Mi Power

Power Research & Development Consultants Pvt. Ltd. INDIA

MiPower

MiPowerMiPowerPower System Software Package

Welcome to the presentation

Planning

Power Systems

AnalysisDesign

Simulation

Verification


MiPowerMiPower - 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-ordinationVoltage Instability Harmonic Analysis Dynamic StabilityNetwork Reduction Sub-synchronous Resonance Electro-Magnetic TransientsLong 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.

MiPower – An Introduction


MiPowerAbout 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


MiPower

Main Screen ShotMiPower - At a Glance

Screen Shot

PS NetworkEditor

Central Database Manager Batch Mode

Interface

Multi-Graph Plotter

Line & Cable

Params

Long TermLoad Forecast

Ground Grid Design

Control SystemsModeler cum

Simulator

PS EnginesE.g. LF, SC,

TRS

AutomaticSLD

Generation

AutoCADExport / Import

4 Level Security


MiPowerMiPower - At a Glance

Four level Security

Access Levels Super User

Element EditorLibrary Editor

Viewer

Four Level Security



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

• Dynamic IEEE / IEC switch

• 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 / WYSIWYG Print preview• Print / Plot onto any Windows support printer / plotter• Supported sizes A4 - A0

MiGUI – Power System Network Editor


MiPower

MiDBase - Central Database Manager

MiPower - At a GlanceMiDBase - 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

• Additional MIS 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


MiPower

MiBatch - Text to DB / DB to Text

MiPower - At a GlanceMiBatch - 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


MiPower

MiGraph - Multi-graph Plotter

MiPower - At a GlanceMiGraph - 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• Provision for modifying data any time

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


MiPower

MiFPB - Free Programmable Blocks

MiPower - At a GlanceMiFPB - 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


MiPower

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 six/twelve pulse monopolar / bipolar HVDC

converters with constant voltage/current/power controls.• 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


MiPower

Short Circuit Analysis


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• Travelling shunt faults • Fault at all / selected buses sequentially• Fault at selected voltage level/s• Earthing & Zigzag transformers• 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


MiPower

Transient Stability AnalysisMiPower - 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


MiPower

Protective Device Co-ordination

MiPower - At a GlanceProtective 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• Extensive fuse data• 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• Export to Autocad• 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


MiPower

Voltage Instability AnalysisVoltage Instability Analysis


• 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 HighlightsVoltage Instability Analysis


MiPower

Harmonic AnalysisMiPower - 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


MiPower

Dynamic Stability AnalysisMiPower - 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


MiPower

Network ReductionMiPower - At a Glance

Network Reduction

• 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



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 HighlightsSub-Synchronous Resonance


MiPower

Electro Magnetic Transient Analysis


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• Time varying resistor• Impulse voltage/current can be injected at a bus as

disturbance• Facility exists to incorporate user defined filters• 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


MiPower

Long Term Load ForecastMiPower - 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


MiPower

Line & Cable Parameter Calculation


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


MiPower

IndustryReliance Industries Limited (RIL), Hazira, GujaratKvaerner Power Gas India limited, MumbaiBharat Heavy Electrical Limited (BHEL), New DelhiNuclear Power Corporation (NPC), MumbaiFact Engineering & Design Organization, CochinHindalco Industries Ltd., Renusagar, U.PHindustan Petroleum Corporation Ltd., Visakhapatnam, A.P

Select Client ListSelect list of MiPower usersSelect list of MiPower usersSelect list of MiPower usersSelect list of MiPower users

ConsultantsElectrowatt Ekono, U.K • MONENCO AGRA Inc. CANADACanadian Power Consultants – Canada • ALSTOM T&D - FranceAsea Brown Boveri Limited (ABB), Bangalore.Development Consultants Limited (DCL), CalcuttaCESC Limited, CalcuttaNational Thermal Power Corporation (NTPC), New DelhiWater and Power Consultancy Services (India) Ltd. (WAPCOS), New DelhiState Electricity Authorities

Bhutan Power CorporationZimbabwe State Electricity AuthorityQatar Water & Electricity AuthorityAssam State Electricity Board (ASEB)Chhattisgarh State Electricity Board (CSEB)Tamil Nadu Electricity Board (TNEB)Karnataka Power Transmission Corporation Ltd. (KPTCL)Orissa State Electricity Board (OSEB)Ahmedabad Electrical Company Ltd.,Orissa State Hydro Power Corporation (OHPC)Uttar Pradesh Power Corporation Ltd. (UPPCL)Rajasthan Rajya Vidyut Vitaran Nigam Ltd. (RRVPNL)West Bengal State Electricity Board (WBSEB)

R & D and Training InstitutesIndian Institute of Science, BangaloreCentral Power Research Institute (CPRI), BangalorePower System Training Institute (PSTI), C.E.A., Ministry of Power, Bangalore


MiPower

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