PowSys32 – For Windows XP - Windows 11
Load Flow Analysis Software for Distribution & Transmission Networkselectricity networks. It is widely used by electrical utilities, consultants, the mining industry (and other
industries with internal electricity networks), universities and other training institutions.
Application POWSYS analyses:
• Power Flows, Losses and Voltage Levels under various loading conditions
• Dynamic switching effects such as motor starting, generation loss etc.
• Fault currents, Voltage and Fault MVA for a three phase fault at any node
Use POWSYS to:
• Check the availability of network to
• Supply new or increased loads Optimise network configuration to minimise losses
• Predict network performance under normal & single or multiple contingency operating conditions–eg. Loss of line, transformer, generator,etc.
• Determine ability to meet motor starting demands, or to determine acceptable motor starting conditons
• Assess economics of system augmentation alternatives
Features
• Alternate algorithms for Load Flow solution:
• Newton Raphson (Fast Decoupled)
• Gauss-Seidel
• Solution from last results or from Flat Start (ie. Start with all voltages set to nominal values)
• Transformer tap modelling includes On-load Tap Changing (OLTC) – optionally with Line Drop Compensation (LDC) settings – as well as fixed tap settings
• Line/Cable Impedance can be entered by an on-screen selection from Feeder Database with standard impedances per unit length requiring only a knowledge of feeder type and length.
• Utility program provided as standard part of the package to customise the Feeder database. Solves radial and fully meshed networks
• Dynamic switching study to assess motor starting and other dynamic changes to system loading or network configuration
• Optional data units – kVA/kW or MVA/MW; ohms or per unit (p.u.); flexible entry of load details with a choice of units
• Multiple circuits between any two nodes (up to 9 lines or transformers) and multiple loads per node Global load modifications or global sub-set modification based on load ID
System Requirements
• IBM compatible computer with Windows XP/Vista or 7.0
• At least the minimum memory required by the operating system
• Approximately 16mb Hard disk space
• SVGA monitor
• Printer or plotter (Colour preferred)
| Program Capacity | ||
| Edition | 200 Node | 3000 Node |
| Bus/Node | 200 | 3000 |
| Sources | 40 | 300 |
| Transformers | 100 | 1500 |
| Lines/Feeders | 200 | 3000 |
| Loads | 200 | 3000 |
• Graphical display of node/bus voltage levels
• Uses set VAR Limits on generators – automatic conversion of node type from PV to PQ if limits exceeded (Gauss-Seidel solution algorithm)
• Three phase fault can be applied to any network
• Node and fault level, voltage levels and fault current flows for all or selected part of the network reported
• Graphical display of single line diagram showing flows and voltage levels for load flow, dynamic switching or fault analysis
• Tabular reports can be saved as ASCII text files that can be imported into a word processor for formatted and customised reports, or imported into a spread-sheet for further processing, graphing etc.
• Graphical display of bus voltage profile
• ASCII files for network data and device data can be completely created and edited within POWSYS or created in other applications( including Datashare’s “ViewBase” program)
• Print button on on-screen reports for instant printing of results displayed
• Optional Single Line Diagram (SLD) user interface with easy-to-use drag & drop of network component creation-drag to reshape/re-space
• Import of Load Data from external files – ASCII or industry-standard data-bases
• More Load Models supported. Now includes …
• Constant Current
• Constant Impedance
• Contact Power
• System optimisation report lists branch current flows in ascending order to aid selection of optimum open points in meshed networks
• Reports based on Area & Region identification, as well as Bus/Node list.
• Use defined limits for abnormal conditions/ Limits Exceeded reports