analysis) and time domain. Initial condition obtained from Load flow Generator modelling includes the controllers. Eigen values are computed for the system Disturbance set Change in reference angle Reference voltage Reference power Reference speed. Used defined number of cases Feature Highlights

18. Network Reduction Analysis MiPower - At a Glance Network Reduction Analysis Static and dynamic equivalents for the power system. Static Equivalent - bus admittance matrix (Ybus) as seen from the desired nodes Dynamic Equivalent -single machine equivalent circuit Automatic generation of Sub-Database for reduced network Load flow output is considered to establish the initial condition Buses to be retained are selected individually or zone/area wise Output for both Ybus and Zbus matrices for the reduced system Impedance values of additional series and shunt connections Output includes equivalent generator's inertia, power, voltage and impedance Feature Highlights

19. MiPower - At a Glance Sub-Synchronous Resonance Frequency response method Many synchronous machines Extensive series compensated transmission network Simultaneous detailed modeling of all machine shafts and control loops Stability of the system is examined by the Nyquist plot Maximum of 20 masses can be represented in the turbine shaft model Mode shapes are computed for the turbine shaft Frequency can be varied from a minimum value to a maximum value at user defined step value Feature Highlights

20. Electro Magnetic Transient Analysis MiPower - At a Glance Electro Magnetic Transient Analysis Designed to perform both for transient and dynamic over voltage studies Highest discharge currents and energy stresses for the protective equipment Over voltages caused due to energization of lines, transformers and shunt elements, during fault inception and on clearing of faults Modeling of transmission line, resistor, series reactor, series capacitor, synchronous machines, induction motors, transformer with magnetizing component, shunt reactor (including saturation), shunt capacitor, instantaneous voltage and current sources, RMS voltage and current sources, lightning arrestors Statistical analysis of breaker closing and opening Symmetrical and asymmetrical faults with fault impedance Impulse voltage/current can be injected at a bus as disturbance Three phase over voltage profiles Statistical distribution of over voltages Arrester voltage, current and energy Current through different equipment Voltages at different equipment Feature Highlights

21. Long Term Load Forecast MiPower - At a Glance Long Term Load Forecast Forecasts the energy demand during the planning stages of a power system. Can be applied for any type of load data Can accommodate any number of independent variables Multivariate regression techniques for the forecasting Uses the past data for the estimation of dependent variables with least error Based on the user input value, the forecasting model is selected. Facility to accommodate more than one independent variable (maximum 18) like, population, per-capita income, number of consumers, etc In the same data file it is possible to define more than one dependent variable (maximum 18) for example total electricity consumption by different categories like, domestic, commercial, and agriculture etc Capable of selecting the best model out of various models Facility to accommodate maximum of 48 observations for each category Output includes reports and bar graph files Feature Highlights

22. Line & Cable Parameter Calculation MiPower - At a Glance Line & Cable Parameter Calculation Calculates the positive, negative and zero sequence parameters of overhead lines Calculates the positive, negative and zero sequence parameters of Under Ground Cables Single and multi phase configurations Wide range of user defined frequencies and temperatures Calculates the mutual impedance between power and communication lines Supports 6 circuits for 3 phase line and 3 circuits for 6 phase line DC line parameter computation Transposed and untransposed Line parameters MKS and FPS units Impedance in Ohms per km or Ohms Impedance for entire line length or pu per km or pu for the entire line length Frequency varied from minimum to maximum value at user defined step Cable parameter calculation for both single core and 3 core cables Earth return path through ground or through ground and sheath or through sheath Feature Highlights